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Subject: 9N Starter Disengages When Engine Tries to Start

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Tony Sanchez OR    Posted 11-10-2017 at 17:30:15 [URL] [DELETE]        [Reply] [Email]  
  • 9N Starter Disengages When Engine Tries to Start
  • I finally got this 9N that's been sitting fir years to turn over with a spark.
    I got some starting fluid to get things going. The engine turns slowly so I thought I would us starting fluid. The engine fires right away then the starter kicks out and spins stopping the engine from starting. Could it be a bad starter? Not familiar with old starters and I'm not sure why there is a spring on the end of the starter shaft inside of the clutch housing.

    Thanks
    Tony
    Oregon

    Tony Sanchez [OR]    Posted 11-12-2017 at 00:23:54 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • I finally got it to start and run. Since the push button at the shifter is rusted tight, I couldn't use it so I used jumper cables. I finally realized that the power was being used up by the cables. I removed the start switch and hooked up the battery as it should be and pressing the button by hand. The starter still disengages but the start up now is so fast that at times the engine takes off and runs. Now for a new Bendix.
    Amazingly enough, the spark plugs are old and rusted, the plug wires are just as old, points, cap, rotor and coil still work. Impressive.
    Great Veterans Day!
    Tony

    Rustyal    Posted 11-11-2017 at 12:43:31 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • Sounds like your battery may be weak.

    Tony    Posted 11-10-2017 at 22:11:30 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • Sounds like it wants to go. Pull start it. See if it will fire and run on all four. Go on from there.

    Might have to replace the Bendix drive. Not a big job.

    Tony    Posted 11-10-2017 at 22:37:53 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • Just reread your first post. If you are just getting it to fire on starting fluid they will kick back and disengage the drive. Figure a way of getting gas to it, use starting fluid to get it to fire and see what happens..

    Bruce (VA)    Posted 11-10-2017 at 17:35:20 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • You can get the newer style bendix or you can do a tune up on the tractor.

    It works like this......the bendix engages the ring gear on the flywheel & turns the engine over. When the engine speed exceeds the design speed of the bendix (because the engine is running) it disengages. (and I can never remember what RPM that is) All the new style bendix does is allow a higher engine speed before it disengages.

    What is happening in your engine is that 1 or 2 plugs fire, the engine momentarily exceeds the bendix disengage RPM.....and it disengages before you have all 4 firing.

    If you want to tune it up, just ask; plenty of folks can walk you through that (but see tip # 39 first).

    And, if you want to pull the starter & replace the bendix, just ask about that as well.

    Tony Sanchez [OR]    Posted 11-10-2017 at 23:22:05 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • I see. So its's the bendix and not the starter itself. I'm not sure if it's original. A lot of things on this tractor appear to be original. I wish I could pull it to start it.Don't have the room out side. The carburetor is clean and ready to go. Where do I find just the bendix unit?
    I don't have the book yet. It's in the mail. I did figure out how to time the distributor and set the points. Tomorrow I will try the hand crank.
    Thanks
    Tony

    Bruce (VA)    Posted 11-11-2017 at 08:57:44 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • Well, you could get the new positive drive Bendix from Just8N's, or, as I said, give the tractor a tune-up. The old style Bendix just disengages at a lower rpm. It will work fine as long as the tractor is well tuned.

    Unless you know how to use that crank, best to leave it alone. Especially if the tractor is just the least bit out of time.

    Jack - Iowa    Posted 11-11-2017 at 08:06:24 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • IF you try the hand crank, be sure and hold the thumb against that first finger. That way if it backfires the handle slides out of your hand rather than trying to take your thumb off. In other words, lay your hand on the crank handle and wrap your fingers down and around. DO NOT PUT YOUR THUMB UNDER THE CRANK HANDLE.

    Good Luck,

    Jack

    36 coupe    Posted 11-11-2017 at 04:13:23 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • Dont mess with a hand crank,it can kick back and break your arm.The original starter drive was designed for the Ford v8 60 engine.Worse some replacement drives are crap.

    Tony Sanchez [OR]    Posted 11-11-2017 at 11:53:32 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N Starter Disengages When Engine Tries to Start
  • Well the hand crank didn't work. It did kick back a couple of times but it just wouldn't catch. The valves are probably not sealing well enough to make this work. I will wait for the book to tune it up better. My dad told me stories about the time when he was in the Army in the late 20's when they would stand in line in the snow hand cranking the trucks. Somebody always got hurt.
    I will come back here and post up and results in the future.
    Now I will start a new tread about what this one is. 9N or 2N.
    Have a Great Veterans day for those who served.
    Thanks
    Tony Oregon

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