FJSaDobo Sprocket 7T Clutch Drum Bearing Kit for Husqvarna 455/460 & Jonsered CS2255 — 7-tooth 3/8" Pitch with Bearing and Spark P

If your Husqvarna or Jonsered saw shows worn sprocket teeth, noisy clutch drum rotation, or oiling inconsistency, this kit supplies the main wear items needed to get the cutting assembly back to reliable operation. The parts match OEM clutch drum assembly numbers and are supplied as a coordinated set to reduce troubleshooting and multiple orders.

Will this kit fit my Husqvarna 455, 455E, 460 Rancher or Jonsered CS2255?

Yes — the kit is sized to match the factory clutch drum and sprocket specifications used on these models. It replaces the OEM clutch drum assembly (OEM number 537291702) and clutch versions 537110503, 537110501 and 503815901, and is listed for several CS2255 production years.

• Compatible with Husqvarna 455, 455E, 460 Rancher, 461 replacement part fits.
• Fits Jonsered CS2255 (multiple year models including 2008–2011 variants).
• Sprocket: 7-tooth, 0.375" (3/8") pitch for common chain types used on these saws.

What comes in the package and why each piece matters?

The kit arrives with all essential wear items so you can replace the sprocket and related components in one service session. Each component restores a specific function—rotation, load transfer, and ignition—so the chain drive performs smoothly.

• 1x 7T sprocket (0.375" pitch) — replaces worn teeth that cause skipping or tight spots.
• 1x clutch drum (7-tooth) — houses the sprocket and transmits clutch power to the chain.
• 1x sprocket bearing — ensures smooth drum rotation and reduces heat and wear.
• 1x worm gear — complements the drive interface where applicable for consistent engagement.
• 1x spark plug — included to simplify tune-up while replacing drive components.

How difficult is installation and what tools do I need?

Installation is straightforward for anyone comfortable with basic chainsaw maintenance. You will need standard hand tools and follow manufacturer torque and safety steps; replacing the drum and bearing typically takes under an hour for a practiced user.

• Tools: clutch removal tool or wrench, socket set, screwdrivers, circlip pliers if required.
• Steps: remove clutch and bar/chain, swap drum and bearing, reinstall clutch, check chain tension and lubrication.
• Tip: use OEM torque specs and inspect clutch surfaces and chain brake components while disassembled.

How durable are the parts and what should I inspect after replacement?

The kit components are made to withstand normal chainsaw loads when installed and maintained properly, but lifespan depends on cutting conditions and lubrication. Inspect the bearing, sprocket teeth, and drum for heat discoloration or abnormal wear during routine checks to extend service life.

• Check sprocket teeth for uneven wear or hooked shapes after heavy use.
• Ensure bearing spins freely and shows no play or grinding noise after installation.
• Monitor oil delivery to the bar and chain to prevent premature sprocket and drum wear.

Who is this for: This FJSaDobo replacement kit is tailored for homeowners, professional landscapers, and mechanics who service Husqvarna 455/460 Rancher or Jonsered CS2255 saws and prefer purchasing a complete wear-item set. It’s ideal if you want a coordinated set of parts to perform a reliable on-site repair or preventative maintenance without sourcing multiple individual components.