Small Engines (Lawn Mowers, etc.): belt tension, ordertree, belt tension


Question
Hi I have a murray 12.5 hp 40 inch cut ride on model no 40707x20a could you please tell me how the belt that drives the blades goes on as it keeps falling off. Thanks greg

Answer
 Hello Greg:

 The Closest Breakdown/IPL I can Find Online is at this Addy http://www.ordertree.com/cms/Parts+Lookup+Help+Page/39.html and Scroll Down and Select Manufacturer Murray and Click Go. Scroll to the Model Number 40708X20C and Click. From your Description, Either the Spring (#33) has Jumped Off or there is a Bad Idler or a Jackshaft Bearing is Bad and Allowing the Pulley to Slant/Tilt, causing the Belt to Fall Off. Check the Belt Guards on the Blade Brake Assemblies. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. Thanks.

 Good Luck

 Respectfully

 John