GPX MOTO 250e User guide
GPX MOTO
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This service manual is edited by GPXMOTO
No part of this publication may be reproduced without authorization.
GPXMOTO reserves the right to make changes at any time without notice and without incurring
any obligation.
The vehicle pictured in this owner’s manual may not match your actual vehicle.
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PREFACE
Congratulations on your purchase of a GPX motorcycle. We believe that you have made an
excellent choice ,which will give you great and reliable performance.
This Handbook and Manual will give you an understanding of our product. It has detailed the
complete range of specialized maintenance and adjustment schedules as well as the procedures
required.
This document also explains extensive troubleshooting methods as well as a comprehensive technical
specification. To assist you there are many photographs and guides to assist you.
Please read this manual carefully and carry out maintenance according to a professional standard.
carrying out the correct maintenance at the required schedule will effectively prolong the service
life of each component, improve the motorcycle and engine performance as well as the reliability of
the vehicle.
Riding motorcycles is dangerous and the GPX should not be operated with out the rider wearing a
helmet , goggles ,boots and gloves at the bare minimum.
It is expected that the operator has a good knowledge of riding and maintaining motorcycles. If you
do not , you should seeking specialised riding coaching and take your motorcycle to a GPX dealer
when adjustments or work is required. This is a basic handbook only. It expected that the operator
should have a much more comprehensive knowledge that this basic manual displays. If you do not ,
then take your motorcycle to a GPX dealer.
For the sake of technical development, GPXMOTO will reserve the right of modifying motorcycle
structure, equipment, and spare parts without notice. Due to that different markets have different law’s
requirement, we’ve adjusted model accordingly, the model image in this manual maybe not match your
actual vehicle. In addition, if there is any question concerning this manual, please visit our website
www.GPXMOTO.COM or WWW.GPXMOTOUK.COM and consult our customer service.
Alternatively you can call your GPX dealer for advice and assistance.
The contents of this manual are subject to change without prior notice due to vehicle
improvement. The actual state of the motorcycle in questions should determine the overall
level of maintenance required.
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MEANINGS OF REPRESENTATION
All work requires specialist knowledge and technical understanding. If you do not have the skill or
confidence to perform that, you must go to an authorized GPX workshop or GPX after-sale service
point. There, your motorcycle will be optimally cared for by specially trained experts using the
specialist tools required.
Other important information:
Please note that it is not practical or possible to warn you about all hazards associated with operating
or maintaining a motorcycle.
Therefore, you must have basic mechanical safety knowledge and use your own good judgement.
If you cannot complete the process of operating or maintaining, please consult a more experienced
senior technician before operation.
ADVICE
Motorcycles are very dangerous. Check your motorcycle carefully before every ride to ensure
everything is working correctly. Do not ride if you are under the influence. If you cannot ride a
motorcycles , do not ride a motorcycle. Its your life and wellbeing so be careful with it.
Most of off-road motorcycle fatalities are caused by head injuries. Without helmets, the chances of
serious injury or death caused by head injuries are much higher. Always wear an approved
motorcycle helmet and protective apparel such as goggles, gloves , knee and elbow protectors and
boots while riding, which will save your life at the critical moment.
This motorcycle was designed for off road racing , therefore there is no capacity to carry a
passenger .Please therefore do not use this motorcycle to carry any passengers. Ignoring this or order
rules could lead to serious injury or a fatality.
Always go riding with another person so you can help each other.
Do not use non-original parts to modify this motorcycle. If you need to replace any parts, please use
spare parts and accessory products that are approved and / or recommended by GPX and have them
installed by an authorized GPX workshop. GPX accepts no liability for any personal modification,
other products and any resulting damage or loss.
Our GPX series products are specially designed for off-road racing and riding.
Please take care of your vehicle and avoid any problem caused by improper use.
Please check your motorcycle carefully before riding and do the maintenance accordingly after use.
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If you crash the motorcycle, check the condition of the motorcycle before you resume your journey.
Ignoring this advice could easily lead to an accident and endanger your own safety as well as others ,
as you may be riding a broken or faulting motorcycle .
When using this motorcycle, the temperature of the engine and exhaust pipe is very high, so it needs
to a period to cool down after parking. During this period, do not touch the engine or exhaust pipe as
you will scold yourself.
Do not wear shorts while riding, otherwise leg injuries may happen.
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APPEARANCE
GPX 250e COMPONENTS AND POSITIONS
No.
Name
No.
Name
1
Rear number plate mount
14
Rear brake disc
2
Rear light and brake light
15
Rear wheel spindle
3
Rear mudguard
16
Rear wheel / chain adjuster
4
Silencer
17
Rear wheel security bolt
5
Rear suspension compression adjustment
18
Lowering suspension adjustment hole
6
Spark plug and cap
19
Rear suspension rebound adjustment
7
Petrol tank cap
20
Engine oil filler cap
8
Clutch lever
21
Rear brake lever
9
Front brake lever
22
Engine sump shield
10
Handebars
23
Front exhaust pipe
11
Headlight
24
Compression adjustment forks
12
Front mudguard
25
Front wheel spindle
13
Front suspension forks
26
Front wheel security bolt
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No.
