Reply To: Muncie 1B39 spark plug type

[HARRY D. NICHOLSON]

My 1961 Champion chart lists a Champion J8J (same as J8C) for a Neptune 1A39 (1.5HP) which should be the same motor as model 1B39.  Oil mix shows 1 pint per gal gas, plug gap .025

1 user thanked author for this post.

Frank Cornine