Page 1 PT 26D Operator´s manual English...
Page 2 Servicejournal Servicejournal...
Page 3: Table Of Contents
Contents Chapter 1:Introduction ..........3 28. Throttle control ..........45 29. High speed ............45 Congratulations ............3 30. Weight transfer ..........46 Driving and Transport on Public Roads ....3 31. Rotating warning light (traffic kit option) ...46 Towing ..............3 32. Parking lights (traffic kit option) ......47 Use ................
Page 4 Contents Adjusting hydrostatic control ........83 Chapter 11:Hydraulic System .........138 Adjusting the parking brake ........84 Chapter 12:Fuel system ...........141 Servicing the air filter ..........85 Technical Data............143 Cleaning the cyclone filter ........85 Replacing the air filter ..........86 Design standards ............149 Bleeding the fuel system ........87 Servicing the fuel filter ..........88 Checking the Tyre Pressures .........89 Servicing the battery ..........90...
Page 5: Chapter 1:Introduction
Thank you for purchasing a Husqvarna PT26D. Husqvarna PTs have been designed according to a unique concept with a front mounted cutting unit and Husqvarna's unique rear wheel steering. The machine is built to give maximum efﬁciency even in small and difﬁcult areas. Collected controls and a hydrostatic transmission controlled by pedals also contribute to the machine’s performance.
Page 6: Use
Introduction This machine is designed to mow grass on ordinary lawns and other open and level ground surfaces without obstacles such as stones, stumps and the like. All other types of use are incorrect. The manufacturer’s instructions with regard to driving, maintenance and repair must be followed precisely, even when the machine is equipped with special accessories supplied by the manufacturer for which operating instructions accompany the delivery.
Page 7: Proper Service
Introduction Proper Service Husqvarna’s products are sold all over the world and only by specialised retail traders offering complete service. This ensures that you as a customer receive only the best support and service. Before the product is delivered, the machine has, for example, been inspected and adjusted by your dealer, see the certiﬁcate in the Service Journal.
Page 8: Serial Number
Introduction Serial Number The serial number can be found on the printed plate attached on the right-hand side under the seat. The plate includes the following information: • The machine’s type designation. • Weight. • The manufacturer's type number. • The machine’s serial number.
Page 9: Chapter 2:Symbols And Decals
Symbols and Decals Chapter 2: Symbols and Decals These symbols are found on the machine and in the operator’s manual. Symbols for control units and warning lamps are displayed in chapter “Presentation”, see page 42 and following pages. Study them carefully so you understand their signiﬁcance. Read the Warning Use hearing...
Page 10 Symbols and Decals Do not insert your hands Never carry or feet under Only for passengers the cover Warning! attached on the when the Rotating cutting unit machine engine is blades Parking brake Forward Pedal forwards running or on its tools. Read the Reversing Pedal backwards...
Page 11 Symbols and Decals WARNING: Xxxxxx x xxxx xxxxx xxxxx xxxxx Xxxxxxxxxxx xxx xxxxxx. Xxxx xxxxxxx xxx xx xxxx Used in this publication to notify the reader of a risk of personal injury , particularly if the reader should neglect to follow instructions given in the manual.
Page 12 Symbols and Decals IMPORTANT INFORMATION: Xxx xxx xxxx xxxxxxxxx xxx xxxxx xxx xxxx xx xxxxx xx xxxxx. Xxx xxxxxxxx xx x x xxxxxxx xx xxxx xxxx. Used in this publication to notify the reader of a risk of material damage , particularly if the reader should neglect to follow instructions given in the manual.
Page 13: Chapter 3:Safety Instructions
Safety Instructions Chapter 3: Safety Instructions These instructions are for your safety. Read them carefully. WARNING: The inserted symbol means that important safety instructions needed to be observed. It applies to your safety. 8009-744 Read the operator’s manual before starting the machine General Use •...
Page 14 If you get into a situation where you feel unsure about how to progress, stop and seek expert advice. Contact your Husqvarna retailer, service agent or an experienced user. Avoid all usage that you consider to be beyond your capability.
Page 15 Safety Instructions • Slow down before turning. • Shut down the blades when not mowing. The blades must only be running when the cutting unit is lowered and active when used for mowing. • Be careful when rounding ﬁxed objects, so that the blades do not hit them.
Page 16 Safety Instructions WARNING: Engine exhaust, some of its constituents and certain vehicle components contain or emit chemicals considered to cause cancer, birth defects or other reproductive impairment. The engine emits carbon monoxide, which is a colourless, poisonous gas. Do not use the machine in enclosed spaces. •...
Page 17 Safety Instructions • Never leave the machine unsupervised with the motor running. Always stop the blades, apply the parking brake, stop the engine and remove the keys before leaving the machine. • Never allow children or other persons not trained in the use of the machine to use or service it.
Page 18: Driving On Slopes
Safety Instructions • Never use the machine when barefoot. Always wear protective shoes or protective boots, preferably with steel toes. • Make sure that you have ﬁrst aid equipment close at hand when using the machine. Driving on slopes Driving on slopes is one of the operations where the risk of the driver losing control of the machine or of it overturning is the greatest;...
Page 19 Safety Instructions • Never drive the machine on terrain that slopes more than 10°. • Avoid starting or stopping on a slope. If the tyres start to slip, stop the blades and drive slowly down the slope. • Always drive evenly and slowly on slopes. •...
Page 20: Children
