Yamaha XN125 (2000), XN150 (2000) Service Manual
XN125
2000
XN150
5MF1-AE2
SERVICE MANUAL
EASM0000
XN125 / XN150
SERVICE MANUAL
© 2000 by MBK Industrie
2nd edition, April 2001
All rights reserved.
Any reproduction or unauthorized
use without the written
permission of MBK Industrie
is expressly prohibited.
EAS00005
IMPORTANT MANUAL INFORMATION
Particularly important information is distinguished in this manual by the following.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY
IS INVOLVED!
Failure to follow WARNING instructions
could result in severe injury or death to
the scooter operator, a bystander or a person checking or repairing the scooter.
A CAUTION indicates special precautions that must be taken to avoid damage
to the scooter.
A NOTE provides key information to make procedures easier or clearer.
NOTE:
WARNING
CAUTION:
EASM0001
NOTICE
This manual was produced by the MBK Industrie primarily for use by Yamaha and MBK dealers and
their qualified mechanics. It is not possible to include all the knowledge of a mechanic in one manual.
Therefore, anyone who uses this book to perform maintenance and repairs on Yamaha and MBK
vehicles should have a basic understanding of mechanics and the techniques to repair these types
of vehicles. Repair and maintenance work attempted by anyone without this knowledge is likely to
render the vehicle unsafe and unfit for use.
MBK Industrie is continually striving to improve all of its models. Modifications and significant changes in specifications or procedures will be forwarded to all authorized Yamaha and MBK dealers and
will appear in future editions of this manual where applicable.
NOTE:
Designs and specifications are subject to change without notice.
TECHNICAL DOCUMENTATION
MBK INDUSTRIE
EAS00007
HOW TO USE THIS MANUAL
This manual is intended as a handy, easy-to-read reference book for the mechanic. Comprehensive
explanations of all installation, removal, disassembly, assembly, repair and check procedures are
laid out with the individual steps in sequential order.
햲 The manual is divided into chapters. An abbreviation and symbol in the upper right corner of each
page indicate the current chapter. Refer to "SYMBOLS".
햳 Each chapter is divided into sections. The current section title is shown at the top of each page,
except in Chapter 3 ("PERIODIC CHECKS AND ADJUSTMENTS"), where the sub-section title(s)
appears.
햴 Sub-section titles appear in smaller print than the section title.
햵 To help identify parts and clarify procedure steps, there are exploded diagrams at the start of each
removal and disassembly section.
햶 Numbers are given in the order of the jobs in the exploded diagram. A circled number indicates
a disassembly step.
햷 Symbols indicate parts to be lubricated or replaced. Refer to "SYMBOLS".
햸 A job instruction chart accompanies the exploded diagram, providing the order of jobs, names of
parts, notes in jobs, etc.
햹 Jobs requiring more information (such as special tools and technical data) are described
sequentially.
ENG
ENG
EASM0025
CYLINDER AND PISTON
Removing the cylinder and piston
Remove the parts in the order listed.
Cylinder head
Refer to “CYLINDER HEAD” section.
1 Cylinder bolt
2
2 Timing chain guide (exhaust side)
1
3 Cylinder
1
4 Dowel pin
2
5 Cylinder gasket
1
6 Piston pin clip
2
7 Piston pin
1
8 Piston
1
9 Piston ring (top)
1
10 Piston ring (2nd)
1
11 Oil ring
1
For installation, reverse the removal
procedure.
EAS00253
REMOVING THE CYLINDER AND PISTON
1. Remove:
•piston pin clip 햲
•piston pin 햳
•piston 햴
CAUTION:
Do not use a hammer to drive the piston pin
out.
NOTE:
•Before removing the piston pin clip, cover the
crankcase opening with a clean rag to prevent
the piston pin clip from falling into the crankcase.
• Before removing the piston pin, deburr the
piston pin clip’s groove and the piston’s pin
bore area. If both areas are deburred and the
piston pin is still difficult to remove, remove it
with the piston pin puller.
Piston pin puller
90890-01304
2. Remove:
•top ring
•2nd ring
•oil ring
NOTE:
When removing a piston ring, open the end gap
with your fingers and lift the other side of the ring
over the piston crown.
