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How can I fix my McCullock TM 250 petrol engine?

McCulloch TM 250 petrol engine strimmer. The petrol engine starts but, after running it wants to cut out if I let the accelerator off. Why does the engine want to cut off if the accelerator is not pressed?

Neil Playne
June 2007

McCulloch Garden Tools, Grass Trimmers Petrol Engine Running

1: Is your idle screw set high enough.
2: I had a problem with the cylinder barrel coming away from the crankcase which affected carburation.
The carb relies on crankcase pressure to function correctly. To check this, hold the back of the strimmer and see if you can move the air filter forwards and backwards. You should have no movement.

Binnon
August 2007

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How can I fix my McCullock TM 250 petrol engine?

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How can I fix my McCullock TM 250 petrol engine?

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