![]() Is it normal that the governor is keeping the throttle open so much? If not, what’s supposed to happen! The carb is completely factory set with no mixture adjustment screws. If I disconnect the spring from the governor and close the throttle it starts instantly, however the engine then idles at too slow a speed to mow the grass without stalling out as soon as you mow grass that’s anything more than a few inches long. With the engine off, the throttle is half open with the tension from the governor. The issue appears to be with the governor / throttle setting. Once it’s running, it runs fine but even after its warmed up, if I stop it then it takes me just as long to start it again. It’s had a new plug, gapped as per the manual at 0.8mm, confirmed a good spark and fuel is freely getting to the carburettor bowl. I have made a small video which I have linked to.īasically, it’ll take me a good five minutes of trying to start it to get it running, and that’s only if I over prime the engine so that petrol starts leaking out of the air filter housing. It’s causing me issues when trying to start it and I wonder if anybody has any idea what the issue could be. ![]() It is a Challenge Xtreme XSZ40E with a Chinese Sumec S475 engine. ![]() I have acquired a lawnmower from my deceased grandad. ![]()
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May 2023
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