EAS00255
CHECKING THE CYLINDER AND PISTON
1. Check:
•piston wall
•cylinder wall
Vertical scratches → Rebore or replace the
cylinder, and replace the piston and piston
rings as a set.
4 - 23 4 - 24
CYLINDER AND PISTON CYLINDER AND PISTON
Order Job/Part
Q’ty Remarks
햲
햳
햴
FWD
1
2
3
4
5
6
7
8
9
10
11
T
.R
12 Nm (1.2 m•kg)
햲
햹
햳햴햵
햶
햷
햸
COOL
GEN
INFO
ENG
SPEC
햲햳
햵햴
햶
햷
햸햹
햺햻
햽
햾
햿헀
헁헂
헅
쎻
22
쎻
23
헄헆
쎻
21
쎻
24
쎻
25
EAS00008
SYMBOLS
The following symbols are not relevant to every
vehicle.
Symbols
햲 to 햺 indicate the subject of each
chapter.
햲 General information
햳 Specifications
햴 Periodic checks and adjustments
햵 Engine
햶 Cooling system
햷 Carburetor
햸 Chassis
햹 Electrical system
햺 Troubleshooting
Symbols
햻 to 헃 indicate the following.
햻 Serviceable with engine mounted
햽 Filling fluid
햾 Lubricant
햿 Special tool
헀 Tightening torque
헁 Wear limit, clearance
헂 Engine speed
헃 Electrical data
Symbols
헄 to 쎻
23
in the exploded diagrams indicate
the types of lubricants and lubrication points.
헄 Engine oil
헅 Gear oil
헆 Molybdenum disulfide oil
쎻
21
Wheel bearing grease
쎻
22
Lithium soap base grease
쎻
23
Molybdenum disulfide grease
Symbols
쎻
24
to 쎻25 in the exploded diagrams
indicate the following.
쎻
24
Apply locking agent (LOCTITE®)
쎻
25
Use a new one
T.R
TRBL
SHTG
ELEC
CHAS
CARB
CHK
ADJ
헃
GENERAL INFORMATION
SPECIFICATIONS
PERIODIC CHECKS AND
ADJUSTMENTS
ENGINE OVERHAUL
COOLING SYSTEM
CARBURETOR
CHASSIS
ELECTRICAL SYSTEM
TROUBLESHOOTING
1
2
3
4
6
7
8
9
TRBL
SHTG
GEN
INFO
SPEC
CHK
ADJ
ENG
CARB
ELEC
CHAS
5
COOL
EAS00010
TABLE OF CONTENTS
1
GEN
INFO
CHAPTER 1.
GENERAL INFORMATION
SCOOTER IDENTIFICATION ........................................................................1-1
VEHICLE IDENTIFICATION NUMBER .................................................... 1-1
MODEL LABEL ........................................................................................ 1-1
FEATURES ................................................................................................... 1-2
OIL INDICATOR LIGHT ...........................................................................1-2
ODOMETER/TRIPMETER READING MODE ......................................... 1-2
BATTERY VOLTAGE/FUEL GAUGE ......................................................1-2
THE CLOCK ............................................................................................. 1-3
AUTO-CHOKE SYSTEM ......................................................................... 1-3
IMPORTANT INFORMATION ...................................................................... 1-4
PREPARATION FOR REMOVAL AND DISASSEMBLY ........................ 1-4
REPLACEMENT PARTS ........................................................................ 1-4
GASKETS, OIL SEALS AND O-RINGS .................................................. 1-4
LOCK WASHERS/PLATES AND COTTER PINS ................................... 1-5
BEARINGS AND OIL SEALS .................................................................. 1-5
CIRCLIPS ................................................................................................ 1-5
CHECKING THE CONNECTIONS ............................................................... 1-6
SPECIAL TOOLS .......................................................................................... 1-7
GEN
INFO
GEN
INFO
SCOOTER IDENTIFICATION
EAS00015
GENERAL INFORMATION
SCOOTER IDENTIFICATION
EASM0002
VEHICLE IDENTIFICATION NUMBER
The vehicle identification number 햲 is stamped
into the frame.
EASM0003
MODEL LABEL
The model label 햲 is affixed under the seat.
This information will be needed to order spare
parts.
