Page 49 of 116
Instrument and control functions
4-23
4
3. Remove the bolts, and then install
the bolts in the desired position.
4. Install the windshield to the high position by installing the bolts, and
then tighten the bolts to the spec-
ified torque. WARNING! A loose
win dshiel d coul d cause an acci-
d ent. Be sure to ti ghten the
screws to the specified torque.
[EWA15511]
5. Place the bolt access covers, and
then install the quick fasteners.
To chan ge the win dshield height to
the low position 1. Remove the bolt access covers by removing the quick fasteners.
2. Remove the windshield by remov- ing the bolts.
3. Remove the bolts, and then install the bolts in the desired position.
1. Bolt
1. Bolt
1. Bolt
1
1
1
1
1
1
1. Bolt
Tightenin g torque:
Windshield bolt: 8 N·m (0.8 kgf·m, 5.8 lb·ft)
1. Bolt access cover
1
1
1
UB74E0E0.book Page 23 Tuesday, May 2, 2017 1:04 PM
Page 50 of 116
Instrument and control functions
4-24
4
4. Install the windshield to the lowposition by installing the bolts, and
then tighten the bolts to the spec-
ified torque. WARNING! A loose
win dshield could cause an acci-
d ent. Be sure to ti ghten the
screws to the specified torque.
[EWA15511]
5. Place the bolt access covers, and
then install the quick fasteners.
1. Bolt
1. Bolt
1. Bolt
1
1
1
1
1
1
Tightening torque:
Windshield bolt: 8 N·m (0.8 kgf·m, 5.8 lb·ft)
UB74E0E0.book Page 24 Tuesday, May 2, 2017 1:04 PM
Page 65 of 116

Periodic maintenance an d a djustment
7-2
7
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.
EAU79250
Owner’s tool kit
The owner’s tool kit is located on the
bottom of the seat. (See page 3-9.)
The 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.
TIP
If you do not have the tools or experi-
ence required for a particular job, have
a Yamaha dealer perform it for you.
1. Owner’s tool kit
1
UB74E0E0.book Page 2 Tuesday, May 2, 2017 1:04 PM
Page 71 of 116

Periodic maintenance an d a djustment
7-8
7
EAU19623
Checkin g the spark plu g
The spark plug is an important engine
component, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
it should be removed and checked in
accordance with the periodic mainte-
nance and lubrication chart. In addi-
tion, the condition of the spark plug
can reveal the condition of the engine.
The porcelain insulator around the
center electrode of the spark plug
should be a medium-to-light tan (the
ideal color when the vehicle is ridden
normally). If the spark plug shows a
distinctly different color, the engine
could be operating improperly. Do not
attempt to diagnose such problems
yourself. Instead, have a Yamaha deal-
er check the vehicle.
If the spark plug shows signs of elec-
trode erosion and excessive carbon or
other deposits, it should be replaced.
Before installing a spark plug, the
spark plug gap should be measured
with a wire thickness gauge and, if
necessary, adjusted to specification. Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the spark
plug threads.
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.
Specified
spark plu g:
NGK/LMAR8A-9
1. Spark plug gap
Spark plu g g ap:
0.8–0.9 mm (0.031–0.035 in)
Ti ghtenin g torque:
Spark plug: 13 N·m (1.3 kgf·m, 9.4 lb·ft)
UB74E0E0.book Page 8 Tuesday, May 2, 2017 1:04 PM
Page 74 of 116

Periodic maintenance an d a djustment
7-11
7 7. Install the oil filter element cover
by installing the bolts, then tight-
ening them to the specified
torque.TIP
Make sure that the O-ring is properly
seated.
8. Install the engine oil drain bolt andits new gasket, and then tighten
the bolt to the specified torque.
9. Refill with the specified amount of the recommended engine oil.
TIP
Be sure to wipe off spilled oil on any
parts after the engine and exhaust sys-
tem have cooled down.
NOTICE
ECA24060
Make sure that no forei gn material
enters the crankcase.
10. Install and tighten the oil filler cap and its O-ring.
11. Start the engine, and then let it idle for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
12. Turn the engine off, and then check the oil level and correct it if
necessary.1. Oil filter element
2. O-ring
Tightenin g torque:
Oil filter element cover bolt: 10 N·m (1.0 kgf·m, 7.2 lb·ft)
Ti ghtenin g torque:
Engine oil drain bolt:
20 N·m (2.0 kgf·m, 14 lb·ft)
Recommen ded en gine oil:
See page 9-1.
Oil quantity: Oil change:
1.50 L (1.59 US qt, 1.32 Imp.qt)
With oil filter removal: 1.60 L (1.69 US qt, 1.41 Imp.qt)
1
2
UB74E0E0.book Page 11 Tuesday, May 2, 2017 1:04 PM
Page 75 of 116

Periodic maintenance an d a djustment
7-12
7
EAU20067
Final transmission oil
The final transmission case must be
checked for oil leakage before each
ride. If any leakage is found, have a
Yamaha dealer check and repair the scooter. In addition, the final transmis-
sion oil must be changed as follows at
the intervals specified in the periodic
maintenance and lubrication chart. 1. Start the engine, warm up the final transmission oil by riding the
scooter for several minutes, and
then stop the engine.
2. Place the scooter on the center- stand.
3. Place an oil pan under the final transmission case to collect the
used oil.
4. Remove the final transmission oil filler cap and its O-ring from the fi-
nal transmission case.
5. Remove the final transmission oil drain bolt and its gasket to drain
the oil from the final transmission
case. 6. Install the final transmission oil
drain bolt and its new gasket, and
then tighten the bolt to the speci-
fied torque.
7. Refill with the specified amount of the recommended final transmis-
sion oil. WARNING! Make sure
that no forei gn material enters
the final transmission case.
Make sure that no oil gets on
the tire or wheel.
[EWA11312]
8. Install the final transmission oil fill- er cap and its new O-ring, and
then tighten the oil filler cap.
9. Check the final transmission case for oil leakage. If oil is leaking,
check for the cause.
1. Final transmission oil filler cap
2. O-ring
1
2
1. Final transmission oil drain bolt
2. Gasket
Tightenin g torque:
Final transmission oil drain bolt: 20 N·m (2.0 kgf·m, 14 lb·ft)
Recommen ded final transmission
oil: See page 9-1.
Oil quantity: 0.20 L (0.21 US qt, 0.18 Imp.qt)
12
UB74E0E0.book Page 12 Tuesday, May 2, 2017 1:04 PM
Page 81 of 116
Periodic maintenance an d a djustment
7-18
7
12. Install the air filter case bolts, and
then tighten the bolts to the spec-
ified torque.
13. Install the V-belt case cover by in- stalling the screws.
14. Install the air filter case cover by installing the screws.
EAU21386
Checkin g the throttle grip free
play
Measure the throttle grip free play as
shown.
Periodically check the throttle grip free
play and, if necessary, have a Yamaha
dealer adjust it.
1. Rear wheel sensor lead
2. White tape
3. Lead holder
Ti ghtening torque:
Bolt:
10 N·m (1.0 kgf·m, 7.2 lb·ft)
1
33
22
3
2
2
3
1. Throttle grip free play
Throttle grip free play:
3.0–5.0 mm (0.12–0.20 in)
1
UB74E0E0.book Page 18 Tuesday, May 2, 2017 1:04 PM