Yamaha 5HN-28199-13, LIT-11626-16-27 User Manual
OWNER’S SERVICE MANUAL
TT-R90R
LIT-11626-16-27
5HN-28199-13
EC010000
TT-R90R
OWNER’S SERVICE MANUAL
©2002 by Yamaha Motor Corporation, U.S.A.
1st Edition, April 2002
All rights reserved. Any reprinting or
unauthorized use without the written
permission of Yamaha Motor Corporation
U.S.A. is expressly prohibited.
Printed in Japan
P/N. LIT-11626-16-27
INTRODUCTION
Congratulations on your purchase of a
Yamaha TT-R90R. This model is the culmination of Yamaha’s vast experience in the production of pacesetting racing machines. It
represents the highest grade of craftsmanship
and reliability that have made Yamaha a
leader.
This manual explains operation, inspection,
basic maintenance and tuning of your
machine. If you have any questions about this
manual or your machine, please contact your
Yamaha dealer.
OTE:
As improvements are made on this model,
some data in this manual may become outdated. If you have any questions, please consult your Yamaha dealer.
WARNING
READ THIS MANUAL CAREFULLY FOR
●
INSTRUCTIONS ON HOW TO PROPERLY
OPERATE THIS MACHINE.
ADULT INSTRUCTION AND SUPERVI-
●
SION ARE REQUIRED.
●
WEIGHT OF THE RIDER SHOULD NOT
EXCEED 40 kg (88 lb).
ALWAYS WEAR A HELMET AND SUIT-
●
ABLE PROTECTIVE CLOTHING WHEN
RIDING.
DO NOT TOUCH ANY MOVING PARTS OR
●
HEATED AREAS.
●
ALWAYS PERFORM PRE-OPERATION
CHECKS. REFER TO PAGE 15.
THIS MACHINE IS DESIGNED TO CARRY
●
THE OPERATOR ONLY.
NO PASSENGERS.
THIS MACHINE IS DESIGNED OFF-ROAD
●
USE ONLY.
IT IS NOT SUITABLE FOR ON-ROAD USE.
IMPORTANT NOTICE
This machine is designed for off-road use only
by young operators under adult instruction and
supervision. It is illegal for this machine to be
operated on any public street, road, or highway.
Off-road use on public lands may be illegal.
Please check local regulations before riding.
SAFETY INFORMATION
1. GASOLINE IS HIGHLY FLAMMABLE:
* Always turn off the engine when
refueling.
* Take care not to spill on the engine
or exhaust pipe/muffler, when refueling.
* Never refuel while smoking or in
the vicinity of an open flame.
2. If you should swallow some gasoline
or inhale a lot of gasoline vapor, or
allow some gasoline to get in your
eye(s), see your doctor immediately.
If any gasoline spills on your skin or
clothing, immediately wash it with
soap and water, and change your
clothes.
3. Always turn off the engine before
leaving the machine unattended.
When parking the machine, note the
following:
* The engine and exhaust pipe(s)/
muffler(s) may be hot. Park the
machine in a place where pedestrians or children are not likely to
touch the machine.
* Do not park the machine on a slope
or soft ground; the machine may
overturn.
4. When transporting the machine in
another vehicle, be sure is kept
upright and that the fuel cock is
turned to the “OFF”. If it should lean
over, gasoline may leak out of the carburetor or fuel tank.
5. Never start your engine or let it run for
any length of time in a closed area.
The exhaust fumes are poisonous and
may cause loss of consciousness and
death within a short time. Always
operate your machine in an area with
adequate ventilation.
6. Always wear a helmet, gloves, boots,
trousers, and jacket for motocross
riding.
1
2
3
4
5
6
7
SAFETY INFORMATION
1. Don’t ride it on the street.
2. Don’t run the engine inside a building.
3. This is a one-seater motorbike. Don’t give
any person a ride.
4. Let’s learn how to ride properly. Ask your
parents for any question.
5. When riding the machine, be sure to wear
the protective apparel as illustrated.
