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Larson Boats reserves the right to change, alter, and modify their finished boats, parts, and specifications included in your Owner’s Manual without notice. Optional equipment described in this manual may vary from model to model and year to year. Please consult with your Larson Dealer for current information on standard and optional equipment and specifications.
We’ve done our part— with all the systems and components on board your Larson boat. The procedures in this manual will assist you Pride of craftsmanship is your assurance that you’ve with safe and proper operation, and maintenance of your bought the very best.
Larson Boat Owner installed on your new Larson boat. PRE-LAUNCH & UNDERWAY 1. Set up an appointment with your Larson dealer to dis- cuss all warranties. Complete and return the Larson The intent of the Pre-launch & Underway Chapter is to...
Being aware of its terms sive instruction in the operation of your boat and all is important. If a problem arises with your Larson boat as a systems and components installed on board, just ask result of workmanship or materials, contact your Larson your dealer.
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Gelcoat cracking, yellowing, crazing or blistering, plexi- glas, canvas, vinyl or tape unless noted on • Vinyl tops: Larson does not warrant damage that might equipment check off list at time of delivery. occur when a boat is being towed on a trailer with the top up, and does not warrant shrinkage, mildew, or •...
Hazard Statements to Larson Boats, Paul Larson Memorial Drive, Little Falls, MN 56345. This symbol means “pay attention!” Here is impor- The limited warranty for your boat is transferable and can tant information for your safety.
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You should fully understand and become familiar with the following safety precautions before 6. Keep an eye on the weather. Be aware of possible launching your Larson boat. changing conditions by monitoring local weather broad- casts prior to departure. Strong winds and electrical 1.
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8. Before departure file your Cruise Log with a responsi- awareness by the participant and the boat operator. Safety ble person ashore. awareness is of primary importance in preventing acci- dents and injury. If you are going to swim near your boat 9.
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WARNING: Larson boats are not designed and WARNING: Switch engine off before taking skiers should not be used for the pulling of Para-sails, aboard from in the water. Do not leave engine run- kites, gliders, or any other device that is designed to ning in neutral;...
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Recreational Boats” are also available from the U.S. Rules of the Road Coast Guard Headquarters. Your Larson boat is subject to U.S. Coast Guard-enforced Because of proposed alterations in buoys and markers, marine traffic laws known as “Rules of the Road.” There contact the U.S.
The spoken word “MAYDAY” is the international signal of warnings. Operate you boat with regard for the safety distress. “MAYDAY” should NEVER be used unless of other boats and people in your boating area. there is present danger, an emergency, and you are in need of immediate assistance.
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PROPERTIES AND CHARACTERISTICS OF 9. Drowsiness CARBON MONOXIDE 10. Incoherence 11. Nausea 1. Carbon monoxide is a colorless, odorless and tasteless 12. Dizziness gas that is a natural by-product of internal combustion. 13. Fatigue It is commonly referred to as CO. 14.
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oration around joints in the system (water leaks, carbon, tor is running. Dangerous concentrations of CO can accu- stains, etc.) mulate when a boat, generator or other engine operated device is operated while the boat is moored in a confined 1.
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FIGURE 1.5 THE EFFECT OF BOATS MOORED FIGURE 1.7 INEFFICIENT TRIM ANGLES ALONG SIDE 2. Excessive or unequally distributed weight. BACKDRAFTING (Station Wagon Effect) 3. Canvas configurations - under various conditions, Backdrafting or the “station wagon effect” is caused by air adding or removing canvas may raise or lower CO lev- movement over or around a boat creating a low pressure els.
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Restricted engine room or compartment ventilation. bon monoxide in the accommodation space. This CO Detectors equipment is not recommended for use on Larson boats. MAINTENANCE - ENGINE PERFORMANCE Even with the best boat design and construction, together with the utmost care in inspection, operation and mainte-...
NAVIGATIONAL AIDS CHART REMEMBER THESE RULES LATERAL AIDS AS SEEN ENTERING FROM SEAWARD 1. OVERTAKING - PASSING: Boat being passed has the PORT SIDE STARBOARD SIDE SAFE WATER right-of-way. KEEP CLEAR. MID-CHANNELS OR FAIRWAYS EVEN NUMBERED AIDS ODD NUMBERED AIDS 2.
