Pull-start starters are one type of manual starter and are started by pulling a rope wound around a reel on the flywheel side of the engine.
Pull-start starters are generally used for small, air-cooled gasoline engines.
Because gasoline engines do not have a very high compression ratio (approx. 8-11), some are equipped with an automatic decompressor to reduce the force necessary to pull the recoil rope when starting, while others are equipped with uniquely shaped cams.

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