Helmet
Goggles
Mouth guard
Gloves
Boots
Motocross pants
Long sleeved trainer
6. When going for riding, be sure to be with
your family.
Never go alone.
7. Before riding the machine, ask your parents to check the machine very carefully.
8. Don’t touch the areas shown, or you’ll get
burnt in the hand.
9. Don’t touch rotating or moving parts.
10. Before starting the engine, be sure to shift
the transmission into neutral.
EC080000
HOW TO USE
THIS MANUAL
EC081000
PARTICULARLY IMPORTANT
INFORMATION
The Safety Alert Symbol means ATTENTION!
BECOME ALERT! YOUR SAFETY IS
INVOLVED!
WARNING
Failure to follow WARNING instructions could
result in severe injury or death to the machine
operator, a bystander, or a person inspecting
or repairing the machine.
CAUTION:
A CAUTION indicates special precautions that
must be taken to avoid damage to the
machine.
NOTE:
A NOTE provides key information to make procedures easier or clearer.
EC082000
FINDING THE REQUIRED PAGE
1. This manual consists of six chapters;
“General Information”, “Specifications”,
“Regular inspection and adjustments”,
“Engine”, “Chassis” and “Electrical”.
2. The table of contents is at the beginning
of the manual. Look over the general layout of the book before finding then
required chapter and item.
Bend the book at its edge, as shown, to
find the required fore edge symbol mark
and go to a page for required item and
description.
EC083000
MANUAL FORMAT
All of the procedures in this manual are organized in a sequential, step-by-step format. The information has been complied to provide the mechanic with an easy to read, handy reference that contains
comprehensive explanations of all disassembly, repair, assembly, and inspection operations.
In this revised format, the condition of a faulty component will precede an arrow symbol and the
course of action required will follow the symbol, e.g.
●
Bearings
Pitting/damage → Replace.
EC084002
HOW TO READ DESCRIPTIONS
To help identify parts and clarify procedure steps, there are exploded diagrams at the start of each
removal and disassembly section.
1. An easy-to-see exploded diagram 1 is provided for removal and disassembly jobs.
2. Numbers 2 are given in the order of the jobs in the exploded diagram. A number that is
enclosed by a circle indicates a disassembly step.
3. An explanation of jobs and notes is presented in an easy-to-read way by the use of symbol
marks 3. The meanings of the symbol marks are given on the next page.
4. A job instruction chart 4 accompanies the exploded diagram, providing the order of jobs,
names of parts, notes in jobs, etc.
5. Extent of removal 5 is provided in the job instruction chart to save the trouble of an unnecessary removal job.
6. For jobs requiring more information, the step-by-step format supplements 6 are given in addition to the exploded diagram and job instruction chart.
1
2
3
4
5
6
7
8
9
0
A
B
C
D
12
GEN
INFO
34
SPEC
INSP
ADJ
56
CHAS
78
90
AB
ENG
– +
ELEC
ILLUSTRATED SYMBOLS
(Refer to the illustration)
Illustrated symbols 1 to 6 are designed as
thumb tabs to indicate the chapter’s number
and content.
General information
Specifications
Regular inspection and adjustments
Engine
Chassis
Electrical
Illustrated symbols 7 to D are used to identify
the specifications appearing in the text.
With engine mounted
Special tool
Filling fluid
Lubricant
Tightening
Specified value, Service limit
Engine speed
Resistance ( Ω ), Voltage (V), Electric current (A)
T
.
R
.
CD
E F
E
G H
LS
IJ
LT
M
M
New
Illustrated symbols E to H in the exploded
diagram indicate grade of lubricant and location of lubrication point.
E Apply engine oil
F Apply molybdenum disulfide oil
G Apply lightweight lithium-soap base grease
H Apply molybdenum disulfide grease
Illustrated symbols I to J in the exploded
diagrams indicate where to apply a locking
agent and when to install new parts.
