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I've been trying to locate the engine serial number and it is nowhere to be found. I've located the casting number and other non serial numbers on the back of the block, but the location in front of the right head is bare - what gives? Minnesota requires the engine serial number to transfer the titl...

Sooooo - the rocker bolt was super loose - I replaced all the rocker bolts with locking ones and now the engine runs great again, crisis averted almost, while working on the bike I noticed that the frame frame was cracked up by the neck - jeezzzzzzzz

I pulled the valve cover off and found cylinder 7s intake pushrod had popped out from under rocker - is this common for the ZZ4?

Thanks for the reply, I'll let ya know what I find.

Hello all, new to me 1998 Boss Hoss zz4 - bike was running great while I was getting comfortable with the handling on side streets. I took the bike out on the freeway for a 20 mile excursion and noticed the exhaust sounded different on the exit ramp. I get home and noticed bluish grey smoke coming o...