400 /07 / torque the head down

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johno118
Posts: 32
Joined: Sun Nov 29, 2015 6:42 pm
Current Ride: 07 400

400 /07 / torque the head down

Post by johno118 »

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
Posts: 965
Joined: Fri Jun 01, 2012 7:20 am
Current Ride: Yamaha X-max 300 300
Location: Near Fleetwood

Re: 400 /07 / torque the head down

Post by Ralph »

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
Ariel NG 350
AJS Model 18S.

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johno118
Posts: 32
Joined: Sun Nov 29, 2015 6:42 pm
Current Ride: 07 400

Re: 400 /07 / torque the head down

Post by johno118 »

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

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Data
Benefactor
Posts: 3216
Joined: Wed Feb 08, 2012 6:43 am
Current Ride: 2016 Vespa GTS300ie abs asr
Location: North Essex, UK

Re: 400 /07 / torque the head down

Post by Data »

The torque settings for the head bolts are in the Haynes manual. You must have missed them! Easily done.
Probably not ugly enough for the 'Ugly Bunch'! :lol:

Been riding for 54 years & owned too many bikes to list here...

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