2013 YAMAHA PW50 engine

OPERATION AND IMPORTANT RIDING POINTS
6-3
6Rear
EAU42030
Engine break-in There is never a more important period
in the life of your engine than the first 5
hours of riding. It is also important to ac-
custom the rider to the motorcycle dur-
ing this time. Please read the following
information carefully.
Since the engine is brand new, do not
put an excessive load on it for the first 5
hours of operation. The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that might
result in engine overheating must be
avoided. However, momentary full-
throttle operation under load (i.e., two
to three seconds maximum) does not
harm the engine. Each full-throttle ac-
celeration should be followed with a
substantial rest period for the engine.
To allow the engine to cool down from
the temporary buildup of heat, cruise at
a lower engine speed.
After the first 5 hours of operation, thor-
oughly check the motorcycle for loose
parts, oil leakage and any other prob-
lems. Be sure to inspect and make ad- justments thoroughly, especially
cables. In addition, check all fittings and
fasteners for looseness, and tighten if
necessary.
NOTICE
ECA10270
If any engine trouble should occur
during the engine break-in period,
immediately have a Yamaha dealer
check the vehicle.
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OPERATION AND IMPORTANT RIDING POINTS
6-4
6
EAU40722
Parking When parking, stop the engine, and
then turn the fuel cock lever to “S”
(stop).
WARNING
EWA10311
●
Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them and be burned.
●
Do not park on a slope or on soft
ground, otherwise the vehicle
may overturn, increasing the
risk of a fuel leak and fire.
●
Do not park near grass or other
flammable materials which
might catch fire.
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-1
7
EAU17244
Periodic inspection, adjustment, and lu-
brication will keep your vehicle in the
safest and most efficient condition pos-
sible. Safety is an obligation of the vehi-
cle owner/operator. The most important
points of vehicle inspection, adjust-
ment, and lubrication are explained 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
EWA10321
Failure to properly maintain the ve-
hicle or performing maintenance ac-
tivities incorrectly may increase
your risk of injury or death during
service or while using the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha dealer perform
service.
WARNING
EWA15122
Turn off the engine when performing
maintenance unless otherwise
specified.●
A running engine has moving
parts that can catch on body
parts or clothing and electrical
parts that can cause shocks or
fires.
●
Running the engine while ser-
vicing can lead to eye injury,
burns, fire, or carbon monoxide
poisoning – possibly leading to
death. See page 2-2 for more in-
formation about carbon monox-
ide.WARNING
EWA15460
Brake discs, calipers, drums, and
linings can become very hot during
use. To avoid possible burns, let
brake components cool before
touching them.
EAU17302
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, replacement,
or repair of the emission control devic-
es and systems may be performed by
any repair establishment or individual
that is certified (if applicable). Yamaha
dealers are trained and equipped to
perform these particular services.
U5PG8BE0.book Page 1 Wednesday, June 27, 2012 2:53 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-3
7
EAU41742
Periodic maintenance chart for the emission control system TIPItems marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical
skills.NO.ITEM CHECK OR MAINTENANCE JOB INITIAL
THEREAFTER
EVERY
1
month 3
months 6
months 6
months 12
months
1* Fuel line
Check fuel hoses for cracks or damage.Replace if necessary.
2 Spark plugCheck condition.Adjust gap and clean.Replace if necessary.
3 Air lter elementClean with solvent.Replace if necessary.
4* CarburetorCheck engine idling speed and starter operation.Adjust if necessary.Clean.
5* Cylinder head and
exhaust systemCheck for leakage.Tighten if necessary.Decarbonize if necessary.
6* Spark arresterClean.
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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 chain and cable lube or engine oil
10W-30 lightly.
15
*Throttle grip
Check operation.Check throttle grip free play, and adjust if
necessary.Apply Yamaha chain and cable lube or engine oil
10W-30 lightly.
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.
