Spark plug for 1976 Evinrude 25 hp

[Lindsey]

I have a 1976 Evinrude 25 horse outboard, model 25653E
I want to change the spark plugs but I'm finding conflicting information about which plug is the correct one to use.
My Evinrude service manual says that the plug should be a Champion J4J.
Most of the marine spark plug web sites that I've visited recommend a Champion J8C.
As I understand it, the J8 plug is two heat ranges hotter than the J4 plug. I don't want to hurt my engine by using too hot a plug.
The plugs that are in the engine now are old rusty Delco plugs.
Any thoughts about where I can find the current best information about which spark plug to use in my outboard?
Thanks

Lindsey

[ih772]

I'd go with what the service manual says.

[The Whale]

http://www.dixiemarinesales.com/images/J4Clrg.jpg
CHA-J4C Champion Spark Plug Champion$2.99 $2.24(Savings: $0.75) http://www.dixiemarinesales.com/images/buttons/email_friend.jpg (javascript:__doPostBack('ProductDetail11$btnEMail Friend',''))
-Spark Plug Quick Reference Guide
- Champion Spark Plugs for Johnson and Evinrude Outboard Motors
- Johnson and Evinrude recommend Champion Brand Spark Plugs http://server.iad.liveperson.net/hc/39735643/?cmd=repstate&site=39735643&&ver=1&imageUrl=http://www.dixiemarinesales.com/liveperson (http://server.iad.liveperson.net/hc/39735643/?cmd=file&file=visitorWantsToChat&site=39735643&byhref=1&imageUrl=http://www.dixiemarinesales.com/liveperson) Live chat by LivePerson (http://www.liveperson.com/)
Johnson and Evinrude Champion Spark Plugs
HP
Year
Spark Plug
Gap
View PlugTwo Stroke
18 JET (25 HP)
1995-2001
QL77JC4
L78V
.030
View Plug
(http://www.dixiemarinesales.com/detail.aspx?ID=441)View Plug (http://www.dixiemarinesales.com/detail.aspx?ID=468)
20
1966-1973
J4C
.030
View Plug (http://www.dixiemarinesales.com/detail.aspx?ID=438)
25
1952-1955
J4C
.030
View Plug (http://www.dixiemarinesales.com/detail.aspx?ID=438)
25
1969-1976
J4C
.030
View Plug (http://www.dixiemarinesales.com/detail.aspx?ID=438)
20 / 25 / 28 / 30 / 35 (2-cyl)
1977-2005
QL77JC4
QL82C
L78V
.030
View Plug
(http://www.dixiemarinesales.com/detail.aspx?ID=441)View Plug
(http://www.dixiemarinesales.com/detail.aspx?ID=436)View Plug (http://www.dixiemarinesales.com/detail.aspx?ID=468)