2n starts hard and only with jump

Trucker1290 · Dec 9, 2014

My 2N with a six volt electrical system will
not start with the 6 volt battery. Battery is
good, took it to NAPA and had it tested.
putting out 6.8 volts and 685 cca. When I try
to start the tractor it will turn over but will
not start. If I jump the starter with a 12
volt booster, she fires right up almost
instantly. Use to start up every time until
recently. It's only in the high 20's to low
30's so temperature should not be the issue.
Any suggestions where to look now?

Thanks in advance

HCooke · Dec 9, 2014

At 20 to 30 degrees the battery does not have as much umph as it does at 60 degrees. Starter motor could be pulling so much current that there is not enough to get a spark. So first I would check for spark when starting with just the 6 volt battery alone. Fixes might be as simple as cleaning and tightening all the electrical connections.

greywolf224 · Dec 9, 2014

I would start with making sure you have good, clean and tight cable connections both at the 6 volt battery and starter ends.
Also remove starter and clean up both the starter face and the engine where the starter mounts to. Get rid of any rust that may exist. This is where the grd is formed.

What battery cable size are you running? I noticed a world of difference after changing to 00 cable. my PO was using #4 wire.

Also if you get nothing out of this, Just remember to make sure your tractor is in Neutral. You are in Direct Line of sight of that back wheel when jump starting and in gear.

R Geiger · Dec 9, 2014

(quoted from post at 03:45:39 12/10/14) My 2N with a six volt electrical system will
not start with the 6 volt battery. Battery is
good, took it to NAPA and had it tested.
putting out 6.8 volts and 685 cca. When I try
to start the tractor it will turn over but will
not start. If I jump the starter with a 12
volt booster, she fires right up almost
instantly. Use to start up every time until
recently. It's only in the high 20's to low
30's so temperature should not be the issue.
Any suggestions where to look now?

Thanks in advance

img]

I would check both ends of both battery cables. Hope you are jumping direct to starter.[/img]

old · Dec 9, 2014

Check your spark. If needs to be a good blue/white and jump a 1/4 inch gap. If you do not have a good spark then your starter maybe going bad and pulling to many amps so that your spark is not good enough to start it up

Trucker1290 · Dec 9, 2014

Update to my post. Battery terminals are nice and shinny and clean. Connections are nice and tight.
When jumping the tractor is in neutral, and I lightly touch the starter to turn it over. Trying to start it with the 6 volt battery alone, I do get a spark. I will check the connections to the starter to see how clean that is and will have have to clean where it connects to the tractor as well. Thanks for the ideas. Will keep looking.

Bruce (VA) · Dec 9, 2014

Yep, as others are telling you, having a fully charged battery is only part of the equation.

Cables (see tip # 41)and clean tight grounds are critical.

And make sure you are jumping it correctly (tip # 43)

And do check your spark (tip # 13)

If you don't have a spark that will jump 1/4" in open air, it's going to be hard to start. Especially when it gets cold.
75 Tips

LisaK · Dec 9, 2014

Good reminder Greywolf...lol I tried to run my husband over once buy not putting it in neutral..original starter button was bypassed...oops! Think he was checking for spark at the time

greywolf224 · Dec 9, 2014

Been there done that.

I scared the crap out of myself first time I was using one of those battery packs. Thank God I did not clamp the battery cables onto the starter. Rather I just touched them. When I saw the tractor jump, I jumped and the battery pack hit the floor breaking the connection.
I don't think that I would have been fast enough to get out of the way.

Dell (WA) · Dec 9, 2014

trucker........you do know yer 2N came from the factory 6-volt positive (+) ground, don't you? While there are some obscure advantages to positive (+) ground, in reality it don't matter much. Just as long as yer 6-volt genny will re-charge yer battery whatever the ground scheme is. Iff'n yer uncertain, ask and we'll instruct you on how to "polarize" yer genny.

As pointed out, the starter interface to the BIG hole in the tranny needs cleaning 'cuz them tinny 8-in screws don't do it. Just some sandpaper and yer good.

Biggest problem with OLD battery cables is CORROSION inside yer lead clamps. You can't see it but it certainly slows down yer 6-volt starter. Slow starter makes hard to start, eh?

Be certain yer insulated battery to starter switch is as thick as yer THUMB 'stedda skinny like yer little pinkie.

While it really don't hurt yer 6-volt starter motor to be jumped by 12-volts, you can be run over iff'n yer tractor tranny is NOT in NEUTRAL. Surprizingly enuff, tractor starter don't care positive (+) or negative (-) ground, will always turn the correct direction. ........HTH, Dell

old · Dec 9, 2014

That is why I tell people not to park a tractor in gear and even then I tell them to check before trying to start or it could be the last thing you ever do.

lha · Dec 9, 2014

After you check all the stuff everyone mentioned,and while you have your starter off,you might want to find an old fashioned starter.generator shop to look at it. They can tell you if it's pulling too many amps when trying to start your tractor.Make sure you have a couple of nuts to put on the bolts,or it'll come apart on you. lha

2n starts hard and only with jump

Trucker1290

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HCooke

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greywolf224

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R Geiger

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old

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Trucker1290

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Bruce (VA)

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LisaK

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greywolf224

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Dell (WA)

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old

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lha

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