Name
No.
Name
27
Front brake protector
32
Gear lever
28
Petrol tank tap / switch
33
Sine stand
29
Inline petrol filter
34
Air box cover
30
Oil strainer location
35
Rear chain guide
31
Electric start motor
36
Rear sprocket
Tips and Tricks and keep your GPX 250e in tip top condition.
Following these tips will help to serve you with a reliable and long lasting motorcycle
1. Read this handbook !
2. So you don’t forget and over run ,keep your own dated and mileage recorded list of when you carried
out this maintenance. Showing this record and keeping oil and parts receipts to a buyer in the future
will help to prove you have looked after your GPX.
3. Clean the air filter and lubricate this with air filter oil after each 4 hours of riding or each competition.
4. Check and adjust your engine oil level before each ride.
5. Use good quality fully synthetic 10W/40 motorcycle oil (full specification beneath)
6. Regularly clean the oil strainer and change your engine oil every 10 hours of riding or after each
competition.
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7. Check / adjust and lubricate your chain before each and every ride.
8. Wash your bike propertly and carefully. Avoid the air box, carburetor ,fuel tank vent hose, bearings
and electrical connector and components.
9. If you bike is running a little strange ,or not starting its highly likely that water from washing has
entered the carburetor. This can happen from time to time. Deal with it in 2 minutes using only a flat
ended screwdriver. Turn off the fuel and disconnect the fuel pipe from the petrol tank. Drain the
carburetor using the float bowl drain screw and blow / 10 psi air line down the fuel pipe for 10 seconds.
Reattached fuel line to tank and tighten drain screw. Turn on fuel and its amazing how many times this
will recifiy running problems. Its also often ignored during maintainence. Its best to complete this
procedure after every race or every month or 2 in any case.
10. Dry your motorcycle after you wash. Use an air line , paper or cotton towels or a leaf blower if you
have one. Start at the top and down downwards towards the floor, drying the wheels last.
11. If you are not confident or don’t know how to maintain a motorcycle speak to your dealer, or seasoned
motorcycle mechanics , not your neighbour .
12. Lightweight dirtbikes are not like cars.They need adjusting , tweaking and maintaining regularly. Its
just part of the fun. Speak to your dealer if you want reliable advice.
13. Check you brakes , throttle and clutch before each ride. Be safe.
14. If your unsure about anything …STOP and get good advice.
VIN CODE
Vin code of the GPX 250e ,is located on the head stock.
CHASSIS NUMBER
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PARAMETER
DIMENSIONS AND SPECIFICATION - GPX 250e
L*W*H（mm）
2180×820×1254
Wheelbase（mm）
1480mm
Net weight（kg）
110
Tire size
F: 80/100-21；R: 110/100-18. Rear will accept a 140 80/90 18” Enduro or
MX tyre
Seat height（mm）
939mm. This can be reduced by 55mm to 884mm by using the 2nd lower
shock bolt , at no expense.
Min ground clearance
（mm）
330mm
Tank volume（L）
9.4 litres
Engine Parameters
Engine type
Single cylinder, air cooled four stroke , overhead cam.Idle speed 1400
rpm
Clutch type
Wet type, Multiple disk
Cylinder
diameter×stroke
72×61.4mm
Displacement
229.9cc
Compression Ratio
9.2:1
Oil type /capacity
Fully synthetic 10W/40
Especially suitable for wet clutches
High wear resistance
API SN Plus (Euro 5 compatible)
JASO MA2
1.1 Litres and also to the correct dipstick height or a level surface.
Shift type
Constant meshing two-stage transmission six-speed transmission
International profile 1-N-2-3-4-5-6. Primary reduction ratio: 3.091
Transmission ratio of each gear:first gear: 2.909
Second gear: 1.786 Third gear: 1.375 Fourth gear: 1.167 Fifth gear: 0.9
Starting
12v Electric start with starter.CDI. Ignition Advance Angle: 15°
Fuel control system
Nibbi 30mm round slide carburettor with idle air and choke.
Battery
Stock 12v battery for high performance electric starting and reliable
electronics . YTX7A-BS
Chain
520-43T. Front is 13 teeth and rear 43.
Frame/Shock/Brake/Wheel system Parameters
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Frame type
Central double cradle type high-strength steel tube frame, GPX
International patent design
Front shock
SZC Front suspension. 310mm travel. Comprising of quality high
performance Telescopic, closed cartridge type units with adjustable
compression and rebound. Seals , dust seal and range of springs available
(after market), L=950mm.
