YAMAHA T105 1998 Workshop Manual

EAH85201Front brake adjustment
The front brake lever free play should be
adjusted to 8~12 mm at the brake lever
end. Adjustment is accomplished at the
front brake hub. To adjust, turn the adjuster
clockwise to reduce play or counterclock-
wise to increase play.
50
a
A. Free play: 8~12 mm1Adjuster
T105(E) O/M-3 9/11/01 11:17 AM Page 50 (1,1)

Rear brake adjustment
The rear brake pedal free play should be
adjusted to 20~30 mm at the brake pedal
end. Turn the adjuster on the brake rod
clockwise to reduce play or counterclock-
wise to increase play.EUU69800w1. The rear brake pedal adjustment must
be checked whenever the chain is ad-
justed or the rear wheel is removed
and then reinstalled.
2. Check the operation of the brake light
after adjusting the rear brake.
51
A. Free play: 20~30 mm1Adjuster
T105(E) O/M-3 9/11/01 11:17 AM Page 51 (1,1)

EAH83301Brake light switch adjustment
The brake light switch is operated by
movement of the brake pedal. To adjust,
hold the main body of the switch so it does
not rotate and turn the adjusting nut.
Proper adjustment is achieved when the
brake light comes on just before the brake
begins to take effect.EAH81601Checking the brake shoes
A wear indicator is provided on each brake.
This indicator allows checking of shoe
wear without disassembling the brake.
Apply the brake and check the position of
the indicator. If the indicator reaches to the
wear limit line, ask a Yamaha dealer to re-
place the shoes.
52
1Brake light switch1Wear limit2Indicator
T105(E) O/M-3 9/11/01 11:17 AM Page 52 (1,1)

EAI40001Drive chain slack checkEUU04801NOTE:
Spin the wheel several times and find the
tightest position of the chain. Check and/or
adjust the chain slack while it’s in this tight-
est position.Inspect the drive chain when the motorcy-
cle is on the centerstand. Check the slack at
the position shown in the illustration.
Normal slack is approximately 20~30 mm.
If the slack exceeds 30 mm, adjust it.
53
a. Drive chain slack: 20~30 mm
T105(E) O/M-3 9/11/01 11:17 AM Page 53 (1,1)

Drive chain slack adjustment
1. Loosen the rear brake adjuster.
2. Loosen the axle nut.
3. Loosen the sprocket shaft nut and the
axle nut.
4. To tighten the chain, turn the chain ad-
juster clockwise. To loosen the chain,
turn the adjuster counterclockwise and
push the wheel forward. Turn each ad-
juster exactly the same amount to main-
tain correct axle alignment. There are
marks on each side of the swingarm and
a match mark on each chain puller. Use
these marks to align the rear wheel.EUU33301cCToo little chain slack will overload the en-
gine and other vital parts. Keep the slack
within the specified limits.
54
1Rear brake adjuster2Axle nut1Axle nut2Sprocket shaft nut
3Chain puller4Chain adjuster
T105(E) O/M-3 9/11/01 11:17 AM Page 54 (1,1)

5. After adjusting, be sure to tighten the
loosened parts.
Tighten the axle nut at specified
torque.
6. Adjust the free play in the brake pedal.
55
Tightening torque:
Axle nut:
60 Nm (6.0 m•kg)
Sprocket shaft nut:
80 Nm (8.0 m•kg)
T105(E) O/M-3 9/11/01 11:17 AM Page 55 (1,1)

EAI40601Drive chain lubrication
The chain consists of many parts which
work with each other. If the chain is not
maintained properly, it will wear out quick-
ly. Therefore, the chain must be serviced
regularly. This service is especially neces-
sary when riding in dusty areas.
1. Use any of the many brands of chain
lubricant. First, remove all dirt and
mud from the chain with a brush or
cloth, then apply lubricant between
both rows of side plates and on all
center rollers. The chain should be lu-
bricated every 500 km.
2. If the chain is too dirty or rusty, take
the motorcycle for repair.
56
T105(E) O/M-3 9/11/01 11:17 AM Page 56 (1,1)

EAI30601Brake lever and pedal
Lubricate the pivoting parts.EAI30801Center and sidestand
Lubricate the pivoting parts. Check to see
that the center and sidestand move up and
down smoothly.
57
Recommended lubricant:
Yamalube 4 or SAE 20W40 motor oilRecommended lubricant:
Yamalube 4 or SAE 20W40 motor oil
T105(E) O/M-3 9/11/01 11:17 AM Page 57 (1,1)

EAH20501Front fork inspectionEUU65700wSecurely support the motorcycle so there
is no danger of it falling over.Operation check
Place the motorcycle on a level place.
a. Hold the motorcycle in an upright po-
sition and apply the front brake.
b. Stroke the front forks up and down
several times.EUU42500cCIf any damage or unsmooth movement is
found with the front fork, consult a
Yamaha dealer.
58
T105(E) O/M-3 9/11/01 11:17 AM Page 58 (1,1)

EAI70001*Battery
Check the level of the battery electrolyte
and make sure that the terminals are tight.
Add distilled water if the electrolyte level is
low.NOTE:
The battery fluid should be checked at least
once a month.EUU33601cCWhen inspecting the battery, be sure the
breather pipe is routed correctly.
59
1Upper level2Lower level
T105(E) O/M-3 9/11/01 11:17 AM Page 59 (1,1)