U5PG8BE0.book Page 5 Wednesday, June 27, 2012 2:53 PM

PERIODIC MAINTENANCE AND ADJUSTMENT
7-6
7
EAU19604
Checking the spark plug The spark plug is an important engine
component, which is easy to check.
Since heat and deposits will cause any
spark plug to slowly erode, the spark
plug should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plug can re-
veal the condition of the engine.
To remove the spark plug1. Remove the spark plug cap.
2. Remove the spark plug as shown, with the spark plug wrench includ-
ed in the owner’s tool kit. To check the spark plug
1. Check that the porcelain insulator around the center electrode of the
spark plug is a medium-to-light tan
(the ideal color when the vehicle is
ridden normally).
TIPIf the spark plug shows a distinctly dif-
ferent color, the engine could be oper-
ating improperly. Do not attempt to
diagnose such problems yourself. In-
stead, have a Yamaha dealer check
the vehicle.
2. Check the spark plug for electrodeerosion and excessive carbon or
other deposits, and replace it if
necessary.
3. Measure the spark plug gap with a wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.
1. Spark plug cap
1
1. Spark plug wrench
1
Specified spark plug:PW50 NGK/BP4HS (ZAF)
PW50 NGK/BPR4HS
(AUT)(BEL)(CHE)(DEU)(DNK)
(ESP)(FIN)(FRA)(GBR)(GRC)
(IRL)(ITA)(NLD)(NOR)(POL)
(PRT)(SVN)(SWE)
PW50D NGK/BPR4HS
PW50D1 NGK/BPR4HS
PW50 DENSO/W14FP-L (ZAF)
1. Spark plug gap
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-7
7To install the spark plug
1. Clean the surface of the spark plug gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
2. Install the spark plug with the spark plug wrench, and then tight-
en it to the specified torque.
TIPIf a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4–1/2 turn
past finger tight. However, the spark
plug should be tightened to the speci-
fied torque as soon as possible.3. Install the spark plug cap.
EAU41103
Removing the power reduc-
tion plate To obtain full engine performance ca-
pability, removing the power reduction
plate is required.1. Remove the exhaust manifold by removing the bolts. WARNING!
Always let the exhaust system
cool prior to touching exhaust
components.
[EWA14581]
2. Remove the gasket.
3. Remove the power reduction plate.
TIPStore the power reduction plate with the
Owner’s Manual so that it is readily
available whenever you want to reduce
the engine power.4. Install the exhaust manifold and itsnew gasket by installing the bolts,
and then tighten the bolts to the
specified torque.
Spark plug gap:0.6–0.7 mm (0.024–0.028 in)
Tightening torque: Spark plug:20 Nm (2.0 m·kgf, 14 ft·lbf)
1. Exhaust manifold bolt
1
1. Exhaust manifold
2. Gasket
3. Power reduction plateTightening torque:Exhaust manifold bolt:
9 Nm (0.9 m·kgf, 6.5 ft·lbf)1
23
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PERIODIC MAINTENANCE AND ADJUSTMENT
7-8
7
EAU40893
Transmission oil The transmission oil must be checked
for oil leakage before each ride. If any
leakage is found, have a Yamaha deal-
er check and repair the motorcycle. In
addition, the transmission oil must be
changed at the intervals specified in the
periodic maintenance and lubrication
chart.1. Place the motorcycle on the cen- terstand.
2. Place an oil pan under the trans- mission to collect the used oil.
3. Remove the transmission oil filler cap, the transmission oil drain bolt
and its gasket to drain the oil from
the transmission. 4. Install the transmission oil drain
bolt and its new gasket, and then
tighten the bolt to the specified
torque.
5. Refill with the specified amount of the recommended transmission
oil, and then install and tighten the
oil filler cap.
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.
6. Start the engine, and then let it idlefor several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cause.
1. Transmission oil filler cap
1
1. Transmission oil drain bolt
2. Gasket
Tightening torque:Transmission oil drain bolt:14 Nm (1.4 m·kgf, 10 ft·lbf)
Recommended transmission oil: See page 9-1.
Oil change quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)
1
2
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