SPI/SP1 Recoil Starter Assembly SM-11035 – Ski-Doo 550F (2010-2020)
Updated June 21, 2026
This recoil starter assembly (also called a starter rewind) is the manual pull-start mechanism used on Ski-Doo snowmobiles equipped with the 550F engine. It replaces the factory unit (OEM 420890175) and is sold under the SPI and SP1 brands, with part number SM-11035. The assembly includes the housing, recoil spring, rope, pulley, and pawls, providing a complete bolt-on replacement for the original starter.
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How the Recoil Starter Works
When the operator pulls the starter handle, the rope unwinds from a pulley, rotating a hub that engages pawls against the engine’s flywheel. This spins the engine to start it. A recoil spring inside the housing rewinds the rope after each pull. Over time, the rope can fray or break, the spring can lose tension or snap, and the pawls may stick or wear, preventing reliable starting. This assembly restores full pull-start function.
Vehicle Fitment and Compatibility
This part is designed for Ski-Doo snowmobiles with the 550F engine, including models such as Tundra 550F, Tundra LT 550F, Tundra Sport 550F, Skandic WT 550F, and Skandic Tundra Sport 550F, from model years 2010 through 2020. It directly replaces OEM part number 420890175. Always verify your snowmobile’s year and engine type before ordering.
Common Failure Symptoms and Diagnosis
Typical signs of a failing recoil starter include the rope not retracting fully, a frayed or broken rope, a grinding or slipping sensation when pulling, or the engine not cranking despite a smooth pull. These often indicate a broken recoil spring, worn pawls, or a damaged pulley. Inspect the rope and spring visually; if the rope is intact but the starter doesn’t engage, the pawls or flywheel teeth may be worn.
Installation Notes
Installation is straightforward: remove the old assembly from the engine cover (usually three or four bolts), transfer the starter handle if it is not included with the new assembly, and bolt the new unit in place. Ensure the rope is fully wound and the pawls move freely. No special tools are required, but a shop manual for your specific model is recommended for torque specifications and alignment details.
