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Correct torque spec for cylinder head bolts - 250 EFI
1B043974 Port
1B105624 Stbd
2005-ish 250EFI
The service manual I have access to shows 2 different specs in 2 different places... They both agree in tightening in stages (10 lb feet in the correct pattern, then 20, etc), but for final torque, One says 20 lb feet plus 90 degrees, the other says 30 lb feet plus 90 degrees. Which is actually Correct?
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Mercury 3L/4 Stroke/Verado Moderator
Final two stages:
- 20 lbs/ft
- Additional 90 degrees
Always use NEW head bolts.
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Thanks Don. I have 20 new OEM bolts in hand. Appreciate the info!