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New To Me Cub 107


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#1 NyRedNeck OFFLINE  

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Posted August 11, 2014 - 08:53 AM

Hey folks,

 

I picked up this Cub a week ago.  The ignition switch is not working.  Turning the key i get nothing.

I hit the starter gen with 12 volts to spin the engine.  (Not sure if it is ok to do?)
 

I am getting no spark at the points or plug.  I already swapped the coil.  Any ideas?

 

 

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#2 crittersf1 OFFLINE  

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Posted August 11, 2014 - 10:13 AM

Put a switch in it.



#3 NyRedNeck OFFLINE  

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Posted August 11, 2014 - 10:47 AM

Put a switch in it.

 

Any other electrical components that would cause lack of spark when the motor is spinning?



#4 JDBrian OFFLINE  

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Posted August 11, 2014 - 10:48 AM

I would verify the wiring. Make sure it's all hooked up correctly. Assuming your battery, solenoid and starter are good you may have a bad ignition switch. You could jumper the start contacts to verify it's the problem.



#5 NyRedNeck OFFLINE  

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Posted August 11, 2014 - 10:58 AM

I would verify the wiring. Make sure it's all hooked up correctly. Assuming your battery, solenoid and starter are good you may have a bad ignition switch. You could jumper the start contacts to verify it's the problem.

Electrical is a mess. Bypassing the ignition switch by placing cables on the starter gen.  This gets the motor spinning but i have no spark at the points or plug. I replaced the coil but still no luck



#6 JDBrian OFFLINE  

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Posted August 11, 2014 - 11:10 AM

Electrical is a mess. Bypassing the ignition switch by placing cables on the starter gen.  This gets the motor spinning but i have no spark at the points or plug. I replaced the coil but still no luck

If the wirings a mess I would stop and put it all right. You could start with the ignition circuit. If power is not getting to the top of the coil you won't get spark.



#7 NyRedNeck OFFLINE  

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Posted August 11, 2014 - 11:12 AM

I really suck at electrical. Just want to see if this thing will pop before i get too deep in rewiring etc.



#8 crittersf1 OFFLINE  

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Posted August 11, 2014 - 12:04 PM

Figure out which terminals on the switch do what, jump them so the coil gets power then spin it. Just like "hot" wiring an old car.


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#9 NyRedNeck OFFLINE  

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Posted August 11, 2014 - 12:47 PM

Figure out which terminals on the switch do what, jump them so the coil gets power then spin it. Just like "hot" wiring an old car.

There are too many wires that are a mess.  I would like to completely bypass the whole ignition switch.



#10 EconChuck OFFLINE  

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Posted August 11, 2014 - 12:59 PM

Run a 12v supply(from positive post of solenoid or battery) wire to the "+" side of coil and spin engine to check spark. If engine runs then you will need to disconnect this wire to stop engine.
Good luck.

Edited by EconChuck, August 11, 2014 - 01:00 PM.

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#11 1978murray OFFLINE  

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Posted August 12, 2014 - 03:18 PM

like EconChuck mentioned you need a 12v power supply running to the postitive side of coil to make spark. if you are only putting jump pack leads on starter the engine will not have spark.  


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#12 NyRedNeck OFFLINE  

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Posted August 12, 2014 - 03:30 PM

like EconChuck mentioned you need a 12v power supply running to the postitive side of coil to make spark. if you are only putting jump pack leads on starter the engine will not have spark.  

Will give it a shot this weekend.  Wish me luck.



#13 motobreeder OFFLINE  

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Posted August 12, 2014 - 08:17 PM

Do you have a volt/ohm meter?

 

Suggest that you disconnect the battery (always disconnect the ground first).

Then use the ohm meter to make sure there is connectivity between the ground cable at the battery and the tractor chassis and motor including the housing of the starter/generator.

 

Ground is common for both the starter and spark.

 

 

Here's a link to some wiring diagrams: http://gardentractortalk.com/forums/topic/3776-wiring-game/#entry40935

Take your time and it will make sense.


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#14 NyRedNeck OFFLINE  

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Posted August 19, 2014 - 03:33 PM

Hey guys thanks for the tips.  I was able to get the cub running by placing the negative cable from a battery to the frame of the tractor. Positive cable from battery to the + side of the coil and an additional cable from the positive side of the battery and tap the A leg of the starter gen. 
She started right up and runs quite well.
So I guess I am looking to replace the ignition switch now.

One additional problem I may be having is the mower deck belt seems real tight. When I try to disengage the PTO I do not see any slack on the belt and I cannot start it with the deck hooked up.

How do you adjust the tension on the belt?

Can anyone post a few photos of the Mule drive (front 2 pulleys just underneath the grill area)? It seems one of the pulleys is held with a spring, however the other is missing the spring like the other side and it looks like the PO may have welded a small threaded rod instead of the spring and at some point it got bent up.  So a few photos of the front 2 pulleys would be helpful.  Also a stupid question.  To engage the pto it is in the forward position or toward the back?  I thought the book says forward to disengage but there is a sticker on the dash that seems the rear position would be disengaged.

Thanks for the help in getting this thing running.  Is there a wiring diagram for the 107 somewhere?



#15 NyRedNeck OFFLINE  

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Posted August 21, 2014 - 04:11 PM

Do you have a volt/ohm meter?

 

Suggest that you disconnect the battery (always disconnect the ground first).

Then use the ohm meter to make sure there is connectivity between the ground cable at the battery and the tractor chassis and motor including the housing of the starter/generator.

 

Ground is common for both the starter and spark.

 

 

Here's a link to some wiring diagrams: http://gardentractortalk.com/forums/topic/3776-wiring-game/#entry40935

Take your time and it will make sense.

 

 

Are these diagrams for the 107 specifically ?


Edited by NyRedNeck, August 21, 2014 - 04:11 PM.





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