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Periodic maintenance an d a djustment
7-3
7
EAU69180
Perio dic maintenance chart for the emission control system
TIP
Items marked with an asterisk should be performed by a Yamaha dealer as they
require special tools, data and technical skills.
4 *Carburetor Check engine idling speed and
starter operation.
Adjust if necessary.
Clean.
5 *Cylinder head and
exhaust system Check for leakage.
√
Tighten if necessary.
Decarbonize if necessary.
6
*Spark arrester Clean.√
NO. ITEM CHECK OR MAINTENANCE JOB
1 month3 months
6 months
6 months12 months
1
*Fuel line Check fuel hoses for cracks or
damage.√√√ √
√√√ √
√√
√
√
√√
√
√
√√
√ Replace if necessary.
2Spark plug Check condition.
Adjust gap and clean.
Replace if necessary.
3Air filter element
Clean with solvent.
Replace if necessary.
THEREAFTER
EVERYINITIAL
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Periodic maintenance an d a djustment
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7
EAU19607
Checkin g the spark plu g
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 main-
tenance and lubrication chart. In addi-
tion, the condition of the spark plug
can reveal the condition of the engine.
To remove the spark plu g
1. 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 plu
g
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 vehi-
cle is ridden normally).
TIP
If 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 specifi-
cation.
1. Spark plug cap
1. Spark plug wrench
1
1
Specified spark plu g:
NGK/BP4HS (PW50_ZAF)
NGK/BPR4HS
(PW50_AUT/BEL/CHE/CYP/CZE/D
EU/DNK/ESP/FIN/FRA/GBR/GRC/I
RL/ITA/NLD/NOR/POL/PRT/SVK/S
VN/SWE/TUR, PW50H, PW50H2)
DENSO/W14FP-L (PW50_ZAF)
1. Spark plug gap
1
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Periodic maintenance an d a djustment
7-7
7 To install the spark plu
g
1. Clean the surface of the spark plug gasket and its mating surfa-
ce, 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.
TIP
If 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
specified torque as soon as possible.
3. Install the spark plug cap.
EAU41104
Removin g the power re duc-
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 touchin g exhaust
components.
[EWA14582]
2. Remove the gasket.
3. Remove the power reduction plate.
Spark plu g g ap:
0.6–0.7 mm (0.024–0.028 in)
Ti ghtenin g torque:
Spark plug: 20 N·m (2.0 kgf·m, 14 lb·ft)
1. Exhaust manifold bolt
1. Exhaust manifold
2. Gasket
3. Power reduction plate
1
1
2
3
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Periodic maintenance an d a djustment
7-8
7
TIP
Store 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 its
new gasket by installing the bolts,
and then tighten the bolts to the
specified torque.
EAU40896
Transmission oil
The transmission 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 lubrica-
tion chart.
To chan ge the transmission oil
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.
Tightening torque:
Exhaust manifold bolt: 9 N·m (0.9 kgf·m, 6.5 lb·ft)
1. Transmission oil filler cap
1. Transmission oil drain bolt
2. Gasket
1
12
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Periodic maintenance an d a djustment
7-9
7 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.
NOTICE
ECA10453
In or der to prevent clutch slip-
pa ge (since the transmission oil
also lu bricates the clutch), d o
not mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of a
hi gher quality than specifie d. In
a ddition, do not use oils la bele d
“ENERGY CONSERVING II” or
hi gher.
Make sure that no forei gn mate-
rial enters the transmission.
6. Check the O-ring for damage, and replace it if necessary. 7. Install and tighten the transmis-
sion oil filler cap.
8. Start the engine, and then let it idle for several minutes while checking
the transmission for oil leakage. If
oil is leaking, immediately turn the
engine off and check for the cau-
se.
Tightenin g torque:
Transmission oil drain bolt: 14 N·m (1.4 kgf·m, 10 lb·ft)
Recommen ded transmission oil:
See page 9-1.
Oil chan ge quantity:
0.30 L (0.32 US qt, 0.26 Imp.qt)
1. O-ring
1
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Periodic maintenance an d a djustment
7-12
7
3. Insert the tailpipe into the muffler,
and then install and tighten the
screw.
TIP
Make sure to align the screw hole
when inserting the tailpipe.
EAU39931
Adjustin g the car buretor
The 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 b een set and ex-
tensively teste d at the Yamaha fac-
tory. Chan gin g these settin gs
without sufficient technical knowl-
e dge may result in poor perfor-
mance of or d amage to the en gine.
1. Spark arrester
1
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Periodic maintenance an d a djustment
7-13
7
EAU21363
A djustin g the en gine i dlin g
spee d
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
TIP
A 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.
TIP
The 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).
TIP
If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
1. Throttle stop screw
1 (a)
(b)
En
gine i dlin g spee d:
1650–1750 r/min
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Periodic maintenance an d a djustment
7-20
7
EAU23121
A djustin g the Autolu be pump
The Autolube pump is a vital and so-
phisticated component of the engine,
which must be adjusted by a Yamaha
dealer at the intervals specified in the
periodic maintenance and lubrication
chart.
EAU43634
Lu bricatin g the front an d rear
b rake levers
The pivoting points of the front and rear
brake levers must be lubricated at the
intervals specified in the periodic main-
tenance and lubrication chart.
Recommen ded lu bricant:
Lithium-soap-based grease
U2SA83E0.book Page 20 Monday, July 11, 2016 2:35 PM
