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Hello Forum, I have the above engine on a zrt mower. This is one of the hard to start engines when hot. I was wanting a little of your knowledge, as to which valve is the one opening to relief some of the compression when starting. The model engine is PS 730-0033. I have the valves...

Can someone comment on the procedure to replace the helper spring on the choke. I can tell that the carb needs to be removed, so what else do I need such as gaskets etc. to make this job, maybe easier. Looks like a lot of work for this spring replacement. Thanks for any information you can...

Hello, just signed on. I live in Marshall, Texas, retired and like to piddle. (I'm real good at it.) I own a Troybuilt ZRT mower, Kohler engine and cuts 50 inches. I have lots of different interest. Like small engines, making things, computers. One of the transaxles on my mower has quit...