evinrude 1980 9.9 spark plug type and gap

[ISLANDS19]

What are the better spark plugs to put on it, and is .030 the right gap?

 

[Chinewalker]

Re: evinrude 1980 9.9 spark plug type and gap

Champion L77JC4 at .030".<br /><br />Don't let Paul Martin know y'all are still using SAE out on the East Coast - he'll send the Mounties after ya! <br /><br />- Scott

 

[ISLANDS19]

Re: evinrude 1980 9.9 spark plug type and gap

Thank's<br />The front knob is for fast? or slow idle

 

[Chinewalker]

Re: evinrude 1980 9.9 spark plug type and gap

The front knob is for idle speed adjustment. If you feel it needs to be adjusted, it should never be more than two full turns from lightly seated closed (knob must come off to close, assuming the tab is still on it). Most seem happy somewhere between 1 and 1.5 turns from closed...<br />- Scott