1-1
ZAUM0071
햲
ZAUM0072
햲
GEN
INFO
1-2
FEATURES
EASM0004
FEATURES
OIL INDICATOR LIGHT
• FUNCTION
Pulses (travel distance signals) from the speedometer are counted and cause the oil indicator light
to come on at 500 km for the first time and thereafter every 3,000 km. In this way, the light indicates
the time for oil change.
• RESETTING PROCEDURE
To reset the oil change indicator light
1) Press the “TRIP” button while turning the key to “ON”.
2) Release the button and the oil change indicator light will go off.
NOTE:
To reset the oil change indicator light before the periodic oil change interval has been reached, follow
the above procedure.
ODOMETER/TRIPMETER READING MODE
The odometer and tripmeter can be set to count in either miles or kilometers according to the following
procedure.
1) Turn the key to “ON”.
2) Press the “TRIP” button until the current mode appears in the dispaly:
“CONT” (continental) for kilometer mode and “EnGL” (English) for the mile mode.
3) Press the “TRIP” button to switch mode.
4) Press the “TRIP” button for two seconds to confirm the setting.
NOTE:
• The odometer/tripmeter reading mode can be changed any number of times while the odometer
reading is below 10, but it cannot changed anymore after the reading has reached 10.
• Switching between the mile and the kilometer mode does not change or convert the current odometer/
tripmeter reading.
BATTERY VOLTAGE/FUEL GAUGE
When the key is turned to “OFF”, the voltage/fuel gauge indicates the battery voltage.
NOTE:
If the battery voltage drops to 10V, refer to “CHECKING THE BATTERY” section in chapter 3.
When the key is turned to “ON”, the voltage/fuel gauge indicates the amount of fuel in the fuel tank
after indicating the battery voltage for two seconds.
GEN
INFO
THE CLOCK
• Setting the clock
To set the clock:
1) Make sure that the key is turned to “OFF”.
2) Press the “TRIP” button for two seconds and the hour display will flash.
3) Press the “TRIP” button to set the hours.
4) Press the “TRIP” button for two seconds, and the first minute digit will flash.
5) Press the “TRIP” button to set the first minute digit.
6) Press the “TRIP” button for two more seconds, and the second minute digit will flash.
7) Press the “TRIP” button to set the second minute digit.
8) Press the “TRIP” button for two seconds to set the clock.
AUTO-CHOKE SYSTEM
This system is the parallel connection of the ignitor unit circuit and the thermo switch as shown,
detecting the engine temperature, and facilitates the restarting with the warm engine.
• Circuit diagram
• Auto-choke operation
FEATURES
Main switch
Fuse
Battery
Thermo
switch
Auto-choke
Ignitor unit
C.P.U
Ignition
Engine condition
Start with the Crank with the Crank with the Restart with the
cold engine cold engine warm engine warm engine
Thermo switch OFF OFF ON ON
Ignitor unit circuit OFF ON ON OFF
Auto-choke Activates Activates Not activate Not activate
1-3
GEN
INFO
EAS00020
IMPORTANT INFORMATION
PREPARATION FOR REMOVAL AND
DISASSEMBLY
1.Before removal and disassembly, remove all
dirt, mud, dust and foreign material.
2.Use only the proper tools and cleaning equipment.
Refer to the “SPECIAL TOOLS”.
3. When disassembling, always keep mated parts
together. This includes gears, cylinders, pistons and other parts that have been “mated”
through normal wear. Mated parts must always be reused or replaced as an assembly.
4.During disassembly, clean all of the parts and
place them in trays in the order of disassembly. This will speed up assembly and allow for
the correct installation of all parts.
5.Keep all parts away from any source of fire.
EAS00021
REPLACEMENT PARTS
1.Use only genuine Yamaha and MBK parts for
all replacements. Use oil and grease recommended by Yamaha or MBK for all lubrication
jobs. Other brands may be similar in function
and appearance, but inferior in quality.
EAS00022
GASKETS, OIL SEALS AND O-RINGS
1.When overhauling the engine, replace all gaskets, seals and O-rings. All gasket surfaces,
oil seal lips and O-rings must be cleaned.
2.During reassembly, properly oil all mating
parts and bearings and lubricate the oil seal
lips with grease.
