Page 24 of 72
INSTRUMENT AND CONTROL FUNCTIONS
4-2
1
2
3
4
5
6
7
8
9
EAU12890
Brake lever
The brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the handle-
bar grip.
EAU12941
Brake pedal
The brake pedal is on the right side of
the motorcycle. To apply the rear
brake, press down on the brake pedal.
EAU13182
Fuel tank cap
To remove the fuel tank cap, turn it
counterclockwise, and then pull it off.
To install the fuel tank cap, insert it into
the tank opening, and then turn it clock-
wise.
WARNING
EWA11091
Make sure that the fuel tank cap is
properly closed after filling fuel.
Leaking fuel is a fire hazard.
1. Brake lever
1
1. Brake pedal
1
1. Fuel tank cap
1
Page 26 of 72

INSTRUMENT AND CONTROL FUNCTIONS
4-4
1
2
3
4
5
6
7
8
9
curs, use a gasoline of a different brand
or premium unleaded fuel. Use of un-
leaded fuel will extend spark plug life
and reduce maintenance costs.
EAU13412
Fuel tank breather hose
Before operating the motorcycle:
Check the fuel tank breather hose
connection.
Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.
Make sure that the fuel tank
breather hose is not blocked, and
clean it if necessary.
EAU41202
2-stroke engine oil
Make sure that there is sufficient oil in
the 2-stroke engine oil tank. If the
2-stroke engine oil is at or below the
minimum level as shown in the illustra-
tion, add a sufficient amount of the rec-
ommended 2-stroke engine oil as
follows.
TIP
Make sure that the motorcycle is posi-
tioned straight up when checking the
2-stroke engine oil level. A slight tilt to
the side can result in a false reading.
1. Remove the seat. (See page 4-7.)
2. Remove the 2-stroke engine oil
1. Fuel tank breather hose
1
1. Minimum level
1
Page 47 of 72
PERIODIC MAINTENANCE AND ADJUSTMENT
7-11
2
3
4
5
6
78
9
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 throttlecable free play, turn the adjusting
nut in direction (b).
3. Tighten the locknut.
1. Throttle stop screw
Engine idling speed:
1650–1750 r/min
1
(a) (b)
1. Throttle cable free play1
1. Locknut
2. Adjusting nut
1
2
(a)
(b)
Page 49 of 72

PERIODIC MAINTENANCE AND ADJUSTMENT
7-13
2
3
4
5
6
78
9 sively worn tires decreases
riding stability and can lead to
loss of control.
The replacement of all
wheel-and brake-related parts,
including the tires, should be
left to a Yamaha dealer, who has
the necessary professional
knowledge and experience.
It is not recommended to patch
a punctured tube. If unavoid-
able, however, patch the tube
very carefully and replace it as
soon as possible with a
high-quality product.
EAU21940
Spoke wheels
To maximize the performance, durabil-
ity, and safe operation of your motorcy-
cle, note the following points regarding
the specified wheels.
The wheel rims should be checked
for cracks, bends or warpage, and
the spokes for looseness or dam-
age before each ride. If any dam-
age is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed or cracked
wheel must be replaced.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced. An
unbalanced wheel can result in
poor performance, adverse han-
dling characteristics, and a short-
ened tire life.
Ride at moderate speeds after
changing a tire since the tire sur-
face must first be “broken in” for it
to develop its optimal characteris-
tics.
EAU22120
Adjusting the brake lever free
play
The brake lever free play should mea-
sure 10.0–20.0 mm (0.39–0.79 in) as
shown. Periodically check the brake le-
ver free play and, if necessary, adjust it
as follows.
1. Loosen the locknut at the brake le-
ver.
2. To increase the brake lever free
play, turn the adjusting bolt in di-
rection (a). To decrease the brake
lever free play, turn the adjusting
bolt in direction (b).
1. Brake lever free play
2. Locknut
3. Adjusting bolt
1
2
3
(a)
(b)
Page 50 of 72