Rear shock
Compression recovery dual adjustable nitrogen airbag rear shock,
L=480mm, 300mm travel , CRF general configuration.Quality high
performance unit with spring preload, adjustable compression as well as
rebound damping
Swing arm
High strength forged aluminium alloy structure
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Handlebar
Competitive high-strength aluminium alloy fat bar (imported),，material
7075 Φ28.6mm, with GPX special ultra-soft off-road grip
F/R rims
F 1.60×21, R 2.15×18, 7050 high strength aluminium rim ，
forged CNC wheel hub
F brake system
Powerful Hydraulic alloy twin piston caliper with 260mm disc
R brake system
Powerful Hydraulic alloy twin piston caliper with 240mm disc
Others
Air filter type
Sponge filter core filter type
Fuel type
92# and above grade gasoline.
Motorcyclists
1 person（rider）
Maximum load weight
120kg
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CONTROL
CLUTCH
The clutch is controlled by the clutch lever, which is
fitted on the left side of the handlebar.
By adjusting 2 the screws indicated you can change the
biting point of the clutch and the distance between the
clutch lever and handlebar to your preference.
FRONT DISC BRAKE
The front disc brake is controlled by the hand brake
lever, which is fitted on the right side of the handlebar.
By adjusting the small bolt on the lever you can change
the biting point of the lever and the distance of the
brake lever to your preference.
The front wheel adopts the floating - caliper disc brake,
which is installed under the left front fork and fixed by
two bolts.
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THROTTLE LEVER
er
The throttle lever is located on the right side of the
handlebar. The throttle is very sensitive.
Turn the throttle counter clockwise to increasing the
engine speed and power ouput. The reverse will reduce
the engine speed and power output. It will back to
normal smoothly once you lease the handle.
STARTING
The start button is a square one and fitted on the right
side of the handlebars, near the throttle grip.
It is expected that you will only need to press this button
for a maximum of 2 seconds to start the motorcycle .
Release the button as soon as the engine starts . If the
engine does not start , then visit the troubleshooting
pages for help.
Attention：When starting the motorcycle in any gear ,
you should operate the clutch with your left hand to
avoid possible sudden forward motion when starting the
GPX .
The TSE engine has a kick start also , as well as the
electric start through the start button.
STOPPING
The red stopping button is fitted on the left side of the
handlebar near the grip.
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FUEL TANK SWITCH
fuel tank switch
The fuel tank switch is located on the bottom left side
of the fuel tank. By turning the switch, you can control
the entrance of the fuel into into the carburettor.
The meaning of symbols on the oil tank switch is
shown as the left picture.
“ON”: indicates that the switch is opened for petrol
discharge.
“OFF”: indicates that the switch is closed, and the
petrol discharge is stopped.
“RES”: indicates that the reserve petrol is activated.
SHIFTING
The gear shift is located on the left side of the engine.
This is operated by the left foot by pushing down or by
pulling up with your foot.
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REAR DISC BRAKE
The rear brake pedal is located on the right side of the
engine and is operate by pushing down on it gently using
the right foot.
The rear brake adopts a floating caliper disc brake. This
is located on the right side of the rear wheel and fixed
by a disc brake bracket.
SIDE STAND SUPPORT
The GPX has a retractable side stand for parking.
When parking, make the stand is fully down. When
operating the motorcycle make sure the stand is
retained in the up position by use of the rubber band.
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PREPARING FOR USE
ADVICE ON FIRST USE
1. Before your first trip, read the entire operating instructions carefully, especially the section of
“Controls” and “Riding Instructions”.
2. When driving, please carry out a standardized run-in period first.
3. If any parts problems are found during using, you can repair that according to this manual or
contact GPX Dealers for professional aid.
4. After each use, clean the vehicle with running water.
5. GPX is not responsible for any vehicle problems caused by malicious acts
RUN-IN PROCESS
Motorcycle engines have a lot of relative moving parts, such as pistons, piston rings, cylinder
blocks, meshing transmission gears, etc. Therefore, in the initial stage of use, the engine must be
operated more gently than when riding afterwards . The running-in can make the moving parts
adapt to each other, correct the working gap, and form a good smooth friction surface that can
withstand larger loads. Only after standard running-in can the engine have excellent performance
and reliability.
The recommended running-in steps are as follows:
1.
0-2.5h stage: Using under the throttle level of 50% ~ 75%, the speed should be changed
frequently to avoid the motorcycle working at the same condition for a long time,
Let the engine rest and cool down for 5 ~ 10 minutes after each 1-hour work.
Do not accelerate suddenly to protect your throttle.
2.
2.5-4h stage: Using under the throttle level of 50% ~ 75% throttle and work for a long time at
the same condition.
In actual working, the throttle can be up to full level, but not more than 5 ~ 10 seconds;
3.
4-5h stage: Using under the throttle level of 75% ~ 100%
4.
More than 5h: increase the speed to 60 ~ 80km/h, until the full engine performance can be used.
DANGER：When riding a motorcycle, do not speed up regardless of the consequences. This
behaviour can easily cause engine damage and also cause safety accidents.
So, please ride the vehicle properly.
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