Carburetor Adjustment; Idle Speed Adjustment - Yamaha RD250 Betriebsanleitung

Carburetor adjustment
The carburetor setting should not be
changed unnecessarily, o r the Perfor-
mance of the carburetor will be adversely
affected. It is advisable that the carbure-
tor be adjusted under the guidance of
your dealer.
Idle speed adjustment
1. Fully tighten the pilot air screws and
back them out as specified below:
Model
Pilot air
screw
Main
jet
Standard
V M 2 8 S C
1-1/4 turns
120
2. Adjust the play of each throttle wire
to 0.02 ~ 0.04" (0.5 ~ 1.0 mm).
3. After warming up the engine, turn the
throttle stop screw so that the engine
speed will rise to 1,050 ~ 1,200 rpm.
(The exhaust of both t w o cylinders
must take place alternately and must
be the same in noise level and frequen-
cy.)
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