That's not much info to work with. But, assuming that you are talking about a riding mower which quits when you engage the blades, I would tell you to check out the seat safety switch. For some readon the mower doesn't think there is anyone on the seat. It will not run with the blades engaged with no one on the seat. Somewhere attached to the seat you will find a small switch with two wires going to it. It may have come unplugged or it could just be a bad switch.
Possibly a bad switch under the seat. This is a safety feature that kills the motor if you overturn the mower. Unless the seat switch is made, the motor will not run with the blades engaged. There is also a switch on the blade engagement mechanism so the mower "knows" when they are engaged.
Turn your blades off.
i had high lift blades on my mower & it would overheat. i put regular blades on it & problem went away. could be your problem
Normally you will start to hear a loud grumbling sound from underneath the mower when the blades are engaged. With the mower shut off, release the tension from the belt for the blades. Raise the deck so you can grab the blades from the bottom. You should not be able to rock the blades from side to side or up and down. If you can then you probably have a bad spindle. You can do this for wach of the spindles to check them all.
form_title= Lawn Mower Blades form_header= Keep your mower running smoothly with new blades. What is the make and model of your lawn mower?*= _ [50] How old is your mower?*= _ [50] Have you ever had to replace the blades before?*= () Yes () No
when I try to engage gears of mower blades, the engine dies under the load. Read wheels also lock when fowrad and rear gears are engaged.
What kind of lawn mower are you changing blades on?
It's a safety feature of the mower. Usually this only happens when the blades are engaged.
My Huskee mower will not mow in reverse due to a switch that kills the engine if the blades are engaged. This is very inconvenient. I removed the switch and it now mows in reverse. Do this at your own risk. I am the only person who uses my mower and it will be reinstituted when I sell the mower.
Yes new lawn mower blades are sharpened.
Be sure that when you put the unit in reverse that the blades for the mower are not engaged. That will prevent the mower from operating