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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28082
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Simplicity Broadmoar Lawn Tractor 2007. When you pull the

Customer Question

Simplicity Broadmoar Lawn Tractor 2007. When you pull the PTO up, the blades won't turn and the engine stalls. PTO replaced, new diode kit installed, clutch tested and i hear it clicking. What else could it be?
Submitted: 2 years ago.
Category: Small Engine
Expert:  Curtis B. replied 2 years ago.
Welcome to JUST ANSWER small engines, let me try to help you !! Does engine stall or is it dying like key is turned off? Does the deck pulleys and blades turn freely? If engine is dying like key is shut off, the safety circuit is killing the engine. It would be thinking no one is in the seat, Check the seat switch and the brake switch and harness.
Customer: replied 2 years ago.
yes, as soon as the pto switch is pulled, the engine dies like the key is turned off. If it's the seat switch (safety circuit), why would it let you start the tractor and run it with someone sitting on the seat?
Customer: replied 2 years ago.
if i pull the pto switch, the engine stalls. if i quickly push the pto back in, the engine revs back up to normal and doesn't stall.
Expert:  Curtis B. replied 2 years ago.
Seat switch has two functions, start and run, the run circuit is not complete.
Expert:  Curtis B. replied 2 years ago.
What is the long model number for the mower?
Expert:  Curtis B. replied 2 years ago.
So I can find the schematic.
Expert:  Curtis B. replied 2 years ago.
So I can find the schematic.
Customer: replied 2 years ago.
mfg no.(###) ###-####
Customer: replied 2 years ago.
sorry it's(###) ###-#### serial no. ***********
Expert:  Curtis B. replied 2 years ago.
I don't find anything but a parts list. Only switch I see is the seat switch and it is a NC switch, so it has to open when the seat is sat on! Unplug it and see what happens.
Customer: replied 2 years ago.
I unplugged it and put it back in and there was no difference. There is no power going to the clutch when pto is engaged.
Expert:  Curtis B. replied 2 years ago.
http://bsintek.basco.com/BriggsDocumentDisplay/fmlovKR.SFzXFix2.pdf-----------------------------------------------------------------------------------------------------The parts manual , page 32 shows only seat switch, pedal switch and the reverse switch , which cuts out the pto operation in reverse. If this switch is stuck, pto gets no voltage.???
Customer: replied 2 years ago.
When pto is pulled and engine starts to die, if I turn the reverse switch the engine revs back up with pto on.
Expert:  Curtis B. replied 2 years ago.
That is the over ride switch. Check the actual switch that cuts out in reverse.
Customer: replied 2 years ago.
Where would that switch be?
Expert:  Curtis B. replied 2 years ago.
On frame where the reverse linkage can push it!!
Customer: replied 2 years ago.
We replaced that switch and adjusted clutch. Mower blades started when pto was pulled. Made 2 passes in the yard and pto blew again. I get nothing when pto switch is pulled.
Expert:  Curtis B. replied 2 years ago.
Power to the switch? Power to the clutch?
Customer: replied 2 years ago.
The safety plug switch in the seat. Plus put new battery in.
Expert:  Curtis B. replied 2 years ago.
Are you using a voltmeter or test light to check voltage?
Customer: replied 2 years ago.
Yes
Expert:  Curtis B. replied 2 years ago.
Is there voltage to the pto switch?
Expert:  Curtis B. replied 2 years ago.
Is the voltage going to the pto clutch?
Expert:  Curtis B. replied 2 years ago.
Where is voltage lost?
Customer: replied 2 years ago.
Brand new Pto now has no voltage. Everything else does.
Expert:  Curtis B. replied 2 years ago.
Reverse switch not stuck or wire off?
Customer: replied 2 years ago.
No
Expert:  Curtis B. replied 2 years ago.
Is battery voltage up? Could this be low battery casing all this problem? Is battery voltage above 12.5 volts?
Customer: replied 2 years ago.
Yes. Brand new battery installed this morning.
Expert:  Curtis B. replied 2 years ago.
Have you check continuity between the switch wires and the pto clutch? Could wires be broken or damaged?
Customer: replied 2 years ago.
All wires are still in the protective sleeves. Wires that are exposed aren't damaged.
Expert:  Curtis B. replied 2 years ago.
good luck with it! I will opt out. Maybe someone else will have an answer.