Removing the rocker shafts 400/4

[McCabe-Thiele (Ted)]

My manual states a suitable 10 mm should be used to withdraw the rocker shafts.

Firstly are all 10mm bolts the same thread or is there a fine & coarse option? I have as yet to buy a selection of useful metric bolts so any suggestion as to suitable length is welcome.

[Bryanj]

There are 3 different pitches on 10 mmbut that sounds a bit bit are you sure its not 6mm (10mm spanner)

[McCabe-Thiele (Ted)]

I'm going off the Haynes Manual kit shows the 550 as 6mm.

[McCabe-Thiele (Ted)]

if its a 400/4 any m10 bolt out the engine will fit i use them every time
[/quote

OK but as I don't understand metric is that a fine thread?

[McCabe-Thiele (Ted)]

I've removed the first on by putting a close sized bolt in the hole and pushing it to one side so the threads touch - it pulled out with no effort!

[ttr400]

Bolt size is M10x1.25

Kevin