Thump TSX-C 140BW User manual

MANUAL # 3598

tsx-c 125SW
tsx-c 140bw
Owner’s Manual
is motorcycle is designed and manufactured for competition use
in sanctioned closed-course event.
is manual should be considered a permanent part of the motorcycle
and should remain with the motorcycle when it is resold.
umpstar reserves the right to make changes at any time without
notice and without incurring any obligation.
is publication includes the latest production information available
before printing.
No part of this publication may be reproduced without written
permission.
is motorcycle pictured in this owner’s manual may not match
your actual motorcycle.
FOR OFF-ROAD USE ONLY
vr:1.2
vr:2.2

ese pages give an overview of the contents of your owner’s manual
Quick Reference .................................................................................... 1
Introduction ........................................................................................ 2
Motorcycle Assembly .......................................................................... 3
A Few Words About Safety .................................................................. 6
Motorcycle Safety ................................................................................. 7
Exhaust System ................................................................. 9
Fuel Handling .................................................................... 9
Safety Equipment ................................................................ 10
Message To Riders .............................................................................. 12
Loading, Accessories & Modications .............................................. 14
Safety Labels ........................................................................................ 16
Operating Controls ............................................................................. 17
Operation Component Locations ....................................... 17
Fuel Valve ......................................................................... 18
Choke Knob .................................................................... 19
Before Riding ..................................................................................... 20
Protective Gears ................................................................................. 21
Is Your Motorcycle Ready ................................................................... 22
Pre-Ride Inspection ........................................................................... 23
Basic Operation & Riding .................................................................. 25
Starting & Stopping the Engine ........................................................... 26
Shiing Gears ....................................................................................... 29
Braking ............................................................................................... 31
Parking ............................................................................................... 32
e Importance of your Maintenance ................................................ 33
Maintenance Safety ............................................................................. 35
Maintenance Schedule ........................................................................ 36
Maintenance ........................................................................................ 39
Front & Rear Brakes ....................................................... 39
Fuel Line and Tank ......................................................... 39
Oil Levels ........................................................................ 39
Replacing the Oil ............................................................. 40
Air Filter .......................................................................... 40
rottle ............................................................................. 41
Chain ................................................................................ 41
Contents

Contents
Tires ................................................................................. 42
General Cleanliness .......................................................... 42
Wiring Diagram .................................................................................. 43
Fuel ...................................................................................................... 44
Engine Oil ........................................................................................... 46
Carburetor Adjustment & Tuning Tips ............................................. 50
Air Cleaner .......................................................................................... 55
Cleaning ........................................................................... 56
rottle ............................................................................................... 57
Clutch System ..................................................................................... 60
Valve Clearance ................................................................................... 62
Engine Idle Speed ............................................................................... 64
Component Inspection ...................................................................... 65
Spark Plug ........................................................................ 65
Suspension ........................................................................ 68
Brakes ................................................................................ 70
Wheels .............................................................................. 73
Side Stand ......................................................................... 77
Tires & Tubes .................................................................... 78
Drive Chain ...................................................................... 82
Appearance Care ................................................................................ 86
Preparing for a Ride ........................................................................... 88
Transporting your umpstar ........................................................... 89
Storing your umpstar ..................................................................... 90
Troubleshooting ................................................................................. 92
You & the Environment ...................................................................... 95
Taking Care of the Unexpected .......................................................... 96
Vehicle Identication ........................................................................ 100
Oxygenated Fuels .............................................................................. 101
Specication ...................................................................................... 102
Spare Part Catalogue ......................................................................... 104
Torque Settings .................................................................................. 121
Parts Finder ....................................................................................... 126
Warranty ............................................................................................ 127
Disclaimer ......................................................................................... 128
Service Manual .................................................................................. 129
Title Ownership ................................................................................ 130

