Cutting Blades going too slow - Garden

sometimes when a belt is wore out it will let the tall grass stop the blades from spinning. put on a new belt and should be good.

wrong size belt. too small.

Your blades are dull or going to fast

check fuel filter and pump pressure starving for gas

A faulty switch if the blades are spinning at full cutting speed
Not cutting the current to the engaged blade clutch so the blades are stil on even when the switch is in the off position.
The blade brakes not gripping the pulleys fully to stop blades so anything brushing against the blade will start them spinning
Or the clutch medium is damaged and is not releasing the blades fully so they spin but slowly when you switch the switch they just slow down get the deck alignment switch for clutch and the wireing to the blades system checked and the braking system for the blades pulleys checked as soon as possible the machine is dangerous
With the blade continuously rotating you risk injury from the blades catching.g you or someone else who's not aware the blades don't stop.etcetera.

You may need a new belt. the adjustments may need to be adjusted as well.

the lowerer the deck the more your working the mower. either mow more often or reduce speed

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.

Probably have to go to the manufacturer. It may NOT be economical to repair the unit.