Do not forget to re-seal the gearbox with RTV right after you’ve got located the 
right combination. Even though they are called “gaskets”, they won’t seal your gearbox on their personal.
If almost everything seems standard, consider changing the gear-mesh. This is carried out with the mylar “gaskets” that sit among the major gearbox circumstance and the input/output caps. Try out including or taking away some of these spacers until your gears have around one/8″-1/4″ of free of charge engage in. Specialists can buy replacements ($one-2) in various thicknesses, but we advise the swift and soiled technique of chopping your very own out of a sheet of mylar.
“Groaning”, “creaking”, or “popping” all sound type-of related 
in excess of-the-cellphone. The very best issue to do is to disassemble your gearbox and consider a search at the gears and bearings. The situation will typically existing by itself in the way of damaged/missing gear enamel, toasted gears (like that image on our home page), or blown bearings.
My Gearbox is Groaning/Creaking:
This is just how rotary cutter gearbox can be utilised for your advantage.