I Apply locking agent (LOCTITE®)
J Use new one
INDEX
– +
GENERAL INFORMATION
SPECIFICATIONS
REGULAR INSPECTION AND ADJUSTMENTS
ENGINE
CHASSIS
GEN
INFO
SPEC
INSP
ADJ
ENG
CHAS
1
2
3
4
5
ELECTRICAL
ELEC
6
CONTENTS
CHAPTER 1
GENERAL INFORMATION
DESCRIPTION ..........................................1-1
MACHINE IDENTIFICATION ....................1-2
IMPORTANT INFORMATION ................... 1-3
CHECKING OF CONNECTION ................. 1-5
SPECIAL TOOLS ......................................1-6
CONTROL FUNCTIONS ........................... 1-9
FUEL ....................................................... 1-11
STARTING AND OPERATION ...............1-12
CHAPTER 2
SPECIFICATIONS
GENERAL SPECIFICATIONS ................... 2-1
MAINTENANCE SPECIFICATIONS ......... 2-4
GENERAL TORQUE
SPECIFICATIONS ................................... 2-15
DEFINITION OF UNITS ........................... 2-15
CABLE ROUTING DIAGRAM ................. 2-16
CHAPTER 3
REGULAR INSPECTION AND
ADJUSTMENTS
MAINTENANCE INTERVALS ...................3-1
PERIODIC MAINTENANCE AND
LUBRICATION .......................................... 3-1
PRE-OPERATION INSPECTION AND
MAINTENANCE ........................................3-2
ENGINE ..................................................... 3-3
CHASSIS ................................................. 3-11
ELECTRICAL .......................................... 3-19
CHAPTER 4
ENGINE
CARBURETOR .........................................4-1
CYLINDER HEAD .....................................4-8
CAMSHAFT AND ROCKER ARMS ........ 4-13
VALVES AND VALVE SPRINGS ........... 4-16
CYLINDER AND PISTON .......................4-21
CLUTCH .................................................. 4-27
KICK AXLE ............................................. 4-33
SHIFT SHAFT ......................................... 4-34
OIL PUMP ............................................... 4-36
CDI MAGNETO .......................................4-39
CRANKCASE AND CRANKSHAFT ....... 4-41
SHIFT FORK, SHIFT CAM AND
TRANSMISSION .....................................4-44
CHAPTER 5
CHASSIS
FRONT WHEEL AND REAR WHEEL ....... 5-1
FRONT FORK ...........................................5-6
HANDLEBAR ............................................ 5-9
STEERING .............................................. 5-10
SWINGARM ............................................ 5-11
CHAPTER 6
ELECTRICAL
ELECTRICAL COMPONENTS AND
WIRING DIAGRAM ...................................6-1
IGNITION SYSTEM ................................... 6-2
CARBURETOR HEATING SYSTEM ........6-6
NOISE REGULATION ............................... 6-9
MAINTENANCE RECORD ........................ 6-9
1
GEN
DESCRIPTION
EC100000
GENERAL INFORMATION
EC110000
DESCRIPTION
1 “ENGINE STOP” button
2 Front brake lever
3 Throttle grip
4 Fuel tank cap
5 Kick starter
6 Fuel tank
7 Air cleaner
8 Rear brake pedal
9 Fuel cock
0 Starter lever (choke)
A Drive chain
B Shift pedal
C Front fork
OTE:
● The machine you have purchased may differ
slightly from those shown in the following.
● Designs and specifications are subject to
change without notice.
INFO
1 - 1
MACHINE IDENTIFICATION
EC120001
MACHINE IDENTIFICATION
There are two significant reasons for knowing
the serial number of your machine:
1. When ordering parts, you can give the
number to your Yamaha dealer for positive identification of the model you own.
2. If your machine is stolen, the authorities
will need the number to search for and
identify your machine.
EC121001
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number 1 is
stamped on the right of the steering head pipe.
GEN
INFO
1
1
ENGINE SERIAL NUMBER
The engine serial number 1 is stamped into
the elevated part of the left-side of the engine.
EC124000
MODEL LABEL
The model label 1 is affixed to the frame
under the rider’s seat. This information will be
needed to order spare parts.
