Question about Cub Cadet Lawn Mower Blade Drive Belt Replaces CUB CADET 75404062

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My mower blades disengage when operating.

I bought a new pto switch but that didn't help. any suggestions would be greatly appreciated. thank you.

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Not sure of your question, but if you mean, they start when you flip the switch and then disengage but the switch stays up.. you need to check two things. (1) The out put of your alternator, read the battery with a volt meter before you start it, then start up the engine and read the voltage again should be a higher reading with the engine running. 12.4 vdc with the engine off - 13.7 vdc with it running. (just an example). Next will be your seat switch.There is a switch under the seat if you are not sitting in the seat the blades should turn off. so the switch could be out of its socket, or broken.

Posted on May 07, 2010

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2 Answers

While I was cutting grass the Engine shut down. Pulled the brake up. Push the PTO back down to shut the blades down. I started the engine, engine runs perfect.


try replacing the battery most with an electric clutch PTO have to have a really strong battery as the alternator system is not strong enough by itself

Jun 16, 2015 | Garden

1 Answer

Mower runs great, until you engagew the PTO. Brakes open fully, any suggestion?


sounds like the seat safety switch is not working. Check to see if both wires are connected to that switch. If they are.. then disconnect them, jump them together and see if mower runs Ok

Jan 03, 2014 | Husqvarna Garden

1 Answer

On my 42in cut hydro. Husqvarna, The mower will not disengage until the speed is reduced to a low idle


Before you do anything else check to make sure the blades are engaged on thier seat ( the star) and the blade bolts are tight.
If you have an electric PTO this does not apply to you.
After confirming that your blades are tight check the operation of the PTO cable and the pivot bracket by lowering the deck all the way. Laying on the ground on the discharge side of the mower you will be able to look at the components and see and touch whats not moving freely as you engage and disengage the PTO lever. Look for a stiff PTO cable, stiff pivot bracket, missing return spring, broken spindle brackets and broken deck bracket welds.
Of course you should never work on any mechanical device while it is running.

Oct 31, 2012 | Husqvarna Garden

1 Answer

Pto will not disengage


first unplug the switch and see if it still operate then disconnect the spark plugs then turn the blades threw the discharge opening and see if the engine rotates when moving the blades this will tell you if the clutch is stuck then connect the spark plug wires back on and next to the engine base you will find a 2 wire connector that feeds the clutch power and ground unplug that connector and start the mower see if the blades turn this will tell you if you have a mechanical failure if it does not operate with the wires unplugged its a electrical

Jun 13, 2012 | Oregon Scientific Electric PTO Clutch for...

1 Answer

Leplease explainon the safety switchs on mtd models660-679 work? I beleave my model is an intek twin. thank you


Hi,

The safety switch beneath the seat is only one part of the several interconnecting safety features of the modern riding mower. If the system works properly, you must be seated for the mower deck to operate. The tractor will continue running with the Power Take Off disengaged if the parking brake is set before the operator leaves the seat.The seat switch consists of two electrical contacts normally separated by an air gap. A spring creates an open space between the two contacts. Mounted between two plates, the switch's spring compresses under the weight of the person sitting in the operator seat and completes an electrical circuit. With the switch closed the tractor's ignition system can be switched on with the ignition key. If the operator stands, the spring forces the gap open and interrupts the electrical ignition circuit. The safety circuit allows the riding mower motor to continue running if the PTO is not engaged. When the parking brake is set a second switch in electrical parallel with the OPS closes. This bypasses the safety switch under the seat. If the operator stands, the parking brake switch still completes the ignition circuit.The mower blade turns only when the PTO engages. If the operator should leave the seat with the blade turning and under power, injuries could result. The mower blade would even continue spinning at full power if the machine overturned. To prevent this type of accident, engaging the PTO deactivates a connection in the original circuit and completes a second circuit in series with the OPS switch.

If the operator leaves the seat with the PTO engaged, the ignition interrupts and the machine stops. Until the PTO is off, no combination of settings will restart the mower.

Apr 05, 2011 | Garden

1 Answer

Cub Cadet 2166 series. Mower will not engage.


Unfortunately, the circuit is a little complicated - it involves the "PTO switch" (the switch you pull on to engage the mower), a "reverse switch" that senses if you've put the mower in reverse, and a relay operated by the reverse switch. The reverse switch is there to disengage the blades if you try to reverse while mowing. A failure in any of those items, or the connectors and wiring between them, will prevent the blades from engaging. Unless you want to "shotgun it" and replace parts one-by-one on a guess (which many repairmen to do save time, but at your expense) you need to use an ohmmeter or test light to trace and isolate where the failure is.

Jul 10, 2010 | Cub Cadet Garden

2 Answers

Cub Cadet LT1042 PTO won't disengage


If its an electric PTO then the switch on the dash is bad, Its a lever type ungagement then the little break shoes that rub on the blade spindles are either worn out or mis adjusted.If it started when you changed the blade drive belt its possibly the wrong belt??

Oct 25, 2009 | Cub Cadet Street Sign- tractor lawn riding...

1 Answer

Cub Cadet-Blades won't stay engaged


sounds like either a saftey switch problem or a bad drive clutch on the pto. usuallly the mower shuts down,not the blades, they may have changed this though. my best guess would be a safety sensor try calling your local cub dealer and talking to the repair person he can shed light on the problem.

Jul 24, 2009 | Mtd Garden

1 Answer

PTO knob will no longer operate cutting blade


Under the hood, there is a relay switch that is taped to the fuse. In my experience, the relay has gone bad and need to be replaced.

Jun 11, 2009 | Garden

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