Safety Instructions • Try not to stabilise the machine by putting a foot on the ground. • When cleaning under the machine, it may never be driven near verges or ditches. Children • Serious accidents may occur if you fail to be on guard for children in the vicinity of the machine.
Page 21: Maintenance
Safety Instructions Maintenance • Stop the engine. Remove the ignition key before making any adjustments or carrying out maintenance. • Never ﬁll the fuel tank indoors. • Only store fuel in clean containers approved for the purpose. • Never remove the fuel cap or ﬁll the fuel tank with fuel while the engine is running.
Page 22 Safety Instructions • Do not remove the ﬁller cap or any other component on the cooling system when the engine is hot or under pressure, as hazardous hot coolant can spray out. WARNING: The engine, exhaust system, cooling system and hydraulic system components become extremely hot during operation.
Page 23 Safety Instructions • Avoid overﬁlling. In the event of spilling fuel on the machine, wipe it up before starting the engine. If you spill petrol on your clothing, change your clothing. • Material that has been contaminated by fuel must be moved to a ﬁre proof and environmentally safe place.
Page 24 Safety Instructions IMPORTANT INFORMATION: Avoid sparking and its consequences by: Wearing protective glasses. Make sure that the fuel cap is ﬁtted and that no ﬂammable liquids are stored in an open container. Do not work on the starter motor circuit in the vicinity of spilt fuel.
Page 25 Safety Instructions • Acid in the eyes can cause blindness, contact a doctor immediately. • Be careful when servicing the battery. Explosive gases form in the battery. Never perform maintenance on the battery while smoking or in the vicinity of open ﬂames or sparks. This can cause the battery to explode and cause serious injuries.
Page 26 Safety Instructions • The machine is tested and approved only with the equipment originally provided or recommended by the manufacturer. • The blades are sharp and can cause cuts and gashes. Wrap the blades or wear protective gloves when handling them. •...
Page 27: Transport
Safety Instructions Transport IMPORTANT INFORMATION: The parking brake is not sufﬁcient to lock the machine during transport. Ensure you secure the machine ﬁrmly to the transporting vehicle. The machine is heavy and can cause serious crushing injuries. Be extra cautious when it is loaded on or 8043-024 unloaded from a vehicle or trailer.
Page 28: Environment Protection
Safety Instructions Environment protection Take care of the environment, there are numerous environmental risks especially when performing maintenance on the machine. This particularly applies when dealing with engine oil, hydraulic oil, fuel, oil ﬁlters, hydraulic ﬁlters and fuel ﬁlters. You must be attentive to ensure spillage does not occur when you open a system that contains oil or fuel.
Page 29 Safety Instructions • Replaced oil and fuel ﬁlters are environmental hazardous waste, handle them as waste oil. • Do not spill fuel when refuelling. One litre of diesel fuel can, according to the Swedish Rescue Services Agency, destroy up to one million litres of drinking water.
Page 30: User Responsibility
Safety Instructions User responsibility • Study and follow the safety instructions, see “Safety Instructions” on page 11. • Follow the maintenance schedule for care, see “Maintenance Schedule” on page 71, lubrication chart, see “Lubrication Schedule” on page 111 and the instructions for operating the machine, see “Presentation”...
Page 31: Chapter 4:Presentation
Chapter 4: Presentation Congratulations on your choice of an exceptionally high quality product. This operator's manual describes Husqvarna PT26D. It is ﬁtted with a Perkins 3 cylinder diesel engine developing 26 horse power. PT26D is equipped with hydraulic steering and attachment lift.
Page 32 Presentation The machine is equipped with an electro-hydraulic differential lock, which is controlled by a pedal. The differential lock only works longitudinally, which means that you can turn the machine with the differential lock activated. The differential lock does not work in high speed. PT26D is equipped with front lighting as standard.
Page 33 Presentation Placement of controls 8043-044 Speed control for driving forwards page 34 Knob for seat suspension page 36 Speed control for reversing page 34 10. Steering wheel console page 33 Parking brake page 35 11. Pedal for differential lock page 38 Control panel page 32 12.
Page 34 Presentation Control panel 8043-001 21. Control lever hydraulics page 40 30. Switch for weight transfer page 46 22. Switch for operating the cutting unit page 42 31. Rotating warning light (option) page 46 23. Switch for 2nd hydraulic function (option) page 42 32.
Page 35 Presentation Steering wheel console 8009-864 40. Warning lamp Battery charging page 48 47. Warning lamp High speed page 48 41. Warning lamp Differential lock page 48 48. Warning lamp Right-hand indicator page 48 42. Warning lamp Coolant temperature page 48 49.
Page 36: Speed Control
Presentation 1-2. Speed control The speed of the machine is variably controlled using two pedals. Pedal (1) is used to travel forwards and pedal (2) to reverse. WARNING: Make sure that no branches can interfere with the pedals when mowing under bushes. 8009-895 Speed control...
Page 37: Parking Brake
Presentation 3. Parking brake The parking brake is activated as follows: 1. Pull up the lock handle (36) on the control panel. 2. Depress the parking brake pedal (3), it secures automatically. The parking brake is released as follows: 1. Press down the lock handle (36). 2.
Page 38 Presentation WARNING: Do not adjust the seat whilst driving. Risk of unsafe operation. 8043-003 Lateral adjustment and adjusting suspension The seat can also be adjusted lengthways: • When making adjustments, the lever (8) under the left-hand side of the seat is moved to the left, after which the seat can be moved backwards or forwards to the desired position.
