engine YAMAHA PW80 2010 Owners Manual

INTRODUCTION
AN IMPORTANT NOTE TO PARENTS:
This motorcycle is not a toy. Before you let your child ride this motorcycle, you should understand the instructions and warn-
ings in this Owner’s Manual. Then be sure your child understands and will follow them. Children differ in skills, physical abil-
ities, and judgment. Some children may not be able to operate a motorcycle safely. Parents should supervise their child’s
use of the motorcycle at all times. Parents should permit continued use only if they determine that the child has the ability to
operate the motorcycle safely.
Your motorcycle was delivered with a removable power reduction plate. Yamaha recommends that all beginners start off with
the power reduction plate installed to limit the engine power available while they learn. Parents should decide when to re-
move the power reduction plate from the motorcycle for more power as their youngster’s riding skills improve. Once the rider
can operate with skill at the top speed permitted by power reduction plate installed, the power reduction plate can be re-
moved.
Motorcycles are single track vehicles. Their safe use and operation are dependent upon the use of proper riding
techniques as well as the expertise of the operator. Every operator should know the following requirements before
riding this motorcycle.
He or she should:


Obtain thorough instructions from a competent source on all aspects of motorcycle operation.

Observe the warnings and maintenance requirements in this Owner’s Manual.

Obtain qualified training in safe and proper riding techniques.

Obtain professional technical service as indicated in this Owner’s Manual and/or when made necessary by mechanical
conditions.

TABLE OF CONTENTS
LOCATION OF IMPORTANT
LABELS
............................................. 1-1
SAFETY INFORMATION
.................. 2-1
DESCRIPTION
.................................. 3-1
Left view .......................................... 3-1
Right view ........................................ 3-2
Controls and instruments ................ 3-3
INSTRUMENT AND CONTROL
FUNCTIONS
....................................... 4-1
Handlebar switch ............................ 4-1
Power reduction plate ..................... 4-1
Shift pedal ...................................... 4-1
Brake lever ..................................... 4-2
Brake pedal .................................... 4-2
Fuel tank cap .................................. 4-2
Fuel ................................................ 4-3
Fuel tank breather hose ................. 4-4
2-stroke engine oil .......................... 4-4
Fuel cock ........................................ 4-5
Starter (choke) lever “ ” ................ 4-6
Kickstarter ...................................... 4-6
Seat ................................................ 4-7
Shock absorber assembly .............. 4-7
Sidestand ....................................... 4-8
FOR YOUR SAFETY –
PRE-OPERATION CHECKS
.............. 5-1
OPERATION AND IMPORTANT
RIDING POINTS
................................. 6-1
Starting and warming up a cold
engine ......................................... 6-1
Starting a warm engine .................. 6-2
Shifting ........................................... 6-2
Engine break-in .............................. 6-3
Parking ........................................... 6-4
PPERIODIC MAINTENANCE AND
ADJUSTMENT
................................... 7-1
Owner’s tool kit ............................... 7-1
Periodic maintenance and
lubrication chart .......................... 7-2
Checking the spark plug ................. 7-5
Removing the power reduction
plate ............................................ 7-6
Transmission oil ............................. 7-7
Cleaning the air filter element ........ 7-8
Cleaning the spark arrester ............ 7-9
Adjusting the carburetor ............... 7-10
Adjusting the engine idling
speed ........................................ 7-10
Adjusting the throttle cable free
play ........................................... 7-11
Tires ............................................. 7-12
Spoke wheels ............................... 7-13
Adjusting the brake lever free
play ........................................... 7-13
Adjusting the brake pedal free
play ........................................... 7-14Checking the front and rear
brake shoes ............................... 7-15
Drive chain slack ........................... 7-16
Cleaning and lubricating the
drive chain ................................. 7-17
Checking and lubricating the
cables ........................................ 7-18
Checking and lubricating the
throttle grip and cable ................ 7-18
Adjusting the Autolube pump ........ 7-18
Checking and lubricating the
brake lever ................................. 7-19
Checking and lubricating the
brake pedal ................................ 7-19
Checking and lubricating the
sidestand ................................... 7-19
Checking the front fork .................. 7-20
Checking the steering ................... 7-20
Checking the wheel bearings ........ 7-21
Supporting the motorcycle ............ 7-21
Front wheel ................................... 7-22
Rear wheel .................................... 7-24
Troubleshooting ............................ 7-26
Troubleshooting chart ................... 7-27
MOTORCYCLE CARE AND
STORAGE
.......................................... 8-1
Matte color caution ......................... 8-1
Care ................................................ 8-1
Storage ........................................... 8-3

2-2
2
3
4
5
6
7
8
9

SAFETY INFORMATION
erator is veering wide on a turn
due to excessive speed or under-
cornering (insufficient lean angle
for the speed). Never travel faster
than warranted by conditions.

