GT22 Crankshaft Replacement OS28202000 for O.S. Engine  [OS28202000]

GT22 Crankshaft Overview

This crankshaft is supplied as a direct replacement for the GT22 range of O.S. Engine glow engines, intended specifically for RC-scale applications. The section below outlines fitment checks, clear installation steps for a hobby workshop, and how a correctly matched crankshaft supports engine balance and steady tuning.

Compatibility: the part name indicates fitment with GT22 engines; confirm your engine model code before ordering and preserve original bearing spacing and end-play tolerances when reassembling. Make sure mating surfaces are clean and free from old gasket material or debris prior to fitting.

Installation notes: remove the engine from the model if required to access the crankcase, install the crankshaft following the engine service manual sequence, verify proper bearing seating and oil passage alignment, and perform a static balance check where feasible. Final running checks should include confirming idle stability and a smooth throttle response across low to mid throttle settings.

Tuning role: the crankshaft affects rotating mass and dynamic balance; a correctly fitted crankshaft helps maintain consistent ignition timing and reduces vibration that can upset needle settings and tuned exhaust performance. When diagnosing erratic running, inspect crankshaft fit and bearing condition early in the process.

This crankshaft is intended for straightforward replacement and maintenance on GT22 engines, supporting steady running and repeatable tuning when installed and checked to correct tolerances.