Overview
This aftermarket clutch drum and sprocket kit serves as a direct replacement for the factory unit on your chainsaw. The clutch drum and sprocket kit houses the sprocket that drives the chain and absorbs engagement forces from the clutch, so when the sprocket teeth wear down and the drum bore enlarges from heat and friction, cutting performance and safety both suffer. Swapping in a fresh replacement restores reliable chain drive and helps protect the rest of the drivetrain.
Key specifications
- Pitch: 3/8”
- Teeth: 7T
- Material: hardened steel
- Type: aftermarket replacement
Compatibility
This kit is compatible with Stihl 044 046 MS440 MS460 MS461 MS441 MS361 and similar models from the same product family. Verify your chainsaw’s model number before purchasing to ensure the sprocket pitch and drum bore match your saw.
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” 7-tooth clutch drum kit fit my Stihl MS362C, and does it also work on an MS461?
Yes, this kit is made to replace Stihl part #1128 007 1000 and fits the listed models including MS362, MS362C, MS361, MS441, MS440, MS460, MS461, 044, and 046. Just make sure your saw is set up for a 3/8” pitch drive system, since the drum is a 7-tooth 3/8” sprocket.
Q: Can I use this drum on an 8” bar, or is that too short for a 3/8” 7T sprocket setup?
It can be used with an 8” bar as long as the bar, chain, and sprocket all match the same 3/8” pitch. The most important thing is confirming your chain pitch and clutch side setup, because sprocket compatibility matters more than bar length by itself.
Q: What should I check when installing this clutch drum kit on my Stihl MS440 or MS460?
Before installation, inspect the needle bearing, washer, and clutch area for wear, heat marks, or grooves, and replace the bearing if it feels rough. After fitting the drum, make sure the chain runs true in the sprocket, the oiling is working properly, and the rim/drum has no side-to-side binding.
