2009 YAMAHA PW80 check engine

PERIODIC MAINTENANCE AND ADJUSTMENT
6-8
2
3
4
5
67
8
9
NOTICE

ECA10452

In order to prevent clutch slip-
page (since the transmission oil
also lubricates the clutch), do
not mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.

Make sure that no foreign mate-
rial enters the transmission.
5. Start the engine, and then let it idle
for several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cause.
EAU41162
Cleaning the air filter element
The air filter element should be cleaned
at the intervals specified in the periodic
maintenance and lubrication chart.
Clean the air filter element more fre-
quently if you are riding in unusually
wet or dusty areas.
1. Remove the air filter case cover by
removing the screws.
2. Pull the air filter element out.3. Remove the sponge material from
the air filter case cover, clean it
with solvent, and then squeeze the
remaining solvent out.
Recommended transmission oil:
See page 8-1.
Oil change quantity:
0.65 L (0.69 US qt, 0.57 Imp.qt)
1. Air filter case cover
2. Screw
2
2
1

1. Sponge material
2. Air filter case cover
1
2

PERIODIC MAINTENANCE AND ADJUSTMENT
6-11
1
2
3
4
5
6
7
8
9

EAU21340
Adjusting the engine idling
speed
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
The engine should be warm before
making this adjustment.
TIP


The engine is warm when it quickly
responds to the throttle.

A diagnostic tachometer is needed
to make this adjustment.
1. Attach the tachometer to the spark
plug lead.
2. Check the engine idling speed
and, if necessary, adjust it to spec-
ification by turning the throttle stop
screw. To increase the engine
idling speed, turn the screw in di-
rection (a). To decrease the en-
gine idling speed, turn the screw in
direction (b).
TIP

If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
EAU21370
Adjusting the throttle cable
free play
The throttle cable free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, adjust it as follows.
TIP

The engine idling speed must be cor-
rectly adjusted before checking and ad-
justing the throttle cable free play.
1. Loosen the locknut.
2. To increase the throttle cable free
play, turn the adjusting nut in direc-
tion (a). To decrease the throttle
1. Throttle stop screw
Engine idling speed:
1650–1750 r/min
1
(a) (b)

1. Throttle cable free play
1

PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
2
3
4
5
67
8
9

EAU23013
Cleaning and 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.
NOTICE

ECA10581
The drive chain must be lubricated
after washing the motorcycle and
riding in the rain.
1. Remove all dirt and mud from the
drive chain with a brush or cloth.
TIP

For a thorough cleaning, have a
Yamaha dealer remove the drive chain
and soak it in solvent.
2. Spray Yamaha Chain and Cable
Lube or a high-quality spray-type
drive chain lubricant on both sides
and on the middle of the chain,
making sure that all side plates and
rollers have been sufficiently oiled.
EAU41842
Checking and lubricating the
cables
The operation of all control cables and
the condition of the cables should be
checked before each ride, and the ca-
bles and cable ends should be lubricat-
ed if necessary. If a cable is damaged
or does not move smoothly, have a
Yamaha dealer check or replace it.
WARNING! Damage to the outer
housing of cables may result in in-
ternal rusting and cause interfer-
ence with cable movement. Replace
damaged cables as soon as possi-
ble to prevent unsafe condi-
tions.
[EWA10711]

EAU23111
Checking and lubricating the
throttle grip and cable
The operation of the throttle grip should
be checked before each ride. In addi-
tion, the cable should be lubricated at
the intervals specified in the periodic
maintenance chart.
Recommended lubricant:
Yamaha Chain and Cable Lube or
4-stroke engine oil

PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
1
2
3
4
5
6
7
8
9

EAU23120
Adjusting the Autolube pump
The Autolube pump is a vital and so-
phisticated component of the engine,
which must be adjusted by a Yamaha
dealer at the intervals specified in the
periodic maintenance and lubrication
chart.
EAU44271
Checking and lubricating the
brake and shift pedals
The operation of the brake and shift
pedals should be checked before each
ride, and the pedal pivots should be lu-
bricated if necessary.
Recommended lubricant:
Lithium-soap-based grease

PERIODIC MAINTENANCE AND ADJUSTMENT
6-21
1
2
3
4
5
6
7
8
9
NOTICE

ECA10590
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU23282
Checking the steering
Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Place a stand under the engine to
raise the front wheel off the
ground. (See page 6-1 for more in-
formation.)
WARNING! To avoid
injury, securely support the ve-
hicle so there is no danger of it
falling over.
[EWA10751]

2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.

