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Farmall & IHC Tractors Discussion Forum
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break my wrist? f20

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dakotaclassic

11-11-2006 20:17:17




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any sugestions no getting it to start without that happening or eating the hand crank. she can be picky but when it fires its so worth it. retard the mag? and that lever to the cap on the mag isnt hooked up, up is off and down is run, is that how it retards? if so wich way do you go.




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LenRahilly

11-13-2006 15:21:34




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  
I always made a point of listening for the little jingling sound that meant the impulse pawl was getting ready to drop into the notch. I seem to remember that the noise stops once the pawl has dropped. Advice from others here is that retarding the mag lever isn't a bad idea. I agree--it's just another way to keep the engine from firing too soon, but I don't really know whether it retards the engine AFTER TDC. When the engine is working at full advance, of course, it is going to fire some degrees BEFORE TDC. Retarding with the lever isn't going to hurt anything, and it might give you some extra safety. If you should have a manual impulse, like on the E4A (and, I think, the Dixie mag used on some earlier IHC tractors), then you just look to see that the pawl has dropped into its notch before you complete the turn with the crank.
Lots of people used to spin the crank, but there is no question that if the impulse doesn't catch on one of those turns, there is a good chance of a strong kickback. My father told of broken arms from cars and tractors when he was young, in the 20s (happened to him). A magneto that is working right shouldn't need spinning. The impulse coupling not only retards the spark for safety, but also provides spin to make the spark hotter.

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Gene (IN)

11-12-2006 21:51:55




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  

I Mounted A Flywheel Off 80's Dodge Mini-Van Between Coupler Behind Bell Housing And Made Bracket And Installed 12 Volt Starter. Worked Great, Just Make Sure Starter Is Turning The Direction You Want.



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KEB

11-12-2006 09:57:49




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  
Impulse should click just AFTER top dead center. If it fires before TDC, it'll push the piston back down the way it came & kick back. Take a spark plug out, bring that cylinder up onto compression, turn the crank slowly, & watch the position of the piston when the impluse trips. Once that relationship is properly set, then I always set the spark advance on the mag to just off the kill position for starting, then advance it to run.

Unless you're working it hard, having the timing a little bit retarded won't hurt anything. Having it too far retarded will make the engine overheat.

Keith

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KEB

11-12-2006 10:00:39




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 By the way, RFD TV does it wrong in reply to KEB, 11-12-2006 09:57:49  
Just remembered, was watching one of the old tractor shows on RFD TV & they showed somone starting at old tractor by spinning the crank. You'd think someone who's a serious collector would know better...



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F-Dean

11-12-2006 13:33:44




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 Re: By the way, RFD TV does it wrong in reply to KEB, 11-12-2006 10:00:39  
If you retard the spark and put your thumb along side your index finger, never had a problem spinning it one turn in nearly 50 years.



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gene bender

11-12-2006 08:40:11




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  
If you want you can take out the coupler going to the tranny and use a flywheel off a auto tranny engine as they are flat fasten it to the shaft and then make a bracket for the starter add a batt then no more cranking. A fellow told me it aint original buut i wont have any broken bones either just will have to charge batt once in a while but a charged batt would start many many times between charging.

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Ron in Nebr

11-11-2006 22:17:08




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  
In addition to what's posted below....make sure you can hear that impulse coupling to the mag clicking when you're cranking it. Always have heard it on my F-20 but from what I've read on here in the past, if ya can't hear it clicking then it's lots more likely to kick ya.

What I do on mine is just keep all fingers and thumbs on the same side of the crank, then slowly rotate is till it's about at the 7 or 8 oclock position, then pull up. Ya just need to remember to pull up on the crank and be aware of what's going on and you should be OK.

Remember, these things aren't a man-killer. There were millions(well, alot) of 'em in use getting hand-cranked every day when they were younger. True, there's enough stories of people getting bit by em, but that's par for the course(lots of stories about Model T cranks doing the same thing). Just be careful and you'll most likely be OK.

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Ron in Nebr

11-11-2006 22:24:38




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 Re: break my wrist? f20 in reply to Ron in Nebr, 11-11-2006 22:17:08  
Oh yeah- mine doesn't have the rod from the hand controls to the mag shutoff switch either. I usually just stick it about halfway in the middle of it's travel and it's always worked fine. For what it's worth, I've experimented and it'll also start fine in practically every position but the "off" one.....so maybe mines just easy to get along with and ya might need some trial and error to find the "sweet spot" for yours to start.

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dakotaclassic

11-11-2006 20:50:00




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  
1/3 from the off position or 1/3 from the on?



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Sloroll

11-12-2006 05:05:21




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:50:00  
Retard from the Full On possition. You would be advancing from the off possition.



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IndianaMike

11-11-2006 20:44:09




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  
I normally kinda jump out of the way of the crank and pull out on it as it comes around. But yes, always start at 3 o'clock and end at 12, never try to spin the crank. I always try to put a lot of effort into the crank, trying to get the engine to keep spinning when the hand crank has stopped. If the air/fuel is right and the impulse coupler clicks over a few times, it normally sputters and coughs to life.

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Sloroll

11-11-2006 20:28:45




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 Re: break my wrist? f20 in reply to dakotaclassic, 11-11-2006 20:17:17  
Retard around 1/3 the travel on the mag. Only pull up on the crank with all your fingers and thumb on the same side. DON"T SPIN IT!



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Red Dave

11-12-2006 06:20:28




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 Re: break my wrist? f20 in reply to Sloroll, 11-11-2006 20:28:45  
Kickback happens when the spark is advanced too far.

Make sure it is timed correctly and start it the way Sloroll says and it should not kick back on you.



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