Description
Hustler OEM 601016 Tension & Return Spring
The Hustler OEM 781302 Idler Arm Tension & Return Spring is made for a Couple Different Applications and Built to Hustler OEM Replacement Part Fitment & Standards.
⚠️ Before You Order – Verify Fitment
Hustler Uses Multiple Mower Deck Belt Springs, Hydraulic Tension Springs, Brake Return Springs that May Appear Similar but Vary by Application, Mower Series, and Production Version. So Be Sure to Refer to the Model Fit Chart (@ The Bottom of the Page) & The Many Other References Below for an Accurate Break down of Specific Model Number Usage Before Ordering.
Not sure? Contact us with your Hustler Model and Serial Number and We’ll Help Verify Fitment.
Part Details
- Brand: Hustler
- Part Number: 781302
- Supersession: Part Number 839-065C, 839065C Superseded to Part Number 781302.
- Part Type: Tension Spring
- Application: Hydro Belt Tension / Idler System – Mower Deck Belt Tension / Idler System – Brake Return Tension / Brake Linkage
- Length: 6.25″ or 6 1/4 IN.
- Width: 1.50″ or 1 1/2 IN.
Usages & Adjustment Helps
781302 Spring is used on the Following Applications:
- X-ONE, X-RIDE, Super Z, Super Z HD, Diesel Z, Super SF, Super 88 and Super 104, Trimstar (Model 9292320 – Usage Depending on Idler Pulley Size Refer To The Images Above) – Mower Deck – Attaches to the Idler Tensioner Slide and Provides Tension Between the Idler Pulley and the Mower Deck Belt – Spring Tension Measurement Necessary for Models With a Tensioner Link Chain or Slide Refer to the Adj Direction Below.
For Models with a Chain Tensioner, Correct Mower Deck Belt Tension is Necessary. On Models with a 781302 Spring, Slide Tensioner and Chain – Hustler uses a **spring measurement from outside hook to outside hook** – Spring measurement from hook to hook should be 9.3 in. – 10.0 in. Review the Image Below for example of Measurement. (For Additional Spring Measurement Length Refer to manufacturer notes in Mower Deck Belt routing section of Service Manual).
NOTE: Some Hustler Super 104 Models will use Two Different Mower Deck Tension Springs Part Number 781302 and Part Number 607616. Above in the Images The correct placement for 781302 should be Marked with A Yellow Dot (On the Tension Slide) and the correct placement for Part Number 607616 should be Marked with a Green Dot (On the Tension Arm). Part Number 781302 should be Thicker with a Thicker Tang and more Pyramid Design. Part Number 607616 should be Narrower and have a Narrower Tang with a Straighter Design. To be Redirected Click on Part Number 607616.
- X-ONE – Hydraulic Tensioner Arms – The Hydraulic Tension Spring Is Retain by Threaded Eye Bolt and Does Require Spring Tension – Refer Below for Proper Hydraulic Spring Tension Measurement.
- FasTrak – Mower Deck – Attaches to the Idler Tensioner Arm or Slide and Provides Tension Between the Idler Pulley and the Mower Deck Belt – Spring Tension Measurement Not Necessary for Models Without a Tensioner Link Chain (or Modes with a Tensioner Arm Instead of a Slide) for Model with a Tensioner Link Chain or Slide Refer to the Adj. Direction Below.
For Models with a Chain Tensioner, Correct Mower Deck Belt Tension is Necessary. On Models with a 781302 Spring, Slide Tensioner and Chain – Hustler uses a **spring measurement from outside hook to outside hook** – Spring measurement from hook to hook should be 9.3 in. – 10.0 in. Review the Image Below for example of Measurement. (For Additional Spring Measurement Length Refer to manufacturer notes in Mower Deck Belt routing section of Service Manual).
NOTE: Due to a change within Model/Series Hustler FasTracks Might overlap Between two different Mower Deck Spring Part Numbers. Check the Model Fit Chart Below to Verify Your Model is Listed. A Common Visual indicator as to which one is the correct Mower Deck Tension Spring for your Unit is by comparing the Measurements with Measurement in the Images Above. Hustler OEM 781302 (Which is the Newer Version) should Be Thicker, have a Wider Tang and more Pyramid Shaped than 607616 Mower Deck Tension Spring which should have a Narrower Tang, Overall Width should be Narrower and a Straighter in Design. If you have a Narrower, Straighter Mower Deck Tension Spring And need to be redirected, click on Part Number 607616.
