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Farmall & IHC Tractors Discussion Forum
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M stuff

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eshoreboy

04-03-2007 18:25:01




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I just bought an M and when it starts up there is a little bit of white/blue smoke for about 3 sec. and then when you put it in road gear and the throttle up its blows a little bit of black somke i guess this is from being rich is either of these things a problem? Also is it ok to run a m in high gear alot, and keep putting it in(stoping and starting more than usual) or is this bad seince it takes a little from the motor to get up to speed. One more thing how much oil does an M take in the engine,
Thanks for all the help.

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john d

04-04-2007 07:12:57




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
Listen to Bob M's advice (below) on learning to double-clutch the transmission.

Be aware that this practice may take a while to perfect, and that slight variations between tractors (including the viscosity of the rear end lube) will affect your success. I've got a '49 M that I can double clutch into 5th, but nearly as smoothly as my Dad could. I also have a 52 SM that is a breeze to double clutch. I've actually shifted it 1-2-3-4-5 pulling a loaded wagon just to prove to the guy that farms my place I could do it. His comment: "This thing shifts better than my car!"

Find a slight downhill grade and practice.

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NDS

04-04-2007 09:36:27




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 Re: M stuff in reply to john d, 04-04-2007 07:12:57  
Back when we ran Ms FOR REAL I saw a lot more with 5th gear ground off than I saw with premature clutch problems.



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Roger Mills

04-04-2007 06:48:15




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
The little bit of blue could just be comeing in around the intake valve stems-high vacuum at cranking and no stem seals-not a big problem unless it gets worse. A little bit of black smoke is a slight rich condition and unless it fouls a plug its not much of a problem either-better than too lean which heats up the valves. The trick of double clutching is timing what you do so that shifting does NOT clash the gear teeth. The sequence posted was almost correct and everyone is right-you cannot do it with a load or uphill. Here is how it is done on flat ground--light throttle in 3rd or 4th, get rolling, then clutch in-throttle to idle-shift to neutral-clutch out-clutch in quickly,(missing step),-then shift to next higher gear and clutch out-open throttle. The trick is to time the shift to next higher gear so the tranny gears do not clash. You will probably need to wait longer on the last part than you think-don't force the shifter. When you get it right it will just click in.

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Andy Motteberg

04-03-2007 20:58:07




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
You may need your carburetor adjusted or rebuilt to get rid of the smoke problems, if not the carburetor, you may need some engine work done. Your M should hold 6 quarts of oil. Andy.



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eshoreboy

04-03-2007 18:43:58




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
i did that about 6-8 times today is my clutch ok still...if it was good before?



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Ron in Nebr

04-04-2007 06:45:24




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:43:58  
Your clutch will let ya know when it's "not OK" anymore.



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NDS

04-04-2007 06:04:44




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:43:58  
Starting in fifth without load on level firm ground is no harder on clutch than starting in third with plow in ground. The secret of not harming clutch is to learn to get underway wthout slipping clutch, this takes some practice.



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Andy Martin

04-04-2007 05:36:03




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:43:58  
You can start out in fifth with no implement if you are good on the clutch and don't slip it much. I regularly drive a tractor alone starting in fifth but when you get to where you can start in fourth and not grind the gears to fifth you'll like that better.



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Janicholson

04-03-2007 18:39:30




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
Do not start in fifth, Use fourth then double clutch, or slow shift with a bit of grind into fifth while movine as fast as it will go in 4th. It will ruin the clutch the other way Pronto. JimN



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eshoreboy

04-03-2007 18:38:13




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
sooo...do you put er in 4th then shift into 5th real quick?



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Bob M.

04-03-2007 18:55:31




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:38:13  
NO, NO, NO!! You'll be slowly tearing up your 5th gear you do!

----

Better to double clutch it from 4 to 5 as follows:

Get the tractor rolling at full throttle in 4th. Now all at once step on the clutch, move the throttle to "idle" and slip the shifter into neutral. As the engine finishes coasting down, release then step on the clutch again as fast as possible. Now immediately slip the gear lever into 5th, then release the clutch and open the throttle again.

If you time it right it will shift from 4th to 5th with no gear clash whatsoever. (And your clutch will thank you!)

Note: This can only be done on a hard, level or slightly downhill surface. Going uphill or on soft ground the tractor will stop moving before you can double clutch it into 5th gear.

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Jossette

04-03-2007 18:43:28




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:38:13  
if you want to save the tractor, start in 3rd and work your way up. Laziness will only spend a lot of your money later....



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Jossette

04-03-2007 18:33:29




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
check the gap in the points
check the choke


If you want to put a clutch in it and throw a valve, it's OK to start in 5th.

2 gallons of oil



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El Toro

04-03-2007 18:33:16




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 Re: M stuff in reply to eshoreboy, 04-03-2007 18:25:01  
It holds 8 quarts of oil. I don't know if that includes a quart for the filter change. Hal



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