Page 39: Steering Wheel And Steering Wheel Console
Presentation • Lumbar support is adjusted using a knob (7) on the left-hand side of the backrest. 8043-005 10. Steering wheel and steering wheel console The position of the steering wheel can be adjusted to give a comfortable driving position by releasing the lock (50) and raising or lowering the steering wheel and the steering unit.
Page 40: Differential Lock
Presentation 11. Differential Lock The differential lock is electro-hydraulic. It is operated by a pedal controlled switch. The differential lock only works longitudinally, it ensures operation on at least one front wheel and one rear wheel. This means that you can turn the machine with engaged differential lock without causing any interruptions in the power transmission or damage to the lawn.
Page 41: Fuelling
Presentation 13. Fuelling The fuel level in the tank is indicated in the sight glass. Do not ﬁll the tank completely, leave an area of at least 2.5 cm (1"). Fill the fuel tank with diesel. Do not use petrol under any circumstances.
Page 42: Controls On The Control Panel
Presentation Winter fuel and parafﬁn precipitation Malfunctioning can occur when driving in extremely cold conditions on account of parafﬁn precipitation, which can occur if using standard fuel. To avoid this, winter fuel, diesel with additives to prevent precipitation, is sold in relevant climates. In certain regions different types of summer and winter fuels are sold, in other regions.
Page 43 Presentation Pull the lever backward to engage the transport position. The unit is then raised. The cutting unit can be raised slightly with the blades in operation. This is to facilitate work when cutting in extremely tall grass or on uneven surfaces. The machine is, however, equipped with an automatic blade stop function, which is activated when the cutting unit reaches the transport position.
Page 44: Switch For Operation Of Cutting Unit
Presentation 22. Switch for operation of cutting unit The cutting unit can only be started when the driver is sitting in the seat. • Pull out the switch to engage cutting unit operation. • Press in the switch to disengage cutting unit operation.
Page 45: Push Button For Horn (Traffic Kit Option)
Presentation 24. Push button for horn (trafﬁc kit option) 8043-038 Switch for horn 25. Indicators (trafﬁc kit option) Press for the left-hand or right-hand indicator. Blinkers are switched off automatically after approximately 30 seconds or manually by pressing in the same direction.
Page 46: Starter Switch
Presentation 26. Starter switch Three positions: • All functions switched off. The engine is stopped. The parking light can be switched on (trafﬁc kit option). • Normal operating position. • Start and Preheating Keep the switch in the glow plug mode, when glow plug heating is complete the starter is engaged.
Page 47: Throttle Control
Presentation 28. Throttle control The accelerator is used to control the speed of the engine and thereby also the rotation speed of the blades. In order to increase or decrease the engine speed, the control is moved forwards or backwards respectively. 8043-007 Throttle control 29.
Page 48: Weight Transfer
Presentation 30. Weight transfer Weight transfer is activated using this switch, transfers a proportion of the unit’s weight to the machine. This causes greater ground pressure on the machine’s front wheels and lower ground pressure on the unit’s pivot wheels. It is recommended to use weight transfer when lawn mowing and sweeping.
Page 49: Parking Lights (Traffic Kit Option)
Presentation 32. Parking lights (trafﬁc kit option) Can be lit using the switch even if the ignition switch is not switched on. The battery will be completely drained in approximately 20 hours. The parking light is lit automatically when the engine is running, even if the switch is not switched on.
Page 50: Chronometer
Presentation Chronometer The chronometer shows how many hours the engine has been running. Any time when the engine is not running but the ignition is switched on is not registered. The last digit shows tenths of an hour (6 minutes). 40-52.
Page 51: Lever For Steering Wheel Console Angle
Presentation 49. Lever for steering wheel console angle When the lever is activated, the angle of the steering wheel console can be adjusted for a more comfortable driving position or to facilitate entering the driver’s seat. The lever is sprung. WARNING: 8009-866 Adjusting the steering wheel console angle and steering...
Page 52: Cooling System
Presentation Cooling system IMPORTANT INFORMATION: Coolant must be a mixture of 50 % antifreeze ﬂuid and 50 % soft water. Anticorrosion agent in the coolant will be diluted if a reduced mixture is used. A higher mixture can negatively inﬂuence the cooling capacity.
Page 53 Presentation WARNING: Do not open the cap quickly when the engine is hot, ﬁrst release the overpressure with the cap partially slackened off. Risk of burns. Use protective gloves and protective goggles. 8009-883 Coolant draining engine block WARNING: The antifreeze ﬂuid and coolant are hazardous to health.
Page 54 Only use a glycol based antifreeze that is approved by the applicable norms BS 6580:1992 or ASTMD 3306-89 or AS 2108-1977 (indicated on the packaging). The antifreeze agent must be intended for use with light alloy engines. Your Husqvarna supplier can provide the correct type of antifreeze agent.
Page 55 Presentation IMPORTANT INFORMATION: Glycol Water Freezing point If you use the incorrect type or mix different types of antifreeze agents, a chemical reaction may occur, - 47 °C 60 % 40 % which causes overheating and severe engine damage. These are not covered by the warranty. - 37 °C 50 % 50 %...
Page 56: Cutting Unit
Presentation Cutting unit PT26D can be equipped with cutting unit, Combi 132 with a 132 cm cutting width or Combi 155 with a 155 cm cutting width. The cutting unit is driven by a v-belt, a power take-off shaft and a propeller shaft from the engine. It is engaged by an electro magnetic clutch, which is located in front of the engine’s ﬂywheel.
