Poulan lawn tractor doesn't run under load

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  #1  
Old 05-24-15, 07:40 PM
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Poulan lawn tractor doesn't run under load

My Poulan PR185H42ST lawn tractor with a B & S INTEK twin 18.5 HP 2 cylinder engine won't run under any load. I ran it out of gas last fall for the winter and left the switch on. Dead battery so I jumped it to get it started but it dies when I put it in gear. Also dies when I engage the deck. Any load and it dies. Anybody have any ideas?
 
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  #2  
Old 05-24-15, 08:38 PM
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As I replied to you in another thread, it sounds more like a safety switch as the problem, usually the seat switch.
 
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Old 05-24-15, 08:56 PM
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Not the switch. I bypassed it. A fuel issue, jets??? Like its not getting enough gas or choking out.
 
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Old 05-24-15, 09:06 PM
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You can't simply bypass the seat switch on some of these.
If it just stumbles and dies then I would suggest cleaning the carb. Fresh fuel, leave the air cleaner off etc.
 
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Old 05-25-15, 09:44 AM
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This sounds more like a safety switch issue rather than fuel. A common way to isolate the problem is to disconnect each of the ignition kill wires from each coil leading to the wiring harness. That takes the safety switches out of the equation.

The kill wire is the small wire leading from the coil.
 
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Old 05-25-15, 07:50 PM
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Question

If the problem was the safety switch would it idle? It only dies under load (putting it in gear or engaging the mower).
 
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Old 05-25-15, 10:37 PM
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Put it in neutral and let off the clutch. That's no load, does it still die?
 
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Old 05-27-15, 09:35 AM
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Yes. It dies when I try to engage the mower deck or engage the tranny when I let out the clutch. ANY LOAD ON THE MOTOR. And this all happened before I bypassed the safety seat switch.
 
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Old 05-27-15, 10:02 AM
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I'm still blaming the seat switch. How did you "bypass" it?
 
  #10  
Old 05-27-15, 12:09 PM
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You were correct. The seat switch is bad. I didn't realize that it was a Normally Closed switch so it needs to be open to run in gear.
Thanks a million.
 
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Old 05-27-15, 04:57 PM
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