[Farmall] gasoline/spark plugs

[E. John Puckett]

The set I pulled out yesterday showed very little sign of being black, 
bu the tractor would no longer start, after about 5 or 10 hours of use.  
Both my cubs work for a living, one grades roads, etc. the one I have 
the most trouble with is my mowing tractor that runs a 4 foot flail 
usually 2 hours or so at a time.  both are magneto powered and will 
throw a blue spark 3/8 inch on a spark tester.

CAMEROL78 at aol.com wrote:

>I use Champion d18y or autolite 45's and they seem to work well. You might  
>want to check your air cleaner or also see if your choke is not partially  
>closed. Black plugs are a sign of a rich condition. i've also found if you work  
>the engine hard they clean the plugs better. Loafing the engine doesn't build  
>enough heat in the cylinder to burn the fuel very well and can cause fouling.  
>hope this helps 
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-- 
 John
another one of them
*.?-!.* cub owners