do i have the right spark plug?

D

dmorray

Cadet
Joined
Jul 29, 2009
Messages
17
well, thanks to all the great advice i've recieved on this forum, i've finally got my motor put back together and it's running better than ever!!! it's a 1976 25 hp evinrude 2-stroke outboard. i do have one more question for anyone who might know the answer,....(im not one to fix something that's not broken) but i was mainly just curious, i've got a set of ac delco spark plugs on the motor,..# r45, and i was wondering if this was a compatible plug, or if for some reason it may damage the motor in the long run? like i said,... its running great right now, i set the gap to the service manual specs,....but i was curious to make sure!!!

thanks in advance for any help!!
 
Bifflefan

Bifflefan

Commander
Joined
May 27, 2009
Messages
2,933
Re: do i have the right spark plug?

id use the marine plugs as they are designed to run with the oil.
I cant remember the numbers tho. has a 77 in it.
Look at the BRP wed site and it should be there, somewhere...
 
Bifflefan

Bifflefan

Commander
Joined
May 27, 2009
Messages
2,933
Re: do i have the right spark plug?

looks like the right plug is a NGK B6S or Champian RJ8C or compairable.
 
Vic.S

Vic.S

Rear Admiral
Joined
May 4, 2004
Messages
4,719
Re: do i have the right spark plug?

Current recommendation is Champion J4C gapped at 0.030"

(Source Shop.evinrude.com official parts list and also Contiuouswave.com)


(The NGK equivalent is B7S)

I cannot see RJ8C listed for any Johnson/Evinrude motor!
 
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