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Subject: 2N Dilema

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Del Huebner    Posted 06-26-2018 at 12:14:01 [URL] [DELETE]        [Reply] [No Email]  
  • 2N Dilema
  • My daughter has a 46 2N with a Woods belly mower. When she mows it will run for about an hour or so and suddenly quit. It will not start back up until it sits for about 15 minutes then will start back up. She lives about 15 miles from our place so by the time I get out there to look at it everything is fine and it starts right up. I did change out the key switch and replaced the non-vented gas cap with a vented one. It has spark and gas flow when I check it. When she mows again its the same thing ,shutting down and no start. Is there anything I can check without being there when it shuts down? She says it also seems to lose power on a uphill grade. Any help here would be appreciated. Thanks

    ALZ(MO)    Posted 06-27-2018 at 11:54:50 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Dilema
  • Some time ago, my '48 N did this. What I found was that the condenser, added during 12v conv. from former owner, had an open back. When it got hot, the spring would expand and touch the cowling. I removed condenser and added a pc of cardboard behind it. Never did it again. Granted that may not have been issue, could have been carb had some trash in porting, but all is well.

    Tim Daley(MI)    Posted 06-27-2018 at 04:05:48 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Dilema
  • It sounds an awful like a fuel flow issue, not an electrical issue, however just shutting down could be an electrical short too. A frayed wire may be making intermittent contact and thus shorting out so a thorough inspection of the entire wiring will determine. The gas cap was a good idea but why the key switch? The usual questions now - 6V/POS GRN or 12v/NEG GRN? Losing power on a grade could be governor not kicking in too. Maybe next time she mows plan on being there to perform usual tests as soon as it dies -spark/fuel flow.

    Tim Daley(MI)

    mikenmo    Posted 06-27-2018 at 00:53:54 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Dilema
  • betting on the coil..........

    Tim Daley(MI)    Posted 06-27-2018 at 05:14:12 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Dilema
  • Yes, the Coil could melt internal insulation if key switch was left on and points were closed. Once it gets hot, it loses its insulating properties again and thus could short out and kill everything. Once it sets and cools down, it solidifies somewhat -enough to insulate and allow a restart. Could test the coil when next time it shuts down to check resistance static right away before it cools down. Remove coil and measure OHMS from top post to pigtail spring. 6V coil should read about 1.3 OHMS. This test would require working around a hot engine so use caution.

    Tim Daley(MI)

    Del Huebner    Posted 06-26-2018 at 15:38:45 [URL] [DELETE]        [Reply] [No Email]  
  • Thanks!!
  • Thanks guys, have a spare coil and will try it and post a "follow-up" next time she mows.

    HCooke    Posted 06-26-2018 at 12:36:58 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N Dilema
  • Hi Del, Can you show here how to check for spark when it dies? Since you have replaced the ignition switch, I would suspect a failing coil. According to John Smith, this symptom of failing to run after 1 hr is frequently caused by a bad coil.

    steveVa    Posted 06-26-2018 at 15:31:27 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Dilema
  • I agree with HC. That is often a symptom of a coil going bad. Either that or gas starvation from a clogged filter screen. If you have a spare coil, swap it out and see if it cures the problem. If so you are done...

    John in Mich    Posted 06-26-2018 at 13:46:34 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Dilema
  • I have experienced that on two tractors. Very frustrating when in the middle of a project.

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