Small Engines (Lawn Mowers, etc.): craftsman mower, friction disc, wheel assemblies

Question
I have a craftsman 6.75 horsepower 21" cut power-propelled mower. The model # is 917.370721. When I'm using the mower and I go to pull it backwards, the rear wheels lock and the mower is unable to go backwards. Any idea what it is?

Answer
Hello Craig:

>>From your Description it Sounds like the Wheel Assemblies Require Cleaning.
>>To View a Breakdown of this Unit Go to this Site Addy, http://www.searspartsdirect.com/partsdirect/index.action?sid=PSHx20080114x00001 and Enter the Model Numbers 917.370721 and Click Search. From this Page you can View Diagrams and Parts List.
>>Select the Drive Control/Gear Case/Wheel Diagram for a Close Up View of the Wheel Assemblies.
>>When Dirt and Dust Build up in the Wheel Assemblies, the Friction Disc (#36), the Pawl (#31) and the Other Small Components make up the Pinion.
>>Clean and Lightly Lubricating the Pinions should Correct this Problem as long as the Transmission is Not Damaged.
>>If you Hit a Snag or this Does Not Correct the Problem,  I am Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Happy. Thanks.

Good Luck

Respectfully

John

PS: I am Allowed to Answer 5 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. Comments and Ratings are Greatly Appreciated. Thanks.

Respectfully

John