Will not forget to re-seal the gearbox with RTV right after you’ve got found the right blend. Even though they are called “gaskets”, they will not likely seal your gearbox on their possess.
If every little thing seems to be typical, try out adjusting the gear-mesh. This is accomplished with the mylar “gaskets” that sit 
among the principal gearbox scenario and the input/output caps. Try out including or removing some of these spacers till your gears have about 1/8″-1/4″ of free of charge perform. Pros can purchase replacements ($1-two) in various thicknesses, but we suggest the swift and soiled technique of slicing your possess out of a sheet of mylar.
“Groaning”, “creaking”, or “popping” all audio kind-of equivalent in excess of-the-cellphone. The best thing to do is to disassemble your gearbox and consider a seem at the gears and bearings. The problem will usually present by itself in the way of damaged/lacking gear teeth, toasted gears (like that photograph on our property webpage), or blown bearings.
My Gearbox is Groaning/Creaking:
Fortunate for you, we did a compose-up on our site. It is named “How to alter the enter shaft on your rotary cutter gearbox”.
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