1
Quick Reference
Model Version SW VR:1.2 BW VR:2.2 (page 92)
Oil 4 Stroke10/40 950mls
Spark Plug Torch A7TC | NGK C7HSA
Tire Pressure 20 PSI Front / 20 PSI Rear
Tire Size SW 70/100-14 90/100-12 / BW 70/100-17
90/100-14
Valve Clearance .003” intake / .005” exhaust
Chain 428 x 114 Link
Air Filter 125cc 38mm / 140cc 42mm
Handle Bar 1 inch x 770mm wide
Wheel Bearings 15mm 6202
Swingarm Bearings 12mm 6201
Engine Mount Universal CRF50
Plastics 2018 TSmid Stealth
Brake Pad Front Part number# 3544 / 4.450.0090
Brake Pad Rear Part number# 3543 / 4.450.0110
Clutch Cable 125cc Neutral Start / 140cc Any Gear Start
900+135mm
rottle Cable 780+122mm

2
Introduction
Congratulations in your decision to purchase a Genuine
umpstar Dirt bike. e following manual has been prepared to
familiarise you with your motorcycle, and the procedures involved with
operating and maintaining the motorcycle.
is manual also outlines general safety recommendations. We strongly
advise that you take safety in mind at all times when maintaining and
operating you dirt bike.
umpstar condone safe riding and do not take any responsibility for any
damages caused to any persons or property due to inappropriate riding
and safety precautions umpstar Strongly recommends reading this
manual thoroughly BEFORE attempting any assembly or operation
of the bike. umpstar Strongly recommends the use of the correct
safety gear and safety procedures.
Warning: umpstar is only recommend riding privately on closed
course tracks by experienced riders and is not for general oroad
recreational use, before riding anywhere other than on private land
umpstar advise contacting your local road authority for further
information, laws and restrictions.
Please note: umpstar produce a range of dirt bikes, some photographs
and diagrams specic to component parts may dier slightly from the
model you have purchased/received. If in doubt at any point, please
contact a qualied mechanic or contact us for support.
Whenever you ride, tread lightly. By only racing in private closed
course tracks and approved riding areas, you help protect the
environment and keep o-road riding areas open for the future.
Please report any change of address or ownership to your dealer so
we will be able to contact you concerning important product information.
HAPPY RIDING!

3
Motorcycle Assembly
Always have a Qualied Mechanic Assemble Your New Motorcycle
Tools Required:
• Bike Stand
• Liing Jack
• 8, 10, 12, 13, 14, 17, 19mm socket
and spanner
• 5, 6mm Allen Key/Hex Tool
• Rubber Mullet
• WD 40
□ Tick box once task has been completed
□Remove Bike & all accessories from crate
□Install handlebars and route cables and front brake hose before install-
ing fork
□Front brake hose(1) should be at front, then throttle cable(2), clutch
cable(3), last the kill switch wire(4)
□e longer front wheel (1) spacer will always be installed on the le/disc
side (page 74)
□Fork Standard setting is 10mm out of clamp but depending on rider
preference, use copper grease on triple clamp bolts to prevent damage to
the alloy threads & then rmly tighten.
1
1
3
2
4
p
• Lubricant
• Grease
• Paint Pen
• read Lock Glue
• Zip Tie
• Tire Pressure Gauge

4
Motorcycle Assembly
□Use thread lock compound on front brake calliper bolts and torque to
9.9 N.M Pump front brake lever until rm (bleed if necessary). Check front
braking system for potential leaks or damage by pulling brake lever very
hard several times. Visually inspect all joints for leaks (page )
□Grease front axel - Recommend using “Anti Seize Grease” (page 74)
□Front wheel should spin freely, spin wheel to ensure calliper is releasing
from disk (page 70)
□Test rear brake pedal & repeat procedure described for front brake
(page 72)
□Check uid levels, top up with DOT4 where necessary (page 70)
□Fit front mudguard and ensure step washer are installed correctly.
□Fit foot pegs and use grease on foot peg pins
□Ensure the correct pressure in tires – (page 78)
□Loosen rear wheel & adjust chain tension. (page 82)
□Working from front to rear, ensure all nuts & bolts are tight. Safety
areas: Wheel nuts, brake calliper bolts, Top & rear engine bolts, chain
tensioners, rear shock bolts, triple clamp bolts (yokes), Handlebars, brake/
clutch/throttle, swing-arm, front & rear sprocket.
□Aer checking the torque settings (page 121), please reference mark
each bolt with paint marker. If any bolt does comes loose the lines will not
line up.
□Ensure nothing is touching the exhaust system.
□Ensure all cables pipes & wiring are away from moving components
such as the wheels, use cable/zip ties where necessary
□Fuel bike & check for fuel leaks (page 44)

