How do l take off the starter motor on my zzr 1100 ?

SOURCE: find oilfilter location on kawasaki zzr 1100

Bottom of motor there is about a 31/2" round cover with a bolt through the middle thats the filter you may have to remove the exhaust to get to it on your bike

SOURCE: 1994 ZZR 1100 - for

If you examine the failed plug and check the condition of it. It could be overheating, oil up, carbonize. Not enough information for me to cast an oppinion.
Check your owners manual to see what the plug should run like. If it is overheating, try a harder plug.

SOURCE: my zzr 1100 makes a noise on the cluch side of the

Most likley to be the clutch basket roller bearing worn and allowing the clutch basket to rattle. Could be the alternator chain tensioner needs looking at.

SOURCE: kawasaki 1994 ZZR 1100 d camshaft bolts torque settings

Camshaft cap bolts are 12 N-m