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CO intoxication. See your Larson dealer for 2. Prepare to assist the other craft unless your passen- assistance in diagnosing the cause of the alarm.
partment. This feeds oxygen to the fire and flashback are known to have failures in their predictions or informa- could occur. tion gathering equipment. There is no substitute for a strong understanding of what action to take when the 3. If the fire gets out of control, execute a distress signal, weather takes a turn for the worst.
• Have someone in the boat assume the responsibility for watching the person in the water and keep them in Fog is a result of either warm-surface or cold-surface con- sight while the boat maneuvers back to them. ditions. You can judge the likelihood of fog formation by •...
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not turn as many persons under the same conditions as a All hand portable fire extinguishers should be mounted in a Type I. readily accessible location, and away from the engine com- partment. All persons aboard should know the location and PFD TYPE III, WEARABLE proper operation of the fire extinguisher(s).
Boats operating between sunset and sunrise are required Federal and state laws require that every boat equipped to display appropriate navigation lights. All Larson models with propulsion machinery of any type must be registered are equipped with USCG approved lighting.
It is your MATERIALS THAT FLOAT responsibility to be aware of and adhere to all local laws con- cerning waste discharge. Consult with the coast guard, local OUTSIDE 25 MILES marina, or your Larson dealer for additional information. 1.21...
LARSON BOAT LOG Purchase Dealership Service Dealership Name ___________________________ Sales Manager ____________________ Name ___________________________ Service Manager ___________________ Address__________________________ Phone ___________________________ Address__________________________ Phone ___________________________ ________________________________ Fax _____________________________ ________________________________ Fax _____________________________ General Drive Unit Radio ____________________________________________________ __________________ ___________________ __________________ _______________ Serial Number...
LARSON CRUISE LOG Complete this page before going boating and leave it with a reli- Persons aboard _________________________________ The boat listed below should return by: able person who can be depended upon to notify the Coast Guard Name Address & Telephone No.
LARSON FUEL USAGE LOG Distance Distance Fuel Used Run Time Fuel Used Run Time Average Miles Average Miles Gallons Gallons Traveled Traveled Date Date (In Gallons) per Hour (In Hours) (In Gallons) per Hour per Hour (In Hours) per Hour...
Larson boat. You will see equipment safety labels at various locations on your boat. Larson Boats has displayed these labels to alert you to potentially hazardous situations. Please do your part by reading ALL safety labels. Understanding the information on these labels is of vital importance.
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WARNING GASOLINE VAPORS CAN EXPLODE BEFORE STARTING ENGINE *CHECK ENGINE COMPARTMENT FOR GASOLINE VAPORS. *OPERATE BLOWER FOR 4 MINUTES. RUN BLOWER BELOW CRUISING SPEED ALL STERN DRIVE MODELS CUDDY/BOWRIDER SAFETY LABELS...
Avoid brain damage or death later in this section. Depending on which Larson Boat from carbon monoxide. model you own, there could be fuses and/or circuit break- Keep cockpit and cabin areas well ventilated.
A typical 12-Volt DC cabin schematic is shown in Figure distribution panel. All required additional circuit protection 2.1. Consult your Larson dealer for additional DC power must also be added at the DC distribution panel. requirements on your Larson model.
Diagram is for general reference only, and is not specific to all models. All electric system work should only be performed by a qualified marine electrician. FIGURE 2.2 – TYPICAL SINGLE ENGINE SCHEMATIC...
Diagram is for general reference only, and is not specific to all models. All electric system work should only be performed by a qualified marine electrician. FIGURE 2.3 – SKI’n FISH BOW PANEL...
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NOTE: Fill and Vent and Sender location varies by model. See dealer for location. 1. Fuel Fill Plate – All Larson boats having an internal FIGURE 2.4 – FUEL SYSTEM...
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Some models are equipped with exhaust diverters. This DECKFILL two position valve directs the engine exhaust either to thru VENT hull exhaust pipes or down through the propeller hub. Directing the exhaust to the thru hull pipes results in more engine power and a higher noise level.
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NOTE: Fresh water tank must be empty before beginning 3. Drain entire system and flush with fresh water. sanitizing process. If necessary, empty the tank. IMPORTANT: Thoroughly flush entire system with fresh 1. In an appropriate size container, make a solution of water after treatment.