1 - 2
IMPORTANT INFORMATION
EC130000
IMPORTANT INFORMATION
EC131002
PREPARATION FOR REMOVAL AND
DISASSEMBLY
1. Remove all dirt, mud, dust, and foreign
material before removal and disassembly.
When washing the machine with high
pressured water, cover the parts as follows.
● Silencer exhaust port
GEN
INFO
2. Use proper tools and cleaning equipment. Refer to “SPECIAL TOOLS” section.
3. When disassembling the machine, keep
mated parts together. They include
gears, cylinders, pistons, and other
mated parts that have been “mated”
through normal wear. Mated parts must
be reused as an assembly or replaced.
4. During the machine disassembly, clean
all parts and place them in trays in the
order of disassembly. This will speed up
assembly time and help assure that all
parts are correctly reinstalled.
1 - 3
5. Keep away from fire.
IMPORTANT INFORMATION
EC132000
ALL REPLACEMENT PARTS
1. We recommend to use Yamaha genuine
parts for all replacements. Use oil and/or
grease recommended by Yamaha for
assembly and adjustment.
EC133000
GASKETS, OIL SEALS AND O-RINGS
1. All gaskets, oil seals, and O-rings should
be replaced when an engine is overhauled. All gasket surfaces, oil seal lips,
and O-rings must be cleaned.
2. Properly oil all mating parts and bearings
during reassembly. Apply grease to the
oil seal lips.
GEN
INFO
EC134000
LOCK WASHERS/PLATES AND COTTER
PINS
1. All lock washers/plates 1 and cotter pins
must be replaced when they are
removed. Lock tab(s) should be bent
along the bolt or nut flat(s) after the bolt
or nut has been properly tightened.
EC135001
BEARINGS AND OIL SEALS
1. Install the bearing(s) 1 and oil seal(s) 2
with their manufacturer’s marks or numbers facing outward. (In other words, the
stamped letters must be on the side
exposed to view.) When installing oil
seal(s), apply a light coating of lightweight lithium base grease to the seal
lip(s). Oil the bearings liberally when
installing.
CAUTION:
Do not use compressed air to spin the
bearings dry. This causes damage to the
bearing surfaces.
1 - 4
IMPORTANT INFORMATION/
CHECKING OF CONNECTION
EC136000
CIRCLIPS
1. All circlips should be inspected carefully
before reassembly. Always replace piston pin clips after one use. Replace distorted circlips. When installing a circlip
1, make sure that the sharp-edged corner 2 is positioned opposite to the thrust
3 it receives. See the sectional view.
4 Shaft
CHECKING OF CONNECTION
Dealing with stains, rust, moisture, etc. on the
connector.
1. Disconnect:
● Connector
2. Dry each terminal with an air bower.
GEN
INFO
3. Connect and disconnect the connector
two or three times.
4. Pull the lead to check that it will not come
off.
5. If the terminal comes off, bend up the pin
1 and reinsert the terminal into the connector.
6. Connect:
● Connector
OTE:
The two connectors “click” together.
7. Check for continuity with a tester.
OTE:
● If there in no continuity, clean the terminals.
● Be sure to perform the steps 1 to 7 listed
above when checking the wireharness.
● For a field remedy, use a contact revitalizer
available on the market.
● Use the tester on the connector as shown.
1 - 5
GEN
SPECIAL TOOLS
SPECIAL TOOLS
The proper special tools are necessary for complete and accurate tune-up and assembly. Using the
correct special tool will help prevent damage caused by the use of improper tools or improvised
techniques. The shape and part number used for the special tool differ by country, so two types are
provided. Refer to the list provided to avoid errors when placing an order.
OTE:
● For U.S.A. and Canada, use part number starting with “YM-”, “YU-”, “YS-” or “ACC-”.
● For others, use part number starting with “90890-”.
Part number Tool name/How to use Illustration
YU-1083-A
90890-01084
90890-01085
YU-1268, 90890-01268 Ring nut wrench
Slide hammer set
Weight
Slide hammer bolt
These tools are used when removing or installing the
rocker arm shafts.
