Head bolts torque for yamaha yfm 80 - Yamaha Motorcycles

SOURCE: what is the 98 isuzu rodeo head bolt torque

joyce, there are different specs for sohc and dohc engines. my advice is to get a Haynes manual from the auto parts store.

doug

SOURCE: Need torque wrench settings for cylinder head bolts

try here http://www.manualz.info/

hope this helps

SOURCE: head bolts torque settings

According to my haynes manual for G-S reg, 1989-1998 it goes as follows,
Stage 1:- Tighten all bolts by hand until bolt heads just contact cyl. head.
Stage 2:-Tighten all bolts to 40Nm or 30lb ft.
Stage 3:-Angle tighten all bolts a further 60 degrees.
Stage 4:-Angle tighten all bolts again a further 60 degrees.
Stage 5:- M12 x 140mm bolts ONLY angle tighten a further 20 degrees.
Hope this helps everyone, sorry it seems longwinded but that is how it's written in the manual.

SOURCE: Head bolt torque specs needed for 96 tbird 3.8

Head bolts are torque to yeild so you MUST use new bolts.
Tighten cylinder head retaining bolts in numerical sequence in three steps as follows:

1. 20 Nm (15 lb-ft).

1. 40 Nm (30 lb-ft).

1. 50 Nm (37 lb-ft)

• Tighten to 40-50 Nm (30-37 lb-ft).
• Rotate an additional 175-185 degrees.
• Go to next bolt in sequence.

• Tighten to 20-30 Nm (15-22 lb-ft).
• Rotate an additional 175-185 degrees.
• Go to next bolt in sequence.

SOURCE: head bolt torque

Hi bengriffith1
You can download a copy of the engine manual from here
It has all the info you need. Any problems with the download just let me know
regards robotek