400 /07 / torque the head down

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johno118
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Current Ride: 07 400
400 /07 / torque the head down

Post by johno118 » Tue Apr 03, 2018 2:46 pm

So just fit a new cam chain new head gasket
Got a haynes, I cannot find torque settings for head bolts
I think these haynes manuals ar sh;.te by the way
Anyone help me plz

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Ralph
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Current Ride: Yamaha X-max 300 300
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Re: 400 /07 / torque the head down

Post by Ralph » Tue Apr 03, 2018 3:19 pm

Tighten the cylinder head bolts and nuts diagonally and
evenly.
• The head bolt tightening must be performed in two stages, initial
and final tightening.
#Cylinder head bolt
Initial tightening:25 N·m (2.5 kgf-m, 18.0 lb-ft)
Final tightening: 41 N·m (4.1 kgf-m, 29.5 lb-ft)
#Cylinder head nut (M8): 25 N·m (2.5 kgf-m, 18.0 lb-ft)
Cylinder head nut (M6): 10 N·m (1.0 kgf-m, 7.0 lb-ft)
Cylinder nut : 10 N·m (1.0 kgf-m, 7.0 lb-ft)
Ralph
Nr Fleetwood
Yamaha X-max 300
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johno118
Posts: 28
Joined: Sun Nov 29, 2015 6:42 pm
Current Ride: 07 400
Re: 400 /07 / torque the head down

Post by johno118 » Tue Apr 03, 2018 5:18 pm

Thats the one Ralf , many thanks bro
All the best jon

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Data
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Re: 400 /07 / torque the head down

Post by Data » Wed Apr 11, 2018 6:37 am

The torque settings for the head bolts are in the Haynes manual. You must have missed them! Easily done.


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