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Marine Sanitation Device (MSD) The Marine Sanitation Device (MSD), or head, installed on FIGURE 2.6 – ENCLOSED MARINE HEAD your Larson boat is a marine head (See Figure 2.6). This portable toilet (porta potti) provides simple operation and WITH PUMP-OUT convenient disposal of waste.
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CHINA HEAD OR MACERATOR HEAD TO OVERBOARD DISCHARGE (SEE FIGURE 2.7) PUMP-OUT VENT PORTA CHINA POTTI HEAD MACERATOR PUMP Y-VALVE COCK THRU-HULL FIGURE 2.7 – CHINA HEAD OR MACERATOR HEAD TO OVERBOARD DISCHARGE This porta potti version operates the same as the porta potti referenced in Figure 2.6, with some variances.
INLINE AC BREAKER (COCKPIT) BATTERY BLOWER BATTERY CHARGER AC HOOKUP DOCKSIDE ENGINE FUEL TANK BILGE PUMP DUAL BATTERY SWITCH (COCKPIT) TRIM TAB PUMP LOWER UNIT AND FLUID TRIM PUMP RESERVOIR FIGURE 2.8 – TYPICAL SINGLE ENGINE COMPARTMENT COMPONENTS The single engine compartment shown in Figure 2.8 pro- WARNING: When using electrical components, vides a means of locating components located within your observe basic safety precautions to reduce the risk of...
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Battery Dual Battery Switch and Optional Refrigerator Marine batteries are completely sealed using an absorbent The dual battery switch enables DC power to be used from electrolyte principle to provide high reserve capacity, plus one or two batteries. Power to the engine and all 12 volt cold cranking performance.
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Larson Boats recommends the use of only one (1) battery at its operation. a time. This is accomplished by using the number 1 or 2 set- ting.
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Carbon Monoxide (CO) Monitor (Optional) Some models are equipped with an automatic bilge pump. Rising water in the bilge activates a float switch to start the NOTE: Please read information describing the dangers of pump. When most of the water has been pumped out, the carbon monoxide poisoning found on pages 1.10 to 1.12.
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Spotlight/Floodlight (Optional) The drive unit on the lights is fully enclosed with a single WARNING: Never assume all explosive fumes have control switch for vertical and horizontal movement. It is been removed from the engine compartment. If you equipped with variable speed control for beam movement detect any fuel odors, shut down the engine and and an internal brake system for keeping the beam firmly electrical circuits, and immediately determine the...
Your boat is equipped with waterproof marine stereo speakers. The number of speakers and their location will The manual supplied by the windlass manufacturer con- change per Larson model. Some of the other features tains valuable safety information, operating and include AM/FM selector buttons, weather-band selector maintaining instructions, and anchoring tips.
Have motor, and the fish locator. These batteries are indepen- your Larson dealer install the adapter plug directly on the dent from the boat's direct current (DC) electrical system battery charger cables. Refer to the Trolling Motor section which is powered by your boat's starting battery.
Sparks or flames can ignite the gas and cause an explosion. of fishing ends. Figure 2.10 shows the livewell system on your Larson boat. ON OUTBOARD MODELS: LOCATED ON THE TRANSOM...
If you still have problems with the pump, contact your 3. Toggle the switch OFF when the livewell is filled. Larson dealer. Operate the livewell aerator as needed to freshen and ADDITIONAL SAFETY INFORMATION maintain the oxygen supply by aerating the water in the (SKI’n FISH MODELS)
Excessive tongue weight will cause the front end of the towing vehicle to sway. Insufficient tongue weight will Selection of a trailer for your Larson boat is extremely cause the trailer to sway or fishtail. important. Your trailer should be able to accommodate the weight of the boat, engine, and any other equipment that will normally be carried.
In case of Larson Warranty is void if the owner exceeds the rec- contact, flush with water at least 15 minutes. If swal- ommended capacity ratings.
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Launching Guidelines NOTE: For more specific information, refer to your trailer WARNING: During charging, batteries produce gases owner’s manual. which can explode if ignited. Explosion can shatter bat- tery. Acid can cause severe personal injury such as Here are some tips to remember when putting your boat in blindness.
