Spark plug for 1964 9.5 Johnson

[sambob]

What spark plug should a 1964 9.5hp Johnson outboard use? It has 2 Champions RJ12C in it. Are they the correct ones to use? Also, where can I buy a carburetor kit for this engine.

 

[ezeke]

Re: Spark plug for 1964 9.5 Johnson

Champion J4C or J4J. Here's the link:

http://www.boatsetup.com/SparkPlugChart.pdf

The kit they sell here is OK, call first though and make sure it has a float in it. Otherwise get one from your local dealer. The floats are still cork and they don't last forever.

 

[shammer49]

Re: Spark plug for 1964 9.5 Johnson

how do you check for spark?

 

[31trojan]

Re: Spark plug for 1964 9.5 Johnson

pull both plugs from engine. put the wire back on the plug . hold the body of the plug,the hex part, onto a good ground. have someone pull the starter rope and you should see the spark. you wont get shocked while holding the plug.

 

[Vic.S]

Re: Spark plug for 1964 9.5 Johnson

But to really test you need to see it jump 3/8" from the lead to ground. Even a week spark will jump 30 or 40 thou across the plug .

A spark tester would be the best way.