kebo
Elite Member
- Joined
- May 16, 2006
- Messages
- 2,928
- Location
- Lexington, SC
- Tractor
- 2001 John Deere 790 4x4, bar tires
I bought a used Sitrex SM-150 5ft mower around January of last year and I finally got both the belts and blades replaced on it. It cut ok with dull blades when I got it, but around last September, the belts (which had a lot of cracking when I bought it) shredded themselves cutting the grass at my parent's place so I just parked it and finished up the cutting season with their 42" Craftsman riding mower. I ordered the new belts & blades from a place in Texas that someone here on the forum told me about, I think it is the Sitrex parts distributor.
Here are pic's showing the new belts in place before I put the covers back on. If you look at the pic showing the pulleys, the belts have to go on above the double pulley on the center spindle first, then underneath the double pulley on the bottom of the gearbox. This was easy enough to do by removing three bolts on the end of the mounting plate, and then removing four nuts that lock the gear box in place when you adjust the belt tension. Once you remove them, you can raise up the plate and/or the gear box and snake the belts in place. Put the bolts back on, adjust the tension, and the lock it all down and that part's done.
For the blades, I used the FEL to stand it up on the "trailing edge"(rear of the deck) and then I chained it to the rampgate of my 16ft trailer so I didn't have to worry about the deck falling on me. It takes a wrench (forget the exact size but I think it's a 19mm) to hold the spindle in place, and then a 27mm socket to remove the nut on the end of each spindle. Two of the nuts took a 28" breaker bar to loosen up, but the third nut wasn't so tight. Got it all back together and now it cuts like a new mower!
Here are pic's showing the new belts in place before I put the covers back on. If you look at the pic showing the pulleys, the belts have to go on above the double pulley on the center spindle first, then underneath the double pulley on the bottom of the gearbox. This was easy enough to do by removing three bolts on the end of the mounting plate, and then removing four nuts that lock the gear box in place when you adjust the belt tension. Once you remove them, you can raise up the plate and/or the gear box and snake the belts in place. Put the bolts back on, adjust the tension, and the lock it all down and that part's done.
For the blades, I used the FEL to stand it up on the "trailing edge"(rear of the deck) and then I chained it to the rampgate of my 16ft trailer so I didn't have to worry about the deck falling on me. It takes a wrench (forget the exact size but I think it's a 19mm) to hold the spindle in place, and then a 27mm socket to remove the nut on the end of each spindle. Two of the nuts took a 28" breaker bar to loosen up, but the third nut wasn't so tight. Got it all back together and now it cuts like a new mower!
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