Ride cautiously in unfamiliar ar-
eas. You may encounter hidden
obstacles that could cause an ac-
cident.

The posture of the operator is im-
portant for proper control. The op-
erator should keep both hands on
the handlebar and both feet on the
operator footrests during operation
to maintain control of the motorcy-
cle.

Never ride under the influence of
alcohol or other drugs.

Be sure the transmission is in neu-
tral before starting the engine.
Protective apparel
The majority of fatalities from motorcy-
cle accidents are the result of head in-
juries. The use of a safety helmet is the
single most critical factor in the preven-
tion or reduction of head injuries.

Always wear an approved helmet.

Wear a face shield or goggles.
Wind in your unprotected eyes
could contribute to an impairment
of vision that could delay seeing a
hazard.

The use of a jacket, heavy boots,
trousers, gloves, etc., is effective in
preventing or reducing abrasions
or lacerations.

Never wear loose-fitting clothes,
otherwise they could catch on the
control levers, footrests, or wheels
and cause injury or an accident.

Always wear protective clothing
that covers your legs, ankles, and
feet. The engine or exhaust sys-
tem become very hot during or af-
ter operation and can cause burns.
Avoid Carbon Monoxide Poisoning
All engine exhaust contains carbon
monoxide, a deadly gas. Breathing car-
bon monoxide can cause headaches,
dizziness, drowsiness, nausea, confu-
sion, and eventually death.
Carbon Monoxide is a colorless, odor-
less, tasteless gas which may be
present even if you do not see or smellany engine exhaust. Deadly levels of
carbon monoxide can collect rapidly
and you can quickly be overcome and
unable to save yourself. Also, deadly
levels of carbon monoxide can linger
for hours or days in enclosed or poorly
ventilated areas. If you experience any
symptoms of carbon monoxide poison-
ing, leave the area immediately, get
fresh air, and SEEK MEDICAL TREAT-
MENT.

Do not run engine indoors. Even if
you try to ventilate engine exhaust
with fans or open windows and
doors, carbon monoxide can rap-
idly reach dangerous levels.

Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.

Do not run engine outdoors where
engine exhaust can be drawn into
a building through openings such
as windows and doors.
Loading
Adding accessories to your motorcycle
can adversely affect stability and han-

2-4
2
3
4
5
6
7
8
9

SAFETY INFORMATION
bar or the front fork area can
create instability due to improper
weight distribution. If accesso-
ries are added to the handlebar
or front fork area, they must be
as lightweight as possible and
should be kept to a minimum.

Bulky or large accessories may
seriously affect the stability of
the motorcycle. Wind may at-
tempt to lift the motorcycle, or
the motorcycle may become un-
stable in cross winds.

Certain accessories can dis-
place the operator from his or
her normal riding position. This
improper position limits the free-
dom of movement of the opera-
tor and may limit control ability,
therefore, such accessories are
not recommended.

Use caution when adding electri-
cal accessories. If electrical acces-
sories exceed the capacity of the
motorcycle’s electrical system, an
electric failure could result, which
could cause a dangerous loss of
lights or engine power.
Aftermarket Tires and Rims
The tires and rims that came with your
motorcycle were designed to match the
performance capabilities and to provide
the best combination of handling, brak-
ing, and comfort. Other tires, rims, siz-
es, and combinations may not be
appropriate. Refer to page 7-12 for tire
specifications and more information on
replacing your tires.

3-1
1
2
3
4
5
6
7
8
9

DESCRIPTION
EAU10410
Left view
1
23 4 5
6 7

1. Air filter element (page 7-8)
2. Fuel cock (page 4-5)
3. Throttle stop screw (page 7-10)
4. Starter (choke) lever (page 4-6)
5. 2-stroke engine oil tank (page 4-4)
6. Sidestand (page 4-8)
7. Shift pedal (page 4-1)

