Spark Plugs for M5 gas

John Olynyk · Oct 30, 2018

what spark plugs does the M5 take? The tractor will be used mainly in the winter if it makes any difference.
thanks John

shinnery · Oct 31, 2018

According to my Repair Catalog (R-2020B) a M5 should use a No.5 Comm (Or D9) or No.8 Comm. (or D16). I think the D9 or D16 numbers are Champions not sure on the Comm. numbers. Maybe this will give you a starting point.

John Olynyk · Oct 31, 2018

Thank you very much for your reply. It has D16 in it. but I don't have a manual for it yet, but one is
ordered.. It seems a lot prefer Autolite over Champion..

molinegb · Oct 31, 2018

Autolite plugs are better in a MM.

John Olynyk · Oct 31, 2018

(quoted from post at 14:09:53 10/31/18) Autolite plugs are better in a MM.

Would you per chance have the Autolite number for the plug?
thanks, John

mmfan55 · Oct 31, 2018

The D16 ( that number has been
changed. Don't remember new number)
is a good general use plug in Moline
tractors. I have had much better
service from Champion plugs than any
other. Autolite was worst for going
dead. Had to carry an extra box of
Autolites to the pulls so I could
replace dead plug between pulls. Got
put out with that in a hurry and went
back to Champion.

MMDEL · Oct 31, 2018

Most MM tractors came new with AC plugs.
MMDEL

rvirgil_KS · Oct 31, 2018

Autolite 386 (Resistor) 3116 Non Resistor Gap .025

John Olynyk · Oct 31, 2018

thanks. picked up 4 D16's today.

Cowpuncher · Nov 7, 2018

(quoted from post at 10:36:29 10/31/18) Thank you very much for your reply. It has D16 in it. but I don't have a manual for it yet, but one is
ordered.. It seems a lot prefer Autolite over Champion..

According to MM information -- for LP engines the recommendation was Champion D-!4 plugs --- Champion was the plugs originally that we put in the M-5's when I worked at MM in 1963.. Autolite Plugs are much better than the Champions are NOW. I have switched to NKG "AB-6" (#2910) for both of my M-5's. For LP all plugs should be gaped at .014-.016; as opposed to the gasoline engine
@.022-.024. I hope this helps

John Olynyk · Nov 8, 2018

(quoted from post at 03:29:29 11/08/18)

(quoted from post at 10:36:29 10/31/18) Thank you very much for your reply. It has D16 in it. but I don't have a manual for it yet, but one is
ordered.. It seems a lot prefer Autolite over Champion..

Click to expand...

According to MM information -- for LP engines the recommendation was Champion D-!4 plugs --- Champion was the plugs originally that we put in the M-5's when I worked at MM in 1963.. Autolite Plugs are much better than the Champions are NOW. I have switched to NKG "AB-6" (#2910) for both of my M-5's. For LP all plugs should be gaped at .014-.016; as opposed to the gasoline engine
@.022-.024. I hope this helps

Thank You. That helps. I can't find Autolite here, but will pick some up next time I go to the bigger city.

Spark Plugs for M5 gas

John Olynyk

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shinnery

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John Olynyk

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molinegb

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John Olynyk

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mmfan55

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MMDEL

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rvirgil_KS

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John Olynyk

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Cowpuncher

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John Olynyk

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