It sounds like your enigne needs a tune up. An engine that is not running as strong as it should will have little effect while running without the blades engaged. Once you engge the blades and put that extra strain on the engine it will show that there is something wrong.
You can start with just a new set of spark plugs. You might get by with just replacing them. If not, you may have to have a mechanic look at it for carburetor cleaning, carb adjusting, coil cleaning or replacement...
look for the engage switch that has a picture of blades
why does my rider cut off when i engage the blades
check to be sure the blades have free movement. usually if you have this problem it is caused from something stopping the blades from rotating therefore it stops the engine
how do you change the blade from a troy bilt riding mower
If you are saying that the mower shuts off when you engage the blades (or put the lever for the blades in the up position) then the most common problem is a bad seat safety switch. This is located under the seat. It has two wires going to it.
You can lift a riding lawn mower with a car or floor jack in order to change the blades. Simply place the jack under the frame of the lawn mower but away from the blades to lift it. Then, block the mower up using bricks or concrete blocks.
have u tried looking in the manual
Turn your blades off.
Most of the time on consumer mower they use single blades on the smaller mowers. (33" and smaller)
I do not have any schematics for the Kgro Power Prow riding mower. The blades have stopped engaging. Joe M
2 21inch blades.
Right Hand