PTO pn my GT3206 stopped working?

aaron0000934 · #1 07-08-2011, 10:12 PM

I was mowing the other night and my PTO for the mower stopped working.

I have a GT3206 with a 54" deck. The switch was on and it quit working. I have the sensor under the seat unhooked and also the reverse safety switch fixed. Has anyone had the PTO swith go bad on the dash? I checked the fuses and didnt see any blown ones. I checked my manual for a wiring diagram so I could chase the wires and couldnt find anything. Does anyone have a wiriing diagram? Any thought or inputs would be appreciated.

thanks Aaron

John H · #2 07-09-2011, 08:36 AM

Aaron

here the service manual for series 3000, there are two listed here the link.

http://www.mymowerparts.com/pdf/Cub_...epair_Manuals/

good luck john

aaron0000934 · #3 07-10-2011, 09:35 PM

Thanks for the manual. NOw the tractor will not start. If I turn the key it will run for a couple seconds and then shut off. I changed the fuel filter, checked the plugs, cleaned the carb and nothing changed. Could there be a safety switch that has malfumctioned and wont let the tractor run. All the fuses look good. I unhooked the PTO switch to see what happens and the ignition does the turn the starter. Does anyone have any ideas?

Vince_o · #4 07-10-2011, 09:53 PM

Arron

You took the switch out, and it ran? = safty switch, or PTO switch

You leave it in, and it wont start? = PYO switch

Im not good at elec, but I have worked on a few of these. And one I had that trouble, but I cant remember what I did to it to fix it.

aaron0000934 · #5 07-11-2011, 08:30 AM

Sorry I typoed my statement. When the PTO switch was unplugged it would NOT run or turn over the starter. With the PTO switch plugged in it starts for only two or three seconds and then shuts off. It is deffinetly something electrical that is malfunctioning. In shame I had to mow my lawn yesterday with a John Deere.

aaron0000934 · #6 07-12-2011, 07:57 AM

There is nothing wrong with the electircal. After pulling the seat off last night and checking the seat safety sensor I found that to not be the problem. After studying the wiring diagram I realized that was really the only sensor that would not let the motor run. I took the air cleaner off and sprayed some starter fluid in the carb and it fired instantly. So it is a fuel problem. New fuel lines, filter and I cleaned the carb. I pulled the valve cover off the head that has the pump. I cycled it to make sure it is squirting gas, and it appears to be fine. A clever design I might add. So whats left? Perhaps I missed some thing in the carb, tonight I will soak the whole thing in cleaner. Does anyone know where to get a rebuild kit? I noticed that the 48 size jet was not clear all the way threw. I tried poking a needle thru with no luck. Should that be open? I've been running star tron fuel treatment in hopes of avoiding these problems. But the previous owner was not that good at maintenance.

I've edited your post. We will not be the place to learn how to by pass safety switches.

Duke

Vince_o · #7 07-12-2011, 09:20 PM

I dont know what Duke edited out but one thing I did when at the dealer was remove, per the manual, the wire that controls all the safety equipment. This would let you cut your dignoses time down, as you dont get paid for it.

If you have fuel, spark and air it should run.

so you dont have enough fuel. I think your on the right track. If you need a kit you can get them from the guys above. I get my stuff from my old boss here locally.

What eng dose it have in it, command 20 if I remember right.

Vince_o · #8 07-13-2011, 06:41 PM

Thought about what I posted after I left for work this morning, but the manuals and what the engineers tell you from MTD is differant that what you get over the counter.

On the safety switch thing.

aaron0000934 · #9 07-13-2011, 09:41 PM

I have diagnosed it down to the governor? I tested the solenoid on the carb and it actuates when 12v is applied. The carb has been cleaned and reassembled twice now. Tonight when I started it I left the throttle all the way down (turtle speed). It started and ran well. Then I slowly increased the throttle a little at a time. When it got to about half throttle it started to cut out and I watched the governor wig out. Then it stalled out. How does the governor work? The post it sits on goes down inside the engine. Is there any need for it? COuldnt I unhook it and it would run fine? Yes Vince the engin is a Koeler 20hp and the carb is a kiehen. Sorry Duke, thought that was common sense.

aaron0000934 · #10 07-13-2011, 09:57 PM

So I answered my question. The governor is not needed for the engine to run. But it is very important for your engine. It keeps the RPMs lower when there is load on the tractor. This link was helpful http://www.small-engines.com/govtheory.html I supose now I need to drain the oil and pull the cover off that hides the gear for the governor drive gear.