JD Z425 drive belt tension spring

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PecanJohn

Forum Newbie
Hi group, New member here. After 9 years the drive belt finally gave up. After 3 hours I have the new belt installed except for the tension spring. The spring came loose from the mower end and was hanging from the tension lever when the belt broke. For the life of me I can't figure out where it attaches to the mower. I've looked at every picture I could find on the internet to no avail. The manual shows the spring, but not the attachment point. Can any of you help out.
Thanks
John, Grand Bay, Alabama
 
There are 3 different engine and hydro configurations for the z425. If it is the one with separate pump/hydros for each wheel with the angled idlers the spring attaches to the left side frame. If the mower is old the spring will have stretched and won't put enough tension on the belt and it slips. Either new sprong or use zip ties to close up a few coils of spring.
 
Hammermechanicman said:
There are 3 different engine and hydro configurations for the z425. If it is the one with separate pump/hydros for each wheel with the angled idlers the spring attaches to the left side frame. If the mower is old the spring will have stretched and won't put enough tension on the belt and it slips. Either new sprong or use zip ties to close up a few coils of spring.
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You were right, thank you. I did have the angled islets. I thought the anchor point was just a bolt hanging down, but once Iaid down on the floor I could see the groove the spring went in. The hardest part of the belt change was to get the belt over the drive fans.
 
Hammermechanicman said:
Yup changed a few of those. Real tight over the fans.
Click to expand...

Hammermechanicman, I am replacing the same belt and am having a very difficult time finding out where the spring attaches to the frame....found the location on the arm but not on the frame. Would appreciate your assistance.​

 
Sorry to reviving an old thread, not many topics related to this so hoping to keep them in the same place.

Also having some issues finding the spring mounting point. From the parts list it should be connecting through the hole in the middle of the arm? Or should it be on the end of the arm?
 

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Made sense to me too. Adding a few photos if anyone runs across this again. Runs good after installing new spring
 

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