ADJUST THERMOSTAT
The above shows clear steps in out to adjust your thermostat, but what if the thermostat doesn’t use index marks.
My prefered method of adjusting the choke:
- Loosen the 3 screws enough to allow the thermostat to be turned.
- Hold the throttle open a bit so the fast idle doesn’t impede the choke.
- Twist the thermostat closing the choke.
- When the choke valve closes turn about 1/8″ more to give it some preload.
- Now start the engine and make sure the choke is opening. After it is warmed up, maybe 20 minutes, the choke valve should be opened fully.