Exmark lazer HP 19 Kawasaki 50" deck new PTO and new relays blades engage for 30 minutes then shut off engine on. After cooling will engage for 10 minutes then shut off

The seat occupied switch energizes the operator presence relay. This relay allows power to the PTO clutch from the PTO switch only when energized (operator in seat).

A simple test

1.PTO switch OFF
2.Ignition switch to ON position.
3.Engine not runnjng
4.Operator in seat

Pull PTO switch. You should hear the the clutch engage with a notable pop. Then turn off PTO and it will make another pop or clunk when it disengages.

Similarly with PTO engaged, if you rise from the seat it should disengage.


Also a failed charging system may allow the engine to start and run but not provide enough current to properly engage the electric PTO clutch. With engine running check battery voltage is greater than 13VDC.

The blades are engaged electrically via the PTO on the engine shaft.
Check the connector and wiring to the PTO unit, or the electrical plug on the engage switch.

Craftsman Garden Tractor 917.28746 Engine shuts off when ...

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Craftsman Garden Tractor 917.28746 Engine shuts off when engaging mower deck. 917.28746 ... Then start the tractor and pull the pto button out. If the engine ...

Why does my engine die when the blade is engaged ... - iFixit

https://www.ifixit.com/.../Why+does+my+engine+die+when+the+bl...

iFixitI have an older Murray riding lawn mower, whenever I engage the mower the engine dies, otherwise it runs .... My dr feild brush mower ... cuts off when I engage theblades. ... My Huskee only shut off once I put it in drive with the blade engage.

Riding Lawn Mower Problem - Dies when PTO engaged - GardenWeb

forums2.gardenweb.com > Garden Forums > Tractors

Apr 28, 2008 - When I pull the switch to engage the PTO, the engine bogs down real ...off I can keep the engine running with the mower engaged then it is fine ... Riding mower cuts out
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PTO issue the blade should engage even if your not moving

one side of the connector gong to the clutch needs to be a ground

heck the spark plugs for carbon build up

We had issues in the UK with issues like this, they would blacken and soot up the plugs and start to run on on cylinder, there was an internally vented carb rather than the externally vented carb to cure this.

Hi, check your belt tension, check all idler pulleys and drive pulleys for free rotation with the belt off and finally check that the belt is not bottoming out in any of the drive pulleys. If so, replace the belt. The blades should come up to speed imediately wether hot or cold and it sounds like your belt is slipping in one or more of the pulleys which drags the motor revs down until it grips. Regards Phil.

My problem is that I don't know what your problem is exactly.

The PTO switch contacts to operate the clutch that starts the blades is defective. I have replaced mine and the new one just failed again. Sears must know this is a defect problem but so far they are quiet about the problem