85 kawasaki gpz 900 ninja i need the engin head torc specs & the cam timing marks loaction

Looks like 0.7mm which seems far too narrow to me!

https://bikerrated.com/gear/maintenance/kawasaki-spark-plug-fitment-chart/

GPZ 900 Service Manual doesn't mention it

https://www.manualslib.com/manual/1425138/Kawasaki-Zx900-A-Gpz900r-1984.html?page=25#manual

650 is .032 (32 thou) or 0.9mm

https://www.manualslib.com/manual/824343/Kawasaki-Ninja-650.html?page=110

..

0.15mm on intake and 0.20mm on exhaust

8mm.

Hi the cam chain is automaticaly adjusted on your bike, when the chain rattles it needs replacing or tensioner inspection

You need to take the #1 plug out and make sure the piston is at top dead center. Then make sure that the alignment mark on the timing rotor is pointing at the mark on the engine casing. You will want the cams positioned so that the heels of the lobes are down toward the cam followers. The lobes themselves will kind of point up and away from the cylinder head. Also there should be marks on the cams they need to be level with the top of the cylinder head. You will measure 4 valves on 1 of the cylinders and 2 valves each on 2 others. Then rotate 1 full turn and measure the other four. In any case make sure the heel is down towards the follower and the crankshaft timing mark on the timing rotor is lined up with the mark on the engine case..

Assuming its the same as a 900.
loosen the 2 allen bolts at the rear of the swing arm. loosen the brake lock bolt,so the caliper can slide as well.
Turn the large cams that the axle bolts through to move the wheel back or forward., make sure the adjustment marks line up the same.
It can help to loosen the axle nut first, if you are having trouble getting the left and right adjustments the same.
dont forget to tighten everything up again and replace the axle circlip,

Turn the engine over by using a 17mm socket or spanner on the crank until the no.1 inlet valve goes down & then comes back up; continue turning until the T mark for cylinders 1:4 lines up with the rear mating surface of the 2 crankcases, number 1 cylinder is now at top dead center on the compression stroke.
The cams are marked 117 IN & 117 EX so they don't get mixed up, align the IN & EX marks on each sprocket with the the cylinder head surface so that the IN marks face to the rear & the EX marks face to the front.
Next check the no of roller pins in the cam-chain between the inlet cams IN mark & the Exhaust cams EX marks, make sure that all the slack is taken up on the rear run & that there is none at the front or between the camshafts: There must be 30 pins in between the 2 marks (including the ones next to each mark)
If everything is still the same when you have the camshafts bolted down you are OK

Ride safe
Bike-Doc
Please mark this as very helpful (if it has been!!) - it helps my ratings

Turn the engine over by using a socket on the crank until the T mark lines up, number 1 cylinder is now at top dead center.
The cams are marked 117 in & 117 ex, align these marks with the the cylinder head surface with both facing away from the middle
If they are like that when you have the camshafts bolted down you are OK

Hope this helps (if so please mark as very helpful)

Ride Safe
Bike-Doc