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Headbolt tension?

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  • Headbolt tension?

    Can someone tell me, do Head bolt tensions vary motor to motor? Mine is 1989 70hp Yam. Also does the exhaust cover bolts require specific tension also?

  • #2
    Head bolts torque to 23 ft lbs
    Exhaust cover bolts 5.6 ft lbs
    Regards
    Boats.net
    Yamaha Outboard Parts

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