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5. To keep the boat from drifting, the other end of the If you are mooring your boat for a short time, bow and mooring line must be secured by an individual or a stern lines may be the only lines you will need. If you are mooring element (i.e., dock cleat, pier pillar, etc.) mooring your boat for a longer time or if the currents are on shore.
When loading your Larson boat, remember to distribute the load evenly. Keep the load low and do not overload. The capacity plate affixed to your Larson boat states the maximum load capacity. The plate shows persons and gear in pounds that the boat will safely handle under nor- mal conditions.
Obtain advice from your Larson dealer before Weigh (pull in) Anchor purchasing an anchor.
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nation. Phase separation is common in alcohol blend fuels 5. Remove portable fuel tanks from the boat when filling. since alcohol absorbs water and separates from the fuel Wipe any spilled fuel from portable tanks before plac- causing a gasoline rich top layer, and an alcohol/water ing them in boat.
Check the engine oil level and fill if low. If oil level is full Instrumentation and gauge reading is low, contact your Larson dealer or a qualified mechanic to rectify the problem. Do not restart A full set of instruments, installed on your Larson boat, the engine until correcting the problem.
Power Trim Gauge – (Optional Some Models) various engine operating conditions. Consult with your Larson dealer if you require additional information. Do not exceed engine manufacturer’s recommendations. Indicates the relative position of the drive unit. This should be read carefully as it does not show position of the drive Speedometer unit in degrees.
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IMPORTANT: Allow the engine to warm up before engag- On twin engine boats, dual throttle consoles provide inde- ing the shift control. Monitor all instruments while engine is pendent control of both clutch and throttle operation of idling during warm up. See the engine manufacturer’s each engine.
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NEUTRAL. Depending on your speed, the dis- tance the boat travels until it comes to a complete stop will NOTE: For optional or Larson dealer installed controls, see vary. The ability to measure this distance will only be the information supplied by the manufacturer of the control.
STARTING PROCEDURES 6. Always operate the bilge blower for at least four (4) minutes before and while starting the engine, and any- The operation and maintenance manual supplied with your time you are operating your boat below cruising engine provides pre-start, starting, and cold-starting speeds.
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then back to the neutral position, and try to start engine boat, the operator should provide adequate ventilation in again. each of these areas. Utilize all hatches, doors, windows, and side vents to increase air movement. See Section 1 for 5.
Always look behind you and to both sides of the boat 3. In the case of low or heavy bow attitude, the lower unit before slowing down. Tell your passengers your intentions is normally trimmed too far under or forward. Trim the to allow them to make adjustments to their balance or unit out or up to correct this situation.
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increase in engine RPMs is evidence of cavitation. If On outboard engines without power trim, the trim angle this occurs accidentally while running at full throttle, can be controlled by using the following “Rule of Thumb”: If immediately lower the drive trim and reduce the throttle the bow runs low or heavy in the water, move the unit out until the slipping stops.
feel for how the trim tabs work. It is possible to extend the cylinder life expectancy on your trim tabs. To do this, keep the cylinders retracted while at dockside. Press both trim tab controls down until tabs reach their full up position. WARNING: Loss of Steering Control! Do not lower ENGINE SHUT DOWN the tabs all the way at high speeds.
5. Start engine on towing vehicle and pull trailer out of tion will help in your safety afloat if storms do occur: water to boat securing area. • Keep a watch on the horizon for approaching storm 6. Use tie-downs to secure boat on trailer. indicators.
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Operating in shallow water can present a number of haz- ards. Sand bars in narrow inlets are constantly shifting, Fog is a result of either warm surface or cold surface con- making it difficult to mark them with buoys. Sometimes ditions.
Capsizing • Watch for swimmers. Swimming areas may not be marked. Steer clear from the area and always remain alert. Wear PFD’s or have them readily available at all times. If your boat capsizes, and others were on board, locate them •...
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1. Make sure all persons aboard are wearing their PFDs. IMPORTANT: All persons aboard should know the location and proper operation of the fire extinguishers. 2. If you need help and your boat has a ship-to-shore radio, first contact the U.S. Coast Guard (VHF Channel GUIDELINES 16) or other rescue authorities immediately.
