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  1. #1
    Silver Member
    Join Date
    Jan 2004
    Posts
    108
    Location
    Eastern, Pa.
    Tractor
    NH TC33D

    Default Boomer -MMM Belt adjustment ,914A , 60in.

    I put a new belt on the mower and the adjustment bolt is 2 inches off from the previous setting with the old belt. The 2 in. difference is after I adjusted to the recomended 5 9/16th in spring length on the tension spring. Belt felt too tight after I tried adjusting up to the previous mark I had placed on the adjusting bolt prior to removal. So then I got out the manual and adjusted to their setting. Belt is OEM , same part #. Old belt was 9-10 yrs old. Havent put deck on and warmed up the belt yet at speed. I heard that a good belt shouldnt loosen up with use after fresh install. Anyone been through this? Tractor and deck are 1999 TC33D
    TC33D, 7308 loader, 914 60in. mmm, acre-ease wing mowers, 7 ft rear blade, etc.

  2. #2
    Silver Member
    Join Date
    Jan 2004
    Posts
    108
    Location
    Eastern, Pa.
    Tractor
    NH TC33D

    Default Re: Boomer -MMM Belt adjustment ,914A , 60in.

    Dealer says adjust to spec in book , which is a spring length of 5 9/16in. , maybe after a few runs things will settle out and require an adjustment.
    TC33D, 7308 loader, 914 60in. mmm, acre-ease wing mowers, 7 ft rear blade, etc.

  3. #3
    Super Member RickB's Avatar
    Join Date
    Sep 2000
    Posts
    7,483
    Location
    Eastern NY
    Tractor
    Case 885, Ford 4000

    Default Re: Boomer -MMM Belt adjustment ,914A , 60in.

    Your dealer is correct. Spring length is the key factor in belt tension. Bolt length is a function of belt length and width. Bolt length is meaningless so long as you can get the correct spring length.
    We have too much gun control.
    What we need is more idiot control.

  4. #4
    New Member
    Join Date
    Feb 2008
    Posts
    23
    Location
    Top of WV
    Tractor
    TC34DA and 1951 8N

    Default Re: Boomer -MMM Belt adjustment ,914A , 60in.

    I have the same deck and my belt broke after 20 hrs. When I was installing the new belt, I found that the tensioner had been cranked up all the way from either Mexico or the dealer. My dealer would not cover the cost of the new belt. I made him note the condition on my records in case I have any spindle problems later on.
    1951 8N, 216 JD, 782 CC, TC34DA 240TL FEL, MMM, 4' Lands Pride BH, RB (may trade all for Stroker Bass Boat)

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