GP GPX Demon 150GR Manual
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GP GPX Demon 150GR Manual

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Congratulations to the new GPX Owner! GP Motor (Thailand) Co., Ltd. would like to thank you for
your trust in purchasing this motorcycle. With our sophisticated engineering innovation, GPX Demon
150GR is finely crafted to be one of the decent motorcycles one can desire for. The design is aimed for it
to be a handy, economy and easy to use motorbike, nevertheless safety and efficiency come as its true
ultimate.
Please study this owner's manual in order for you to enjoy all the advantages of the vehicle. This
manual also gives you the basic instructions on how to operate, keep proper care of your bike including
trouble-shooting tips. For further questions and helps please contact any GPX dealers near you.
Introduction
Yours sincerely,
GP Motor (Thailand) Co., Ltd.

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Summary of Contents for GP GPX Demon 150GR

  • Page 1 Introduction Congratulations to the new GPX Owner! GP Motor (Thailand) Co., Ltd. would like to thank you for your trust in purchasing this motorcycle. With our sophisticated engineering innovation, GPX Demon 150GR is finely crafted to be one of the decent motorcycles one can desire for. The design is aimed for it to be a handy, economy and easy to use motorbike, nevertheless safety and efficiency come as its true ultimate.

  • Page 2: Table Of Contents

    Contents - Safety Riding - General Information  Parts Location  Chassis Number/Engine Serial Number  Ignition Key  Fuel Tank Cap - Starting Engine  Fuel Tank Valve  Starter Lever (CHOKE) - Start Riding  Taking Off  Shifting Gear ...
  • Page 3 Contents - Inspection and Adjustment  Maintenance and Service  Engine Oil  Spark Plug  Maintenance and Adjustment  Air Filter  Battery  Brakes  Clutch  Drive Chain  Tires  Speedometer Setting  Cleaning  Motorcycle Care for Long Storage ...

  • Page 4: Safety Riding

    Safety to Riding Instructions for Safe Ride Perform pre-operation check each time you use the vehicle to make sure it is in safe condition. Always wear safety helmet, goggles, gloves and boots to help minimize the road accidents. This motorcycle is not designed to come with any shield to protect your body from crashing in an accident, therefore wearing the right gear could save your life.
  • Page 5 Use both front and rear brakes at the same time together for safer stop. Using one brake with too much force could make you lose control. Riding on the wet road, maintain your steady speed and use less the brakes. Riding down the hilly terrain, fully release the throttle to reduce speed and use both brakes simultaneously.
  • Page 6 Do not use low gear at the high speed or high rpm to avoid causing damage to the engine. At all time of riding your hands must be holding the handlebars and your feet are firmly on the pegs. Above rules are mandatory and need to be followed strictly for your safety, as well to keep the vehicle at its best performance and last longer.

  • Page 7: General Information

    General Information Parts Location 1) Mirror 2) Clutch Lever 3) Speedometer 4) Hand Brake 5) Right Hand Switch 6) Left Hand Switch 7) Ignition Switch Key 8) Fuel Tank Cap 9) USB Port...
  • Page 8 General Information Odometer 1) High Beam 2) Neutral Gear Light 3) Indicator 4) Tachometer 5) Fuel Gauge 6) Speedometer 7) Gear Position Light...
  • Page 9 General Information Left Handlebar 1) Clutch 2) Lights High/Low Beam 3) Indicators 4) Horn Right Handlebar 1) Engine Kill Switch 2) Ignition Switch...
  • Page 10 1. Main Head Light 6. Rear Drum Brake 2. Mirror 7. Engine 3. Seat 8. Front Brake Disc 4. Tail/Brake Light 9. Fuel Tank 5. Muffler 10. Full Fairing...

  • Page 11: Chassis Number/Engine Serial

    Chassis Number / Engine Serial Number 1. Chassis identification code number is embossed on the right side of the steering neck (A). 2. Engine serial code number is embossed on the right side of the gear lever pedal (B).

  • Page 12: Ignition Key

    Ignition Key Ignition Ignition key switches in 2 ways, i.e. LOCK, OFF and ON A. Key Slot B. ON Position C. OFF Position D. Steering LOCK Position...

  • Page 13: Fuel Tank Cap

    Fuel Tank Cap Opening - Lift the Key Lid - insert the key and turn clockwise - Lift the fuel cap Closing - Push the cap down - Pull off the key Seat Lock is located behind the rider (A) Seat Lock...

  • Page 14: Starting Engine

    Starting the Engine There are 2 ways to start the engine 1. Starting at neutral position 2. Starting at gear shifted - switch ignition to ON - switch to Position - squeeze and hold the clutch lever - push the start button...

