Messed up replacing starter solenoid

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  #1  
Old 07-06-10, 04:25 AM
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Messed up replacing starter solenoid

When replacing the starter solenoid in my TroyBilt riding mower, I attached the "green" wire to the 12 volt line. The result was smoke coming from around the flywheel area.
Now, the engine cranks but does not run; its like its not getting a spark. The motor is a B&S ELS500, 18.5hp, model 31Q777-0215-E1.
I've replaced the coil (appeared to have gotten hot) and I'm going to pull the flywheel to see if I can spot anything burned. There are 2 wires coming from under the flywheel - they read open. Also neither side is shorted to ground.
Since I do not have a wiring diagram, is there anything I need to be looking for (other than burned components)? Also, what is the gap for the coil?
 
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Old 07-06-10, 06:19 AM
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Here's a link to a spec. chart for Briggs engines it has your armature gap 10-14
http://www.smalleng.com/linked/briggsspec.pdf
 
  #3  
Old 07-06-10, 09:15 AM
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msabot, thanks for the info.
Is there a such thing as a wiring diagram for this engine or am I going to have to dig my way thru the engine looking for and replacing bad components.
For example, what sort of electronics is under the flywheel?
 
  #4  
Old 07-06-10, 10:02 AM
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They have some pretty good reading here:
http://www.smallenginesuppliers.com/html/engine!-specs/briggs/briggswiringexplanation.pdf

It's 18 pages and towards the back are some helpful wiring diagrams.

If you can find the model & serial # of the tractor, enter it here and see if they offer a manual that will be of use to you: http://manuals.mtdproducts.com/mtd/P...randCode=10001
Good LuckBeer 4U2
 
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Old 07-06-10, 12:11 PM
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msabot, again, thanks for the info. That was what I was looking for (I think...), but I'll start with the brew first.
 
  #6  
Old 07-08-10, 01:16 AM
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There are no electronics under the flywheel that will keep the engine from starting. If you have a new coil on, have it gapped properly, and have it on right-side-up, then you probably fixed the source of the smoke you saw.
 
  #7  
Old 07-08-10, 06:55 PM
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Thanks for all responses. I removed the flywheel and found that the stator and diode were OK so I started to look at the starter solenoid that I replaced.
Evidently I've hooked up something wrong because my battry was drained to 2.5 volts.
I noticed that when I hooked up the battery, the solenoid under the fuel bowl was clicking. I think that drained my battery (not the key was in the off position).
I cannot find a chassis wiring diagram so I'm still trying to figure out the wiring at the starter solenoid.
In short, I have a wiring harness going from the battery/solenoid area. there are 5 wires in that harness; Red from solenoid to starter; red/white stripe for the starter solenoid tab, red from the battery; and 2 green wires. One green wire goes to a 20 amp fuse, then to the battery negative side. The other green wire...thats the wire that I messed up. Where does that go?
Also, why fuse the battery ground?
 
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Old 07-08-10, 11:57 PM
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The fused wire is not supposed to go to ground I'm sure. The other green wire may be the one that goes to a ground bolt that bolts the solenoid on.
 
  #9  
Old 07-09-10, 07:51 PM
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Well, I replaced the 20 amp fuse for the instrument panel and also found one under the seat for look like it was fusing the ground lead. It was bad so I replaced it.
Now I can get the motor to crank but it will not run. I've put in a new plug and have pulled it to check that I'm getting a spark.
I'm assuming that I'm getting gas since I see the vapor coming out of the carb (the air filter is removed). Is there anything else I should be looking for? It does have oil but how does the low oil sensor work (if its electric, maybe I fried that also). Could that be the problem?
This is getting frustrating and the grass keeps growing.
 
  #10  
Old 07-10-10, 02:08 PM
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"I'm assuming that I'm getting gas"

Since you have the air cleaner off, spray a shot of carb. cleaner (not starting fluid spray) into the carb. and try firing it up. If it starts, then you'll know where to look.
Good luck.
 
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