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bronco

mower problems

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Just some food for thought, I've never worked on a 314, but assuming they are close to the machines I've worked on: Have you ever run your machine with this mower deck, belt and PTO before? OR...are you just setting this up? If you've run this before, I can't guess the next diagnosis question at this point. Though if you are just setting this up, my first question would be are you engaging the spring lever which tightens the PTO back from the deck putting tension on the belt. If yes to that question, then the second question is, are you using the larger of the double pulley (assuming a 314 has the same double pulley on the PTO <--- note I am starting to get out of my experience circle).

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Salthart
a few rules of thumb on belt drives ( as I have learned over the years ) Lay the belt on its side on a flat surface if there is a spot that stays in the air you likely have broken cords in it. Look for burned places along the length and or breaks in the belt. Also twists. If you have any of these replace the belt. If all this is ok, Start checking pulleys. I have seen the bearings in a deck so bad that when they hit a tuff spot in grass etc they will allow the pulley to move out of line and throw the belt. Make sure you tension idler arm is free with no tight spots in it. Not even a little bit. Though it may seem fast to you, if its the least bit sticky it can allow slack and a split second is all it takes.. Last thing I can think of is to turn the stack pulley on the deck while watching the edge to see if there is a warp..Good luck

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DaveM
There should be two belt guides on your mower deck. They are located in front of the drive pulley on your deck and look like a coulple of coat hanger-sized stiff wires sticking up from the deck. If these are missing, or are not properly adjusted, the belt will jump off. They basically keep the belt traveling in a straight line to the deck's drive pulley. DaveM

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bronco
quote:
Originally posted by Salthart
a few rules of thumb on belt drives ( as I have learned over the years ) Lay the belt on its side on a flat surface if there is a spot that stays in the air you likely have broken cords in it. Look for burned places along the length and or breaks in the belt. Also twists. If you have any of these replace the belt. If all this is ok, Start checking pulleys. I have seen the bearings in a deck so bad that when they hit a tuff spot in grass etc they will allow the pulley to move out of line and throw the belt. Make sure you tension idler arm is free with no tight spots in it. Not even a little bit. Though it may seem fast to you, if its the least bit sticky it can allow slack and a split second is all it takes.. Last thing I can think of is to turn the stack pulley on the deck while watching the edge to see if there is a warp..Good luck

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