Page 57: Accessories
Accessories The accessories are described in separate operator’s manuals. Contact your dealer if you require an accessory. Examples of original accessories available for Husqvarna PT26D: • Trafﬁc kit: Lighting with direction indicators, parking light and rotating warning lamp • Accessory hydraulic kit: Attachment bracket, hydraulic valves, quick action couplings, hydraulic hoses, switch and cable harness •...
Page 58 Presentation...
Page 59: Chapter 5:Driving
Driving Chapter 5: Driving Mowing Tips WARNING: Use ear protection. Clear the lawn of stones and other objects that can be thrown out by the blades. • Locate and mark plants, rocks and other ﬁxed objects in order to avoid collisions. •...
Page 60 Driving WARNING: Never drive the machine on terrain that slopes more than 10°. Mow upwards and downward on slopes, never sideways. Avoid sudden directional changes. 8009-859 Max 10° in all directions • The ﬁnest lawns are obtained by mowing often. Mowing will be more even and the clippings will be more evenly distributed across the area.
Page 61: Before Starting
Driving • It is important to mow frequently when mowing with the mulching function. • Use the differential lock if there is a risk of wheel spin. The differential lock can be engaged during operation and turns can be made with it engaged. Before Starting IMPORTANT INFORMATION: The air intake grille behind the driver's seat must not...
Page 62 Driving • Carry out daily maintenance according to “Maintenance Schedule” on page 71. • Adjust the seat to the desired position. See “5-9. Seat” on page 35. • Adjust the steering wheel and steering wheel console to the desired position. •...
Page 63: Starting The Engine
Driving Starting the engine 1. Apply the parking brake by pulling up the lock handle (36) and pressing down the pedal (3). The engine cannot be started if the parking brake is applied or if a driving pedal is pressed. Check that the switch for the cutting unit drive is depressed.
Page 64 Driving 3. Turn the ignition key to the glow plug heating position and keep it there until the warning light on the steering wheel console goes out and the starter motor engages. Glow plug heating is dependent on the engine temperature. If you require an extend glow plug heating period, you must wait in the OFF or ON position for 4 seconds.
Page 65 Driving WARNING: Never run the engine indoors, in enclosed or badly ventilated areas. Engine exhaust fumes contain poisonous carbon monoxide and carcinogenic substances. 8043-014 Engine speed control in idling mode 5. Set the desired engine speed (even idle) using the throttle control.
Page 66 Driving Starting with a weak battery WARNING: Lead-acid batteries produce explosive gases. Avoid sparks, open ﬂames and smoking close to batteries. Always wear protective glasses in the vicinity of batteries. If the battery is too weak to start the engine, it should be recharged.
Page 67 Driving Connecting jump leads: • Connect each end of the RED lead to the POSITIVE terminal (+) on each battery, and take care not to short-circuit an end against the chassis. • Connect one end of the BLACK lead to the NEGATIVE terminal (-) on the battery that is fully charged.
Page 68: Driving The Machine
Driving Driving the machine 1. Release the parking brake by ﬁrst pressing down the lock handle (36) on the control panel and then the parking brake pedal (3). Then release the pedal. 8043-045 Parking brake 2. Select high or low speed with the switch on the control panel.
Page 69 Driving 3. Carefully press down one of the pedals until the required speed is attained. Pedal (1) is pressed down to travel forwards and pedal (2) to reverse. 6007-895 Driving pedals 4. Lower the cutting unit to the ground using the lifting lever.
Page 70: Braking
Driving 5. Activate weight transfer if desired using the switch (30) on the control panel. The weight transfer position should always be activated when cutting grass. 6. Start the cutting unit as necessary using the switch for power take-off (22) on the control panel. The cutting unit can only be started in low speed.
Page 71: Cutting The Engine
Driving Cutting the engine If the engine has been worked hard, it is preferable to let the engine idle for a minute so it is running at its normal working temperature when it is stopped. 1. Switch off the cutting unit if it is running. 2.
Page 72: Bleeding In The Event Of Fuel Stoppage
Driving 4. Apply the parking brake, when the machine is stationary, by ﬁrst pulling up the lock handle (36) on the control panel and then press down the parking brake pedal (3). Bleeding in the event of fuel stoppage. See the chapter, Maintenance “Bleeding the fuel system”...
Page 73: Chapter 6:Maintenance
Maintenance Chapter 6: Maintenance It is good practice to always check for leaks and loose components after use. Also check the machine and listen for knocking sounds. During hard use and in extreme conditions, the service intervals should be reduced. Check the cooling system’s antifreeze before the Winter.
Page 74 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Check the coolant level Check/clean the engine’s cooling air intake, radiator mesh and radiator Check fastenings (screws, nuts, etc.) Start the engine and blades, listen for unusual sounds...
Page 75 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Lubricate according to lubrication chart Clean the air ﬁlter and empty the particle trap Check the blades Change the engine oil and ﬁlter Replace hydraulic oil ﬁlter...
Page 76 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Check the wheel nuts Check the parking brake, adjust if necessary Check the safety function Check/adjust the cutting unit settings.
Page 77 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Adjust the valves and check the engine speed Replace the pump and generator belt 1.4) Change the hydraulic oil and ﬁlter Change the oil in the bevel gear...
