Originally Posted by
Kevcules
Hello again
I'm checking the valve clearances on my 87 Yamaha FZ 600 and am getting confused with what I see in the manual and just want to be sure...
1. Why does the manual give an example of a valve being loose , then re-shimming to get within a tighter spec, isn't it the opposite? These valves get tight don't they??
2. Why does the manual say I have to line up the "T" with the "upper" pick up coil when I only have a lower one? I lined up the "t" with it and it seemed to make the cam lobes be properly positioned.
3. Are these the actual valve specs for this bike, the tolerance seems small?
Intake .11 mm to .15 mm ( .004" to .0059" )
Exaust .16 mm to .20 mm (.006" to .0079" )
I'm going to have to get a better set of gauges because almost all the valves are set at ... .127 mm will not fit except for one exaust valve where .178 won't fit in .