05-01-12, 03:14 PM
The rattle may be due to the tensioner having become temporarily "stuck"... they seem prone to this on the FZS600 but aside from a bit of noise it doesn't appear to be a problem. It usually clears after a bit (a thousand miles or so).
The mechanic does sound a bit blasé, but valve clearances don't alter significantly in my experience. When I swapped my original engine out at 185,000km (piston slap was making it sound like an elderly tractor by then) they still measured well within specification. I did check the replacement engine before installing it, but don't intend to bother again.
If second gear engages cleanly there probably isn't much else to worry about as far as the engine is concerned.
The mechanic does sound a bit blasé, but valve clearances don't alter significantly in my experience. When I swapped my original engine out at 185,000km (piston slap was making it sound like an elderly tractor by then) they still measured well within specification. I did check the replacement engine before installing it, but don't intend to bother again.
If second gear engages cleanly there probably isn't much else to worry about as far as the engine is concerned.