IMPORTANT INFORMATION
1-4
GEN
INFO
햳
햲
햲
IMPORTANT INFORMATION
햲
햳
햴
햵
EAS00023
LOCK WASHERS / PLATES AND COTTER
PINS
1.After removal, replace all lock washers / plates
햲 and cotter pins. After the bolt or nut has
been tightened to specification, bend the lock
tabs along a flat of the bolt or nut.
EAS00024
BEARINGS AND OIL SEALS
1.Install bearings and oil seals so that the manufacturer’s marks or numbers are visible. When
installing oil seals, lubricate the oil seal lips
with a light coat of lithium soap base grease.
Oil bearings liberally when installing, if appropriate.
햳 Oil seal
EAS00025
CIRCLIPS
1.Before reassembly, check all circlips carefully
and replace damaged or distorted circlips.
Always replace piston pin clips after one use.
When installing a circlip 햲, make sure the
sharp-edged corner 햳 is positioned opposite
the thrust 햴 that the circlip receives.
햵 Shaft
Do not spin the bearing with compressed air
because this will damage the bearing surfaces.
햲 Bearing
CAUTION:
1-5
GEN
INFO
CHECKING THE CONNECTIONS
햲
+
-
+
-
EAS00026
CHECKING THE CONNECTIONS
Check the leads, couplers, and connectors for
stains, rust, moisture, etc.
1.Disconnect:
• lead
• coupler
• connector
2.Check:
• lead
• coupler
• connector
Moisture → Dry with an air blower.
Rust/stains → Connect and disconnect several times.
3.Check:
• all connections
Loose connection → Connect properly.
NOTE:
If the pin 햲 on the terminal is flattened, bend it
up.
4.Connect:
• lead
• coupler
• connector
NOTE:
Make sure all connections are tight.
5.Check:
• continuity
(with the pocket tester)
Pocket tester
90890-03112
NOTE:
• If there is no continuity, clean the terminals.
• When checking the wire harness, perform steps
1 to 3.
• As a quick remedy, use a contact revitalizer
available at most part stores.
1-6
GEN
INFO
SPECIAL TOOLS
EAS00027
SPECIAL TOOLS
The following special tools are necessary for complete and accurate tune-up and assembly. Use
only the appropriate special tools as this will help prevent damage caused by the use of inappropriate
tools or improvised techniques. Special tools, part numbers or both may differ depending on the
country.
When placing an order, refer to the list provided below to avoid any mistakes.
Slide hammer bolt (M6)
Weight
These tools are used to remove or
installing the rocker arms shafts.
Rotor holding tool
This tool is used to remove the flywheel
magneto.
Ring nut wrench 햲
Steering nut wrench 햳
These tools are used to loosen and tighten
the steering ring nuts.
Damper rod holder
T-handle
These tools are used for disassembling
or assembling the front fork.
Piston pin puller
This tool is used to remove the piston pins.
Fuel level gauge
This tool is used to measure the fuel level
in the float chamber.
Clutch spring holder
Clutch spring holder arm
These tools are used for removing the nut
with holding the compression spring.
90890-01083
90890-01084
90890-01235
90890-01268
90890-01403
90890-01294
90890-01326
90890-01304
90890-01312
90890-01337
90890-01464
Tool No. Tool name/usage Illustration
1-7
GEN
INFO
Fork seal driver weight
Frok seal driver attachment
These tools are used when installing the
fork seal.
Sheave holder
This tool is used to hold the secondary
sheave when removing or installing the
nut.
Valve adjusting tool
This tool is necessary for adjusting valve
clearance.
Pocket Tester
This instrument is invaluable for checking
the electrical system.
Engine tachometer
This tool is needed for detecting the
engine rpm.
Timing light
This tool is needed for detecting ignition
timing.
Valve spring compressor
Attachment
These tools are used when removing or
installing the valve and the valve spring.
Valve guide remover
This tool is used to remove the valve
guide.
90890-01367
90890-01368
90890-01701
90890-03111
90890-03112
90890-03113
90890-03141
90890-04019
90890-04108
90890-04116
SPECIAL TOOLS
Tool No. Tool name/usage Illustration
1-8
GEN
INFO
Valve guide installer
This tool is needed to install the valve
guide spring.
Valve guide reamer
This tool is used to rebore the valve guide.
Ignition checker
This instrument is necessary for checking
the ignition system components.
Yamaha bond No. 1215
This sealant (bond) is used for crankcase
mating surface, etc.