- Super S – Hydraulic Tensioner Arms and Brake Return Linkage – Park Brake Return Does Not Need Any Adj. However, the Hydraulic Tension Spring Is Retain by Threaded Bolt and Does Require Spring Tension – Refer Below for Proper Hydraulic Spring Tension Measurement. 781302 is Not Used 36″ Models (Refer To 606380) as The Hydraulic Tensioner Spring and Only Used in the Brake Return Linkage.
Model Fit Chart
Trimstar
929320
FasTrack (All Models – PTO Clutch) * Mower Deck
941724, 941732, 941740, 941757, 941765, 941773, 941781, 941674, 941682, 941708, 943704, 943753, 943761
X-ONE (2016 – Current Models) * Mower Deck & Hydraulic Tensioner Arm
936237, 936245US, 936252, 936260, 936278, 936286, 936294US, 936302, 936310, 936328, 936336, 936740, 936765, 936773, 936781, 936799, 936815, 936823, 936831, 936849, 939314, 939322, 940056, 940064, 940072, 940080, 940106, 940114, 940122, 940130, 940197, 941062, 941070, 941369, 941831, 941856, 941864, 941872, 941880, 941898, 941922, 941930, 941971, 942201, 942334, 942797, 943399, 943407, 943787, 943795, 943803, 943811, 943829, 943837, 943845
Super Z (2011 – Current Models) * Mower Deck
929927, 929935, 929943, 929950, 930024, 930065, 930875, 931048, 932012, 932020, 932038, 932046, 932053, 932061, 932129, 932137, 932970, 932988, 933457, 933929US, 934216, 934224, 934232, 934240, 934265, 934273, 934281, 934984US, 934992, 935007, 935015US, 935023, 935031, 935049, 935056US, 935064, 936872, 936880, 936898US, 936914, 936922, 936930, 936948US, 936955, 936989, 937714, 937722, 937730, 938985, 938993, 940031, 940049, 941138, 941146, 941153, 941161, 941179, 941187, 941195, 941203, 941377, 941385, 942342, 942771, 942763, 942805, 942813, 942821, 942839, 942854, 942862, 942870, 942888, 942896, 942912, 942920, 943852, 943860, 943878, 943886, 943894, 943910, 943928, 943936, 943944
Super Z Hyper Drive (All Models) * Mower Deck
932145, 932152, 932160, 932178, 932186, 932996, 933002, 934315, 934307, 934323, 934349, 934687, 934695, 934919, 934927, 934935, 934943, 934950, 934968, 934976, 936997, 937003, 937011, 937029, 937037, 937045, 937052, 937110, 939561, 939579, 939587, 939595, 941229, 941237, 941245, 941252, 941260, 941278, 941286, 941294, 941302, 941310, 941534, 941542, 941559, 941567, 942219, 942227, 942235, 942243, 942250, 942359, 942961, 942979, 942995, 943001, 943019, 943027, 943035, 943043, 943050, 943068, 943951, 943969, 943977, 943993, 943985, 944017, 944041, 944025, 944033
Diesel Z (2025 – Earlier Models) * Mower Deck
938233US, 938241US, 938258US, 938266US, 940452US, 940460US, 940478US, 940486US, 943233US, 943241US, 943249US, 943266US
Super ATZ
No Listed Model Numbers
Super 104 (All Models) * Mower Deck
937201, 937219, 939462, 939470, 939603, 939652, 941005, 941526, 942318, 943217, 943225, 944058, 944066
Super S (All Models) * Parking Brake Linkage & Hydraulic Tensioner Arm
781302 is Not Used 36″ Models (Refer To 606380) as The Hydraulic Tensioner Spring and Only Used in the Brake Return Linkage.
933325, 933333, 933341, 933358, 935353, 935361, 935387US, 935395US, 937128, 937136, 937144, 937151, 937169, 937177, 939439, 939447, 939454, 940205, 940213, 940221, 940247, 940254, 940288, 940296, 940304, 941393, 942292, 943126, 943134, 943142, 943167, 943175
Super SF (All Models) * Mower Deck
942029, 942037, 942045, 942052, 943506, 943514, 943522, 943530
Super 88 (All Models) * Mower Deck
936617, 939546
Hustler Sport, Mini Z & Super Mini Z
Model Numbers Not Listed
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