GF40 Replacement Crankcase OS49401000 by O.S. Engine  [OS49401000]

Overview: GF40 Crankcase

This component serves as the replacement crankcase designated for GF40 engine models sold under the O.S. Engine name. The text highlights correct fit, simple installation cues, and the housing's role in maintenance tasks without making unverified performance promises.

The part is compatible with GF40-identified units as shown in the product title and is designed for hobby-scale model engines. Use it when replacing a damaged case during standard service or when preparing the engine for inspection and adjustment.

Installation notes: check contact faces and mating surfaces before assembly, move over bearings and seals from the original housing as required, and confirm shaft alignment to prevent binding. The crankcase provides the structural enclosure for internals and primarily impacts sealing and alignment rather than tuning itself.

For hobbyists maintaining GF40 O.S. engines, this crankcase meets the needs for a housing replacement; adhere to normal engine service checks when installing and validating operation.