Compression gauge
This gauge is used to measure the engine
compression.
90890-04117
90890-04118
90890-06754
90890-85505
90890-03081
Tool No. Tool name/usage Illustration
SPECIAL TOOLS
1-9
2
SPEC
CHAPTER 2.
SPECIFICATIONS
GENERAL SPECIFICATIONS ...................................................................... 2-1
MAINTENANCE SPECIFICATIONS .............................................................2-4
ENGINE ...................................................................................................2-4
CHASSIS .................................................................................................2-8
ELECTRICAL .........................................................................................2-10
CONVERSION TABLE ............................................................................... 2-12
GENERAL TIGHTENING TORQUE SPECIFICATIONS ............................ 2-13
TIGHTENING TORQUES ........................................................................... 2-14
TIGHTENING TORQUES (ENGINE) .....................................................2-14
TIGHTENING TORQUES (CHASSIS) ...................................................2-16
LUBRICATION POINTS AND LUBRICANT TYPES .................................. 2-17
ENGINE .................................................................................................2-17
CHASSIS ...............................................................................................2-18
COOLING SYSTEM DIAGRAMS ............................................................... 2-19
LUBRICATION DIAGRAMS ....................................................................... 2-21
CABLE ROUTING ....................................................................................... 2-23
SPEC
2-1
SPEC
GENERAL SPECIFICATIONS
SPECIFICATIONS
GENERAL SPECIFICATIONS
Dimensions
Overall length
Overall width
Overall height
Seat height
Wheelbase
Minimum ground clearance
Minimum turning radius
Weight
Wet (with oil and a full fuel tank)
Dry (without oil and fuel)
Engine
Engine type
Cylinder arrangement
Displacement
Bore x stroke
Compression ratio
Standard compression pressure (at sea level)
Starting system type
Lubrication system
Oil capacity
Engine oil
Periodic oil change
Total amount
Final gear case oil
Total amount
Coolant system
Radiator capacity (including all routes)
Coolant reservoir capacity
<from low to full level>
Air filter type
Fuel
Recommended fuel
Fuel tank capacity
1.868 mm
740 mm
1.096 mm
777 mm
1.315 mm
105 mm
1.800 mm
123 kg
116 kg
Liquid cooled 4-stroke, SOHC
Forward inclined single cylinder
124 cm
3
[152 cm3]
53.7 x 54.8 mm [59.5 x 54.8 mm]
11: 01
1.400kPa/500r/min (14kgf/cm
2
/500r/min)
Electric starter
Wet sump
API STANDARD:
SE or higher grade
1.2 L
1.4 L
0.15 L
1.1 L
0.35 L
<0.25 L>
Dry element
Regular unleaded gasoline
10 L
Item XN125 [XN150]
Temp.
-20 -10 0 10 20
30
40
10W/30
10W/40
20W/40
20W/50
2-2
SPEC
GENERAL SPECIFICATIONS
Carburator
Type/quantity
Manufacturer
Spark plug
Type
Manufacturer
Spark plug gap
Clutch type
Transmission