Page 78 Maintenance Described in this manual Not described in this manual. Maintenance Page Daily main- Weekly Maintenance interval hours tenance main- 1000 2000 3000 tenance befor after Check generator and starter motor Pressure test the fuel injection nozzles Check the coolant pump 1.
Page 79: Cleaning
Maintenance WARNING: No service operations may be performed on the engine or cutting unit unless: • The engine is stopped. • The parking brake is on. • The ignition key has been removed. Cleaning Clean the machine directly after use. It is much easier to wash off grass cuttings before they dry.
Page 80 Maintenance IMPORTANT INFORMATION: Avoid using a high pressure washer or a steam cleaner. Lubricate the machine if necessary after cleaning. Carry out extra lubrication when the bearings have been exposed to a degreaser or a water jet. There is a major risk of water penetrating into bearings and electrical connections.
Page 81: Removing The Machine's Covers
Maintenance Removing the machine’s covers Engine cover 1. Open the engine covers on both sides. 2. Remove the screws holding the engine cover. 3. Lift off the engine cover. Assemble in the reverse order. 8009-779 Engine cover’s mounting screws Checking radiatorgrilles Clean the radiator grille behind the driver's seat: Fold the driver's seat up.
Page 82: Cleaning The Radiator's Heat Exchanger
Maintenance Cleaning the radiator's heat exchanger Remove the radiator grille. If the dirt is mixed with oil, ﬁrst spray cold degreasing agent and wait approximately 5 minutes. Then ﬂush the radiator with water jets from the engine compartment. Dirt mixed with oil, can be due to a leaking hydraulic oil cooler.
Page 83: Replacing The Pump And Generator Drive Belts
Do not adjust the stop screws on the regulator housing, the engine’s warranty may become invalid. If doubts arise, contact a Husqvarna service workshop. If adjustments are necessary, they can be made as follows for the cable: 1.
Page 84: Checking The Exhaust System
Maintenance Checking the exhaust system Check regularly that the mufﬂer is complete and secured correctly. Check that the pipe is not cracked or leaks. Temperature variations and vibrations can mean that the tightening torque for the screws drops. The screws should be checked when servicing to guarantee the correct torque.
Page 85: Adjusting Hydrostatic Control
Do not change the length of the control rod (3) as this affects the hydraulic pump setting. If the rod has been changed unintentionally, it should be adjusted to the correct length. This requires special equipment and should be carried out by a Husqvarna workshop.
Page 86: Adjusting The Parking Brake
Maintenance Adjusting the parking brake Brake adjustment should be carried out by a Husqvarna workshop. WARNING: 8043-018 Parking brake control A poorly adjusted parking brake can result in reduced braking ability. 1. Raise the machine so that the wheels rotate freely.
Page 87: Servicing The Air Filter
Maintenance Servicing the air ﬁlter If the engine seems to lack power or does not run smoothly this may be because the air ﬁlter is clogged. When driving with a dirty air ﬁlter, the engine does not receive enough air, which does not meet the environmental demands, and the engine does not operate at full efﬁciency.
Page 88: Replacing The Air Filter
Maintenance Replacing the air ﬁlter Remove the cover held by two brace locks. Pull the air ﬁlter cartridge straight out and remove it. Wipe the inside of the air ﬁlter housing dry. If necessary, dampen the cloth with white spirit or fuel. Water or compressed air must not be used.
Page 89: Bleeding The Fuel System
Maintenance Bleeding the fuel system If you have run out of fuel, the fuel system must be bled. Facilitatebleeding by pumping using a hand pump. Remove the fuel tank ﬁller cap and check the return fuel to the tank. When bubble free fuel ﬂows to the tank, the engine can be started.
Page 90: Servicing The Fuel Filter
ﬂow valve. The fuel ﬁlter should be replaced by a qualiﬁed technician, there is a risk of damaging the injection pump if carried out incorrectly. Contact your Husqvarna workshop. Used fuel ﬁlters areare environmentally hazardous waste.
Page 91: Checking The Tyre Pressures
Maintenance Checking the Tyre Pressures The tyre pressure must be 100 kPa / 1.0 bar / 14.5 PSI for the front and rear wheels. The air pressure in cutting unit's pivot wheels should be 150 kPa / 1.5 bar / 21.8 PSI. IMPORTANT INFORMATION: Different air pressure in the front tyres or pivot wheels will result in the blades mowing the grass at...
Page 92: Servicing The Battery
Maintenance Servicing the battery The machine is equipped with a sealed “maintenance- free” battery. The battery has an inspection hole that displays different colours: • Green = OK. • White = Charge the battery. • Red = Replace the battery. 8009-796 WARNING: Battery...
Page 93: Fuses
Maintenance Fuses The machine’s electrical system is fused by three different types of fuse: 1. Automatic fuses; These reset automatically after a short-circuit in the circuit. No corrective action required by the operator. 2. Fusible link of the high output type; Replaced by the operator.
Page 94 Maintenance The circuit fuses are located on the circuit board under a cover on the control panel’s right-hand side. If any of these fuses trip, only the relevant circuit has no power. FU10 10 A Red Power take-off’s magnetic clutch 10 A Red Solenoid valves hydraulic system 10 A Red...
Page 95: Checking The Safety System
Maintenance Checking the Safety System PT26D is equipped with a safety system that prevents starting or driving under the following conditions. The engine can only be started when the parking brake is applied and the drive pedals are unactuated. If the cutting unit is connected, it is disengaged and must be re-engaged.
Page 96: Replacing The Bulb In The Headlight
