Chainsaw Clutch Drum & Needle Bearing Kit Sprocket For MS & HUS Series

Chainsaw clutch drum together with needle bearing is vital power‑output assembly. Engine power engages clutch shoe against drum, driving sprocket teeth to spin saw chain for cutting work. After heavy‑duty logging work, sprocket teeth tend to wear or chip; worn needle bearing creates excessive clearance, leading to chain slipping, power loss and abnormal noise. This set covers four mainstream sizes for MS180/170/018/017, HUS36/41/136/137/141/142, MS250/230/210/251, MS360/382/361 chainsaws. The drum is forged from alloy steel for impact resistance and long‑term wear resistance. Matching needle bearing cuts rotational friction. Repair shops can stock multiple sizes. Select correct kit per chainsaw model during service. Clean crankshaft mounting position before fitting, install drum and needle bearing smoothly for free rotation, fix slipping & noisy issues and restore cutting performance.