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Transmission type
Operation
Chassis
Frame type
Caster angle
Trail
Tyre
Tyre type
Size (front)
Size (rear)
Manufacturer (front)
Manufacturer (rear)
Type (front)
Type (rear)
Tyre pressure (cold)
Maximum load*-except motorcycle
Loading condition A
Front
Rear
Loading condition B
Front
Rear
Front wheel
Wheel type
Rim size
Rear wheel
Wheel type
Rim size
TK 5DS/1 [TK 5KD/1]
TEIKEI
CR8E
NGK
0.5~0.7 mm
Dry, centrifugal automatic
Helical gear
40/15 (2.666)
Spur gear
44/12 (3.666) [42/14 (3)]
V-belt automatic
Centrifugal automatic type
Steel tube backbone
26°
80 mm
Tubeless
120/70-12
120/70-12
METZELER
METZELER
7-TEEN
7-TEEN
187 kg
180 kPa (1.80 kgf/cm
2
)
200 kPa (2.00 kgf/cm
2
)
200 kPa (2.00 kgf/cm
2
)
220 kPa (2.20 kgf/cm
2
)
Cast wheel
12 x MT3.50
Cast wheel
12 x MT3.50
Item XN125 [XN150]
2-3
SPEC
Brake
Front brake type
Front brake operation
Rear brake type
Rear brake operation
Suspension
Front suspension
Rear suspension
Shock absorber
Front fork type
Rear shock absorber assembly type
Wheel travel
Front wheel travel
Rear wheel travel
Electrical
Ignition system type
Charging system type
Battery type
Battery voltage/capacity
Headlight type
Bulbs (voltage/wattage x quantity)
Headlight
Position light
Brake/tail light
Front flasher light
Rear flasher light
Meter light
High beam indicator light
Turn indicator light
Coolant temperature warning light
Amperage for fuses
Main fuse
Radiator fan fuse
Single disc brake
Right hand operation
Drum brake
Left hand operation
Telescopic fork
Unit swing
Coil spring/oil damper
Coil spring/oil damper
90 mm
80 mm
C.D.I
Flywheel magneto
CB7L-B2 or YB7L-B2
12V 8Ah
Bulb
12V 35W/35W x 2
12V 5W x 1
12V 21W/5W x 1
12V 21W x 2
12V 10W x 2
12V 1.2W x 2
12V 1.2W x 1
12V 1.2W x 2
12V 1.2W x 1
20 A
7.5 A
Item XN125 [XN150]
GENERAL SPECIFICATIONS
2-4
SPEC
MAINTENANCE SPECIFICATIONS
ENGINE
Cylinder head
Warp limit
Cylinder
Bore size
Out of round limit
Camshaft
Drive system
Cam dimensions
Intake “A”
“B”
“C”
Exhaust “A”
“B”
“C”
Camshaft runout limit
Cam chain
Cam chain type/No. of links
Rocker arm/rocker armshaft
Rocker arm inside diameter
Rocker shaft outside diameter
Valve,valve seat, valve guide
Valve clearance (cold) IN
EX
Valve dimensions
“A” head diameter IN
EX
“B” face width IN
EX
“C” seat width IN
EX
Stem outside diameter IN
EX
Guide inside diameter IN
EX
Stem-to-guide clearence IN
EX
Stem runout limit
Valve seat width IN
EX
A
C
B
A
B
C
Face width
Seat width
Item Standard Limit
MAINTENANCE SPECIFICATIONS
*[XN150]
••• 0.03 mm
53.700 ~ 53.705 mm [59.500 ~ 59.505mm]* •••
••• 0.05 mm
Chain drive (left) •••
30.811 ~ 30.911 mm 30.711 mm
25.145 ~ 25.245 mm 25.045 mm
5.666 m •••
30.811 ~ 30.911 mm 30.711 mm
25.152 ~ 25.252 mm 25.052 mm
5.659 m •••
••• 0.03 mm
82 RH2005/94 •••
12.000 ~ 12.018 mm 12.030mm
11.981 ~ 11.991 mm 11.950 mm
0.10 ~ 0.14 mm •••
0.16 ~ 0.20 mm •••
26.9 ~ 27.1 mm •••
22.9 ~ 23.1 mm •••
2.687 ~ 3.252 mm •••
2.687 ~ 3.252 mm •••
0.9 ~ 1.1 mm •••
0.9 ~ 1.1 mm 1.6 mm
4.475 ~ 4.490 mm 4.445 mm
4.460 ~ 4.475 mm 4.430 mm
4.500 ~ 4.512 mm 4.542 mm
4.500 ~ 4.512 mm 4.542 mm
0.01 ~ 0.037 mm 0.08 mm