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Medical Emergency Steering Failure Accidents while boating can and may happen. Be pre- If a problem with the steering occurs, shut down the pared to handle these emergencies when they happen. engine immediately. Check the connections to the out- Keeping a first aid kit and dry blankets on board can assist board motor or drive unit in the engine compartment.
100 hours of operation contact your Larson dealer. Larson Boats recommends maintenance be performed at an authorized Larson dealer. 4 = Beginning of boating season/Every 12 months/Every The following information is of a general nature.
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TIME INTERVALS ITEM Engine & Drive System Clean: All gauges Spray ignition switch w/contact cleaner Control System Adjust throttle and shift Test “neutral” safety switch Lubricate cables and control Steering System Inspect linkage and connections Adjust steering Lubricate steering system AC &...
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TIME INTERVALS ITEM Fuel System Inspect: For fuel leaks and condition of fuel hoses Fuel pump & filter Fuel tank Clean fuel filter Fresh Water System Inspect: Fresh water tank Complete system Flush water system Ventilation & Drainage Check: Garboard (Hull) drain Operation of windshield wing vents Operation of bilge pump(s) Clean:...
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TIME INTERVALS ITEM Exterior Equipment Check: Compass for magnetic deviation Trim tab reservoir fluid level Trim tab system for leaks Clean navigational lights Seating & Canvas Clean upholstery Spray upholstery with Lysol™ Wash canvas Fiberglass Components & Hull Check rail and seat fastenings Clean fiberglass Wax hull sides and all non-tread areas Inspect fiberglass areas for damage...
Refer to your engine manual and use a common sense approach when rectifying problems. If the difficulty appears too complex or risky, contact your Larson dealer or a quali- DANGER: Do Not disconnect or reconnect battery fied Larson marine technician.
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If water enters engine through exhaust line, improper draining of exhaust system exists. Contact your Larson dealer or a qualified marine mechanic to correct problem. Engine cranks but will not start Lack of fuel Clean fuel filter, check fuel level, and check anti-siphon valve.
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PROBLEM CAUSE CORRECTION Low cranking speed Loose or dirty electrical connections or Check all related electrical connections damaged wiring and wires. Bad battery Test battery (See your engine manual). Engine oil too heavy for current Drain oil and refill with correct grade temperature and viscosity oil (See your engine manual).
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PROBLEM CAUSE CORRECTION Engine runs but misfiring Fouled spark plug(s) Remove and clean, replace as required. Improper timing Check timing and adjust as required (See your engine manual). Wet spark plug wires Inspect wires, wipe dry, replace damaged wires. Carbon tracked distributor Clean, replace as required.
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PROBLEM CAUSE CORRECTION Excessive fuel consumption Choke not properly adjusted Adjust choke as required. (continued) Float level too high Reset float level as required (See your engine manual). Blue exhaust smoke Lube level too high Drain off excessive oil. Oil too thin Drain and replace oil (See your engine manual).
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PROBLEM CAUSE CORRECTION Low oil pressure (continued) Excessive oil in crankcase Check and remove any excess amount of oil. Check for cause of excessive oil (improper filling, bad fuel pump, etc.). Diluted or improper grade and Change oil and oil filter, using the viscosity oil correct grade and viscosity oil.
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PROBLEM CAUSE CORRECTION Rough running Choke not operating Check choke linkages for binding or obstruction. Faulty fuel pump Refer to your engine manual for fuel pump testing procedures. Idle speed too low Check idle speed, adjust as required. Faulty ignition system components Service ignition system (See your engine manual).
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PROBLEM CAUSE CORRECTION Engine overheating (continued) Worn or broken impeller in seawater Replace impeller. pump Clogged oil cooler Remove obstruction. Exhaust lines plugged Remove obstruction. Ignition timing late Time engine. Choke valve locked closed Free choke valve movement. Collapsed water pump suction hose Install new hose.
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PROBLEM CAUSE CORRECTION Vibration Propeller bent or pitch out of true. Inspect propeller, replace as required. Damaged propeller shaft. Replace shaft. Loose engine mounting bolts. Inspect and tighten as required. Engine out of alignment. See your engine manual. 4.13...
