2014 YAMAHA SR400 wheel torque

PERIODIC MAINTENANCE AND ADJUSTMENT
6-22
1
2
3
4
567
8
9
10
11
12
EAU22762
Drive chain slackThe drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU59591
To check the drive chain slack 1. Place the motorcycle on the cen- terstand.
2. Shift the transmission into the neu- tral position.
3. Push on the drive chain at the cen- ter point between the drive axle
and the rear wheel axle with a
force of 50 N (5.0 kgf, 11 lbf).
4. Measure drive chain slack as shown. 5. If the drive chain slack is incorrect,
adjust it as follows.
EAU59641
To adjust the drive chain slack
Consult a Yamaha dealer before ad-
justing the drive chain slack.1. Take the motorcycle off the center- stand, and then put the sidestand
down.
2. Loosen the brake pedal free play adjusting nut, brake torque rod nut,
and axle nut. 3. Loosen the drive chain puller lock-
nut at each end of the swingarm.
4. Place the motorcycle on the cen- terstand.
5. To tighten the drive chain, turn the drive chain slack adjusting bolt at
each end of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting bolt at each end
of the swingarm in direction (b),
and then push the rear wheel for-
ward. NOTICE: Improper drive
chain slack will overload the en-
Drive chain slack: 30.0–40.0 mm (1.18–1.57 in)
1. Drive chain slack
1
1. Brake pedal free play adjusting nut
2. Drive chain slack adjusting bolt
3. Drive chain puller locknut
4. Axle nut
5. Brake torque rod nut
6. Brake torque rod
6
12
3
4
5
2RD-9-E0.book 22 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-23
1
2
3
4
56
7
8
9
10
11
12 gine as well as other vital parts
of the motorcycle and can lead
to chain slippage or breakage.
To prevent this from occurring,
keep the drive chain slack with-
in the specified limits.
[ECA10572]
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.
6. Take the motorcycle off the center- stand, and then put the sidestand down.
7. Tighten both drive chain puller locknuts, and then tighten the axle
nut and brake torque rod nut to
their specified torques.
8. Adjust the brake pedal free play. (See page 6-18.)
WARNING
EWA10661
After adjusting the brake pedal free
play, check the operation of thebrake light.
9. 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
1. Axle nut
2. Drive chain puller locknut
3. Drive chain slack adjusting bolt
4. Alignment marks
1
2
(a) (b)
3
4
Tightening torques:
Drive chain puller locknut:16 Nm (1.6 m·kgf, 12 ft·lbf)
Axle nut: 129 Nm (12.9 m·kgf, 92 ft·lbf)
Brake torque rod nut:
19 Nm (1.9 m·kgf, 14 ft·lbf)
2RD-9-E0.book 23 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-36
1
2
3
4
567
8
9
10
11
12
6. Pull the wheel axle out, and then
remove the collar and wheel.
NOTICE: Do not apply the brake
after the wheel and brake disc
have been removed, otherwise
the brake pads will be forced
shut.
[ECA11073]
To install the front wheel 1. Install the speedometer gear unit into the wheel hub so that the pro-
jections mesh with the slots.
2. Install the collar into the right side of the wheel hub.
3. Lift the wheel up between the fork legs.
TIPMake sure that there is enough space
between the brake pads before insert-
ing the brake disc and that the slot in
the speedometer gear unit fits over theretainer on the fork leg.
4. Insert the wheel axle from the left-hand side, and then install the
washer and axle nut.
5. Take the motorcycle off the center- stand so that the front wheel is on
the ground, and then put the side-
stand down.
6. Tighten the axle nut and the wheel axle holder nuts to their specified
torques
7. While applying the front brake, push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
8. Connect the speedometer cable.
1. Slot
2. Speedometer gear unit
3. Projection
2
3
1
1. Retainer
2. Slot
1
2
Tightening torques:
Axle nut:104 Nm (10.4 m·kgf, 74 ft·lbf)
Wheel axle holder nut: 9 Nm (0.9 m·kgf, 6.5 ft·lbf)
2RD-9-E0.book 36 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-37
1
2
3
4
56
7
8
9
10
11
12
EAU25081
Rear wheel
EAU59611
To remove the rear wheel
WARNING
EWA10822
To avoid injury, securely support the
vehicle so there is no danger of itfalling over. 1. Loosen the axle nut and the brake torque rod nut at the brake shoe
plate.
2. Disconnect the brake torque rod from the brake shoe plate by re-
moving the nut, washer and the
bolt.
3. Place the motorcycle on the cen-terstand.
4. Remove the brake pedal free play adjusting nut, and then disconnect
the brake rod from the brake cam-
shaft lever.
5. Loosen the drive chain puller lock- nut and the drive chain slack ad-
justing bolt on both ends of the swingarm.
6. Remove the axle nut and washer.
7. While supporting the rear wheel, pull the wheel axle out.
8. Remove the chain puller assem- blies and the spacer.
1. Brake rod
2. Brake camshaft lever
3. Brake pedal free play adjusting nut
4. Drive chain slack adjusting bolt
5. Drive chain puller locknut
6. Drive chain puller
7. Washer
8. Axle nut
9. Brake torque rod nut
10.Brake torque rod1 10
34
5
6
7
8
9
7
2
1. Drive chain slack adjusting bolt
2. Drive chain puller locknut
3. Axle nut
4. Washer
3
2
1
4
2RD-9-E0.book 37 ページ ２０１３年１１月２８日　木曜日　午後４時１８分

PERIODIC MAINTENANCE AND ADJUSTMENT
6-38
1
2
3
4
567
8
9
10
11
12
9. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
TIPThe drive chain does not need to be
disassembled in order to remove andinstall the wheel.
To install the rear wheel1. Install the spacer into left side of the wheel hub.
2. Install the chain pullers and the wheel by inserting the wheel axle
from the left-hand side.
3. Install the drive chain onto the rear sprocket. 4. Install the washer and axle nut.
5. Install the brake rod onto the brake
camshaft lever, and then install the
brake pedal free play adjusting nut
onto the brake rod.
6. Connect the brake torque rod to the brake shoe plate by installing
the bolt, washer and nut.
7. Adjust the drive chain slack. (See page 6-22.)
8. Take the motorcycle off the center- stand so that the rear wheel is on
the ground, and then put the side-
stand down.
9. Tighten the brake torque rod nut and axle nut to the specified
torques.
10. Adjust the brake pedal free play. (See page 6-18.)
WARNING
EWA10661
After adjusting the brake pedal free
play, check the operation of the
brake light.
1. Drive chain
1
Tightening torques:Brake torque rod nut:19 Nm (1.9 m·kgf, 14 ft·lbf)
Axle nut: 129 Nm (12.9 m·kgf, 92 ft·lbf)
2RD-9-E0.book 38 ページ ２０１３年１１月２８日　木曜日　午後４時１８分