sib
Cruisin' Guzzisti
The exhaust header nuts are actually M6 and, although the manual doesn't state that they should be tightened, you should check them. Mine were loose at the first servicing, the spec torque is 10 Nm. As for the head nuts, the smaller, upper one (M8) should be torqued to 28 Nm and the other four (M10) to 42 Nm.I believe you're referring to the exhaust bolts here. No. You need to re-torque the head bolts (only accessible when the valve cover is off). Then you will need to check your valve clearance again.