Overview
When the sprocket teeth wear down and the drum bore enlarges from heat and friction, it is time to replace the clutch drum and sprocket kit. This aftermarket kit matches original-equipment dimensions and material specs, providing a reliable fix at a lower cost than going through the dealer. Keeping this component in good shape extends the life of your chain and bar.
Key specifications
- Pitch: 3/8”
- Teeth: 7T
- Material: hardened steel
- Type: aftermarket replacement
Compatibility
Designed for Husqvarna 136 plus additional saws with identical clutch-drum geometry. Check the full compatibility chart before ordering, as small production-year changes can affect fitment.
Installation notes
Pull off the side cover and bar assembly. Use a piston stop to lock the crank, then remove the clutch mechanism. Swap the drum, sprocket, and bearing as a set for best results. Reassemble in reverse order, set chain tension so the chain lifts slightly off the bar underside, and run a short idle test to check for vibration or noise.
Common questions
Q: Will this 3/8”-7T sprocket clutch drum assembly kit fit my Husqvarna 136 with an 8-inch bar?
Yes, this kit is designed for the Husqvarna 136 and matches the 3/8-inch pitch setup used with an 8-inch bar. The main thing to verify is that your saw is running a 3/8 pitch chain, since the drum and chain pitch must match for proper operation.
Q: Does this clutch drum assembly come ready to install on a Husqvarna 136, or do I need to reuse parts from my old clutch setup?
This type of assembly kit typically replaces the drum portion of the clutch drive system, but you should compare it to your original parts before installation. On a Husqvarna 136, it’s a good idea to inspect the needle bearing and clutch area at the same time, clean out any debris, and lightly grease the bearing if it’s being reused.
Q: My Husqvarna 136 chain is slipping and the sprocket teeth look worn—will replacing this 3/8”-7T clutch drum help?
If the existing rim or spur area is worn, replacing the clutch drum assembly can restore proper chain drive and reduce skipping under load. It’s also smart to inspect the chain and bar groove at the same time, because a badly worn chain can quickly wear down a new 7-tooth sprocket.