5
□Check oil level with bike in upright position using dipstick (page 47)
□Check throttle and clutch is working correctly with freeplay adjusted
correctly (page 57 & 60)
□Ensure wheel spokes are tight & wheels run true (page 73)
□Inspect bike for any other defects
□Start engine & warm up (using choke if necessary). Set idle speed so
engine ticks over comfortably without stalling or racing. (page 64)
□Test machine ensuring that all controls are uid & functional. Ensure
brakes are working eciently (bearing in mind that the pads will need to
bed in prior to optimum performance).
Engine break-in
Run bike at no more than three quarter throttle & do not allow engine to
rev to a high speed. Engine break-in should be no less than one hour.
Aer one hours carry out the following checks & procedures:
□Drain oil & replace with 950mls quality 10w 30w or 10w 40 4-stroke
engine oil (page 48)
□Check all nuts & bolts & tighten where necessary (page 121)
□Check wheel spokes (especially rear wheel drive side) & tighten where
necessary
□Re-Adjust throttle cable & clutch cable if required (page 57 &60)
□Re-tension chain and lubricate
□Check wheel bearings for any sign of wear of free-play
□Check brake calliper operation & brake pad wear (page 70)
□Check tire pressures (page 78)
Remember to do pre-ride inspection each time you ride (page 23)
Motorcycle Assembly

6
A Few Words About Safety
Your safety, and the safety of others, is very important. And operating
this motorcycle safely is an important responsibility.
WARNING
Always use an
approved helmet &
protective gear
Never use
public roads
Never use with
drugs or alcohol
Never carry
passengers
is section presents some of the most important information and
recommendations to help you ride your motorcycle safely. Please take
a few moments to read these pages. is section also includes a
special message for parents and location information for the safety
labels on your motorcycle.
You WILL be KILLED or SERIOUSLY
HURT if you don’t follow instructions.
You CAN be KILLED or SERIOUSLY
HURT if you don’t follow instructions.
You CAN be HURT if you don’t follow
instructions.

7
Motorcycle Safety
umpstar Motorbikes strongly recommend that anyone considering
operating any of our products follow these instructions to avoid
serious injury and/or death:
Read this manual carefully and follow the operating procedures described.
Follow the age recommendation of the specic umpstar model.
Children under the age of 16 should be supervised by an adult
at all times. (Safety is the sole responsibility of parental guardians)
Never operate a bike without wearing an approved motorcycle
helmet that ts correctly.
umpstar strongly recommends the use of eye protection
(goggles and/or face shield), gloves, boots, long-sleeved shirt or
jacket, and long pants.
Never consume alcohol or drugs before or while operating any bike.
Never operate at speeds too fast for your skills or the conditions.
Always go at a speed that is appropriate for the terrain,
visibility and your experience.
Never attempt any kind of stunts
Always inspect your bike before each use to make sure it is in safe operating
condition.
Always keep both hands on the handlebars and both feet on the
footboards of the dirt bike during operation.
Always be alert to changing conditions of terrain, weather and visibility
whenoperating the bike.

