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New to me M that won't start

Farmall M, Super M, 400, 450 & 560 Tractors, 1939-1963
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rnccen
Posts: 5
Joined: Mon Nov 27, 2023 10:42 pm
Zip Code: 78288

New to me M that won't start

Postby rnccen » Mon Nov 27, 2023 10:59 pm

Have an M presently sitting on a trailer turns over but won't start, I had to winch it onto the trailer.

Fuel new good flow.
Carb no leaks, farily clean, good suction at intake
New battery 650CA
12V system (prior owner converted), cleaned ground
new plugs autolite 386 gap .025
Distributor sparks, gap .013,
Plug wires from cap to plugs correct

Here is where I think the timing may be off as when I pulled the plugs loosely put #1 back in and rotate engine to where it's on compression and you can hear the air, the distributor rotor is pointing to where plug 2 wire would be (looking at the end of the cap approx 11 o'clock not where plug 1 wire is at 1 o'clock).

Can anyone opine or perhaps provide some insight?

Thanks in advance.
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Jim Becker
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Re: New to me M that won't start

Postby Jim Becker » Mon Nov 27, 2023 11:10 pm

From your description, it sounds like the distributor has been removed then reinstalled in the wrong place. Try moving the #1 wire to the position the rotor is pointing at. Then place the rest clockwise around the cap in the order 3 - 4 - 2. If that was your problem, this should get it to start.
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Gary Dotson
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Re: New to me M that won't start

Postby Gary Dotson » Tue Nov 28, 2023 8:28 am

Magneto or battery ignition? Point gap: magneto .013”, battery ignition .020”
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staninlowerAL
10+ Years
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Tractors Owned: Cubs: (3)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (2)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
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Re: New to me M that won't start

Postby staninlowerAL » Tue Nov 28, 2023 9:14 am

Gary Dotson wrote:Magneto or battery ignition? Point gap: magneto .013”, battery ignition .020”

If your M has a mag and it functions like the J4 mag on a cub the rotor and pinion gear has to be in time also. JMHO Stan
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
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rnccen
Posts: 5
Joined: Mon Nov 27, 2023 10:42 pm
Zip Code: 78288

Re: New to me M that won't start

Postby rnccen » Tue Nov 28, 2023 11:14 am

Gary Dotson wrote:Magneto or battery ignition? Point gap: magneto .013”, battery ignition .020”


Thank you, was not aware of the difference, it has a battery ignition, so I'll have to adjust the gap also.
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rnccen
Posts: 5
Joined: Mon Nov 27, 2023 10:42 pm
Zip Code: 78288

Re: New to me M that won't start

Postby rnccen » Tue Nov 28, 2023 11:16 am

Jim Becker wrote:From your description, it sounds like the distributor has been removed then reinstalled in the wrong place. Try moving the #1 wire to the position the rotor is pointing at. Then place the rest clockwise around the cap in the order 3 - 4 - 2. If that was your problem, this should get it to start.


Thank you, I'll try that and see what it does.
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rnccen
Posts: 5
Joined: Mon Nov 27, 2023 10:42 pm
Zip Code: 78288

Re: New to me M that won't start

Postby rnccen » Fri Dec 01, 2023 12:03 am

Ok moved the plug wires as noted prior, started with some hesitation, though I noticed that fuel was coming out of the intake and also at the seam where the idle plate is on the carb. I screwed in the main jet screw, did not seem to make much difference regarding the excess fuel into the intake?
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Don McCombs
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Re: New to me M that won't start

Postby Don McCombs » Fri Dec 01, 2023 8:53 am

Take a look at your choke mechanism and linkage. Make sure it is opening and closing properly. A little lubrication may help.
Don McCombs
MD, Deep Creek Lake

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