my mower will idle roughly but not rev , starts ok with normal priming any idears ......

bob, August 2008

Hi, its a quick fix. Just check the springs at the front that go to the carb. What I did was remove the smaller spring just leaving the throttle return spring in place. It throttles up high and wil then settle when you start and should then be okay.
It may be that the front bracket the springs attach too have been bent when mowing near a tree or something.

john, September 2008

This could be a symptom of the throttle govenor bracket at the front of the engine becoming bent back whilst using to mow under bushes or trees. Will need adjusting forward to increase engine speed. Black smoke and lumpy running is a symptom of a worn diaphragm.

pleasant, August 2008

just done mine same problem ..new diaphragm runs better than new £1.90 plus vat an its a good un ..

ted, August 2008