8
Motorcycle Safety
Never operate on excessively rough, slippery or loose terrain.
Always follow proper procedures for turning as described in this manual.
Never attempt to turn the bike around on any slope until you
have mastered the turning technique described in this manual on
level ground. Avoid crossing the side of a steep slope if possible.
Never attempt to operate over large obstacles, such as large rocks
or fallen trees. Always follow proper procedures when operating
over obstacles as described in this manual.
Never operate a bike in fast owing water
Wet brakes may have reduced operating ability. Test your brakes aer
contact with water. If necessary, apply them several times to let friction
dry out the linings.
Always use the correct size and type of tires specied in this manual.
Always maintain proper tire pressure as described in this manual.
Never modify any bike through improper installation or use of accessories.
Never exceed the stated load capacity for any umpstar Motorbikes product.
Ensure the safe handling of ANY petrochemicals required for the
maintenance of your umpstar product.
umpstar Motorbikes will not be held responsible for violations of
local road laws, umpstar range of bikes are designed solely for
competition use in sanctioned, closed-course events

9
Motorcycle Safety
EXHAUST SYSTEM
umpstar Motorbikes advise that the exhaust on the machine can
become very hot during and following operation. To prevent burns,
avoid touching the exhaust system. Park the machine in a place where
Pedestrians or children are not likely to come in at contact.
FUEL HANDLING
Precautions should be taken when handling any type of petrochemicals.
Gasoline can catch re, and is toxic to life and the environment.
umpstar motorbikes recommend the following safety tips to avoid
accidents, injury/death:
Always turn o the engine when re-fuelling. Do not refuel right aer
the engine has been running and is still very hot.
Do not spill gasoline on the engine or exhaust pipe/muer when
refuelling.
When transporting the machine in another motorcycle, be sure it is kept
upright and that the fuel cock is in the “OFF” position. Otherwise,
fuel may leak out of the Carburetor or fuel tank.

10
Motorcycle Safety
Never refuel in any proximity to any sources of ignition such as smokers,
open ames or embers etc.
Gasoline is poisonous and can cause injuries, in the case of swallowing
gasoline, inhaling gasoline vapours or contact with eyes, see your
doctor immediately.
In the case of gasoline contact on your skin, wash with soap and water. If
gasoline spills on your clothing, change your clothes.
SAFETY EQUIPMENT
umpstar Motorbikes promote the use of safety equipment during
the use of your bike; the following list is an advisory guideline of the
equipment that should be obtained before using your bike for the rst
time, and to be used for every ride regardless of experience and skill level.
HELMET
A helmet is the most important piece of protective equipment and
should be worn at all times the motorcycle is being ridden.
Select a helmet that complies with the Standard Protective
helmets for motorcycle users. ese helmets meet the requirements for
on-road and o-road use.
Ensure the helmet ts the operator snugly, is securely fastened
and provides good, all-round visibility. A poorly-tting or loose helmet
can become dislodged in an incident and then oer no protection at all.

11
Motorcycle Safety
EYE PROTECTION
Recommended to prevent eye injuries and prevent branches, bugs,
dust or sand hitting your face and distracting you. Sunglasses are unlikely
to provide adequate physical protection.
GLOVES
Recommended to provide protection from abrasions and help to
keep your hands from getting sore, tired or cold. Note that gloves may
become slippery when wet and are not advisable for use
FOOTWEAR CLOTHING
Sturdy footwear is recommended
(preferably boots that come up
past your ankle with strong
material for gear changes.)
Arms and legs should be covered
to reduce abrasions to the body,
even in hot weather.
Trousers should be close-tting
and in good condition.

