I have a John Deere 425 60" mower and I would like to get some answers on how to go about changing the Mower deck belt. I have looked on this site for a couple of hours and can't seem to find the right thread. Anybody want to help or point me in the right direction?
Mower Belt
Paleohunter
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I have a John Deere 425 60" mower and I would like to get some answers on how to go about changing the Mower deck belt. I have looked on this site for a couple of hours and can't seem to find the right thread. Anybody want to help or point me in the right direction?
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![IMG_2041[1].jpg](/d2/attachments/779/779754-dcd7cb09492eb3ca495caf606199a7f6.jpg)
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Yes, I can't figure out how to get the belt loose in order to take it off...
One of the pulleys will have a spring loaded tensioner. Release the spring tension (various methods, just depends on the deck) and then the belt will come off.
If there isn't a little sticker on the deck showing the belt routing, DRAW ONE!
(don't ask.)
If there isn't a little sticker on the deck showing the belt routing, DRAW ONE!
(don't ask.)First step is to disconnect the shaft drive from the transmission. There is a slide coupling which gets pulled forward, like an air fitting then slide the coupling off. Clean and regrease this coupling before reinstalling. Remove the belt guards on both sides of deck. There is a motion limiting bumper that must be loosened next; then remove the spring on the tensioner. There may be an idler pulley that has to be removed, but I don't remember. Buy $90 belt. As mentioned, make a detailed drawing before removing belt.! While in there lube all 12 fittings with 2 shots of JD high pressure grease. And remove the side plug in the gear box to check fluid level. Uses JD type GL lube or synthetic will work. The fluid should be at the bottom of the fill hole. You could also hand rotate the shafts and idlers to check for roughness. They should feel smooth. Do not use an automotive type belt if you value longevity. They cannot stand up to the potential stress.
If you want to remove the deck, lift the tractor with a come-a long or winch and pull the deck out to the front. Good luck. Larry
If you want to remove the deck, lift the tractor with a come-a long or winch and pull the deck out to the front. Good luck. Larry
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Thanks for the quick answers, I will check after work and see if I can find the spring loaded tensioner...??
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You may also have to remove the gearbox to get clearance around the drive pulley. You might be able to remove (2) of the bolts and pivot the gearbox up. It works that way on some of the newer decks, not sure about the 60.
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I just rebuilt an older 60 deck like you'd find on a 425 and you definitely need to raise or remove the gearbox to change the belt. Ditto on the tensioner spring. No need to remove it, but you'll have to push the arm forward to relieve the tension while removing the belt. As previously stated, I also recommend taking pics from several angles to document the routing.
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