O.S. Engine OS29067010 Cover Plate for 91SZ-H Engine Crankcase  [OS29067010]

Crankcase Cover Plate

This cover plate is a direct replacement accessory listed as O.S. Engine OS29067010 and intended for use with engines that reference the 91SZ-H cover designation. It is presented as an RC-scale engine crankcase component, focused on restoring enclosure integrity and alignment where the original plate has worn or been removed for service.

Installation is straightforward for experienced hobby technicians: remove the engine mounting screws securing the existing cover, verify mating surfaces are clean, position the replacement plate and torque fasteners evenly to maintain crankcase alignment. The component supports routine maintenance tasks such as seal inspection and reassembly after piston or bearing work.

In tuning and setup the cover plate helps maintain consistent crankcase geometry which contributes to reliable compression and predictable engine behavior during bench tuning. Treat this part as a service replacement in the RC engine toolkit rather than an upgrade that changes core engine specifications.