On most small engines the only spring that matters is one that goes from throttle plate on carb to end of governor arm. This spring must be exact unit, and hooked up in exact spot, because the system works by delicate balancing act. The spring is just strong enough to keep throttle closed most of the time. But when governor arm pulls then the spring is overwhelmed and it lets throttle get pulled open. This is the way that engine gets more power when under max load. If you go to site like Jacks small engine and put in engine numbers you may be able to see where spring went by looking at picture. If you do not have original spring - get one. Motor will never work right without balanced spring. If you run with no spring and throttle goes wide open - even for a minute you will over speed motor.
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On most small engines the only spring that matters is one that goes from throttle plate on carb to end of governor arm. This spring must be exact unit, and hooked up in exact spot, because the system works by delicate balancing act. The spring is just strong enough to keep throttle closed most of the time. But when governor arm pulls then the spring is overwhelmed and it lets throttle get pulled open. This is the way that engine gets more power when under max load. If you go to site like Jacks small engine and put in engine numbers you may be able to see where spring went by looking at picture. If you do not have original spring - get one. Motor will never work right without balanced spring. If you run with no spring and throttle goes wide open - even for a minute you will over speed motor.