N Board Forum - Expanded Thread Page

Subject: 8N won't crank

[Back] [Return to Top of Forum]

Mike    Posted 11-18-2021 at 20:21:16 [URL] [DELETE]        [Reply] [Email]  
  • 8N won't crank
  • Parked tractor last fall, won't crank now. Have put on new battery, key switch, coil,points & condenser, plugs, and carb. Motor turns over good, Have spark on plugs. Opened drain on carb and no gas drained out, took gas line loose from carb and have gas there. Any ideas on the issue and how to repair.

    carl    Posted 11-19-2021 at 06:23:42 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N won't crank
  • OK, rookie mistake #1---start swapping out old parts with new when non-starting issues occur. Problem solve, don't guess. Putting all new parts in without knowing what the true root cause problem is results in may get lucky and happen on the problem but usually just places more unknown issues added to the equation. FUEL/SPARK/COMPRESSION - 3 essential steps needed to functioning. Concentrate on first two as usually is one or both of them. Just buying a new carb and now not knowing if it has been properly tested and set is not smart. New parts from Cheena are NEVER tested and pres-set. Rebuilding the OEM parts is ALWAYS the smartest way to go. Doesn't crank or doesn't start when cranked? First thing would be to get battery tested at a shop. Specific gravity. Needs to maintain a full charge under load. Next, Fuel Flow Test. You say you have no gas when you pull drain plug on carb. Is Valve open 2 -turns when you did that? If so, did you then pull fuel line off carb and repeat? Yes, and Still no fuel flow? Problem is in the fuel system, not carb. Should have left carb alone. Since it is off, can rebuild OEM carb, set to initial settings and put it back on. Is it a OEM 6V/POS GRN system, a front mount or a side mount distributor? Or did you do one of those 12V swap out jobs? Mucked up wiring is 99.98% of all non-starting issues. Get your ESSENTIAL MANUALS out and start with basics- FUEL FLOW must be done first while your battery is at shop being tested. Don't have the ESSENTIAL MANUALS? Shame and you wanna be an N Owner? Get them as they are the best tool investment you can make for your tractor. If you have a 12V job, go to HOW-TO's here and download 'WIRING PICTOGRAMS by JMOR' and get a copy of '75 Tips for N Owners by Bruce(VA)'. STOP BUYING NEW PARTS - you probably don't need them. Fix fuel issue. Verify Wiring is all correct before you do any more cranking.


    Farmer Brown    Posted 11-18-2021 at 21:44:09 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N won't crank
  • First step is to properly describe the problem.

    Bruce(VA)    Posted 11-18-2021 at 21:24:47 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8N won't crank
  • " won't crank now."

    " Motor turns over good "

    So, you're saying it won't start?

    Bruce9OR)    Posted 11-19-2021 at 01:56:36 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N won't crank
  • Engine turns over either when towed or turned by hand.
    It just won't crank.
    I always 'figgered' as you do,

    No crank,
    Crank, no start,
    Start and die,
    Start. run and die.

    This is just a no crank, but it turns over fine when being towed or turned by hand.

    Mike    Posted 11-19-2021 at 06:22:21 [URL] [DELETE]        [Reply] [Email]  
  • Re: 8N won't crank
  • Will not start, engine turns over when key is turned. Gas is flowing to the carb, but does not seem to be getting into the carb. I loosened the drain screw, but no gas came out, removed the carb and no gas ran out when turned upside down. Are there adjustments on the carb that I can do, I'm not a mechanic, just an old man trying to get his tractor running again.

    HCooke    Posted 11-19-2021 at 08:23:46 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 8N won't crank
  • Remove the brass elbow on the carb. It should have a filter. Check to make sure that filter is clear. If not that may be your problem. If that filter is clear, check to see if the float and needle valve are working properly. Sometime the needle sticks and you can free if with a tap on the side of the carb with a wooden object such as the end of a screw driver. If that does no work then you will have to service the carb.

    [Back] [Return to Top of Forum]