0.025 ~ 0.052 0.10 mm
••• 0.01 mm
0.9 ~ 1.1 mm 1.6 mm
0.9 ~ 1.1 mm 1.6 mm
2-5
SPEC
Valve spring
Inner spring
Free length IN/EX
Set length (valve closed) IN/EX
Compressed pressure IN/EX
Tilt limit IN/EX
Piston
Piston to cylinder
clearence
Piston size “D”
Measuring point “H”
Piston pin bore inside diameter
Piston pin outside diameter
Piston rings
Top ring:
Type
End gap (installed)
Side clearance (installed)
2 nd ring:
Type
End gap (installed)
Side clearence (installed)
Oil ring:
End gap (installed)
Crankshaft
Crank width “A”
Runout limit “C”
Big end side clearance “D”
Automatic centrifugal clutch
Clutch shoe thickness
Clutch housing inside diameter
Weight outside diameter
Clutch-in revolution
Clutch-stall revolution
V-Belt
V-belt width
41.94 mm 39.84 mm
37.5 mm •••
45.1 ~ 50.9 N •••
2.5° / 1.9 mm •••
0.025 ~ 0.035 mm 0.15 mm
53.670 ~ 53.687 mm [59.470 ~ 59.487 mm]* •••
4.5 mm •••
15.002 ~ 15.013 mm 15.045 mm
14.991 ~ 15.000 mm 14.975 mm
Barrel •••
0.15 ~ 0.25 mm 0.50 mm
0.03 ~ 0.07 mm 0.12 mm
Taper •••
0.15 ~ 0.30 mm 0.65 mm
0.02 ~ 0.06 mm 0.12 mm
0.2 ~ 0.7 mm •••
47.950 ~ 48.000 mm •••
••• 0.03 mm
0.15 ~ 0.45 mm •••
2.0 mm 1.0 mm
120 mm [135 mm]*
120.5 [135.5 ]*
20.0 mm 19.5 mm
3,550 ~ 4,050 rpm [3,250 ~ 3,750 rpm]* •••
5,900 ~ 6,900 rpm [5,600 ~ 6,400 rpm]* •••
22 mm 19 mm
Item Standard Limit
H
D
MAINTENANCE SPECIFICATIONS
*[XN150]
2-6
SPEC
Carburetor
Type
I.D mark
Main jet (M.J)
Main air jet (M.A.J)
Jet needle (J.N)
Pilot air jet (P.A.J.1)
Needle jet (N.J)
Pilot jet (P.J)
Pilot screw (P.S)
Valve seat size (V.S)
Starter jet 1 (G.S.1)
Float height (F.L)
Engine idle speed
Oil pump
Type
Tip clearence
Side clearance
Housing and rotor clearence
Radiator
Type
Width/height thickness
Radiator cap opening pressure
Reservoir tank capacity
Thermostatic valve
Manufacturer
Valve opening temperature
Valve full open temperature
TK 5DS [TK 5KD]*
••• •••
#116 [#114]* •••
ø1.0 [ø1.4]* •••
4E31 (3/5) [4E32 (3/5)]* •••
ø1.30 •••
2.590 •••
#38 [#36] •••
2 1/4 ~ 2 3/4 [2 ~ 4]* •••
ø2.00 •••
#0.45 •••
5 ~ 6 mm •••
1.600 ~ 1.800 rpm •••
Trochoid •••
••• 0.15 mm
••• 0.15 mm
••• 0.17 mm
Cooling fin with electric fan •••
170 / 282 / 29 mm •••
90 ~ 110 kPa •••
0.35 L •••
ANGLI •••
82 ±3°C •••
95 ±3°C •••
Item Standard Limit
MAINTENANCE SPECIFICATIONS
*[XN150]
2-7
SPEC
Crankshaft oil seal (left)
Crankshaft oil seal (right)
Crankshaft oil seal (right)
Camshaft bearing (left)
Camshaft bearing (right)
Starter clutch bearing
Primary drive gear bearing (left)
Primary drive gear bearing (right)
Primary drive gear oil seal
Main axle bearing (left)
Main axle bearing (right)
Drive axle bearing (left)
Drive axle bearing (right)
Drive axle oil seal
22 x 32 x 7
19 x 30 x 8 (Reinforced)
19 x 30 x 8 (Double lips)
20 x 42 x 12
15 x 32 x 9
17 x 35 x 10
25 x 52 x 15
17 x 40 x 12
25 x 42 x 6 (Double lips)
15 x 25 x 12 (Needle bearing)
12 x 37 x 12
17 x 47 x 14 (Sphere)
22 x 50 x 14 (Sphere)
32 x 52 x 7
Item Size
MAINTENANCE SPECIFICATIONS
2-8
SPEC
Steering system
Steering bearing type
No./size of steel balls Upper
Lower
Front suspension
Front fork travel
Spring rate (K1)
