[AT] spark plugs

[Tom]

Cecil E Monson wrote:
> 
>         Does anyone know what spark plug is supposed to be used in
> a John Deere 420 engine?  I am still trying to get my 420 started
> and am running out of ideas. The plugs in it have been in there a
> while and are RJ12-C's I believe. They might not be the right plugs
> for this engine used for light duty. I thought the proper plugs would
> be listed in the manuals I have for this tractor but all it says is
> they are "14 mm" plugs.
> 
> Cecil
> --
> The nicest thing about telling the truth is you never have to wonder
> what you said.
> 
> Cecil E Monson
> Lucille Hand-Monson
> Mountainville, New York   Just a little east of the North Pole
> 
> Allis Chalmers tractors and equipment
> 
> Free advice

My listing gives H10C..

Tom