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Farmall & IHC Tractors Discussion Forum
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Farmall Starter

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Crusher

08-12-2006 06:38:59




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I purchased a 1947 M and it had been converted to 12V. I'm converting it back to 6v and my question is the starter does not spin when I hook up my battery to positive ground. It spins fine when hooked up to negative ground. Is their anyway to fix this without purchasing a different starter. Thanks




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old

08-12-2006 09:19:57




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 Re: Farmall Starter in reply to Crusher, 08-12-2006 06:38:59  
Something every else missed it the fact that it could be a 12 volt starter and if so it will not work on 6 volts because it was made for the 12 volts. You need to look at the starter close and see if the tag if it has one says 6 volts or 12 volts. As I said if its 12 volts it will not work on 6 volts and you will burn it up tring

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El Toro

08-12-2006 08:01:07




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 Re: Farmall Starter in reply to Crusher, 08-12-2006 06:38:59  
You need 00 battery cables with soldered ends. Heavy welding cable will work fine. Make sure all connections are shiny and tight. That includes where you're grounding the battery. Positive ground worked fine for years. Hal



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Dave Grindle

08-12-2006 07:29:29




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 Re: Farmall Starter in reply to Crusher, 08-12-2006 06:38:59  
pos or neg ground makes no difference ..... the only reason you'r starter does'nt work on poss ground would have to be that for some reason you'r not getting a good connection somewhere (when hooked poss ground).....HOWEVER (you may need to have your starter rebuilt & / or find a different one anyway) because a 12 volt will spin a marginal starter sufficiently while a 6 volt will not - precisely the reason why a lot get converted to 12 volt in the first place ( converting to 12 volt is an "easy" fix for a weak starter &/or poor batt cables or connections ....or for an engine that is not tuned properly ) you need HEAVY cables for a 6-volt system to carry suficient current (approx. twice as thick as the "standard" 12 volt cables most parts houses handle).....buy new cables & make sure all connections are good ,make sure your batt is good ( not a "$30 wal-mart" with only 500 cranking amps ), then if she won't start the M your starter is weak - & even when everything is "up to snuff" , you may still occasionally have trouble starting the M ( if your engine has been rebuilt with high compression pistons , or in real cold weather ) it is also possable ( happens at least occasionally) that you ( at least think) you have everything in good shape - the tractor will spin good on 6 volt & still not start right up all the time .....if you run into that problem , in addition to re-checkling starter , cables & connections you may need to tune up the elecrical ( points , coil , plugs , wires , cap & rotor)..... what's happening if you run into this is that the cranking system is useing all of the avalabe juice & there's not enough left to fire the ingnition side (&/or the ignition side is "marginal") hope this helps ! ..... sorry for the long post , i coulda just summed everything up with " 6 volts started M'e just fine when they were new & still will as long as everything is "like new" !

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Red Dave

08-12-2006 06:58:12




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 Re: Farmall Starter in reply to Crusher, 08-12-2006 06:38:59  
That doesn't make sense. Something else must be wrong with the hook-up.

The starter is not polarity sensitive and doesn't care whether it is positive or negative ground.



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