OLEO-MAC GSH400 Chainsaw Primer Bulb & Pipe / Line

Primer bulb and pipe / line fits Oleo-Mac GSH400 and many other chainsaws. Pressing the primer bulb pumps extra fuel through the pipe/line into the carburettor, pre-filling the fuel circuit and purging air before a cold start so the engine catches faster on the first few pulls. When the bulb perishes, cracks, or the pipe splits or comes loose, priming no longer builds pressure correctly, allowing air back into the circuit and leaving the carburettor without that pre-filled charge — typically showing up as harder cold starting or needing several extra pulls before the engine catches. Fitting a replacement bulb and pipe restores effective priming.

Fits specified Oleo-Mac models:

• Oleo-Mac GSH400