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Allis B-1


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#1 VintageIronCollector OFFLINE  

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Posted January 08, 2014 - 06:20 PM

Tractor has no spark. What should I do?



#2 hamman ONLINE  

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Posted January 08, 2014 - 06:27 PM

Check the points for stuck or not operating properly. Check for faulty plug, broken wire. Make sure ignition switch is operating properly. I ahd a neighbors tractor that would turn over but wasn't letting electric to the coil to get spark. Good luck.  Roger.


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#3 VintageIronCollector OFFLINE  

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Posted January 08, 2014 - 06:29 PM

I checked all that. Could be magneto or plunger?


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#4 LTD OFFLINE  

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Posted January 08, 2014 - 07:20 PM

Could be a bad coil. Does it spark at the points? Not sure what you mean by plunger?


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#5 hamman ONLINE  

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Posted January 08, 2014 - 07:22 PM

Yes it could. Have you pulled the cap of points and watched the points open and close as you tried to start it? Do you have a spark checker? I had a problem with one of mine and I bought a cheap spark checker and put it on to find a very weak spark which got beter with a point reset and cleaning. Roger.   P.S. I am assuming that it is a B&S motor.


Edited by hamman, January 08, 2014 - 07:23 PM.

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#6 boyscout862 ONLINE  

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Posted January 08, 2014 - 07:32 PM

Work your way through the troubleshooting section of this : http://gardentractor...ines-1919-1981/. Suspect the ground of the magneto. I'm having trouble with my BIG TEN too(mice). Good Luck, Rick


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#7 MH81 ONLINE  

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Posted January 08, 2014 - 07:45 PM

Inspect points, file and gap if they are operating properly.
Do a continuity check to make sure the points aren't grounded when open and key on...If all checks good, time to pull the motor to get to the mag and condenser
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#8 trowel OFFLINE  

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Posted January 08, 2014 - 07:52 PM

I'll bet it is the coil, 9 time out of 10 it is the coil on the Briggs 14, 19 and 23.

I hope i am wrong though, would be cheaper just to file the points.


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#9 MH81 ONLINE  

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Posted January 08, 2014 - 08:03 PM

When I did my Allis, I had to pull the engine to fix a wire.
No pics, but the verbal description made me smile at the remembrance.

http://gardentractor...ge-2#entry20121
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#10 Talntedmrgreen ONLINE  

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Posted January 08, 2014 - 08:23 PM

My B-1 came to me without spark or compression...I tightened the plug, and cleaned the points.  Runs like new! 

 

Always check the easy stuff first...so many times I've skipped something extremely simple, only to jump through all the hoops, spend some money, and still end up stuck until that light bulb goes off.


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#11 superaben OFFLINE  

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Posted January 08, 2014 - 08:28 PM

Check the points.  While you are at it, check the wires running to the points, especially under the points cover.  That cover can eat through the insulation (and ground the system) if it is not installed right along the way.

 

Ben W.


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#12 rustyoldjunk ONLINE  

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Posted January 08, 2014 - 08:50 PM

If the tractor has sit for a long period and the points,wires,etc are OK,pull the engine and lightly sand the mag and the magnet area of the flywheel.You will have to loosen the mag bolts or take them out to do this. Be sure to re gap the mag correctly. ( I usually use a business card but finding the correct gap and using a gauge would be best.) If all this fails ( The suggestions in the posts above and my post ),I would guess the mag (coil) is bad. Edited (again) to add a last thought. A bad condenser could be the problem too.


Edited by rustyoldjunk, January 08, 2014 - 08:53 PM.

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#13 Talntedmrgreen ONLINE  

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Posted January 08, 2014 - 09:22 PM

Check the points.  While you are at it, check the wires running to the points, especially under the points cover.  That cover can eat through the insulation (and ground the system) if it is not installed right along the way.

 

Ben W.

 

MMhhmm...I wasted a lot of time in the past, when all I need to do was fix up the wire where it runs through the slot in the points cover.


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#14 superaben OFFLINE  

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Posted January 08, 2014 - 09:42 PM

MMhhmm...I wasted a lot of time in the past, when all I need to do was fix up the wire where it runs through the slot in the points cover.

 

I know it the hard way, too.  I pulled my hair out over one and then found those stupid wires were grounding.

 

Ben W.


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#15 Talntedmrgreen ONLINE  

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Posted January 08, 2014 - 09:53 PM

I know it the hard way, too.  I pulled my hair out over one and then found those stupid wires were grounding.

 

Ben W.

 

:wallbanging:


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