Rear axle/hub assembly
It seems, a couple weeks ago, while on a ride through Walla Walla, I had a new rear tire, chain and sprockets installed. I think the mechanic (for lack of a better term) did not reassemble the rear hub properly. Last night I was going to adjust my chain. I had put about 1400-1500 miles on the bike since the work had been done to it and I figured that the chain had 'broken-in' and gone through that initial stretch. I pulled the pin out of the rear axle and proceeded to loosen the rear axle nut. Strangely enough, it was already loose. This in-and-of-itself was rather upsetting though I continued to adjust the chain tensioners and when I was satisfied with the chain's tension, I torqued the axle nut to the prescribed 72.5 ft/lbs. But now the wheel wouldn't spin! I also noticed that the hole for the cotter pin was beyond the outer edge of the rear axle castle nut. I loosened up the axle nut and the wheel spun freely again. I rode the bike to the local Suzuki dealship (it seemed safe enough, after all, I already put 1500 miles on it like this and I wasn't dead yet). The mechanic and I looked at the exploded view of the rear components and we believe that the "rear sprocket drum retainer" was not refitted properly (or at all). He's going to have to order the part and possibly some bearings and an axle as the whole assembly seems loose and is making noise. He suspected that there was too great of side-preload on the bearings.
I guess i really don't know why the hub would need to be disassembled to fit a new sprocket and tire. Is that required to get the wheel on the balancer? There was fresh grease in the hub (but it has sealed bearings). Anyone have a clue?