Stroke (K1)
Oil capacity
Oil grade
Inner tube outer diameter
Optional spring
Rear suspension
Shock absorber travel
Fitting length
Spring rate (K1)
(K2)
Stroke (K1)
(K2)
Front wheel
Type
Rim size
Rim material
Rim runout limit Radial
Lateral
Rear wheel
Type
Rim size
Rim material
Rim runout limit Radial
Lateral
Front disc brake
Type
Disc outside diameter x thickness
Pad thickness
Master cylinder inside diameter
Caliper cylinder outside diameter
Brake fluid type
Rear drum brake
Type
Drum inside diameter
Shoe thickness
Shoe spring free length
MAINTENANCE SPECIFICATIONS
CHASSIS
Item Standard Limit
MAINTENANCE SPECIFICATIONS
Ball bearing •••
15 pcs 4.75 mm •••
15 pcs 4.75 mm •••
90 mm •••
11 N/mm •••
0 ~ 90 mm •••
125 cm
3
•••
SAE20 •••
33 mm •••
No •••
80 mm •••
229 mm •••
18 N/mm •••
53.5 N/mm •••
0 ~ 60 mm •••
60 ~ 80 mm •••
Cast wheel •••
MT 3.50 x 12 •••
Aluminium •••
••• 1 mm
••• 0.5 mm
Cast wheel •••
MT 3.50 x 12 •••
Aluminium •••
••• 1 mm
••• 0.5 mm
Single •••
220 x 4.5 mm •••
4 mm 0.8 mm
11 mm •••
32 mm •••
DOT #3 or DOT #4 •••
Leading, trailing •••
130 mm 130.5 mm
4.0 mm 2.0 mm
54 mm •••
2-9
SPEC
Brake lever
Brake lever free play (front)
Brake lever free play (rear)
Throttle cable free play
Item Standard Limit
MAINTENANCE SPECIFICATIONS
10 ~ 20 mm •••
10 ~ 20 mm •••
1.5 ~ 3.0 mm •••
2-10
SPEC
Ignition timing
Ignition timing (B.T.D.C)
Advanced timing (B.T.D.C)
Advanced type
T.C.I
Pickup coil resistance/color
Source coil resistance/color
Ignition coil
Minimum spark gap
Primary winding resistance
Secondary winding resistance
Spark plug cap
Type
Resistance
Charging system
Type
Normal output
Stator coil resistance/color
Rectifier/regulator
Model/manufacturer
No load regulated voltage
Capacity
Withstand voltage
Battery
Specific gravity
Electric starting system
Type
Starter motor:
Operation voltage
Output
Armature coil resistance
Brush overall length
Brush quantity
Spring force
Commutator diameter
Mica undercut (depth)
Starter relay
Model/manufacturer
Amperage rating
Coil winding resistance
MAINTENANCE SPECIFICATIONS
ELECTRICAL
MAINTENANCE SPECIFICATIONS
Item Standard Limit
10° at 1.700 rpm •••
32° at 5.000 rpm •••
Digital •••
248 ~ 372 Ω at 20°C / •••
white / red-white / blue
720 ~ 1080 Ω at 20°C / •••
green/white
-
brown/black
6 mm •••
0.32 ~ 0.48 Ω at 20°C •••
5.7 ~ 8.5 kΩ at 20°C •••
Resin type •••
10 kΩ •••
Flywheel magneto •••
14 V 10.5 A at 5.000 rpm •••
0.6 ~ 0.9 Ω at 20°C/white
-
white - white
14.5 V •••
25 A •••
200 V •••
1.280 •••
Constant mesh type •••
12 V •••
0.3 kW •••
0.0306 ~ 0.0374 Ω at 20°C •••
10 mm 3.5 mm
2 •••
5.6 ~ 8.3 N •••
22 mm 21 mm
1.5 mm •••
9768054/JIDECO •••
100 A •••
4.2 ~ 4.6 Ω at 20°C •••
2-11
SPEC
Horn
Model/manufacturer
Maximum amperage
Flasher relay
Flasher frequency
Fuel gauge
Model/manufacturer
Sender unit resistance
-
full
-
empty
Circuit breaker
Main
Radiagtor fan fuse
YF-12 / NIKKO •••
3 A •••
80 ~ 160 cycle/min •••
25.33.06/MAXIMA •••
4 ~ 10 Ω •••
90 ~ 100 Ω •••
20 A x 1 pcs •••
7.5 A x 1 pcs •••
MAINTENANCE SPECIFICATIONS
Item Standard Limit
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