YU-1083-A 90890-01084
YU-1268 90890-01268
INFO
90890-01085
This tool is used when loosen the steering ring nut to
specification.
YU-3112-C, 90890-03112 Pocket tester
Use this tool to inspect the coil resistance, output
voltage and amperage.
YU-8036-B
90890-03113
YM-4019, 90890-04019 Valve spring compressor
YM-1300
90890-01294
Inductive tachometer
Engine tachometer
This tool is needed for observing engine rpm.
This tool is needed to remove and install the valve
assemblies.
Damper rod holder set
Damper rod holder
YU-3112-C 90890-03112
YU-8036-B 90890-03113
YM-4019 90890-04019
YM-1300 90890-01294
Use this tool to remove and install the damper rod.
YU-1304, 90890-01304 Piston pin puller set
This tool is used to remove the piston pin.
YU-1304 90890-01304
1 - 6
SPECIAL TOOLS
Part number Tool name/How to use Illustration
YM-1312-A, 90890-01312 Fuel level gauge
This gauge is used to measure the fuel level in the
float chamber.
YM-1326, 90890-01326 T-handle
This tool is used for holding the damper rod holder
when removing or installing the damper rod holder.
90890-01186 Fork seal driver attachment
This tool is used to installing the oil seal.
YM-8035, 90890-01311 Valve adjusting tool
YM-1312-A 90890-01312
YM-1326 90890-01326
YM-8035 90890-01311
GEN
INFO
90890-01186
This tool is necessary for adjusting valve clearance.
YM-33963, 90890-01184 Fork seal driver weight
This tool is used to installing the oil seal.
YM-34487
90890-06754
YM-33975, 90890-01403 Ring nut wrench
YM-91042, 90890-04086 Clutch holding tool
YS-1880-A, 90890-01701 Sheave holder
Dynamic spark tester
Ignition checker
This instrument is necessary for checking the ignition
system components.
This tool is used when tighten the steering ring nut to
specification.
This tool is used to hold the clutch when removing or
installing the clutch boss securing nut.
YM-33963 90890-01184
YM-34487 90890-06754
YM-33975 90890-01403
YM-91042 90890-04086
YS-1880-A 90890-01701
This tool is used for when loosening or tightening the
flywheel magneto securing nut.
1 - 7
SPECIAL TOOLS
Part number Tool name/How to use Illustration
YU-33270-B, 90890-01362 Flywheel puller
This tool is used to remove the rotor.
ACC-QUICK-GS-KT
90890-85505
Quick gasket®
YAMAHA Bond No. 1215
This sealant (Bond) is used for crankcase mating
surface, etc.
YU-33270-B 90890-01362
ACC-QUICK-GS-KT 90890-85505
GEN
INFO
1 - 8
CONTROL FUNCTIONS
EC150000
CONTROL FUNCTIONS
“ENGINE STOP” SWITCH
Make sure that the engine stop switch 1 is
positioned to “”. The engine stop switch has
been equipped to ensure safety in an emergency such when the machine is up set or
trouble takes place in the throttle system. The
engine will not start or run when the engine
stop switch is turned to “”.
SHIFT PEDAL
The gear ratios of the constant-mesh 3 speed
transmission are ideally spaced. The gears
can be shifted by using the shift pedal 1 on
the left side of the engine.
WARNING
When starting out on the machine, shift the
transmission into 1st after pulling in the
front brake lever and closing the throttle
grip.
GEN
INFO
KICK STARTER
WARNING
Before starting the engine, be sure to shift
the transmission into neutral.
Rotate the kick starter 1 away from the
engine. Push the starter down lightly with your
foot until the gears engage, then kick smoothly
and forcefully to start the engine.
EC155001
THROTTLE GRIP
The throttle grip 1 is located on the right handlebar; it accelerates or decelerates the
engine. For acceleration, turn the grip toward
you; for deceleration, turn it away from you.
1 - 9
CONTROL FUNCTIONS
EC156000
FRONT BRAKE LEVER
The front brake lever 1 is located on the right
handlebar. Pull it toward the handlebar to activate the front brake.
