OLEO-MAC GSH 400 Chainsaw Carburettor

Carburettor fits Oleo-Mac GSH400 and many other chainsaws. The carburettor meters and mixes fuel with intake air in the precise ratio the engine needs across idle, acceleration and full-throttle running, using its internal jets, diaphragms and needle valve to respond to changes in throttle position and engine demand. As a carburettor ages, its diaphragms perish, jets clog with fuel residue, or internal gaskets harden, causing erratic idling, poor throttle response, hard starting, or the engine flooding or stalling unpredictably. Fitting a replacement carburettor restores accurate fuel metering across the full rev range.

Fits specified Oleo-Mac models:

• Oleo-Mac GSH400