Save More with DMORR - Deck belt replacement on a Toro LX420 lawn tractor.

Save More with DMORR - Deck belt replacement on a Toro LX420 lawn tractor.

[@bobbykincannon1613]

Good Job!, I am getting ready to put a new mower belt on my toro 8-25 but back surgery makes it hard to lift etc. but like you said first time for anything!

[@Dakota-kg4tr]

OEM the belt is 109" On a 06 lx420 with normal wear a 108" works very nicely

[@crcmoto3751]

8:34 is it supposed to go through that guard he's talking about?

[@crcmoto3751]

So does it not go through the guard on the right blade pulley? The diagram is bullshit. It shows that the two blade drive pulleys are symmetrical across the deck which they aren't, the right blade pulley is further back then the left... So now I'm stuck wondering if it's supposed go though the right blade pulley guard that can be moved when moving the front idle pulley. I put it through the guard on my last belt and it made the deck bounce around do after one second I shut the mower off and took it out that guard and it ran great. Only problem is I broke the belt on my first attempt cutting grass. Ran good for an hour then belt broke as I was on my last patch of grass. So now I'm putting a new one on and am not sure. I have everything lined up and tightened but my only question is how is the belt supposed to route going straight across on the bottom of the back of the deck. Diagram shows it going straight across just under the rear idle pulley. So confusing to try to explain in text haha. Also seems like the belt has a little bit of slack in it. It is the correct belt though and it is through the pulleys exactly how the diagram shows. Just don't want to break another belt.

[@JuanLopez-yj3lb]

Can you tell me what size belt you use? I have the same tractor can't find the right size thanks

[@norlansanchez597]

Did you found the right size already

[@bobbykincannon1613]

They have a formula to figure it out. A guy did it on my small rider, if u have the old belt you can measure it or part of it (not sure) and then use a formula someyhing like "pi x length"or something then you can get an automotive belt that works.

[@deeduvall1448]

Why wouldn't you just drop the deck it would have been a lot easier to change the belts on your tractor, I have the LX 425 which is actually the same diagram as yours. this way you would not have had to loosen any of your pulley's and took less time to set the belt and you could have cleaned everything out too. ad the pulley you did loosen looks to be tilted. good luck !

[@crcmoto3751]

You would still have too loosen the two pulleys whether you drop the deck or not. But dropping the deck will make it easier for sure.