Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Hi, my name is***** will be assisting you.
I would recommend cleaning the carburetor jets before I started making any kind of adjustments. Since you say the engine dies when moved below half throttle it sounds like you aren't getting enough fuel through the idle circuit to keep the engine running which could also affect the high speed or full throttle run.
You could adjust the governor spring tension to increase rpm on the engine but it is not going to help your engine stalling at half throttle or less. I think that the jet is still partially stopped up which is causing your stalling problem and will also create issues with full throttle running.
There is a little tag or linkage that can be bent to increase tension on the governor spring however on this machine you will need to remove the fuel tank to get to it in order to make any adjustment. You will be able to identify it easily, it will have the governor spring attached to it.
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