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Discussion Starter · #1 ·
I have a Toro LX500. New starter motor, new battery.
The mower starts great and the engine is solid.
Problem is, when I engage the blades it dies immediately.

Any ideas on how to fix? I don't know the schematics but I tried to bypass the seat switch by tying the wires. All that did was cause it to stall any time the brake was released and the blades wouldn't even try to engage.
When I leave the wires separated the mower stalls when the blades try to engage.
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I attached a sample LX500 wiring diagram, it may not be the same as yours! Post your model / serial for confirmation.
look for the y/blk (yellow / black) wire off the PTO switch or the module, or w/blk (white black) wire on either the PTO switch or the relay and unhook it. If that fixes your problem , I would change the relay as it may be bad. Keep us posted (ps - re-configure you seat switch wires to previous working order)
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Discussion Starter · #3 ·
Sorry for the late reply and thank you for your response laser3kw.
This was a mower I picked up pretty cheap. Turns out the issue is with the blades/spindles rather than an electrical issue. Having a heck of a time trying to get the deck off to fix it. The pull out spring bolts on the back of the deck feel like they are welded on.
 

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I have a Toro LX500. New starter motor, new battery.
The mower starts great and the engine is solid.
Problem is, when I engage the blades it dies immediately.

Any ideas on how to fix? I don't know the schematics but I tried to bypass the seat switch by tying the wires. All that did was cause it to stall any time the brake was released and the blades wouldn't even try to engage.
When I leave the wires separated the mower stalls when the blades try to engage. View attachment 62769
View attachment 62768
My John Deere LX178 does this occasionally. I found that the gas in the tank was old. That seemed to help stop this from occurring. I also have shook the fuel line to ensure there isn't a potential air bubble in it.
 
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