Yamaha GT1 Service Manual page 16

YAMAHA AUTOLUBE -
Carburetor and Autolube Cable Adjustments
2-3-B. Carburetor and Autolube Cable
Adjustments
Follow the preceeding in section 2-3-A steps to check
minimum stroke, and adjust it if incorr8ct. Then adjust
the carburetor and pump as described in the steps below.
1. Throttle Cable Adjustment
a.
Adjust the carburetor with the engine at idle,
and remove all but 1 mm. of slack from throttie
cable B.
Lock nut
Fig. 2-3-5
Adjust play of
throttle cable B
to 1mm (0.04in)
• To bring the play of the throttle cable into
correct adjustment, loosen or tighten the
throttle cable adjustment screw.
• To check this adjustment, lightly pull
throttle cable B, and engine speed should
slightly increase from idling r.p.m.
b. Next, adjust throttle cable IA} so that the gap
as shown in Fig. 2-3-6 below will be between
0.5
to
1.0
mm.
(0.02
~
0.04
in.}
/
(A)
Handle grip
Fig. 2-3-6
• Check the play of the throttle cable (A} by
pulling the outer part of the throttle grip.
If th8 play is excessive or insufficient, adjust
the play with the adjusment screw.
-10-
2. Autolube Cable Adjustment
a.
Adjust the pump cable so that the marking
(arrow} on the Autolube pump adjusting pulley
is aligned with the guide pin (see Fig. 2-3-8).
Begin by fully dosing the accelerator grip,
then slowly turning it back again so that the
slack in the throttle cable is completely taken
up. Next, adjust the pump cable so that the
marking on the pump adjustment pulley will
be align~d with the guide pin, as shown in Fig.
2-3-7. the point of adjustment is at the end
of the cable, just before it enters the case.
Loosen the lock nut and screw the adjuster in
or out, whichever direction is necessary to
obtain the correct adjustment.
Pump cable
Lock nut
Adjusting
guide pin
Adjusting pulley
Fig. 2-3-7
Fig. 2-3-8