Yamaha XS650SG Specifications download pdf (Page 196)

2.

a.

b.

C.

d.

deflection is approximately 20

-

30 mm

(0.8

-

1.2

in). If the deflection exceeds

20

-

30 mm (0.8

-

1.2 in) adjust the

chain tension.

Tension adjustment

Loosen the rear brake adjusting nut

(XS650-2F only).

Remove the cotter pin of the rear wheel

axle nut with pliers.

Loosen the rear wheel axle nut.

Loosen the lock nuts on each side. To

tighten chain,turn chain puller adjusters

clockwise. To loosen chain, turn adjusters

counterclockwise and push wheel for-

ward. Turn each adjuster exactly the

same amount to maintain correct axle

alignment. (There are marks on each side

of rear arm and on each chain puller; use

them to check for proper alignment.)

1. Locknut

4.

Roar

whal

ale

nut

2. Adjuster 5. Cotter pin

3. Marks for

alignment

e. After adjusting, be sure to tighten the

lock nuts and the rear wheel axle nut.

f. Inset-t the cotter pin into the rear wheel

axle nut and bend the end of the cotter

pin as shown in the illustration (if the

nut notch and the cotter pin hole do not

match, tighten the nut slightly to match).

NOTE:

Excessive chain tension will overload the en-

gine and other vital parts, keep the tension

within the specified limits. Also, replace the

rear axle cotter pin with a new one.

g. In the final step, adjust the play in the

brake pedal (XS650-2F only).

(PAGE 14

-

15)

2-5. ELECTRICAL

C. Ignition timing

1. Point gap must be set before setting

timing.

2. Ignition timing is checked with a

timing

light by observing the position of the

stationary marks stamped on the

stator

and the pointer on the generator rotor.

1. Top

dead

canter

3. Advanced mark

2. 15’

ETDC

at 1,200

rlmn

3.

4.

5.

Connect timing light to right (left)

cylinder spark plug lead wire. Ignition

timing of right cylinder must be set first.

Start the engine and keep the engine

speed as specified on the label. Use a

tachometer for checking.

The rotor pointer should line up the “F”

stamped timing mark on the

stator

at a

specified engine speed. If it does not

align, loosen the two breaker backing

plate screws (breaker assembly holding

screws for left cylinder) and move the

complete backing plate (breaker assem-

bly for left cylinder) until the point

marks align.

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