You may want to have the hull of your boat coated with an years of service and enjoyment. By keeping your boat anti-fouling paint. Again, see your Larson dealer for appli- “shipshape”, you will be doing more than protecting your cation and cost.
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In the case of a break of this nature, the boat 3. Fair (smooth-out) all rough areas as required. should be returned to your Larson dealer for repair. 4. Clean bottom surface to remove all dust and foreign You will need the following items for minor repairs: materials.
Hardware and Fittings FOR MINOR REPAIRS FOLLOW THIS PROCEDURE: 1. Clean the area to be repaired and clear it of wax and Chrome, stainless steel, and aluminum hardware should oil. be cleaned with water and a cloth, followed with either an application of commercial aluminum or chrome cleaner.
Plastic windshields and port windows should be cleaned with clear water. After dirt is removed, Larson does not warrant damage to vinyl tops that might use a plastic window cleaner and non-abrasive polish. occur when a boat is being towed on a trailer with the top...
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1. Wet down all canvas. Use a soft bristle brush and scrub with a mild detergent and water solution. 2. Use a mild solution of ammonia/water and scrub for heavy soil or mildew build-up. Be sure to rinse thoroughly. 3. Brush or sweep underside of the top. Spray with Lysol™...
Your boat has structural components designed 2. Drain the outdrive and change lubricant. (Your Larson to support the boat when it is being lifted. Your dealer or dealer will perform No. 1 and No. 2 for a moderate fee.) marina operator should have the knowledge and equip- ment to safely lift your boat.
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Engine Lubrication 1. When draining the cooling system, make sure all plug openings are free of obstructions and marine growth. 1. Drain oil when engine is warm. This will ensure com- plete drainage of oil. If the engine oil contains sludge, 2.
Remote Bilge Pump INTERIOR CLEANING If your boat is equipped with a remote bilge pump, it must 1. Scrub all interior surfaces including cupboards, cabi- be completely drained if your boat will be exposed to freez- nets and drawers. ing temperatures. 2.
5. Attach the battery cables and tighten the cable clamps. with a storage cover, tarp or plastic (available from Larson Dealers)-especially if you live in an area of IMPORTANT: Do not apply petroleum jelly or marine heavy snow. Whatever material you use for a cover, be grade grease before connecting and tightening clamps.
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NAUTICAL TERMINOLOGY 7 Abaft Athwart Toward the stern. Across. Abeam Aweigh Amidships, at a right angle to the keel. Off the bottom, said of an anchor. Aboard On, in, or into a boat. Yes, while aboard a boat or ship. Means “I understand.”...
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Certificate Bilge The lower internal part of a boat’s hull. Government paper, such as a boat’s license. Bollard A strong post for holding lines fast. Chart A map of a body of water that contains The forward part or front of the boat. piloting information.
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Current Dunnage The movement of the water in a hori- Mats, boughs, pieces of wood, or other zontal direction. loose materials placed under or among goods carried as cargo in the hold of a Deadrise The rise of the bottom of a midships ship to keep them dry and to prevent frame from the keel to the bilge.
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Inland Rules Give-Way The one which must stay clear of ves- Rules of the road that apply to vessel Vessel sels which have the right-of-way. operation in harbors and certain rivers, lakes, and inland waterways. Grab Rail A convenient grip, on a cabin top or Intracoastal along a companion ladder.
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List Navigation (1) A continuous leaning to one side, The art of conducting a ship from port to often caused by an imbalance in port. stowage or a leak into one compart- Nautical Mile ment; (2) A light list is a printed listing of 6076.12 feet, or 1852 meters, an inter- aids to navigation, in geographical national standard;...
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Pier Scope A structure, usually wood or masonry, The length of the anchor rope or chain. extending into the water, used as a 6 to 1 scope means that the length of landing place for boats and ships. the anchor rope from the boat to the anchor is 6 times the depth of the water.
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Vessel Stow To store items neatly and securely. Every kind of watercraft, other than a seaplane on the water, capable of being Strake Planks running fore and aft on the out- used as a means of transportation on side of a vessel. water.
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Whistle Signal A standard communication signal between boats, to indicate change of course, danger, or other situations. Windward Situated on the side closest to the wind. (Opposite of leeward.) To swing or steer off course, as when running with a quartering sea.
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