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: .325”
- Teeth: 7T
- Material: hardened steel
- Type: aftermarket replacement
Compatibility
This kit is compatible with Husqvarna 435 435E 440 440E Chainsaw 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 .325” 7-tooth clutch drum kit fit my Husqvarna 440E, or is it only for the 435 models?
Yes, this kit is made for Husqvarna 435, 435E, 440, and 440E chainsaws. It uses the .325” pitch 7-tooth drum setup, so it’s a good match as long as your saw is using the standard .325” drive system for those models.
Q: Does this clutch drum bell rim sprocket bearing kit come with everything I need to replace a worn drum on my Husqvarna 435?
This kit includes the clutch drum, rim sprocket, and the bearing, which are the common wear parts in that area. It’s a practical replacement if your drum is grooved, the sprocket teeth are worn, or the needle bearing feels rough when the drum is spun by hand.
Q: What should I check during installation on my Husqvarna 435E or 440E to make sure this sprocket kit lasts?
Clean the clutch area thoroughly before fitting the new drum and bearing, and inspect the worm gear and clutch shoes for wear while you have it apart. It also helps to lightly grease the needle bearing and confirm your chain and bar match the .325” pitch so the new sprocket wears evenly.
