O/T Riding mower problem!!! - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 06-06-2007, 06:49 PM Thread Starter
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O/T Riding mower problem!!!

Ok Ive been working on my mother inlaws rider mower. It's a MTD 12 horse and I have replaced the safety switches, ignition switch, solinoid and yes even the fuse by the solinoid. When I turn the key to crank I here a little click in the fuel bowl where that little switch thing is but the motor will not crank. When I jump the solinoid it cranks but won't start. THe wires on the fuel bowl come from the safety switch wires. Has anyone here ever ran into this problem before????? I have tried everything I could think of and she's about ready to buy another mower but I know this one has another year or two left in it!!!!!! I would appreciate any ideas...
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post #2 of (permalink) Old 06-06-2007, 11:07 PM
 
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Two things come to mind...
One is the oil level switch. Current MTD mowers have a low oil cutoff switch that likes to go bad.

The other is... Are you getting fuel to the carb?
If you can hear the 'Click' in the carb, sounds like the float bowl is empty...

Same rules apply with this little engine,
Are you getting spark? Test plug the plug wire and see if you are getting reliable spark when cranking.

The rules say, Fuel, Spark and Air, and you are probably getting air...

Try starting it with a shot of starting fluid... That may help you track the problem down.
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post #3 of (permalink) Old 06-06-2007, 11:10 PM
 
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I'm probably gonna get chastised for this but I disconnected all of that stuff on my old mower and just put in a pushbutton start and a kill switch. Basically wire the push button to the starter and the kill switch so that when pushed it kills the magneto. It worked like that for years but was probably dangerous as all hell. Good luck hopefully these other guys have better advice than me
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post #4 of (permalink) Old 06-06-2007, 11:20 PM
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Quote:
Originally Posted by DEET View Post
I'm probably gonna get chastised for this )
Not from me Pal.

I say keep it simple.

"Beer is proof that God loves us and wants us to be happy."

Benjamin Franklin
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post #5 of (permalink) Old 06-07-2007, 12:54 AM
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Personally, I would yank out the motor and put in a 4.0 HO....I'm sure Novak makes an adapter plate to the transmission.....

While your at it change the gear ratio in the diff and maybe go to a spool....best to keep it simple.

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post #6 of (permalink) Old 06-07-2007, 03:50 PM Thread Starter
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I know it was getting fuel before when I jumped the solinoid with a screw driver I got it to start but as soon as I remove the screwdriver it dies. Yesterday I tried a new ignition switch and still got nothing but when I jump the solinoid it would just crank. Junkyard I will look for the oil switch that you mentioned!!!!!!!!!
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post #7 of (permalink) Old 06-07-2007, 06:33 PM
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although my landlords' "wheel horse" is around 40 years old, i have had the pleasure of redoing just about every part on it....

ill suggest tracing out every wire from your starter switch, make sure ya dont just have a bad one hiding in there somewhere

and dont forget to turn on the fuel petcock(if it has one)

yes....that has bit me in the past

good luck

'74 CJ5232 ci,Dana 30 & 44,basically a stock rig with fiber body
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post #8 of (permalink) Old 06-07-2007, 08:23 PM Thread Starter
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Jeepnut I think you got me on that one I did shut it off the last time I had worked on it so now Im just back to the the starting issue. I will trace the wires down again and see if I missed something. Im just going to go pic it up and bring it home so I have the comfort of my owne shop with more light to see everything a little better!!!!!
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post #9 of (permalink) Old 06-08-2007, 09:45 AM
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The starter switch gets my vote as well . Check it to see if it has 12v at the run terminal when on . All those safety switches , oil and fuel solenoids just create problems . One note, a lot of times on the cheapo tractors the ground system doesn't work correctly between all those switch points , rendering the ignition useless .

I'm one of those guys with a 40yr. old Wheel Horse , wouldn't trade the old girl for anything .
1967 Wheel Horse 1277 Hydro , 48" original deck . 900lbs of solid iron , 12hp Kohler K301S never been apart!
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post #10 of (permalink) Old 06-08-2007, 11:23 AM
 
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I've got a Cub 102 out back if anyone is interested I'll sell it reasonable...
Ran when I parked it, but you may have to clean out the fuel tank and lines again... Been there about 3 years now.

Was going to make a 'Mini Rod' out of it, but relocated the funds required and lost interest....
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