Maintenance Replacing the bulb in the headlight Applies to the headlight lamp. For information about the bulb type, see “Technical data”. IMPORTANT INFORMATION: When the plastic covers are removed, the unit with warning lamps is released. Do not damage it. 1.
Page 97 Maintenance IMPORTANT INFORMATION: Do not touch the bulb glass with your ﬁngers. Finger prints evaporate and mark the reﬂector. 5. Fold the wire loop for headlight lamp to one side and replace the bulb. 6. Assemble in the reverse order. Light setting Place the machine at least 5 m from a wall.
Page 98: The Cutting Unit Components
Maintenance The Cutting Unit Components The components mentioned are: • A Pin • B Link joint • C Cutting unit mountings • D Cutting height settings • E Propeller shaft with quick couplings • F Service handle • G Drive belt with cover 8009-759 The Cutting Unit Components •...
Page 99: Side Shifting The Cutting Unit
Maintenance Side shifting the cutting unit Cutting unit, Combi 155, can be side shifted 8 cm to the left or be centrally positioned on the machine. 1. Stop the engine. Switch off the weight transfer switch. IMPORTANT INFORMATION: Never leave the propeller shaft on the machine with one end detached.
Page 100 Maintenance 7. Remove the pins from the shafts and remove the shafts from the link joints. 8. Remove the screws for the bearing brackets. 9. Remove the adjustment screw from its mounting. TIP! Measure where the lock nut is located on the 8009-776 adjustment screw.
Page 101 Maintenance 14. Continue to screw in the adjustment screw for tilt angle. 15. Install the shaft for the link joint and its pins on both sides. 16. Start the engine and raise the cutting unit to the transport position. 17. Stop the engine. 8009-783 Adjustment screw tilt angle 18.
Page 102: Setting The Cutting Height And Tilt Angle
Maintenance Setting the cutting height and tilt angle When a new cutting unit is attached, you need to adjust the tilt angle and cutting height. Adjustment must be made in the stated order. Starting position: • Check the air pressure in the tyres 100 kPa / 1,0 bar / 14,5 PSI and 150 kPa / 1.5 bar / 21.7 PSI for the pivot wheels.
Page 103 Maintenance 4. Set the handle for cutting height setting. Release the handle by pressing in the button and turning it to the horizontal position, so that it does not catch on bushes etc. The height interval is between 25 - 127 mm (1”- 5”), 7 positions.
Page 104: The Cutting Unit's Service Position
Maintenance The Cutting Unit’s Service Position In order to provide good accessibility for cleaning, repair and servicing, the unit can be set in the service position. The service position means that the unit is raised and locked in the vertical position. Placing in the Service Position 1.
Page 105 Maintenance 5. Remove the pins on both sides. 6. Tilt the cutting unit. 7. Secure the cutting unit with the pin in the service handle. Keep track of the hairpin spring. 8. The cutting unit in the service position. Releasing the Service Position Images, see “Placing in the service position”.
Page 106: Cutting Unit Model
Maintenance Cutting Unit Model PT26D can be equipped with two different types of cutting unit: • Combi 132 • Combi 155 The digits indicate the cutting width in cm. Older types of cutting unit cannot be attached. Combi 155 can be mounted 8 cm (3 1/8") to one side in relation to the machine.
Page 107: Checking The Blades
Maintenance Checking the Blades WARNING: Protect your hands with gloves when working with the blades. Risk of cutting. 8043-026 Sharpening blades It is important that the blades are undamaged and well-ground to give the best mowing result. IMPORTANT INFORMATION: Replacement or sharpening of the blades should be carried out by an authorised service representative.
Page 108: Replacing The Power Take-Off Belt
Maintenance WARNING: If the blades are cracked, whether caused by poor repair or other damage, they could break while being used. Cracked and defective blades must always be replaced. The risk increases if the blades are poorly balanced. 8009-885 Stop arm Replacing the power take-off belts Always replace the belts in pairs.
Page 109 Maintenance 5. Release the belt tensioner's spring tension, two springs. 6. Pry off the rear belt from the lower belt pulley and guide it out through the belt tensioner to the rear of the belt pulley. 7. Pry off the front belt from the lower belt pulley and guide it out through the belt tensioner to the rear of the belt pulley.
Page 110: Replacing The Cutting Unit Belt
Maintenance Replacing the cutting unit belt WARNING: Protect your hands with gloves when working with the blades. There is a risk of crush injuries when working with the belt. 8009-880 Replacing the belt on the Combi unit Relieving the spring On these cutting units with “collision-proof”...
Page 111 Maintenance 4. Slacken off two screws and remove the three others for the gear housing. Turn the gear housing so that the belts can be moved under the pulley. 5. Check that the belt tensioning equipment is not jammed or binding and replace the spring. 6.
Page 112: Removal Of Bioclip Plug
Maintenance Removal of BioClip Plug To change a Combi unit from the BioClip function to a cutting unit with rear ejection, remove the BioClip plug, which is located under the unit. 1. Put the unit in the service position. See “The Cutting Unit’s Service Position”...
Page 113: Chapter 7:Lubrication
Lubrication Chapter 7: Lubrication Lubrication Schedule When in daily use, the weekly lubrication (40 h) schedule should be carried out twice a week. 8043-056...
Page 114: General
Lubrication General = Filter replacement The position numbers for the lubrication points refer to = Oil Change the lubrication instructions on the following pages. = Level check Remove the ignition key to prevent unintentional = Brush movements during lubrication. = Grease nipple When lubricating with an oilcan, it ought to be ﬁlled = Oil can with engine oil.
Page 115: Accessories
