Yes you should. Most use that plug with their tractor regardless of voltage, while other use the Champion H12 (512 on box). I have two 8ns and I use both. I normally flip a coin, but some, maybe most only use the AL 437. The plugs burn hotter than the older recommended sets. Gap at .025.
 
According to what I read, most people use the 437 plugs.Having said that,I found some H-10c plugs and after 4 years +or- they still start easily,run good pull good.I have heard that they are no good,but I was just following the manual. I will use the set I bought at new Holland with points,cond,rotor,cap,and plugs,437s if anything goes out.all of that has 4+ years on it.---lha
 
My 600 would not run with a new set of H10.Plug s gas fouling was a big problem.I also found the tractor can foul plugs when left to idle to long.If you check the catalogs they are selling H12 or 437.The H10 is history.
 

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