View Full Version : Lower engine pully
JDAD
Jul 26, 2009, 10:44 AM
I have an older murray riding mower.. it starts great. But now won't go forward or backward. The belts are OK. But when I try to put it in forward or reverse, nothing happens.. in gear the pulley on the bottom of the mower doesn't turn.. any ideas? Thanks
ballengerb1
Jul 26, 2009, 01:54 PM
Does the shaft inside that pulley turn, your may have a broken key.
JDAD
Jul 26, 2009, 03:24 PM
I didn't check that... I had someone else looking from underneath as I started it.
Thanks for the tip will try
ballengerb1
Jul 26, 2009, 03:48 PM
You can do that more safely by pulling the spark plug wire and just crank the engine. If the shaft turns but not the pulley you are in the market for a $ .25 key
JDAD
Jul 26, 2009, 05:25 PM
Thanks I will try that tomorrow night after work
JDAD
Jul 26, 2009, 05:26 PM
OK, so not sounding to stupid.. where abouts is the key? Hey I sell building materials am not a mechanic :-)
crigby
Jul 26, 2009, 06:40 PM
Hi,
If it has an actual key, it fits half in the crankshaft and half in the stack pulley. It is rare that the key shears unless the bolt comes loose as it is a 1/4" key. The pulley itself may have a place where a machine stamped the equivalent of a key in it. Far more common to have it strip.
Peace,
Clarke