Reply To: 1981 Evinrude 4.5 HP Bolt torque

[JACQUES]

subjective question… if worried just   put some small star  lock washers and thighten down with extra 1/4 turn

 

here is the chatgpt answer to your concern

For the 1981 Evinrude 4.5 HP outboard, the torque specification for the water pump housing bolts is typically around 60 to 80 inch-pounds. That’s roughly 5 to 6.5 foot-pounds, so it’s a light touch—just enough to snug the bolts without cracking the plastic housing, which is a common issue if overtightened.

 

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