Suzuki 2 Strokes

I lent my photo-copied workshop book and it came back with pages missing (i have ordered a clymer) In the mean time i would like to check my valve clearance and then the timming with a strobe light,the previous owner rebuilt the engine and i have just clocked up 500ks.all i need is the tappet clearance exhaust/inlet 4-valves per cyl-twin swirl combustion chamber...ken

Ken, this is a 2-stroke forum. If it's newer than a 77, most of us have no idea. Go to the GS Resources forum and you will get an answer in short order. It's easy to find that forum. Just Goggle it.