Service & Maintenance Question
Hello! I am trying to replace the drive belt on my MZ6128ZT...
Service & Maintenance Question posted October 11, 2016 by Barry Prater
85 Views, 3 Comments
Question:
Hello! I am trying to replace the drive belt on my MZ6128ZT mower. I know I need to drop the clutch to remove the old belt from the drive pully. With my helper holding the flywheel nut from moving I am not able to loosen the clutch bolt. I am sure I should be going lefty-loosey to remove the clutch bolt, yes? If that is correct, does anyone have any suggestions? I am afraid of damaging the bolt. Are there alternative ways to remove and rethread the belt without having to drop the clutch?
Answer
You don't want to be using the flywheel retaining bolt or nut to help loosen the PTO clutch screw bolt.
If it has the newer style PTO there should a double flat washer at the retaining screw bolt end. This double flat would be for a 1-3/8" open ended wrench; otherwise, use a good impact wrench to loosen. And yes it is a RH screw bolt. When tightening make sure you torque it to 55-65 ft-lbs so it doesn't loosen during operation.
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Sir, thank you for your quick reply. :)
I crawled back under the mower looking for the double flat and the best I can tell it is associated with one of the IDLER PULLEYs ??
Something else I noticed is that one of the pulleys looks to be broken. I hope you can see the picture of the IDLER pulley. Does the attached picture of the pulley look like the pulley is also broken?
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No it would be on the PTO Clutch itself. Here is image pointing what I was referring to. THe orange arrows are point the flats.
Also pulley in your picture appears to be completely missing the bearings.
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