6-1
6
EAU00462
6-PERIODIC MAINTENANCE AND MINOR REPAIR
EAU00464
Safety is an obligation of the owner.
Periodic inspection, adjustment and lu-
brication will keep your vehicle in the
safest and most efficient condition pos-
sible. The most important points of in-
spection, adjustment, and lubrication
are explained on the following pages.
The intervals given in the periodic
maintenance and lubrication chart
should be simply considered as a gen-
eral guide under normal riding condi-
tions. However, DEPENDING ON THE
WEATHER, TERRAIN, GEOGRAPHI-
CAL LOCATION, AND INDIVIDUAL
USE, THE MAINTENANCE INTER-
VALS MAY NEED TO BE SHORT-
ENED.
EW000060
WARNING
_ If you are not familiar with motor-
cycle maintenance work, have a
Yamaha dealer do it for you. _
EAU03758
Owner’s tool kit The owner’s tool kit is located under
the seat. (See page 3-11 for seat re-
moval and installation procedures.)
The service information included in this
manual and the tools provided in the
owner’s tool kit are intended to assist
you in the performance of preventive
maintenance and minor repairs. How-
ever, additional tools such as a torque
wrench may be necessary to perform
certain maintenance work correctly.
NOTE:_ If you do not have the tools or experi-
ence required for a particular job, have
a Yamaha dealer perform it for you. _
EW000063
WARNING
_ Modifications not approved by
Yamaha may cause loss of perfor-
mance and render the vehicle un-
safe for use. Consult a Yamaha
dealer before attempting any chang-
es. _
1. Owner’s tool kit
U5WME0.book Page 1 Monday, July 29, 2002 10:25 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6To install a spark plug
1. Measure the spark plug gap with a
wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.3. Install the spark plug with the
spark plug wrench, and then tight-
en it to the specified torque.
NOTE:_ If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible. _4. Install the spark plug cap.
EAU04605
Engine oil and oil filter
element The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil filter ele-
ment replaced at the intervals specified
in the periodic maintenance and lubri-
cation chart.
To check the engine oil level
1. Place the motorcycle on the cen-
terstand.NOTE:_ Make sure that the motorcycle is posi-
tioned straight up when checking the oil
level. A slight tilt to the side can result in
a false reading. _2. Start the engine, warm it up for
several minutes, and then turn it
off.
a. Spark plug gapSpark plug gap:
0.8–0.9 mm
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf)
U5WME0.book Page 7 Monday, July 29, 2002 10:25 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
66. Remove and replace the oil filter
element and O-ring.7. Install the oil filter element cover
by aligning the projection on the
cover with the slot in the crank-
case, installing the bolt, then tight-
ening it to the specified torque.
NOTE:_ Make sure that the O-ring is properly
seated. _
8. Install the oil filter element drain
screw, and then tighten it to the
specified torque.
9. Install the engine oil drain bolt, and
then tighten it to the specified
torque.
10. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil filler
cap.
1. Oil filter element
2. O-ring (× 2)
1. Projection
2. Slot
Tightening torque:
Oil filter element cover bolt:
15 Nm (1.5 m·kgf)
Tightening torque:
Oil filter element drain screw:
7 Nm (0.7 m·kgf)
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf)
U5WME0.book Page 9 Monday, July 29, 2002 10:25 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
6
EAU03608
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
2. To tighten the drive chain, turn the
adjusting bolt on each side of the
swingarm in direction
a. To loos-
en the drive chain, turn the adjust-
ing bolt on each side of the
swingarm in direction
b, and then
push the rear wheel forward.
NOTE:_ Using the alignment marks on each
side of the swingarm, make sure that
both chain pullers are in the same posi-
tion for proper wheel alignment. _
EC000096
CAUTION:_ Improper drive chain slack will over-
load the engine as well as other vital
parts of the motorcycle and can lead
to chain slippage or breakage. To
prevent this from occurring, keep
the drive chain slack within the
specified limits. _3. Tighten the locknuts, and then
tighten the axle nut to the specified
torque.
EAU03006
Lubricating the drive chain The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.
EC000097
CAUTION:_ The drive chain must be lubricated
after washing the motorcycle or
riding in the rain. _1. Clean the drive chain with kero-
sene and a small soft brush.
ECA00053
CAUTION:_ To prevent damaging the O-rings,
do not clean the drive chain with
steam cleaners, high-pressure
washers or inappropriate solvents. _2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive
chain with a special O-ring chain
lubricant.
1. Locknut
2. Drive chain slack adjusting bolt
3. Axle nut
4. Alignment marks
Tightening torque:
Axle nut:
150 Nm (15.0 m·kgf)
U5WME0.book Page 23 Monday, July 29, 2002 10:25 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-34
6 5. Install the brake hose holders by
installing the bolts.