Lubrication Accessories Lubrication or other maintenance of optional equipment or accessories, see “Accessories” on page 55, is not described in this manual. This equipment too, naturally, requires maintenance. See the manuals for the respective accessories for instructions. Lubricating in Accordance with the Lubrication Schedule The numbers in the following headings refer to the 8043-019...
Page 116 Lubrication 3. Cutting unit’s bevel gear Sight glass on the plug on the front of the bevel gear. Check the level when the cutting unit is in the lower position. When ﬁlling, raise the cutting unit to the transport position and remove the plug with the sight glass.
Page 117 Lubrication 5. Lift cylinder 2 nipples, one at each end of the cylinder. Lubricate using a grease gun until grease is forced out. 8009-891 Lift cylinder 6. The power take-off shaft’s front support bearing Lubricate using a grease gun until grease is forced out. 8009-799 The power take-off shaft’s front support bearing...
Page 118 Lubrication 7. The power take-off shaft’s rear support bearing Lubricate using a grease gun until grease is forced out. 8043-020 The power take-off shaft’s rear support bearing 8. Engine Oil Viscosity and quality Use engine oil viscosity as illustrated, class API CH4 or ACEA E5 or higher.
Page 119 Lubrication Checking the oil level Check the oil level in the engine when the machine is standing horizontally with the engine switched off. Remove the dipstick and wipe it clean. Then insert the dipstick again. Take the dipstick out again and read the oil level. 8009-793 The engine dipstick The oil level should be between the markings on the...
Page 120 Lubrication Filling engine oil The oil ﬁller opening is on the valve cover. Never ﬁll above the “FULL” mark (upper notch on the dipstick). Fill the oil slowly. Reinstall the dipstick before starting the engine. Start and run the engine at idling speed for approx.
Page 121 Lubrication IMPORTANT INFORMATION: Used engine oil is a health hazard and must not be disposed of on the ground or in nature; it should always be disposed of at a workshop or appropriate disposal location. Avoid skin contact; wash with soap and water in case of spills.
Page 122 Lubrication 8. Replacing the engine’s oil ﬁlter WARNING: Risk of spray and burn injuries. The engine’s oil ﬁlter may be very hot immediately after stopping. Allow the engine to cool somewhat ﬁrst. 8009-801 Engine oil ﬁlter IMPORTANT INFORMATION: Replaced ﬁlters must be handed in to the workshop or other allotted place for disposal.
Page 123 The oil ﬁlter holds 0.2 litres of oil. 9. Hydraulic oil Viscosity and quality Hydraulic oil Statoil HydraWay HVXA 46. Viscosity 46 cSt. Local regulations may affect the choice of hydraulic oil due to environmental reasons, consult your Husqvarna workshop at the relevant location.
Page 124 Replaced ﬁlters must be handed in to the workshop or other allotted place for disposal. Avoid skin contact; wash with soap and water in case of spills. Hydraulic oil and ﬁlters should be changed by an authorised Husqvarna workshop.
Page 125 Lubrication 9. Hydraulic oil ﬁlter, change Hydraulic oil ﬁlters should be changed by an authorised Husqvarna workshop. 10. Cutting unit mounting Lubricate ball joints and shafts with the oil can. 8043-031 Cutting unit mounting 11. Lifting arm’s rear bearings 2 nipples, one on each side. Lubricate using a grease gun until grease is forced out.
Page 126 Lubrication 12. Driver’s Seat Tilt the seat back. Lubricate the lengthways adjustment mechanism with the oilcan. Lubricate the lengthways adjustment runners with grease. Pull the seat back and forth and lubricate on both sides. 8009-877 Driver’s Seat 13. Parking brake cables See “Lubricating the cables”...
Page 127 Lubrication 14. Control cylinder 2 nipples, one at each end of the cylinder, lubricate using a grease gun until grease is forced out. 8043-057 Control cylinder...
Page 128 Lubrication...
Page 129: Chapter 8:Trouble Shooting Guide
Trouble Shooting Guide Chapter 8: Trouble Shooting Guide Check the machine refer to this guide before contacting your service workshop. Problem Cause The engine will not start. • Fuel tank empty • Incorrect fuel type • Air in fuel system •...
Page 130 Trouble Shooting Guide Problem Cause The engine runs erratically • Air in fuel system • Defective excess ﬂow valve • Blocked fuel ﬁlter • Low feed pressure • Clogged air ﬁlter • Blocked fuel tank ventilation • Disconnected fuel line (diffuser jet) •...
Page 131 Trouble Shooting Guide Problem Cause Abnormal exhaust smoke • Black smoke: Incorrect fuel quantity from injection pump Defective injector Incorrect timing of injection pump Clogged air ﬁlter • Blue smoke: Engine oil level too high Serious engine damage • White smoke: Defective cylinder head gasket Cracked cylinder head Engine oil level too high...
Page 132 Trouble Shooting Guide Problem Cause The engine lacks power • Air in fuel system • Clogged air ﬁlter • Fuel ﬁlter blocked • Defective excess ﬂow valve • Low feed pressure • Defective feed pump • Incorrect timing of injection pump •...
Page 133 Trouble Shooting Guide Problem Cause Battery does not charge • One or more battery cells faulty • Poor contact on the battery terminal cable connectors • Defective generator • Generator drive belt broken or slipping • Breakage on cables to the generator •...
Page 134 Trouble Shooting Guide Problem Cause Uneven mowing results • Blades blunt • Cutting unit set incorrectly • Long or wet grass • Grass build-up under the cover • Different air pressure in the right and left tyres • Different air pressures in the tyres on the pivot wheels •...
Page 135: Chapter 9:Storage
Storage Chapter 9: Storage Winter Storage At the end of the mowing season, the machine should be readied for storage (or if it will not be in use for a long period). There is less of a risk of corrosion damage if the machine is cleaned and stored in a dry environment.
Page 136 Storage WARNING: Never store an engine with fuel in the tank in poorly ventilated spaces where fuel vapour can come in contact with open ﬂames, sparks, or a pilot light such as in a boiler, hot water tank, clothes drier, etc. Handle the fuel with care.