EC157000
REAR BRAKE PEDAL
The rear brake pedal 1 is located on the right
side of the machine. Press down on the brake
pedal to activate the rear brake.
GEN
INFO
FUEL COCK
The fuel cock supplies fuel from the tank to
carburetor while filtering the fuel. The fuel cock
has the three positions:
OFF: With the lever in this position, fuel will
not flow. Always return the lever to this
position when the engine is not running.
ON: With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
RES: This indicates reserve. If you run out of
fuel while riding, move the lever to this
position. FILL THE TANK AT THE
FIRST OPPORTUNITY. BE SURE TO
SET THE LEVER TO “ON” AFTER
REFUELING.
STARTER LEVER (CHOKE)
When cold, the engine requires a richer air/fuel
mixture for starting. A separate starter circuit,
which is controlled by the starter lever 1, supplies this mixture.
Pull the lever out to open the circuit (for starting) and push the lever in to close the circuit.
1 - 10
CONTROL FUNCTIONS/FUEL
FUEL TANK CAP
Remove the fuel tank cap 1 by turning
counter-clockwise.
WARNING
Do not overfill the fuel tank. Avoid spilling
fuel on the hot engine.
FUEL
Use regular gasoline. Always use fresh, name
brand gasoline.
WARNING
Do not overfill the fuel tank. Avoid spilling
fuel on the hot engine. Do not fill the fuel
tank above the bottom of the filler tube 1
as shown in the illustration or it may overflow when the fuel heats up later and
expands.
GEN
INFO
a Fuel level
Recommended fuel:
For USA, AUS and NZ:
Unleaded gasoline only
For CDN and EUROPE:
Regular unleaded gasoline
only
For ZA:
Regular gasoline
Fuel tank capacity:
Total:
4.1 L (0.90 lmp gal, 1.08 US gal)
Reserve:
0.5 L (0.11 lmp gal, 0.13 US gal)
CAUTION:
Use only unleaded gasoline. The use of
leaded gasoline will cause severe damage
to the engine internal parts such as valves,
piston rings, and exhaust system, etc.
1 - 11
STARTING AND OPERATION
GEN
INFO
STARTING AND OPERATION
CAUTION:
Prior to operating the machine, perform
steps listed in pre-operation check list.
WARNING
Never start your engine or let it run for any
length of time in a closed area. The exhaust
fumes are poisonous and can cause loss of
consciousness and death within a short
time. Always operate your machine in an
area with adequate ventilation.
STARTING A COLD ENGINE
WARNING
Before starting the engine, be sure to shift
the transmission into neutral.
1. Turn the fuel cock to “ON”.
2. Operate the starter (choke) and completely close the throttle grip.
3. Slide the “ENGINE STOP” switch to the
“”.
4. Kick the kick starter with full strength to
start the engine.
5. After the engine starts, warm up for one
or two minutes. Make sure the stater
(choke) is returned to the original position
before riding.
STARTING A WARM ENGINE
To start a warm engine, refer to the “Starting a
cold engine” section. The starter (choke)
should not be used. The throttle should be
opened slightly.
WARMING UP
To get maximum engine life, always “warm-up”
the engine before starting off. Never accelerate hard with a cold engine! To see whether or
not the engine is warm, see if it responds to
throttle normally with the stater (choke) turned
off.
WARNING
Before starting off, be sure to turn up or
remove the side stand.
Failure to retract the side stand completely
can result in a serious accident when you
try to turn a corner.
ENGINE BREAK-IN
Brake-in is important to better fit the moving
and sliding parts as well as the installed parts.
It is also important to accustom the rider to the
machine better.
Avoid full-throttle run on a new machine for the
first 5 hours.
After the trial run, check for loose parts, oil
leakage and other problems.
Make full inspection and adjustment especially
of slack cables and drive chain and loose
spokes.
CAUTION:
After the break-in period, check every fitting and fastener for looseness.
If any loose is found, retighten it securely.
CAUTION:
See “Engine break-in Section” prior to
operating engine for the first time.