PERIODIC MAINTENANCE AND ADJUSTMENT
7-14
1
2
3
4
5
6
7
8
9
3. If the specified brake lever free
play could be obtained as de-
scribed above, tighten the locknut
and skip the rest of the procedure,
otherwise proceed as follows.
4. Fully turn the adjusting bolt at the
brake lever in direction (a) to loos-
en the brake cable.
5. Loosen the locknut at the brake
shoe plate.
6. To increase the brake lever free
play, turn the adjusting nut in direc-
tion (a). To decrease the brake le-
ver free play, turn the adjusting nut
in direction (b).
7. Tighten the locknut at the brakeshoe plate and at the brake lever.
EAU39812
Adjusting the brake pedal free
play
The brake pedal free play should mea-
sure 10.0–20.0 mm (0.39–0.79 in) at
the brake pedal end as shown. Period-
ically check the brake pedal free play
and, if necessary, adjust it as follows.
To increase the brake pedal free play,
turn the adjusting nut at the brake rod in
direction (a). To decrease the brake
pedal free play, turn the adjusting nut in
direction (b).
1. Locknut
2. Adjusting nut
12
(a)
(b)
1. Brake pedal free play
1
Page 52 of 72

PERIODIC MAINTENANCE AND ADJUSTMENT
7-16
1
2
3
4
5
6
7
8
9
EAU22760
Drive chain slack
The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22773
To check the drive chain slack
1. Place the motorcycle on the side-
stand.
TIP
When checking and adjusting the drive
chain slack, there should be no weight
on the motorcycle.
2. Shift the transmission into the neu-
tral position.
3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain slack
as shown.4. If the drive chain slack is incorrect,
adjust it as follows.
EAU40111
To adjust the drive chain slack
1. Loosen the brake pedal free play
adjusting nut, axle nut, and locknut
at each end of the swingarm.2. To tighten the drive chain, turn the
drive chain slack adjusting nut at
each end of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting nut at each end
of the swingarm in direction (b),
and then push the rear wheel for-
ward.
NOTICE:
Improper drive
chain slack will overload the en-
gine 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 with-
Drive chain slack:
40.0–53.0 mm (1.57–2.09 in)
1. Drive chain slack
1
1. Brake pedal free play adjusting nut
2. Locknut
3. Drive chain slack adjusting nut
4. Wheel axle
2
14 3
Page 53 of 72
![YAMAHA PW80 2010 Owners Manual
PERIODIC MAINTENANCE AND ADJUSTMENT
7-17
2
3
4
5
6
78
9 in the specified limits.
[ECA10571]
TIP
Using the alignment marks on each
side of the swingarm, make sure that
both adjusting nuts ar YAMAHA PW80 2010 Owners Manual
PERIODIC MAINTENANCE AND ADJUSTMENT
7-17
2
3
4
5
6
78
9 in the specified limits.
[ECA10571]
TIP
Using the alignment marks on each
side of the swingarm, make sure that
both adjusting nuts ar](/manual-img/51/51154/w960_51154-52.png)
PERIODIC MAINTENANCE AND ADJUSTMENT
7-17
2
3
4
5
6
78
9 in the specified limits.
[ECA10571]
TIP
Using the alignment marks on each
side of the swingarm, make sure that
both adjusting nuts are in the same po-
sition for proper wheel alignment.
3. Tighten both locknuts and the axle
nut to the specified torques.4. Adjust the brake pedal free play.
(See page 7-14.)
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.
1. Alignment marks
2. Drive chain slack adjusting nut
3. Locknut
4. Washer
5. Axle nut
5
42
1
(a)
(b)3
Tightening torques:
Locknut:
6.5 Nm (0.7 m·kgf, 4.7 ft·lbf)
Axle nut:
60 Nm (6.0 m·kgf, 43.4 ft·lbf)
Page 58 of 72
PERIODIC MAINTENANCE AND ADJUSTMENT
7-22
1
2
3
4
5
6
7
8
9
frame in front of the rear wheel or under
each side of the swingarm.
EAU24360
Front wheel
EAU41532
To remove the front wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.
1. Remove the brake cable holder by
removing the bolt.
2. Loosen the brake cable locknut at
the front wheel hub, and then turn
the brake cable free play adjusting
bolt fully in direction (a).3. Loosen the locknut at the brake le-
ver, and then turn the adjusting
bolt fully in direction (a).
1. Brake cable holder
2. Bolt
2
1
1. Adjusting nut
2. Locknut
3. Washer
4. Axle nut
5. Brake camshaft lever
4
5
3
1
2