Chainsaw clutch drum assembly. When the engine's speed increases, the clutch engages the clutch drum and gear to drive the chain. If the chain isn't turning, the clutch drum may be defective.
Kit chain brake sas
Assembly-clutch drum w/bearing
Drum and sprocket gear assembly
Clutch drum and bearing. Pitch .325-Teeth 7.
Chain tension adjustment gear
Chain brake assembly-poulan pro
Chain tension adjustment gear screw