I recently got this strimmer but can not get it to run right. It has an L and H screw which are adjustable and change the running of the engine. But when the throttle is opened or motor is under load she'll cut out. I think these screws are something to do with the air fuel mix but just don't know. Any help would be fabulous. Marunaka power reaper with mitsubishi T50 engine

Jakers077, April 2009

I hope this helps - but I've never heard of this particular machine....anyway, the screw marked L is for low speed running - that is, the engine running at tickover. The screw marked H is for high speed running - that is, at maximum speed. GENERALLY both screws are set at about 1 turn out from fully in. If the engine will run slowly, turn screw L a little bit until the engine speed tries to pick up. With the engine running fast, dont adjust screw H unless the engine starts to splutter a bit - if it does, screw H in a fraction. Make sure that the air cleaner is clean first though.

John, April 2009