QuestionI have a Craftsman 16.5 HP Lawn Tractor with a 42" mowing deck. At the end of last season, I hit a stump, causing vibration when mower deck engaged. I thought a blade was damaged and was going to replace it at beginning of next season (this spring). One blade got slightly bent. Took off BOTH blades, engaged deck, and still have vibration. I started the engine, engaged the deck (without blades) & looked at the deck. The idler pulley seems to be moving somewhat, causing the vibration (or pulsing).
I don't know what it might be. I checked all the bearings, I lubricated them, and they all spin freely. Is it a damaged belt, I was thinking maybe the tensioning spring on the idler pulley is weak. To tell the truth, I am stumped (no pun intended).
I am no expert on tractors and am desperate for help. The Sears Craftsman tractor is #917.271141. The deck is 42" wide (listed as part #169583 in owners manual).
AnswerHello Alex:
Check for Vibration with New Blades Installed on the Deck. The Blades Act like a Balancer for the Spindle Assemblies. If the Deck Vibrates with New Blades, then Check the Spindle that had the Bent Blade. Most Likely the Spindle Shaft is Bent and is Causing the Vibration. The Belt Idler is Supposed to Pulse like you Described. To View a Breakdown of this Unit Go to this Site Addy, http://www3.sears.com/ and Enter the Model Numbers and Click Search. From this Page you can View Diagrams or Parts Lists for you Equipment. 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. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 10 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. Thanks.
Respectfully
John
