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9N will not crank


 
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rlpintx
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PostPosted: Mon Oct 29, 2012 6:43 pm    Post subject: 9N will not crank Reply to specific post Reply with quote

I went out to help brother in law with his 9n that he wanted to load. I don't have a manual handy and forgot that 9Ns or a bit different than 8ns. It has been converted to 12 volt and it is getting power to the starter but the starter is doing nothing. Thinking its the plunger switch or the starter itself but it was rebuilt a year ago maybe a little more. Can someone remind me how the starting systems are different and give me some tips on what to check to get this thing to start again. We did get it to start by pulling it and it runs just fine.
 
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rlpintx
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PostPosted: Mon Oct 29, 2012 6:53 pm    Post subject: Re: 9N will not crank Reply to specific post Reply with quote

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Royse
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PostPosted: Mon Oct 29, 2012 6:55 pm    Post subject: Re: 9N will not crank Reply to specific post Reply with quote

The 9N, if they used the original neutral safety push switch when they converted
it to 12 volts, has a mechanical push button switch as opposed to a solenoid.
If you are getting power to the lug on top of the starter, that is at least making contact.
If it is in fact battery voltage at the starter lug, not something less, I would
look for a bad ground to the starter.
You could try grounding the starter case to the frame with one lead of a pair of
jumper cables and see if it will crank normally then.
Bad connections are a major culprit. Both ends of each battery cable, the area
where the starter case meets the bell housing, etc.
If you have battery voltage to the starter, and ground it and it still won't crank
I would have the starter tested.
 
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rlpintx
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PostPosted: Mon Oct 29, 2012 6:56 pm    Post subject: Re: 9N will not crank Reply to specific post Reply with quote

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JMOR
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PostPosted: Mon Oct 29, 2012 7:00 pm    Post subject: Re: 9N will not crank Reply to specific post Reply with quote

No solenoid as on 8N, just a mechanical switch operated by button/hinge/push rod as seen here. If power actually to terminal on starter motor, then switch must be working. Then check motor housing to ground (rust/paint/corrosion at mating surface to engine) and whack it with hammer with power applied to disturb stuck or worn out brushes. Also check loose cable connections or dirty connections or bad cables(usually at terminal ends).

 
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old
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PostPosted: Mon Oct 29, 2012 8:40 pm    Post subject: Re: 9N will not crank Reply to specific post Reply with quote

If it is in fact getting power to the starter and the starter does not spin then you either have a weak battery a poor starter ground or a bad starter plain and simple.
 
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souNdguy
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PostPosted: Tue Oct 30, 2012 5:23 am    Post subject: Re: 9N will not crank Reply to specific post Reply with quote

ditto what the others said.

the plunger on the trans top merely presses a switch via linkage.

that is just a high current start switch. like crowbaring across the contacts.

if the starter is in fact getting power.. and not spinning.. check starter, bat cables, bat or contacts.
 
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