Yamaha pw80 - Manual (Page 25)

4. Turn the pilot air screw in or out until the
idle speed is at the highest possible r/min.
5. Turn the throttle stop screw in or out un­
til idle speed is at desired r/min.
Idle speed:
1,650—1,750 r/min
1. Throttle stop screw
If the engine, when warm, hesitates after
adjusting as described, turn the idle air
mixture screw in or out in 1/4 turn in­
crements until the problem is eliminate.
NOTE: --------------------------------------------------
Pilot air and throttle stop screws should be ad­
justed so that engine response from idle posi­
tion is rapid and without hesitation.
AUTOLUBE PUMP
1. Cable adjustment
a. Remove the grommet from the oil pump
cover.
b. Start the engine.
c. When the throttle cable becomes tight
and the engine begins to run faster, hold
the throttle grip steady and check to see
that the match mark on the adjust pulley
is aligned with the pump case mark. If
not, loosen the pump cable locknut and
make adjustment by turning the adjuster.
1. Adjuster
NOTE:-
Lock nut
After adjusting, be sure to tighten the lock nut
completely.
2. Air bleeding
The oil pump just be bled after the oil pipe
or oil pump is reinstalled.
a. Remove the oil pump cover.
b. Remove the bleeder bolt.
c. When the bleeder bolt is removed, oil con­
taining air bubbles flows out. Let the oil
flow out until air bubbles completely
disappear, and reinstall the bleeder bolt.
NOTE:______________________________
• Place a rag or oil can under the engine.
• Add the Autolube oil to the oil tank before
bleeding.
• Thoroughly clean the engine exterior of oil.
3. Minimum plunger stroke adjustment
a. Set the dial gauge as illustrated, and
check to see if the plunger stroke is cor­
rect while keeping the engine idling.
1. Set position
3. Pump case mark
2. Mark
-13-