12
Message To Riders
Your safety is very important to umpstar. at’s why we urge
you to read this message before riding this motorcycle. O-road
riding can be fun. But, as with riding a bicycle, bad judgment can
result in injury, and we don’t want that to happen! You can help
prevent accidents by making good decisions about if, when,
and how you rides this motorcycle.
THINGS TO CONSIDER WHEN RIDING
e rst decision you’ll need to make is whether you’re
ready to ride. Riding readiness varies widely from one person
to another, and age and size are not the only factors. Remember
this model is designed for experienced riders only.
PHYSICAL ABILITY
An important consideration that riders must be big enough to hold the
motorcycle up, get on, and comfortably sit on the seat with both feet
touching the ground. ey should also be able to easily reach and
work the brakes, throttle, and all other controls.
ATHLETIC ABILITY
A necessary trait for riding a motorcycle. Generally speaking, you
should be good at riding a bicycle before getting on a motorcycle.
Can you judge speeds and distances while riding a bicycle
and react with proper hand and foot actions? Anyone who does
not have good coordination, balance, and agility is not ready
to ride this motorcycle and is not considered an experienced rider.

13
Message To Riders
MENTAL AND EMOTIONAL MATURITY
Do you think through problems and come to logical solutions?
On a bicycle, do you obey safe riding rules? Be honest!
Anyone who makes unnecessary risks, make bad judgments,
and don’t obey rules are not ready to ride this motorcycle.
If you decide that you’re ready to safely operate this motorcycle,
make sure you carefully read and understand the owner’s manual
before riding. Also be sure that you have a helmet and other
appropriate riding equipment, and always wears it when
operating the motorcycle or sitting on it.
SAFE AND RESPONSIBLE RIDING
When you put safety rst, you can enjoy more peace of mind, and
you can enjoy more hours of safe oroad riding.

14
Loading, Accessories & Modifications
umpstar was designed as a rider-only motorcycle. It was not designed
to carry a passenger or cargo. A passenger or cargo could interfere with
your ability to move around to maintain your balance and control of
the motorcycle
In addition, exceeding the weight limits or carrying an unbalanced load
can seriously aect your motorcycle’s handling, braking, and stability.
Adding accessories or making modications that change this
motorcycle’s design and performance can also make it unsafe. Also,
the weight of any accessories will reduce the maximum load the
motorcycle can carry
LOADING
How much weight you put on your motorcycle, and how you load it, are
important to your safety. is is a single rider bike and not recommended
for taking extra passengers.
We recommend that you do not carry any cargo on this motorcycle.

15
Loading, Accessories & Modifications
ACCESSORIES & MODIFICATION
Modifying your motorcycle or using non-umpstar accessories
can make your motorcycle unsafe.
ACCESSORIES
We strongly recommend that you use only umpstar Genuine Parts
and Accessories that have been specically designed or approved and
tested for your motorcycle. Because umpstar cannot test all other
accessories, you must be personally responsible for proper selection,
installation, and use of non-umpstar accessories. Check with your
dealer for assistance and always follow this guideline:
Make sure the accessory does not reduce ground clearance and
lean angle, limit suspension travel or steering travel, alter your riding
position, or interfere with operating any controls
MODIFICATIONS
We strongly advise you not to remove any original equipment or
modify your motorcycle in any way that would change its design or
operation. Such changes could seriously impair your motorcycle’s
handling, stability, and braking, making it unsafe to ride.
We also advise you not to make any modications or remove
any equipment that would make the motorcycle illegal in your area.

16
Safety Labels
WARNING
Not wearing a helmet increases
thechance of serious injury or
death in acrash. Be sure you
always wear a helmet,eye
protection and other protective
apparel when you ride.
WARNING
THIS BIKE IS A COMPETITION MODEL AND IS NOT
MANUFACTURED FOR, NOR SHOULD IT BE USED ON
PUBLIC STREETS, ROADS OR HIGHWAYS. THE USE OF
THIS BIKE SHOULD BE LIMITED TO PARTICIPATION IN
SANCTIONED COMPETITION EVENTS UPON A CLOSED
COURSE. THIS BIKE SHOULD NOT BE USED FOR
GENERAL OFF-ROAD RECREATIONAL RIDING. THIS
BIKE IS INTENDED FOR EXPERIENCE RACERS ONLY
NOT FOR BEGINNERS