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Allis Chalmers Discussion Forum
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Hand cranking AC Model B

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Greg P in MI

06-28-2006 07:03:51




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Just bought an old AC model B. Anyone know proper technique for starting? I have a CA that is electric start.

How many cranks is proper for starting?

Thanks,

Greg




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Dick L

06-28-2006 08:43:53




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 Re: Hand cranking AC Model B in reply to Greg P in MI, 06-28-2006 07:03:51  
A few years back I had two B"s and a C that I hand crank started. All three required different settings to start. One needed full choke, one needed half choke and the other one if choked it at all you could forget getting it started with the crank for at least an hour of setting. That was the C that I pulled. If it didnt start it on the third crank I chain started it. (Pulled it to start for the yuppies)

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bjb in NE

06-28-2006 07:37:05




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 Re: Hand cranking AC Model B in reply to Greg P in MI, 06-28-2006 07:03:51  
Depending on how long mine has been sitting sometimes it takes several cranks to get it going (I shut it off by turning the fuel off and running the carburator dry). I usually set the throttle at half speed, and full choke for the few first cranks. Then I put the choke to about half and start cranking until its takes off. Just remember to have your thumb on the same side of the crank as your fingers. Also the impulse in the magneto needs to be working inorder to hand start it. If that sounds like too much work you could just pull start it. Its easier to hand start a tractor after it has had a chance to warm up a bit.

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old

06-28-2006 07:34:13




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 Re: Hand cranking AC Model B in reply to Greg P in MI, 06-28-2006 07:03:51  
It all depends on if every thing is working right/set right. Just be careful when you crank it, it can/will brake your arm. Ya years ago we had a hand crank B and I ended up in the hospital becasue it kicked back on me and I wasn't holding the crank handle the right way



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Chris (OR)

06-28-2006 08:20:57




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 Re: Hand cranking AC Model B in reply to old, 06-28-2006 07:34:13  
I have a '39 B that I rebuilt. I specifically got a hand crank for the heck of it... I would agree with bjb but add... MAKE SURE it's out of gear, PTO disengaged, clutch locked in and the brakes are set. I keep mine cap and rotor pretty clean and usually can get it to start on the second pop. Thus I set the choke to about 1/2 way with about 1/2 throttle. Fish in the crank (it catches at about 11 o'clock on mine) and crank it over once clockwise to 5 o'clock. I pull the crank back to 11 and come over on it again to 5. It usually starts...

I STRONGLY agree with bjb on the run the carb dry when you are done using the tractor. If you are just going to turn if off for 3-4 minutes use the kill switch on the mag. If you are done for the day, turn off the fuel on the bottom of the tank and it will go dry in 30 seconds or so... If you don't cut the fuel, mine seems to be flooded when I go to start it next time. If that happens you end up cranking on it for 30 minutes or pulling all the spark plugs and blowing out the cylinders with compressed air...

Best of luck.

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