R plug with magneto

[55 50 Ron]

What are your preferences for spark plugs in an "R" wirh magneto?

 

[Ill John]

Autolite

 

[Rich'sToys]

Autolite

Any specific number??

 

[53ZBU]

I've been running Autolite 295

 

[55 50 Ron]

295 is what I used. Needs 14 mm thread, 13/16 inch hex for spark plug wrench and 1/2 inch reach. I had never paid much attention to "reach" before so I studied that a bit. If I understood correctly, reach is the length of the 14 mm thread.

Anyway, this tractor runs nicely now with the new 295s.

 

[rustred]

295 is what I used. Needs 14 mm thread, 13/16 inch hex for spark plug wrench and 1/2 inch reach. I had never paid much attention to "reach" before so I studied that a bit. If I understood correctly, reach is the length of the 14 mm thread.

Anyway, this tractor runs nicely now with the new 295s.

Reach is the length of the electrode. Such as say a champion D16 vs the long reach hotter plug D 15 Y. Hope I remembered that number correctly.