6. Take the motorcycle off the cen-
terstand so that the front wheel is
on the ground.
7. Tighten the wheel axle, then the
front wheel axle pinch bolt and the
brake caliper bolts to the specified
torques.
8. Connect the speedometer cable.
9. Push down hard on the handlebar
several times to check for proper
fork operation.
EAU04413
Rear wheel To remove the rear wheel
EW000122
WARNING
_
It is advisable to have a Yamaha
dealer service the wheel.
Securely support the motor-
cycle so that there is no danger
of it falling over.
_1. Loosen the axle nut and the brake
caliper bolts.2. Disconnect the brake torque rod
from the brake caliper bracket by
removing the nut and the bolt.
3. Place the motorcycle on the cen-
terstand. Tightening torques:
Wheel axle:
72 Nm (7.2 m·kgf)
Front wheel axle pinch bolt:
20 Nm (2.0 m·kgf)
Brake caliper bolt:
40 Nm (4.0 m·kgf)1. Locknut
2. Drive chain slack adjusting bolt
3. Axle nut
1. Bolt
2. Brake torque rod
3. Nut/bolt
4. Brake caliper bracket
5. Brake caliper
6. Bolt (× 2)
U5WME0.book Page 34 Monday, July 29, 2002 10:25 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-35
64. Remove the axle nut and the
brake caliper by removing the
bolts.
ECA00082
CAUTION:_ Do not apply the brake after the
brake caliper has been removed,
otherwise the brake pads will be
forced shut. _5. Loosen the locknuts, and then turn
the drive chain slack adjusting bolt
on each side of the swingarm fully
in direction
a.6. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
NOTE:_ The drive chain does not need to be
disassembled in order to remove and
install the rear wheel. _7. While supporting the wheel and
the brake caliper bracket, pull the
wheel axle out.
8. Remove the brake caliper bracket
and the wheel.
EAU03895
To install the rear wheel
1. Place the wheel and the brake cal-
iper bracket in the original position.
2. Insert the wheel axle through the
brake caliper bracket and wheel
from the right-hand side, and then
install the axle nut.
3. Install the drive chain onto the rear
sprocket, and then adjust the drive
chain slack. (See page 6-23 for
drive chain slack adjustment pro-
cedures.)
4. Connect the brake torque rod to
the brake caliper bracket by in-
stalling the bolt and the nut.
5. Install the brake caliper by install-
ing the bolts.NOTE:_ Make sure that there is enough space
between the brake pads before install-
ing the brake caliper onto the brake
disc. _6. Take the motorcycle off the cen-
terstand so that the rear wheel is
on the ground.
1. Wheel axle
2. Drive chain slack adjusting bolt
3. LocknutU5WME0.book Page 35 Monday, July 29, 2002 10:25 AM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-36
6 7. Tighten the axle nut, brake caliper
bolts and brake torque rod nut to
the specified torques.
EAU01008
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills. Tightening torques:
Axle nut:
150 Nm (15.0 m·kgf)
Brake caliper bolt:
40 Nm (4.0 m·kgf)
Brake torque rod nut:
23 Nm (2.3 m·kgf)
U5WME0.book Page 36 Monday, July 29, 2002 10:25 AM
SPECIFICATIONS
8-5
8
EAU04513
Conversion table CS-04EAll specification data in this manual are listed in SI and
METRIC UNITS.
Use this table to convert METRIC unit values to IMPERIAL
unit values.
Example:METRIC VALUE CONVERSION
FACTORIMPERIAL VALUE
2 mm× 0.03937 = 0.08 in
Conversion table
METRIC SYSTEM TO IMPERIAL SYSTEM
Metric unit Conversion factor Imperial unit
Torquem·kgf
m·kgf
cm·kgf
cm·kgf
× 7.233× 86.794× 0.0723× 0.8679ft·lbf
in·lbf
ft·lbf
in·lbf
Weightkg
g× 2.205× 0.03527lb
oz
Speed km/h× 0.6214 mi/h
Distancekm
m
m
cm
mm× 0.6214× 3.281× 1.094× 0.3937× 0.03937mi
ft
yd
in
in
Volume,
Capacitycc (cm
3)
cc (cm3)
L (liter)
L (liter)
× 0.03527× 0.06102× 0.8799× 0.2199oz (IMP liq.)
cu·in
qt (IMP liq.)
gal (IMP liq.)
Miscellaneouskg/mm
kgf/cm
2
°
C
× 55.997× 14.2234× 1.8 + 32 lb/in
psi (lbf/in
2)
°
F
U5WME0.book Page 5 Monday, July 29, 2002 10:25 AM