Question about Craftsman 21 Hp 42" Deck, Ys 4500 Lawn Tractor
Check pulleys-belt -tensioner and mandrels
Posted on Jul 25, 2017
Do the blades need sharpening? Check the belts for tightness and the spring that holds the tension. what stops? The blades stop, but the belt is still turning? Check to also make sure the blades turn freely with the belt disengaged. you may have a spindle problem too.
Posted on Jul 25, 2017
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Posted on Jan 02, 2017
It sounds to me that you need a new mower deck drive belt, or your blades need sharpening. If the blade edges are rounded, they won't cut butter... Also, when mower is off, check mower deck drive pulleys to make sure you don't have any that are locked up or are dragging. You can check this by pulling the belt away from pulley and spinning the pulley by hand. MOWER MUST BE OFF before attempting any of these checks. You would be surprised how many people would try this with the mower running.
Hope this helps
Posted on Mar 11, 2009
I have an 18 HP B&S 42" Craftsman with the same problem. Carb has been rebuilt and fuel filter replaced. Have cleaned the vent hole in the fuel tank cap. Nothing has helped. Choking the throttle will keep it running for a few more seconds but it eventually stalls out only to start again in 5-10 minutes which keeps me thinking its a fuel, not electrical problem. Maybe overheating but how can you tell if its causing vaper lock?? Submitted by Redroadster.
Posted on May 03, 2009
The only thing that makes sence is that some how te blades are the wrong ones they are not long enough . raise the tractor up set the blades so they are in line with each other they should not have more then a 1/4 inch gap if it's more you have the wrong blades.
Posted on May 23, 2011
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