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Check your battery. 1. Water level 2. Low charge, (turn lights on and crank engine. If lights go right out battery is low). Put it on charger. 3. Check terminals are not loose or dirty. I have found often that a low battery or poor connections let magnetic clutch disengage. Some systems with light chargers will not bring a very low battery up while clutch is drawing power.
WITH THE ENGINE TURNED OFF, open the hood and watch the engagement cable. engage mower lever and then disengage the switch sounds happy, possibly the cable is starting to seize up
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
if you mean that when you let off the clutch pedal and/or engage the blades, the engine dies, lift the seat and make sure the connector is firmly plugged into the switch attached to the seat.
This is too late, but for the next person: There is an extension spring around the cable attached to the blade engage/disengage lever.
On my tractor one end of the spring had the hook broken off or it. Because it is around the cable it is still in place but doesn't stretch when you engage the blade (so can't pull the pulley out and slacken the belt when you disengage).
The replacement is a few dollars and can be bought on ebay or Amazon.
On later models there are possibly three safety switches, one under the seat, one for the blade engage mechanism or blade clutch so the blades don't turn when the mower is started, and a neutral safety switch to make sure the mower is in neutral before it starts.
you need to start with your electric clutch and then backwards to your idler pulleys and deck spindles and bearings.
your electric clutch should almost stop the blades instantly when disengaged ,check the center bolt in the clutch to be sure it is tight also
remove the belt from the electric clutch and energize clutch any noise? sometimes the bearing goes bad in the clutch itself.
check all of your 3 spindles for noise and loose. remove belt and spin by hand and listen for quiet and they should turn free with no binding
check blade tightness
any item the belt goes around needs to be looked at for secure and operable.
Check for bad bearing in clutch immediately, Remove belt, try and turn the clutch pulley if it is hard to turn or feels rough, replace the bearing in the clutch. If you do not replace bearing immediately you will be buying a $300.00 clutch very soon. I know from experience. You possibly have been hearing a loud unusual roar from engine area for awhile and wondered where it was coming from. As these bearing will usually squall a cry for awhile before they die.
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