good luck, let us know what U find out, I asked that question too.. I have the gaskets and the torgue pattern for putting it back on.. the manual is real vague on the adjustment.. I felt like I was reading something about how to set up your digital 16 track recording station.. takes a lot for granted
My question to you is: Just what is the correct backlash? I couldn't find the figure in my service manual. Usually there is a measurement that you take between the meashing teeth.I couldn't find it so I didn't mess with it. If you get it wrong it can affect the valve timing. I know that this is not a race engine where valve to piston clearance is minimal, but I would like a figure on a critical engine adjustment before messing with it.
Zero backlash on both gears? I don't think that is a good idea. Not with three different gears meshing together that may not be perfectly concentric. It will cause a lot of heat and wear to the mating surfaces. I've never heard of such! Also heat will cause expansion of the gears. If you are at zero where will they expand too. It sounds like a recipe for disaster to me.
You know, I don't think that the backlash is that critical. Some of the guys on the India website, which I visit every day, have thousands of miles on their bikes. I haven't heard one word about measuring backlash from them. Most if not almost all of the mechanics over there have a hard time adjusting timing much less doing anything else which would involve minute measurements. They just don't have the tools to do that. These motorcycles were meant to be daily transport and in India that is what they are used for, and they just don't seem to have trouble with gear backlash at all. I haven't adjusted mine in almost 6000 miles and my bike runs fine. Just my observation of course........Dew.