4-1
2
3
45
6
7
8
9

INSTRUMENT AND CONTROL FUNCTIONS
EAU40660
Handlebar switch
EAU41130
Engine stop switch “ENGINE STOP”
Set this switch to “RUN” before starting
the engine. Set this switch to “OFF” to
stop the engine.
EAU41590
Power reduction plate
Your motorcycle was delivered with a
power reduction plate. Yamaha recom-
mends that all beginning riders start off
with the power reduction plate installed
to limit the amount of power available
while they learn.
Parents should decide when to adjust
the motorcycle for more power as their
youngster’s riding skills improve. Once
the rider can operate with skill at the top
speed with the power reduction plate
installed, the power reduction plate can
be removed. (See page 7-6.)
EAU39850
Shift pedal
This motorcycle is equipped with a con-
stant-mesh 3-speed transmission. The
shift pedal is located on the left side of
the engine. Neutral is at the bottom po-
sition.
1. Engine stop switch “ENGINE STOP”
1

1. Shift pedal
1

INSTRUMENT AND CONTROL FUNCTIONS
4-3
2
3
45
6
7
8
9

EAU13221
Fuel
Make sure there is sufficient gasoline in
the tank.
WARNING

EWA10881
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the
risk of injury when refueling, follow
these instructions.
1. Before refueling, turn off the en-
gine and be sure that no one is sit-
ting on the vehicle. Never refuel
while smoking, or while in the vi-
cinity of sparks, open flames, or
other sources of ignition such as
the pilot lights of water heaters and
clothes dryers.
2. Do not overfill the fuel tank. When
refueling, be sure to insert the
pump nozzle into the fuel tank filler
hole. Stop filling when the fuel
reaches the bottom of the filler
tube. Because fuel expands when
it heats up, heat from the engine or
the sun can cause fuel to spill out
of the fuel tank.3. Wipe up any spilled fuel immedi-
ately.
NOTICE:
Immediately wipe
off spilled fuel with a clean, dry,
soft cloth, since fuel may deteri-
orate painted surfaces or plastic
parts.

[ECA10071]

4. Be sure to securely close the fuel
tank cap.
WARNING

EWA15151
Gasoline is poisonous and can
cause injury or death. Handle gaso-
line with care. Never siphon gaso-
line by mouth. If you should swallow
some gasoline or inhale a lot of gas-
oline vapor, or get some gasoline inyour eyes, see your doctor immedi-
ately. If gasoline spills on your skin,
wash with soap and water. If gaso-
line spills on your clothing, change
your clothes.
EAU41960
NOTICE

ECA15590
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
such as the piston rings as well as to
the exhaust system.
Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
91 or higher. If knocking (or pinging) oc-
1. Fuel tank filler tube
2. Fuel level
2 1

Recommended fuel:
For Europe: REGULAR UNLEADED
GASOLINE ONLY
Except for Europe: UNLEADED
GASOLINE ONLY
Fuel tank capacity:
4.9 L (1.29 US gal, 1.08 Imp.gal)
Fuel reserve amount:
1.0 L (0.26 US gal, 0.22 Imp.gal)

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

INSTRUMENT AND CONTROL FUNCTIONS
4-5
2
3
45
6
7
8
9
tank cap and add the recommend-
ed oil.
3. Install the 2-stroke engine oil tank
cap.
NOTICE

ECA16670
Make sure that the 2-stroke engine
oil tank cap is properly installed.
4. Install the seat.
EAU13561
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
The fuel cock has 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

1. 2-stroke engine oil tank
2. 2-stroke engine oil tank cap
Recommended oil:
See page 9-1.
Oil quantity:
0.75 L (0.79 US qt, 0.66 Imp.qt)
1
2

1. Arrow mark positioned over “OFF”
RES
ONFUEL
OFF
1
1. Arrow mark positioned over “ON”
1. Arrow mark positioned over “RES”
ON
FUEL
RES
OFF
1
ON
OFF
ONFUEL RES
1
RES

INSTRUMENT AND CONTROL FUNCTIONS
4-6
1
2
3
4
5
6
7
8
9
This indicates reserve. If you run out of
fuel while riding, move the lever to this
position. Fill the tank at the first oppor-
tunity. Be sure to set the lever back to
“ON” after refueling!

EAU13590
Starter (choke) lever “”
Starting a cold engine requires a richer
air-fuel mixture, which is supplied by
the starter (choke).
Move the lever in direction (a) to turn on
the starter (choke).
Move the lever in direction (b) to turn off
the starter (choke).
EAU13680
Kickstarter
To start the engine, fold out the kick-
starter lever, move it down lightly with
your foot until the gears engage, and
then push it down smoothly but force-
fully.
1. Starter (choke) lever “”
1
(a)(b)

1. Kickstarter
1