samwise 58, are you sure that M's were dual fuel? I was (am) pretty sure that they were straight gas engines. I did have an old WD series once that was started on gas and then switched to kerosene but never saw a smaller trctor like the H or M that ran that way.


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Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain