2015 YAMAHA PW50 service

INTRODUCTIONAN 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 is equipped with an adjustable speed limiter and a power reduction plate. Yamaha recommends that all
beginners start off with the speed limiter adjusting screw turned in and the power reduction plate installed in the exhaust
manifold to limit the power available while they learn. The limiter screw may be gradually turned out to increase maximum
speed as the beginner becomes more familiar with operating the motorcycle. 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
permitted by adjusting the speed limiter alone, the power reduction plate can be removed. Since removal of this plate will
result in a significant increase in power, turn the speed limiter back in again; adjust it out in stages as you did before.
Motorcycles are sin gle track vehicles. Their safe use an d operation are d ependent upon the use of proper ri din g
techniques as well as the expertise of the operator. Every operator shoul d know the followin g requirements b efore
ri din g 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
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-1
7
EAU17245
Periodic inspection, adjustment, and
lubrication will keep your vehicle in the
safest and most efficient condition
possible. Safety is an obligation of the
vehicle owner/operator. The most im-
portant points of vehicle inspection,
adjustment, and lubrication are ex-
plained on the following pages.
The intervals given in the periodic
maintenance charts should be simply
considered as a general guide under
normal riding conditions. However, de-
pending on the weather, terrain, geo-
graphical location, and individual use,
the maintenance intervals may need to
be shortened.
WARNING
EWA10322
Failure to properly maintain the vehi-
cle or performing maintenance ac-
tivities incorrectly may increase
your risk of injury or death durin g
service or while usin g the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha d ealer perform
service.
WARNING
EWA15123
Turn off the en gine when performin g
maintenance unless otherwise
specified .
 A runnin g en gine has movin g
parts that can catch on body
parts or clothin g an d electrical
parts that can cause shocks or
fires.
 Runnin g the en gine while ser-
vicin g can lead to eye injury,
b urns, fire, or car bon monoxi de
poisonin g – possi bly lea din g to
d eath. See pag e 2-2 for more in-
formation a bout car bon monox-
i d e.
WARNING
EWA15461
Brake discs, calipers, drums, and
linin gs can b ecome very hot d uring
use. To avoi d possi ble burns, let
b rake components cool before
touchin g them.
EAU17303
Emission controls not only function to
ensure cleaner air, but are also vital to
proper engine operation and maximum
performance. In the following periodic
maintenance charts, the services relat-
ed to emissions control are grouped
separately. These services require
specialized data, knowledge, and
equipment. Maintenance, replace-
ment, or repair of the emission control
devices and systems may be per-
formed by any repair establishment or
individual that is certified (if applicable).
Yamaha dealers are trained and equipped to perform these particular
services.
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PERIODIC MAINTENANCE AND ADJUSTMENT
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7
EAU17312
Owner’s tool kitThe 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.TIPIf you do not have the tools or experi-
ence required for a particular job, have
a Yamaha dealer perform it for you.
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-5
7
TIPThe air filter needs more frequent service if you are riding in unusually wet or dusty areas.10
*Transmission oil
Check for oil leakage .Correct if necessary.Change.
11
*Front and rear brake
lever pivot
Apply lithium-soap-based grease lightly.
12
*
Centerstand pivot
Check operation.Apply lithium-soap-based grease lightly.
13
*Shock absorber
assemblies
Check operation and for oil leakage.Replace if necessary.
14
*
Control cables
Apply Yamaha cable lubricant or other suitable
cable lubricant.
15
*Throttle grip
Check operation.Check throttle grip free play, and adjust if
necessary.Apply Yamaha cable lubricant or other suitable
cable lubricant.
NO. ITEM CHECK OR MAINTENANCE JOB
INITIAL
THEREAFTER
EVERY
1
month 3
months 6
months 6
months 12
months
8* Chassis fastenersCorrect if necessary.
A
9* utolube pumpCheck operation.Correct if necessary. Check all chassis fitting and fasteners.
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PERIODIC MAINTENANCE AND ADJUSTMENT
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7
EAU39931
Adjustin g the car buretorThe carburetor is an important part of
the engine and requires very sophisti-
cated adjustment. Therefore, most
carburetor adjustments should be left
to a Yamaha dealer, who has the nec-
essary professional knowledge and ex-
perience. The adjustment described in
the following section, however, may be
serviced by the owner as part of rou-
tine maintenance.NOTICE
ECA10551
The car buretor has been set an d ex-
tensively teste d at the Yamaha fac-
tory. Chang ing these settin gs
without sufficient technical knowl-
e dge may result in poor perfor-
mance of or d amage to the en gine.
EAU21363
A djustin g the eng ine idlin g
spee dThe engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.TIPA diagnostic tachometer is needed to
make this adjustment.1. Attach the tachometer to the
spark plug lead.
2. Start the engine and warm it up for several minutes at 1000–2000
r/min while occasionally revving it
to 4000–5000 r/min.TIPThe engine is warm when it quickly re-
sponds to the throttle.3. Check the engine idling speedand, if necessary, adjust it to
specification by turning the throt-
tle stop screw. To increase the en-
gine idling speed, turn the screw in direction (a). To decrease the en-
gine idling speed, turn the screw in
direction (b).
TIPIf the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.1. Throttle stop screwEn gine i dlin g spee d:
1650–1750 r/min
1 (a)
(b)
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-23
713. Adjust the brake lever free play.
(See page 7-14.)
14. Install the seat.
EAU25852
Trou bleshootin gAlthough Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during 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.
WARNING
EWA15142
When checkin g the fuel system, do
not smoke, an d make sure there are
no open flames or sparks in the ar-
ea, inclu din g pilot lig hts from water heaters or furnaces. Gasoline or
g
asoline vapors can i gnite or ex-
plod e, causin g severe injury or prop-
erty damag e.
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