1 - 12
GENERAL SPECIFICATIONS
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: TT-R90R (USA, CDN, AUS, NZ)
TT-R90 (Europe, ZA)
Model code number: 5HNB (USA)
5HNC (Europe, AUS, NZ, ZA)
5HND (CDN)
Dimensions:
Overall length 1,525 mm (57.0 in)
Overall width 605 mm (23.8 in)
Overall height 865 mm (34.1 in)
Seat height 625 mm (24.6 in)
Wheelbase 1,040 mm (40.9 in)
Minimum ground clearance 160 mm (6.3 in)
Basic weight:
With oil and full fuel tank 64 kg (141 lb)
Engine:
Engine type Air cooled 4-stroke, SOHC
Cylinder arrangement Single cylinder, forward inclined
Displacement 89 cm
Bore × stroke 47.0 × 51.8 mm (1.85 × 2.04 in)
Compression ratio 8.5 : 1
Compression pressure (STD) 1,000 kPa (10 kg/cm
Starting system Kick starter
Lubrication system: Wet sump
Oil type or grade:
Engine oil
0 10 30 50 70 90 110 130
˚F
(For USA and CDN)
At –10 ˚C (10 ˚F) or higher Å
Yamalube 4 (10W-30) or SAE 10W-30 type
SE/SF motor oil
Å
At 5 ˚C (40 ˚F) or higher ı
Yamalube 4 (20W-40) or SAE 20W-40 type
ı
SE/SF motor oil
3
(5.43 cu.in)
2
, 145 psi) at 1,000 r/min
SPEC
-20 -10 0
20
10
30 40 50
˚C
(Except for USA and CDN)
API “SE/SF” or higher grade
2 - 1
GENERAL SPECIFICATIONS
Oil capacity:
Engine oil
Periodic oil change 0.8 L (0.70 Imp qt, 0.85 US qt)
Total amount 1.0 L (0.88 Imp qt, 1.06 US qt)
Air filter: Wet type element
Fuel:
Type Unleaded gasoline only (USA, AUS and NZ)
Regular unleaded gasoline only (CDN, Europe)
Regular gasoline (ZA)
Tank capacity 4.1 L (0.90 lmp gal, 1.08 US gal)
Reserve amount 0.5 L (0.11 Imp gal, 0.13 US gal)
Carburetor:
Type VM16SH
Manufacturer MIKUNI
Spark plug:
Type CR6HSA/U20FSR-U
Manufacturer NGK/DENSO
Gap 0.6 ~ 0.7 mm (0.02 ~ 0.03 in)
Clutch type: Wet, multiple-disc and centrifugal automatic
Transmission:
Primary reduction system Spur gear
Primary reduction ratio 67/18 (3.722)
Secondary reduction system Chain drive
Secondary reduction ratio 35/14 (2.500)
Transmission type Constant mesh, 3-speed
Operation Left foot operation
Gear ratio: 1st 37/13 (2.846)
2nd 33/19 (1.736)
3rd 28/23 (1.217)
Chassis:
Frame type Double cradle
Caster angle 24.83˚
Trail 56.0 mm (2.2 in)
Tire:
Type With tube
Size (front) 2.50-14 4PR
Size (rear) 3.00-12 4PR
Manufacturer (front and rear) CHENG SHIN
Type (front and rear) KNOBBY
Tire pressure (front and rear) 100 kPa (1.00 kgf/cm
2
, 14.5 psi)
SPEC
2
2 - 2
GENERAL SPECIFICATIONS
Brake:
Front brake type Drum brake
Operation Right hand operation
Rear brake type Drum brake
Operation Right foot operation
Suspension:
Front suspension Telescopic fork
Rear suspension Swingarm (monocross suspension)
Shock absorber:
Front shock absorber Coil spring/oil damper
Rear shock absorber Coil spring/gas, oil damper
Wheel travel:
Front wheel travel 110 mm (4.33 in)
Rear wheel travel 93 mm (3.66 in)
Electrical:
Ignition system CDI magneto
SPEC
2 - 3
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