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Tension Idler Spring setting

Discussion in 'Hustler Turf Equip (Archived)' started by BEAR5614, Sep 5, 2007.

  1. BEAR5614

    BEAR5614 LawnSite Member
    Messages: 8

    I have a Mini Z [20/52] with 110 hours on the meter.

    The belt that drives the blades slips onto the lower rim of the Tension Idler pulley - with the blade height set at 3.5"

    Last night I adjusted [tightened] the spring [using the chain with the links that fit into a slot]. I lengthened the spring to 8 1/2" - it was at 8", that is, I pulled the chain out one link. This measurement of 8 1/2" is the full length of the spring - hook to hook.

    I then mowed about 1 acre, and the belt did not slip onto the rim of the Tension Idler - yet.

    Question - what is the correct adjustment, or is the belt just worn/stretched and should be replaced?? Or is there something additional to adjust?

    Thanks in advance.
  2. mowerconsultant

    mowerconsultant LawnSite Fanatic
    Male, from Syracuse, NY
    Messages: 9,769

    Here is a link to the parts manual that has the adjustment procedure in it.

    http://www.hustlerturfequipment.com/Manual/manuals pdfs/Parts Manuals/302612 _0505.pdf

    Here is what it says.

    Deck drive belt adjustment
    The spindle belt tension remains constant by means of a tension idler and
    spring (Fig. 11-30). The spring tension should be such that the belt does
    not slip under normal operating load conditions, assuming the belt is not excessively worn or damaged. As belt stretches and wears in, adjustment
    may become necessary. To increase belt tension, move the spring chain
    one (or more) link(s) at the anchor bracket (Fig. 11-30). Installed spring
    length should be 7.75" ± .3" (19.7 cm ± .76 cm)
    originally with adjustments
    of .60" (15.2mm) per chain link. (Fig. 11-31)
    IMPORTANT: Do not over tension the spring to compensate for a
    badly worn belt or pulley.

    It sounds like your belt is stretched, but it shouldnt be with only 110 hours.
    How many links in the chain do you have left?
    Your deck pulleys aren't rusted in the grooves are they?

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