2010 YAMAHA PW50 ECU

2-3
2
3
4
5
6
7
8
9

SAFETY INFORMATION
possibility of an accident, use extreme
caution when adding accessories to
your motorcycle. Use extra care when
riding a motorcycle that has added ac-
cessories. Here are some general
guidelines to follow if adding accesso-
ries to your motorcycle:
Operation of an overloaded vehicle
could cause an accident.

The weight of the operator must
not exceed 25 kg (55 lb).

Accessory weight should be kept
as low and close to the motorcycle
as possible. Securely pack your
heaviest items as close to the cen-
ter of the vehicle as possible and
make sure to distribute the weight
as evenly as possible on both
sides of the motorcycle to mini-
mize imbalance or instability.

Shifting weights can create a sud-
den imbalance. Make sure that ac-
cessories are securely attached to
the motorcycle before riding.
Check accessory mounts fre-
quently.

Properly adjust the suspensionfor your load, and check the con-
dition and pressure of your tires.

Never attach any large or heavy
items to the handlebar, front
fork, or front fender.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avail-
able only from a Yamaha dealer, have
been designed, tested, and approved
by Yamaha for use on your vehicle.
Many companies with no connection to
Yamaha manufacture parts and acces-
sories or offer other modifications for
Yamaha vehicles. Yamaha is not in a
position to test the products that these
aftermarket companies produce.
Therefore, Yamaha can neither en-
dorse nor recommend the use of ac-
cessories not sold by Yamaha or
modifications not specifically recom-
mended by Yamaha, even if sold and
installed by a Yamaha dealer.
Aftermarket Parts, Accessories,
and Modifications
While you may find aftermarket prod-
ucts similar in design and quality to
genuine Yamaha accessories, recog-
nize that some aftermarket accessories
or modifications are not suitable be-
cause of potential safety hazards to you
or others. Installing aftermarket prod-
ucts or having other modifications per-
formed to your vehicle that change any
of the vehicle’s design or operation
characteristics can put you and others
at greater risk of serious injury or death.
You are responsible for injuries related
to changes in the vehicle.
Keep the following guidelines in mind,
as well as those provided under “Load-
ing” when mounting accessories.


Never install accessories that
would impair the performance of
your motorcycle. Carefully inspect
the accessory before using it to
make sure that it does not in any
way reduce ground clearance or
cornering clearance, limit suspen-
sion travel, steering travel or con-
trol operation.

INSTRUMENT AND CONTROL FUNCTIONS
4-4
2
3
45
6
7
8
9
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.
EAU41981
For Canada
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 pump octane number
[(R+M)/2] of 86 or higher, or a research
octane number of 91 or higher. If
knocking (or pinging) occurs, use agasoline of a different brand or premi-
um unleaded fuel. Use of unleaded fuel
will extend spark plug life and reduce
maintenance cost.
Gasohol
There are two types of gasohol: gaso-
hol containing ethanol and that contain-
ing methanol. Gasohol containing
ethanol can be used if ethanol content
does not exceed 10% (E10). Gasohol
containing methanol is not recom-
mended by Yamaha because it can
cause damage to the fuel system or ve-
hicle performance problems.
Except for Canada
NOTICE

ECA15590
Use only unleaded gasoline. The use
of leaded gasoline will cause severe
damage to internal engine parts,
1. Fuel tank filler tube
2. Fuel level
2 1

Recommended fuel:
REGULAR UNLEADED GASOLINE
ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)
Recommended fuel:
For Europe: REGULAR UNLEADED
GASOLINE ONLY
Except for Canada and Europe: UN-
LEADED GASOLINE ONLY
Fuel tank capacity:
2.0 L (0.53 US gal, 0.44 Imp.gal)

PERIODIC MAINTENANCE AND ADJUSTMENT
7-17
2
3
4
5
6
78
9

EAU42081
Checking the front fork
The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
Check the inner tubes for scratches
and damage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
WARNING! To avoid injury,
securely support the vehicle so
there is no danger of it falling
over.

[EWA10751]

2. While applying the front brake,
push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
NOTICE

ECA10590
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU45511
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 the vehicle on the center-
stand.
WARNING! To avoid inju-
ry, securely support the vehicle
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
7-18
1
2
3
4
5
6
7
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.
EAU24360
Front wheel
EAU41022
To remove the front wheel
WARNING

EWA10821
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.
1. Place the motorcycle on the cen-
terstand.
2. Disconnect the brake cable at the
wheel by removing the brake lever
free play adjusting nut, then re-
moving the cable from the brake
camshaft lever and brake shoe
plate.3. Remove the axle nut and washer.
4. Pull the wheel axle out, and then
remove the wheel.
1. Brake lever free play adjusting nut
2. Brake camshaft lever
3. Washer
4. Axle nut
5. Brake cable
5
1 23
4

PERIODIC MAINTENANCE AND ADJUSTMENT
7-20
1
2
3
4
5
6
7
8
9

EAU25080
Rear wheel
EAU41083
To remove the rear wheel
WARNING

EWA10821
To avoid injury, securely support the
vehicle so there is no danger of it
falling over.
1. Place the motorcycle on the cen-
terstand.
2. Remove the seat. (See page 4-7.)
3. Remove the muffler bolt and
washers.
WARNING! Always let
the exhaust system cool prior to
touching exhaust compo-
nents.
[EWA14581]

4. Slide the spring clamp down, and
then remove the muffler.5. Remove the exhaust chamber bolt
and washers.6. Remove the exhaust manifold
bolts, and then remove the ex-
haust chamber.
1. Muffler
2. Washer
3. Muffler bolt
4. Spring clamp
3
1
24

1. Exhaust chamber
2. Exhaust chamber bolt
3. Washer
2 1
3