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Old 09-05-2012, 06:30 PM   post #1 of 8
walter g
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Default 1967 John deere 112 wiring diagram needed

Does anyone have one they can, post or email me. My 1967 112 Rf isn't firing.
It's been partially apart for a while and I want to make sure everything is wired corectly.
Coil, points, sparkplug, and the condensor are new.
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Old 09-05-2012, 09:32 PM   post #2 of 8
walter g
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Default Re: 1967 John deere 112 wiring diagram needed

I found one on my computer. It's been so long sense I worked on it, I forgot I had a wiring diagram.
It's wired right but I need to pull the gas tank and check the dash end of the wiring.
Not too hopeful, because I can see a mouse nest.
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Old 09-06-2012, 12:30 AM   post #3 of 8
walter g
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Default Re: 1967 John deere 112 wiring diagram needed

I put a new Kohler coil on it, but they are bigger around the the Tec. coils. You have to use the original bracket and I can't get in the bolt that holds the condenser in.
I'm guessing my Tec coil is good. Tomorrow I will check for chewed wires.
Stupid mice.
I've added a shutoff valve and filter to the side of the engine also. It's a work tractor so safety is more important then being 100% original. Easy enough to change back anyway.
I also use the John deere battery cover. Not shown in the pics below. Sorry I used my
junk compact cam.
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Old 09-06-2012, 01:07 AM   post #4 of 8
Sergeant
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Default Re: 1967 John deere 112 wiring diagram needed

If there Is One thing I would Like to do is kick The JD engineer who ever decided On Using Tecumseh engine In there 112's weather Its a RF or a SF. I wish they Had Just Used Kohlerís Period In the 112 Like they had Done with 110 RF & SF I Know the Person retired But I donít Know If there still alive Yet But I canít stand my Tecumseh In My 69 112SF
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Old 09-07-2012, 08:55 PM   post #5 of 8
walter g
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Default Re: 1967 John deere 112 wiring diagram needed

I like the big Tecs, when they run right.
I'm not sure why John Deere went with Tecumseh for the 112s. Cub was using all Kohler engines.
I wonder if that had anything to do with it.

I pulled the battery box today and there wasn't any chewed wires. I bought a new multimeter so I can start testing the electrical system.

You can see Mikeys nest in the pic below.
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Old 09-07-2012, 09:09 PM   post #6 of 8
rodh
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Default Re: 1967 John deere 112 wiring diagram needed

Did you use a test light to make sure the coil had voltage? That hot coil wire goes to the safety switch show in your pic and to the ignition switch.
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Old 09-07-2012, 09:38 PM   post #7 of 8
walter g
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Default Re: 1967 John deere 112 wiring diagram needed

Quote:
Originally Posted by rodh View Post
Did you use a test light to make sure the coil had voltage? That hot coil wire goes to the safety switch show in your pic and to the ignition switch.
Thanks. I don't think it has any voltage going to the coil. I know there is no voltage to the spark plug.
I will test tomorrow if it doesen't rain again.
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Old 09-08-2012, 09:06 PM   post #8 of 8
walter g
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Default Re: 1967 John deere 112 wiring diagram needed

The pink wire on the positive side of the coil goes directly back to the ignition switch.
With the key on or trying to start it the wire reads 0 volts.
The safety switch in the last pic is the mower deck safety. In the up position, you cant turn over the engine, in the down position you can.
This is my first RF, so this is new to me.
I'm not that good with tracing electrical problems. Is there anything else I should check,
Or is it like I thought a bad ignition switch.

Last edited by walter g; 09-08-2012 at 10:37 PM.
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