  • Page 15: Fuel Tank Valve

    Starting the Engine Fuel Valve The valve can be switched in 3 ways, which are OFF, ON and RES At a normal use, the valve is at the ON position (B). When the fuel runs out, you can switch the valve to RES (D) position to use the reserved fuel which has about 1 litre in.

  • Page 16: Starter Lever (Choke)

    Cold Engine Starting Using the Choke to help Start Cold Engine Pull choke towards you Pull the choke knob towards you Turn the engine on as usual Allow the engine to warm up until ready (at about 60ᵒ C) Push the choke knob back to position You are good to go...

  • Page 17: Start Riding

    Riding Taking Off  Kick up the stand  Squeeze clutch (A)  Shift to first gear (tap down the shifter once)  Gently and slightly twist the throttle until the bike begins to move forward...

  • Page 18: Shifting Gear

    Riding Shifting Gear This motorcycle is designed to come with 6 gear speeds. The gear pattern starts with tapping one down for the 1 gear, pulling up for higher shifts and tapping down for lower shifts.  1 gear : pull the clutch towards you (A), at the same time shift into 1 gear by tapping downwards once on the shifter.
  • Page 19 Riding Speed to Shifting Speed Gear Position KM/Hr 10-20 20-40 40-60 60-70 70-80 80-120...
  • Page 20 Riding Braking  Close the throttle completely without using the clutch (unless you need to shift gear) to help slowdown the engine.  Gradually downshift until you are in the 1 gear and the bike stops.  Use both front brake (A) and rear brake (B) together ...

  • Page 21: Brakes

    Periodic Maintenance and Service Mileage Check List Description 1,000 4,000 7,000 10,000 Valve Clearance Check tightness, adjust if necessary • • • • Spark Plug Clean, change if necessary • • • • Air Filter Clean, change if necessary • •...

  • Page 22: Engine Oil

    Maintenance and Adjustment Engine Oil To keep the vehicle’s engine, gearbox and clutch work at its best performance, always maintain the level of the engine oil and change at regular intervals. Changing Oil 1. Run the engine in idle position to warm-up, then stop the engine. 2.

  • Page 23: Spark Plug

    Maintenance and Adjustment Spark Plug Remove/Change Spark Plug Remove the spark plug cap (B) Unthread the plug using a wrench included in the owner’s tool kit. Thread and tighten the new plug in by reversing the removal steps. Specified Spark Plug DENSO X24ES-U 0.6 - 0.7 mm Tightening Torque 20 Nm.

  • Page 24: Maintenance And Adjustment

    Maintenance and Adjustment Carburetor Adjustment (Idling Speed) Perform idling speed intervals check as regular as specified in the maintenance schedule, but before time, if it doesn’t work right you may try these Start the engine, allow it to warm up a while Wait till rpm drop to idle speed Have the engine idling speed tuned to 1200 rpm by adjusting the idle speed screw (A)

  • Page 25: Air Filter

    Maintenance and Adjustment Air Filter When air filter is dirty, it affects the engine performance and fuel economy, and possibly deteriorates the spark plug. Remarks : Avoid storing things in the seat for better air flow. Removing the Air Filter ...

  • Page 26: Battery

    Maintenance and Adjustment Battery This motorcycle is equipped with the VRLA battery. There is no need to check or add distilled water. Removing Battery  Remove the passenger’s seat  Remove the rider’s seat  Remove the rubber strap  Remove the battery leads, first the negative (-), then the positive (+) respectively for safety reason ...

  • Page 27: Brakes

    Maintenance and Adjustment Brakes Front Brake / Brake Disc If the brake pad had worn to less than 1 mm thick, have both as a set changed. Brake Fluid  The fluid level must always be above the minimum mark (A).
  • Page 28 Maintenance and Adjustment Brakes Rear Brake / Brake Disc If the brake pad had worn to less than 1 mm thick, have both as a set changed. Brake Fluid  The fluid level must always be above the minimum mark. If you find the fluid is low as to hitting the bottom level, check the followings : Check brake pads for wear, change if...

  • Page 29: Clutch

    Maintenance and Adjustment Clutch Worn out clutch makes it difficult to shift gears and may even cause damage to gearbox. Therefore it is necessary to have the clutch checked and adjusted per scheduled.  Turn the cable adjuster nut which is located on the right of the engine (A) ...

  • Page 30: Drive Chain

    Maintenance and Adjustment Drive Chain Checking the drive chain slack Place the bike on the side stand Push up and press down the midway point between the front and rear sprockets. If the slack found too low, adjust it to the 10-20 mm. Specified Tension : 10-20 mm...

