Chainsaw Repair

The governer was adjustable,it had a spring and there were a bunch of notches you could hook the one end in,I always moved the spring to the tightest notch for a little more rpms but it was still quite low rpms,so no worry about doing that. An air vane was hooked to the carb's choke butterfly,and at a designated rpm the governer started to close the choke which slowed the motor down and made it 4-stroke,simple and effective.