PERIODIC MAINTENANCE AND ADJUSTMENT
6-22
2
3
4
5
67
8
9

EAU23290
Checking the wheel bearings
The front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion chart. If there is play in the wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer check
the wheel bearings.
EAU24350
Supporting the motorcycle
Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other maintenance
requiring the motorcycle to stand up-
right. Check that the motorcycle is in a
stable and level position before starting
any maintenance. A strong wooden
box can be placed under the engine for
added stability.
To service the front wheel
1. Stabilize the rear of the motorcycle
by using a motorcycle stand or, if
an additional motorcycle stand is
not available, by placing a jack un-
der the frame in front of the rear
wheel.
2. Raise the front wheel off the
ground by using a motorcycle
stand.
To service the rear wheel
Raise the rear wheel off the ground by
using a motorcycle stand or, if a motor-
cycle stand is not available, by placing
a jack either under each side of theframe in front of the rear wheel or under
each side of the swingarm.

PERIODIC MAINTENANCE AND ADJUSTMENT
6-28
2
3
4
5
67
8
9

EAU25972
Troubleshooting chart
Check the fuel level in
the fuel tank.1. Fuel
There is
enough fuel.
There is
no fuel.
Supply fuel.
Operate the kickstarter.2. Compression
There is compression.
There is
no compression.Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check the electrodes.3. Ignition
Wet
DryWipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.The engine does not start.
Have a Yamaha dealer check the vehicle.
Open the throttle halfway and operate
the kickstarter.
Check the compression.
The engine does not start.
Check the compression.

INDEX
A
Air filter element, cleaning .........................6-8
Autolube pump, adjusting ........................6-19
B
Brake and shift pedals, checking and
lubricating ..............................................6-19
Brake lever ................................................3-2
Brake lever, checking and lubricating ......6-20
Brake lever free play, adjusting ...............6-14
Brake pedal ...............................................3-2
Brake pedal free play, adjusting ..............6-15
Brake shoes, checking ............................6-15
C
Cables, checking and lubricating .............6-18
Carburetor, adjusting ...............................6-10
Care ...........................................................7-1
D
Drive chain, cleaning and lubricating .......6-18
Drive chain slack .....................................6-16
E
Engine break-in .........................................5-3
Engine idling speed .................................6-11
Engine oil ...................................................3-4
Engine, starting a warm .............................5-2
Engine stop switch.....................................3-1
F
Front fork, checking .................................6-20
Fuel ............................................................3-3
Fuel cock ...................................................3-5
Fuel tank breather hose.............................3-4
Fuel tank cap .............................................3-2
H
Handlebar switch .......................................3-1
I
Identification numbers ............................... 9-1
K
Kickstarter ................................................. 3-6
M
Matte color, caution ................................... 7-1
Model label ................................................ 9-1
P
Parking ...................................................... 5-4
Part locations............................................. 2-1
Periodic maintenance and lubrication
chart ........................................................ 6-2
Power reduction plate................................ 3-1
Power reduction plate, removing ............... 6-6
Pre-operation check list ............................. 4-2
S
Safety information ..................................... 1-1
Seat ........................................................... 3-7
Shifting ...................................................... 5-2
Shift pedal ................................................. 3-1
Shock absorber assembly ......................... 3-7
Sidestand, checking and lubricating ........ 6-20
Spark arrester, cleaning ............................ 6-9
Spark plug, checking ................................. 6-5
Specifications ............................................ 8-1
Starter (choke) lever .................................. 3-6
Starting and warming up a cold engine ..... 5-1
Steering, checking ................................... 6-21
Storage ...................................................... 7-3
Supporting the motorcycle....................... 6-22
T
Throttle cable free play, adjusting ........... 6-11
Throttle grip and cable, checking and
lubricating .............................................. 6-18Tires ........................................................ 6-12
Tool kit....................................................... 6-1
Transmission oil ........................................ 6-7
Troubleshooting ...................................... 6-27
Troubleshooting chart ............................. 6-28
V
Vehicle identification number .................... 9-1
W
Wheel bearings, checking ....................... 6-22
Wheel (front) ........................................... 6-23
Wheel (rear) ............................................ 6-25
Wheels .................................................... 6-13