Mower kills battery while cutting grass, it willrun if i dont cut it off, but it is to weak to turn blades back on if i turn them off,this has done this scence new, tried new batterys but did not help.

Mulch plugs are typically a cover that is affixed to the discharge chute of a mower deck. As blades spin, they cut grass, and lift them up into the swirling air above the cut grass and below the mower deck. The clippings are suspended until they are blown out of the chute.

Mulching, is the process where grass clippings aren't simply discharged out of the chute after cutting; rather they are kept under the mower deck and spin around suspended in the blades resulting in repeatedly being cut. Instead of long clippings exiting the chute, much smaller clipping result from multiple cuttings and settle back on to the lawn under the deck. The smaller clipping allows them to decompose much quicker and return nutrients to the lawn.

Long clippings take longer to decompose and can turn into thatch on top of soil between blades of grass - effectively smothering the lawn. Long clippings can sit on top of cut grass and choke off sunlight, etc. and cause dead spots. Thatch can occur with mulching too - but takes longer to accumulate.

I nearly always mulch

be sure the blades are not bent and you dont feel any wiggle when pushing them up and down. be sure nothing is wrapped around the spindles. be sure the belt isnt damaged and tight when the deck is engaged to cut with the engine off.

Tony you may be cutting too much too soon. Try running over the grass slowly with the back guard opened slightly so any grass can still spill onto the ground. When youv'e done one run put the grass box on and go over half a width of the mower at a time but start on a reasonable height.

Hello,

The reason the blade slows down when the grass gets thick is simply because the mechanism operating the blade is weak and cannot move fast when on thick grass.

I suggest you troubleshoot the mower. After that, the blade should work fine when the grass gets thick.

Also, some mowers normally gets slow when grass gets thick, so after troubleshooting, if the mower does the same, then you already know it has to be slow when trying to cut thick grasses.

Take care

With mower off check the blades, its easy to put them on upside down which kills the cutting and bagging.

If the grass is very tall (more than 10") you will have to slow down to less than 1 mph, if you have a mulch kit on this unit, remove it to get the grass out as quickly as possible. Also, sharp blades & a level deck are important.

Good advice from bbenson6 (above), and check this: The mower has a seat switch that kills the mower if the operator gets off the seat with the blaqdes engaged. A bad seat switch would kill your mower every time.
Regared!! --W/D--

I hope this will help you...under the side panels on each side of the mower, there are "reverse lockout safety switches", they are supposed to stop the blades when both handles are pulled back. If one or both of the switches are out, the deck will not engage. Also, under the right side panel (when sitting on seat) there should be 3 relay switches, the one closest to the motor controls the PTO., if this is out, the PTO will not engage.

my jx85 when cutting grass with my jx85 the power to the blade dies if i lift it up the power will come back put it back into grass it dies again any ideas please

is the mower belt on the pulley ?