1972LEMONS 0 #1 Posted May 22, 2017 Have a mid 80's 417A, the deck I have is from a mid 80's 3 series. Lately, I have been have belt issues. The belt bounces as the PTO is engauged. I am thinking it is a pulley related problem. Thanks Share this post Link to post Share on other sites
953 nut 51,627 #2 Posted May 22, 2017 with the drive belt off, see if the deck is turning freely. May have a problem developing down there. Also, inspect the belt to see it is in good condition. Share this post Link to post Share on other sites
daveoman1966 3,610 #3 Posted May 23, 2017 Could be several causes: 1) belt tension too loose 2) belt has chunks broken out of it 3) drag in pulley(s) of mule drive 4) MOST LIKELY: the sliding spring tension bar is stuck and won't slide 5) idler pulley or deck spindle pulleys with drag..... 6)scratchin' head for more causes... 1 Share this post Link to post Share on other sites
tunahead72 2,337 #4 Posted May 24, 2017 I get this problem every once in a while with both of my decks, same general era, especially when I've had the deck disconnected for some reason. Tightening the belt almost always helps, but I suspect Richard and Dave are on the right track with other possibilities. 1 Share this post Link to post Share on other sites
daveoman1966 3,610 #5 Posted May 24, 2017 I, for one, am a strong believer in using only OEM belts. Many on here will point you to their use of aftermarket from NAPA, TSC, or the like and they have had MOSTLY good experience with them. However, I have NEVER had an issue with any OEM belt ...hands down, without fail...even if a few bux more.. 1 Share this post Link to post Share on other sites
Tankman 3,515 #6 Posted May 26, 2017 Try Huskee Kevlar belts. Usually on the shelf at TSC. Inexpensive, never had one fail. Kevlar belts are green = Oil resistant. Share this post Link to post Share on other sites
1972LEMONS 0 #7 Posted May 26, 2017 Thanks for the input on this. I have taken a closer look at the spindles, pulleys, etc... I will be replacing the 2 idler pulleys, 1 spindle pulley and 1 mule gear pulley. I have an OEM belt and an after market one available. Looks like I will be using the self-propelled mover again this week until the parts come in. Share this post Link to post Share on other sites