  • Page 31: Tires

    Maintenance and Adjustment Tires Checking air pressure Keeping the tires air pressure up to the specification gets it the best traction and performance on the road. Checking the pressure  Unscrew the valve stem cap (A)  Use tire pressure gauge to read the pressure Pressure Tire Size Front...

  • Page 32: Speedometer Setting

    Odometer Setting 1) Press the left button for TOTAL or TRIP 2) At TRIP, press and hold RESET to set 0 Meter Light Setting 1) Press the right button to choose the light color 2) Press and hold the right button to adjust the brightness Clock Setting 1) Go to TOTAL...

  • Page 33: Cleaning

    Maintenance and Adjustment Cleaning Frequent and proper care taking will keep your bike looking good, extend its life and optimize its performances. Besides cleaning, use the breathable and UV protection cover to keep your bike away from dust or tiny particles that may harm the paint coat. The engine and muffler need to be really cold before you do washing.
  • Page 34 Maintenance and Adjustment Cleaning Pay attention not to make scratches when cleaning the headlight and those plastic parts. Avoid using high-pressure water spray where seals and electric components are, water seepage can cause damage. Make sure not to spray water to clean the following delicate parts : airbox, ECU, brakes, all electric connectors, muffler hole, fuel tank cap.
  • Page 35 Maintenance and Adjustment Cleaning Dry and lube the drive chain to prevent it from rusting. ---------------------------------------------------------Notice--------------------------------------------------------------  Immediately wash your bike after riding near the sea road or getting wet with sea-salt water. Do not use the warm water, it increases the corrosive action of the salt. ...
  • Page 36 Maintenance and Adjustment Cleaning Plastic parts Dry plastic parts with soft cloth after washing, headlight lenses and all other plastic parts. Polish with motorcycle plastic care product. Important Notes : Using common home cleaner can easily damage the motorcycle’s plastic parts, e.g. benzene, brake fluid, glass cleaner, thread locker, etc.
  • Page 37 Maintenance and Adjustment Cleaning Chrome and Aluminium After washing, use a chrome polish to shine the chrome and aluminium parts or apply a corrosion protection spray on both metal parts. Cleaning aluminium wheels (coated or non-coated), use only the non-acidic aluminium wheel cleaner to avoid damages.

  • Page 38: Motorcycle Care For Long Storage

    Maintenance and Adjustment Cleaning CAUTION Be cautious with the tire dressing, apply where it does not make contact with the ground. This may cause bad grip and loss of control. ------------------------------------------------Long-time Storage-------------------------------------------- Preparing your bike for long storage  Clean your bike ...
  • Page 39 Maintenance and Adjustment Long-time Storage  Empty completely the fuel tank. Drain the carburetor float chamber by loosening the drain bolt located at the bottom; this is to prevent fuel deposits from building up causing the transmission to clog. CAUTION Gasoline commonly gives amount of flammable vapours.
  • Page 40 Maintenance and Adjustment Long-time Storage CAUTION Be careful! Oil can squirt to your eye or face while injecting it in to the spark plug hole. If this happens rinse with lots of water and rush to doctor to make sure it won’t sustain permanent damage.

  • Page 41: Specifications

    Specification Engine 149 cc, 4 strokes Serial Demon 150 GR Cylinder Cooling System Air-cooled Bore x Stroke 63 mm x 48 mm Produces Max. Power 10.5 kw at 8,000 rpm. Starting System Electric Starter Ignition System Clutch Wet type Gear 6 speed Dimensions 750 x 1,835 x 1,050 mm...
  • Page 42 Specification Wheelbase 1,230 mm Weight 130 kg Idle Speed 1,200 rpm Gear Ratio : 3.80 : 1 2.06 : 1 1.45 : 1 1.13 : 1 0.95 : 1 0.81 : 1 Battery 12v – 6.3Ah Front Light Tail Light Fuel Tank Capacity 8 Litre...
  • Page 43 Notes ………………………………………………………………………………………………….……………………………………… …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. ………………………………………………………………………………………………….……………………………………… …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. ………………………………………………………………………………………………….……………………………………… …………………………………………………………………………………………………………………………………………. ………………………………………………………………………………………………………………………………………….
  • Page 44 Notes ………………………………………………………………………………………………….……………………………………… …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. ………………………………………………………………………………………………….……………………………………… …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. …………………………………………………………………………………………………………………………………………. ………………………………………………………………………………………………….……………………………………… …………………………………………………………………………………………………………………………………………. ………………………………………………………………………………………………………………………………………….

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