Yamaha DT125R Owner's Manual download pdf (Page 54)

6-17

PERIODIC MAINTENANCE AND MINOR REPAIR

EAU00632

Idle speed adjustment

1. Start the engine and warm it up

for a few minutes at approxi-

mately 1,000 to 2,000 r/min.

Occasionally rev the engine to

4,000 to 5,000 r/min. The engine

is warm when it quickly responds

to the throttle.

2. Set the idle to the specified

engine speed by adjusting the

throttle stop screw. Turn the

screw in direction a to increase

engine speed and in direction b

to decrease engine speed.

1. Throttle stop screw

NOTE:

If the specified idle speed cannot be

obtained by performing the above

adjustment, consult a Yamaha deal-

er.

Standard idle speed:

1,250 ~ 1,450 r/min

EAU00634

Throttle cable free play

adjustment

NOTE:

Before checking the throttle cable

free play, the engine idling speed

should be adjusted.

Adjust the throttle cable by turning

the adjusting nut so that specified

free play at the throttle grip is

obtained.

a. Free play

Free play:

3 ~ 5 mm

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Yamaha DT125R Owner's Manual Page 54