Clutch Drum Kit .325 Replacement for Stihl MS261 MS261C MS261CM Chainsaw Replace Part for 11411602902 A

Key Features

• Direct Mechanical Replacement: Engineered as a precise matching setup for your logging and land clearing equipment. This assembly restores optimal engine-to-chain power transfer, minimizing slippage and optimizing cutting performance.

• Heavy-Duty Construction: Fabricated from high-tensile, wear-resistant steel compounds designed to withstand the continuous high-RPM demands and physical friction of professional forestry work.

• Complete System Overhaul: Includes all critical wear items—from the central clutch shoe assembly to the foundational needle bearing—allowing you to fully rebuild your sprocket drive system and eliminate drivetrain play.

• Optimized Smooth Operation: The precision-machined needle bearing and structural wash components reduce heat generation and vibration, ensuring a longer operational lifespan for both the saw and the cutting chain.

Critical Fitment & Component Specification Notice

Please Read Before Purchasing: To ensure absolute compatibility with your equipment, please review the exact drivetrain specifications and part numbers below before placing an order.

• Sprocket Tooth Specification: Customer feedback indicates confusion regarding the sprocket configuration. Please note that this kit includes two (2) identical 7-Tooth rim sprockets. It does NOT contain an 8-tooth variant. Both provided sprockets are 7-tooth setups.

• Visual Verification: Please cross-reference your factory part dimensions, shaft diameters, and layout against the technical specifications listed below to ensure an exact fit.

Official Application Matrix

Product Specifications

• Part Type: Chainsaw Clutch Drum, Rim Sprocket, & Clutch Assembly Kit

• Sprocket Configuration: 7-Tooth (Qty: 2)

• Drive Pitch Compatibility: .325 Inch

• Material Composition: Industrial-Grade Carbon Steel & Hardened Alloy

• Condition: 100% Brand New

Package Includes (7-Piece Rebuild Set)

• 1 × Heavy-Duty Clutch Assembly

• 1 × 7-Tooth Clutch Drum (Cup)

• 2 × 7-Tooth Rim Sprockets (Dual 7-T configuration)

• 1 × Structural Clutch Washer

• 1 × Protective Clutch Shield Cover (Guard/Baffle)

• 1 × High-Velocity Needle Bearing

• 1 × Securing E-Clip (Retaining Ring)

Important Mechanical & Installation Notes

• Isolate Engine Power First: Before performing any maintenance on the drivetrain, ensure the chainsaw engine is completely turned off, the safety switch is toggled to the "Stop" position, and the spark plug wire is disconnected to prevent accidental starting.

• Proper Piston Locking: Removing the old clutch assembly requires spinning it off the crankshaft thread (Note: Many chainsaw clutches utilize a reverse/left-hand thread—turn clockwise to loosen). Use a proper piston stop tool or clean nylon rope inside the cylinder head to lock the crankshaft safely without scratching internal components.

• Pre-Lubricate the Needle Bearing: Prior to sliding the new needle bearing onto the crankshaft spindle, apply a light coat of premium high-temperature bearing grease. Running a needle bearing dry will cause immediate frictional overheating and premature drivetrain failure.

• Verify Chain Brake Alignment: Once the new drum and clutch shield are nested into place, manually test the engagement and disengagement of your saw’s mechanical chain brake pad to confirm it clears the outer perimeter of the new clutch cup smoothly.