Periodic maintenance and adjustment7-27
1
2
3
4
5
678
9
10
11
12
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU74251
To check the drive chain slack 1. Place the motorcycle on the sides- tand.TIPWhen checking and adjusting the drive
chain slack, there should be no weighton the motorcycle.
2. Shift the transmission into the neu- tral position.
3. Measure the drive chain slack as shown. 4. If the drive chain slack is incorrect,
adjust it as follows. NOTICE: Im-
proper drive chain slack will
overload the engine as well as
other vital parts of the motorcy-
cle and can lead to chain slip-
page or breakage. To prevent
this from occurring, keep the
drive chain slack within the
specified limits.
[ECA10572]
EAU74260
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack. 1. Loosen the axle nut and the lock-
nut on each side of the swingarm.
2. To tighten the drive chain, turn the drive chain slack adjusting bolt on
each side of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting bolt on each side
of the swingarm in direction (b),
and then push the rear wheel for-
ward.
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both drive chain pullers are in the sameposition for proper wheel alignment.
1. Drive chain slackDrive chain slack:25.0–35.0 mm (0.98–1.38 in)
1
BX4-9-E0.book 27 ページ 2016年12月1日 木曜日 午後8時7分
Periodic maintenance and adjustment
7-28
1
2
3
4
5
67
8
9
10
11
12 3. Tighten the axle nut, then the lock-
nuts to their specified torques.
4. Make sure that the drive chain pull- ers are in the same position, the
drive chain slack is correct, and
the drive chain moves smoothly.
EAU23026
Cleaning and lubricating the
drive chainThe drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.NOTICE
ECA10584
The drive chain must be lubricated
after washing the motorcycle, ridingin the rain or riding in wet areas.
1. Clean the drive chain with kero- sene and a small soft brush.
NOTICE: To prevent damaging
the O-rings, do not clean the
drive chain with steam cleaners,
high-pressure washers or inap-
propriate solvents.
[ECA11122]
2. Wipe the drive chain dry.
3. Thoroughly lubricate the drive chain with a special O-ring chain
lubricant. NOTICE: Do not use
engine oil or any other lubri-
cants for the drive chain, as they may contain substances that
could damage the O-rings.
[ECA11112]
1. Axle nut
2. Drive chain puller
3. Drive chain slack adjusting bolt
4. Locknut
5. Alignment marksTightening torques:
Axle nut:190 N·m (19 kgf·m, 137 lb·ft)
Locknut: 16 N·m (1.6 kgf·m, 12 lb·ft)
1
2 3
45
(a)
(b)
BX4-9-E0.book 28 ページ 2016年12月1日 木曜日 午後8時7分
Periodic maintenance and adjustment
7-40
1
2
3
4
5
67
8
9
10
11
12 Engine overheating
WARNING
EWAT1041
Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.
Place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the de-
tent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the capwhile turning it counterclockwise, and then remove the cap.
TIPIf coolant is not available, tap water can be temporarily us
ed instead, provided that it is changed to the recommended coolantas soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
BX4-9-E0.book 40 ページ 2016年12月1日 木曜日 午後8時7分
11-1
1
2
3
4
5
6
7
8
9
1011
12
IndexAABS warning light.................................... 4-6
Air filter element .................................... 7-18
Auxiliary DC connector ......................... 4-46BBattery................................................... 7-33
Brake and clutch levers, checking and lubricating ........................................... 7-30
Brake and shift pedals, checking and lubricating ........................................... 7-29
Brake fluid, changing ............................ 7-26
Brake fluid level, checking .................... 7-25
Brake lever ............................................ 4-31
Brake lever free play, checking ............. 7-24
Brake light switches .............................. 7-24
Brake pedal ........................................... 4-31
Brake system ........................................ 4-32CCables, checking and lubricating .......... 7-29
Canister................................................. 7-13
Care ........................................................ 8-1
Catalytic converter ................................ 4-36
CCU ...................................................... 4-38
Clutch lever ........................................... 4-30
Clutch lever free play, adjusting ............ 7-23
Coolant.................................................. 7-16
Cowlings and panels, removing and installing................................................ 7-9DData recording, vehicle ......................... 10-2
Diagnostic connector ............................ 10-2
Dimmer switch ........................................ 4-4
Display, main screen............................... 4-9
Display, menu screen ........................... 4-15 Document storage ................................ 4-39
Drive chain, cleaning and lubricating .... 7-28
Drive chain slack .................................. 7-27
EEngine break-in ...................................... 6-3
Engine idling speed, checking .............. 7-19
Engine oil and oil fi
lter cartridge ........... 7-13
Engine serial number............................ 10-1
Engine trouble warning light ................... 4-6
EXUP system ....................................... 4-46FFront and rear brake pads, checking .... 7-25
Front fork, adjusting .............................. 4-40
Front fork, checking .............................. 7-31
Fuel....................................................... 4-34
Fuel consumption, tips for reducing........ 6-3
Fuel level warning light ........................... 4-6
Fuel tank breather hose and overflow hose ................................................... 4-36
Fuel tank cap ........................................ 4-33
Fuses, replacing ................................... 7-34GGlossary ................................................. 3-3HHandlebar switches ................................ 4-3
Hazard switch ......................................... 4-4
High beam indicator light ........................ 4-6
Horn switch ............................................. 4-4IIdentification numbers .......................... 10-1
Ignition circuit cut-off system ................ 4-47
Immobilizer system ................................. 4-1
Immobilizer system indicator light........... 4-7
Indicator lights and warning lights .......... 4-6
MMain switch/steering lock ........................ 4-2
Maintenance and lubrication, periodic..... 7-5
Maintenance, emission control system ... 7-3
Matte color, caution ................................. 8-1
Model label ............................................ 10-2NNeutral indicator light .............................. 4-6OOil pressure and coolant temperature warning light.......................................... 4-8PParking .................................................... 6-4
Part locations .......................................... 2-1
Pass/LAP switch ..................................... 4-4RRear view mirrors .................................. 4-40SSafety information ................................... 1-1
Seats ..................................................... 4-37
Shifting .................................................... 6-2
Shift pedal ............................................. 4-30
Shift timing indicator light ........................ 4-7
Shock absorber assembly, adjusting .... 4-42
Sidestand .............................................. 4-47
Sidestand, checking an d lubricating...... 7-31
Spark plugs, checking ........................... 7-12
Special features ...................................... 3-1
Specifications .......................................... 9-1
Stability control indicator light.................. 4-7
Starting the engine .................................. 6-1
Steering, checking................................. 7-32
Steering damper and suspension
warning light.......................................... 4-8
BX4-9-E0.book 1 ページ 2016年12月1日 木曜日 午後8時7分