Page 137: Service
5. Remove the battery. Clean, charge, and store in a cool place. Maintenance charging is recommended. An inappropriate charger will destroy the battery. Contact your Husqvarna dealer for suitable chargers. 6. Store the machine in a clean, dry place and cover it for extra protection.
Page 138 Storage...
Page 139: Chapter 10:Electrical System
Electrical system Chapter 10: Electrical system 1. Headlight 2. Indicator panel 3. Control panel 4. Circuit board 5. Circuit fuses 6. Starter 7. Generator 8. Sensor engine temperature (2) 9. Oil pressure sensor (concealed) 10. Fuses and main relay 11. Main fuse 12.
Page 140: Chapter 11:Hydraulic System
Hydraulic System Chapter 11: Hydraulic System 8043-108 Hydraulic System, Component Locations 1. Quick couplings, see diagram 6. Valve block transmission 11. Inlet strainer 2. Lift cylinder 7. Wheel motors 12. Hydraulic cooler 3. Control cylinder 8. Hydraulic pump Control and air system 13.
Page 141 Hydraulic System 8009-863 Hydraulic diagram...
Page 142 Hydraulic System Keep the hydraulic system clean. Remember to: • Thoroughly clean before the top-up cap is opened or any connector loosened. • Use clean containers when topping up the oil. • Only use pure oil that has been stored in a sealed container.
Page 143: Chapter 12:Fuel System
Fuel system Chapter 12: Fuel system Fuel system with in-line pump has excellent operational reliability as long as the fuel is kept clean. If contaminated fuel is ﬁlled or enters the system in the incorrect manner, the risk of malfunction or wear/ damage to the injection pump increases.
Page 144 Fuel system 8009-802 Fuel system...
Page 145: Technical Data
Technical Data Technical Data Data PT26D Dimensions Excluding cutting unit Length, base machine 2070 mm / 6.79 ft Width, base machine 1170 mm / 3.83 ft Height 1300 mm / 4.26 ft Operating weight, base machine 600 kg / 1322 lb Wheelbase 1180 mm / 3.87 ft Tyre dimensions...
Page 146 Technical Data Data PT26D Displacement 1131 cm Fuel min 45 Cetane 2.0 - 4.5 cSt @ 40 °C 0.835 - 0.855 kg/l Sulphur< 0.2 w% Tank volume 37.5 liters/9.9 US Gal Viscosity see page116 Class API CH4 or ACEA E5 Oil volume 2.5 litres/2.6 US qt Oil volume including ﬁlter...
Page 147 Technical Data Data PT26D Battery 12 V, 40 Ah Main fuse 125 A Supply fuse circuit board 50 A Fuse Yellow Flat pin 20 A Fuse Red Flat pin 10 A Fuse Brown Flat pin 7.5 A Bulb headlight 12 V H4 Hydraulic System Max.
Page 148 Technical Data Data PT26D Maximum speed Forwards, high speed 18 km/h Forwards, low speed 13 km/h Reverse, low speed 13 km/h Max inclination, all directions 10° Cutting unit Combi 155 Cutting width 1550 mm/61" Cutting heights 25.4 - 127 mm / 1" - 5" Blade length 560 mm/22"...
Page 149 Technical Data Data PT26D Blade length 490 mm/19.3" Width 1340 mm / 52.8" Weight approximately 100 kg / 29.3lb Length machine with unit approximately 2730 mm / 8.96 ft Noise emissions with unit C155 Measured noise level 104 dB(A) Guaranteed noise level 105 dB(A) Noise emissions with unit C132 Measured noise level...
Page 150 Technical Data IMPORTANT INFORMATION: When this product is spent and is no longer used it should be returned to the dealer or other authority for recycling. IMPORTANT INFORMATION: In order to introduce improvements the speciﬁcation and design are subject to alteration without prior notice.
Page 151: Design Standards
Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel: +46-36-146500, declare under sole responsibility that the Husqvarna PT26D, from 2006’s serial numbers and onwards (the year is clearly stated in plain text on the rating plate with subsequent serial number), conforms with the requirements of the COUNCIL’S DIRECTIVE: of June 22, 1998 “relating to machinery”...
Page 152 Design standards Diverse design standards The electrical system is designed to conform to requirements of insurance companies regarding the risk of ﬁre. The electrical system has an electrical main circuit breaker and max. 10 A in the control circuit. All electrical cables are protected by a protective hose.
Page 153 Index Children 18 Chronometer 48 Accessories 55 Circuit fuses 92 Air filter 85 Cleaning 77 Air filter cartridge 86 Cold 63 Air intake grille 59 Combi 104 Air pressure 89 Combi unit 54 Antifreeze 133 Contamination 140 Antifreeze agent 52 Control cylinder 125 Automatic dipped beam mode Automatic dipped beam 44 Control panel 35...
Page 154 Index Dirt 140 Filling hydraulic oil 122 Drain plug 119 Filter 140 drive shaft 107 Fuel 19 Driver’s Seat 122 Fuel filter 26 Driving pedals 34 Fuel hygiene 39 Driving position 37 Fuel level 39 Fuel system 20 Full beam 48 Electrical system 137 Fuses 91 Electro magnetic clutch 30...
Page 155 Index Oil filter 26 Oil level 117 Idling 69 Oil mixed dirt 80 Indicators 43 Oil pressure 48 Injection pump 141 Oily dirt 77 Injectors 141 Ordering spare parts 6 Inspection hole 90 Parallelism 101 Jump leads 65 Parking brake 35 Parking brake cables 124 Parking lights 47 Lift cylinder 115...
Page 156 Index Towing 3 Traffic kit 30 Safety 11 Transport 3 Safety circuit 42 Transport Position 40 Safety System 93 Type designation 6 Seat 35 Tyre air pressure 89 Serial Number 6 Tyre pressure 89 Service position 102 Sharpening the blades 105 Side shifting 97 Use 4 Sight glass 39...
Page 157 Servicejournal Servicejournal...
Page 158 Servicejournal Servicejournal...
Page 159 Servicejournal Servicejournal...
Page 160 115 11 04-26...

Husqvarna PT-26D Operator's Manual

Chapter 1:Introduction

Chapter 2:Symbols And Decals

Chapter 3:Safety Instructions

Chapter 4:Presentation

Chapter 5:Driving

Chapter 6:Maintenance

Chapter 7:Lubrication

Chapter 8:Trouble Shooting Guide

Chapter 9:Storage

Chapter 10:Electrical System

Chapter 11:Hydraulic System

Chapter 12:Fuel System

Technical Data

Design Standards

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Summary of Contents for Husqvarna PT-26D

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