O.S. Engine GF40 CRANKCASE OS49401000  [OS49401000]

Product Summary: GF40 Crankcase

This crankcase is described as the specified replacement component for GF40 engine models offered under the O.S. Engine name. The summary emphasises correct fit, basic assembly guidance, and the housing's role in upkeep and alignment, avoiding any unsupported performance assertions.

Compatibility is limited to GF40-designated units as indicated by the name, and the item is intended for use with hobby model engines. Fit this replacement when removing a worn or damaged case during normal service or prior to carrying out a detailed inspection or tuning session.

Fitting notes: inspect mating surfaces and bearing seats, transfer serviceable bearings and seals from the old case where applicable, and ensure correct alignment during reassembly to prevent binding. The crankcase forms the structural shell for internal components and primarily affects sealing and alignment rather than tuning performance directly.

For enthusiasts maintaining or repairing GF40 O.S. engines, this crankcase provides the required housing replacement; adhere to standard engine service practice when fitting and running the engine after installation.