Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
The hydrostat could be low on oil, but there is no check plug. All you can do is add a small amount of fluid 15W50 engine oil, through the plug on the top of the transmission. # 13 in the link below.
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