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Cold Start Button-Bern

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Big John

10-28-1999 16:30:30

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Excuse me for being a "green horn" but what is a cold start button and where is it located?

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Bern

10-28-1999 18:01:23

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Re: Cold Start Button-Bern in reply to Big John, 10-28-1999 16:30:30

Cold start buttons are only located on tractors with the "Simms" or "Minimec" type inline pumps. The inline pumps can be identified by all the injection lines coming straight out of the top of the pump, as opposed to a distributor type where the lines come out at all different angles.

The inline pumps were used on some 3000s and almost all 5000s (tractors pre '75). The cold start button is located at the pivot point for the kill lever on the pump. To activate this button, the throttle must be pulled back at least half way, and the kill lever must be in the run position. Pressing the button does two things: 1) it increases the normal maximum fuel delivery by roughly 50%, and 2) it retards the timing somewhat. Both of these factors make the engine easier starting in the cold.

You'll know when someone has used on of these things when you see them start their tractor and it immediately races to a high idle for just a second, and a big cloud of black smoke comes out the stack.

Distributor type pumps unfortunately had no provisions for this kind of cold weather assist. Best to use either a manifold heater or block heater on these guys if it gets cold (or, least preferable) ether, used in extreme moderation!

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Big john

10-28-1999 18:33:21

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Re: Re: Cold Start Button-Bern in reply to Bern, 10-28-1999 18:01:23

Found the button, rubber covering is gone, is that hard to replace?

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Bern

10-28-1999 19:37:25

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Re: Re: Re: Cold Start Button-Bern in reply to Big john, 10-28-1999 18:33:21

Very easy. Go to your dealer and tell him you want part # C3NN9E571A shroud. It just slips right on.

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Jim(UT)

10-30-1999 21:48:36

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Re: Re: Re: Re: Cold Start Button-Bern in reply to Bern, 10-28-1999 19:37:25

Bern, I would sure like one of those parts books like you seem to have. Is that something available to the average shmoe or do you have to be a Ford tractor mechanic to get your hands on one? My tractor is 1955 850, that's the one I'd like to look up parts for. Thanks.

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paul

10-29-1999 08:44:40

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Re: Re: Re: Re: Cold Start Button-Bern in reply to Bern, 10-28-1999 19:37:25

And important! :) Snowblowing without it on.... My pump needed $1000 of repairs, told me it was very rusty....

My '77 Ford 7700 has that style pump, they must have uded them for several years.

--->Paul

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Bern

10-29-1999 10:28:18

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Re: Re: Re: Re: Re: Cold Start Button-Bern in reply to paul, 10-29-1999 08:44:40

Hi Paul. The inline Minimec pumps with the cold start button were used on tractors well into the 90's. However, since this is "YESTERDAYS tractors", I limited my examples to tractors built pre '75.

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paul

10-31-1999 18:06:18

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Re: Re: Re: Re: Re: Re: Cold Start Button-Bern in reply to Bern, 10-29-1999 10:28:18

:) I see - I thought _all_ my tractors were old, so never thought to classify them any different - I make it by 2 years!!!

--->Paul

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