Description
Hustler OEM 606780 Grease Seal
Hustler OEM 606780 Front Caster Fork Wheel Assembly Seal is used in the Front Caster Fork Wheel Assembly and is installed Inside Both Wheel Hubs Against Both Outer Wheel Bearing Surfaces. 606780 Caster Wheel Assembly Seal is Designed to keep Contaminants Out and Grease/Lubrication In, This Seal Plays a Critical Role in Extending the life of the Front Caster Wheel Bearings.
⚠️ Before You Order – Verify Fitment
Front Caster Wheel Assembly Seals can vary by Diameter and Application. Please Confirm Your Exact Model Number is Listed in the Model Fit Chart Below Before Ordering. Select Early Model Super Z, Super Z HD & X-One Came with a Different Style Bearings and Other Wheel Components on Factory Installed Wheel Components However, All New Replacement Wheels For these Models will Come with the Latest Version of Bearings & Wheel Components – These Models are Differentiated in the Model Fit Chart.
Not Sure? Contact Us with Your Hustler Model and Serial Number and We’ll Help Verify Fitment.
What This Part Does
- Keeps Dirt, Debris, and Moisture out of Internal Components
- Retains Grease & Lubrication for Longer Component Life
- Helps Prevent Premature Bearing and Caster Wheel Failure
- Genuine Hustler OEM Replacement for Proper Fit & Performance
Fits Select Hustler Models
Known Fitment Family References Include:
- Trimstar Series: (2020 – Current)
- Surfer PRO Series: (All Models)
- Fastrack Series: (2022 – Current)
- X-ONE Series: (2016 – Current) * Select Early Models Came with a Different Style Bearing and Other Wheel Components – All New Replacement Wheels For these Models will Come with the Latest Version of Bearings & Wheel Components
- Super S Series: (2021 – Current) * 48″, 52″ & 60″ Models Only
- Super SF Series: (All Models)
- Super Z Series: (2011 – Current) * Select Early Models Came with a Different Style Bearing and Other Wheel Components – All New Replacement Wheels For these Models will Come with the Latest Version of Bearings & Wheel Components
- Super Z HD Series: (2013 – Current) * Select Early Models Came with a Different Style Bearing and Other Wheel Components – All New Replacement Wheels For these Models will Come with the Latest Version of Bearings & Wheel Components
- Diesel Z Series: (2025 – Earlier)
- Super 88 Series: (All Models)
- Super 104 Series: (All Models)
Associated Parts List
WHEEL ASSEMBLY COMPONENTS
- 606815 – Dust Cap – Reference Number 1 * All Models Excluding Surfer PRO & Trimstar Series
- 606779 – Dust Cap – Reference Number 1 * Only on Surfer PRO & Trimstar Models
- 606780 – Seal – Reference Number 2
- 606778 – Spacer – Reference Number 3
- 606753P – Tapered Roller Bearing Assembly – Reference Number 4 * Comes with the Tapered Roller Bearing and Bearing Race.
- 606126 – Grease Fitting/Zirk (M8 x 1.0) – Reference Number 5 * All Models Excluding Surfer PRO & Trimstar Series
- 606777 – Grease Fitting/Zirk – Reference Number 5 * Only on Surfer PRO & Trimstar Models
- 019521 – Tire Valve Stem (TR412) – Reference Number 6
- 606753 KIT – Kit Includes Tapered Roller Bearing x 2, Bearing Race x 2, Lower Seal x2 (Bearings and Seals Necessary to Rebuild one Wheel) – Part Reference 2 & 4
SPECIAL TOOL
- 124351 – Race Installation Kit
Suggested Front Wheel Links
When Redirecting to Different Part Numbers Be Sure to Verify your Model Number is Listed Under the Part Number Listing in the Model Fit Chart Before Purchasing.
Surfer PRO Series – Trimstar Series
606740 – 606741 (11 x 4.00 -5)
Super S Series
606742 (13 x 5.00 -6) – 606744 – 606745 – 607317 – 607964 (13 x 6.50 – 6)
FastTrack Series – X-ONE Series – X-RIDE Series – Super Z Series – Super Z HD Series – Super SF Series – Super 88 Series
606744 – 606745 – 607317 – 607964 (13 x 6.50 – 6)
Super 104 Series
606746 – 607528 (15 x 6.00 -6)
Assembly Notes
WHEN CHANGING 606714 GREASE SEAL:
- Take Pictures to Document Order of Components When Removing Caster Wheel Components – Refer to The Diagrams Above in the Image Section – Picture & Images Work Wonders on Failed Memories.
- When Removing the Outer Seal, It Is Necessary to Remove the Front Wheel from the Front Caster Fork – Loosen and Remove the Lock Nut & Bolt and Remove the Caster Fork Wheel.
- When Removing the Outer Seal – After Seal Has Been Remove the Wheel Hub Bearings are Prone to Fall out – If this Happens Make Sure It is Re-Assembled with the Taper Fitting into the Outer Bearing Race Taper Properly (the Roller Bearing & the Bearing Race Tapers Should Mate) Before Installing the New Seal.
- Be Sure To Verify When Assembling – That the 606753P Bearing & Race is Not Worn, Contains a Rough Surface or Damaged in Any Way Before Installing a New Seal – Be Mindful the Race is the Smooth Alloy Surface that the Rollers on Bearing Will Travel Across – Damaged Races Can Prematurely Wear out the Roller Bearings and Vice Versus (606753P Bearing Races are a Press/Friction Fit and Will Require them to be Pressed or Pounded Out of the Caster Fork Tube – if Installing a New Bearing & Race – it Is Recommended to Utilize a Bearing Race Installation Tool to Ensure No Damage Occur to the Inner Race Surface).
- Be Sure to Pack the Voided Areas where Grease Had Been Lost inside the Caster Fork Wheel Hub, In the Bearing Rollers & Apply a Grease Layer to the Race Surface – This will Ensures the Bearing Rollers and Race Surface Don’t Overheat from Lack of Lubrication – Be Sure to Apply Grease using the Grease Zirk on the Wheel Hub After Installation to Compress Grease Into The Voided Areas of the Wheel Hub and Wheel Bearings.
- When Re-Installing the Front Wheels it is Important to Note: Over Tightening the Tapered Bearing into the Bearing Race when Re-Assembling the Wheel on the Caster Fork Could Reduce the Rotation of the Caster Fork and Wheel as Well as Affect Drive Track and Cause Pre-Mature Wear on the Bearing Rollers and Race – Be Sure to Snug The Nut And Bolt Tight With a Wrench or Socket (Front Wheels) and Back it Off Only Until the Wheel and Bearings Rotates Freely Without any Seemingly Abnormal Drag.
- For a Complete Front Caster Wheel Bearing, Race, Seal Kit to Rebuild one Caster Wheel Assembly (Which Contains 606753P Tapered Roller Bearing & Race x 2 – 606780 Grease Seal x 2) Refer to Part Number 606753 KIT
Model Fit Chart
Trimstar (All Models)
939496, 939504, 939512, 939538, 942268, 942276
Surfer PRO (All Models)
941591, 941617, 944637, 944645
FasTrack (2022 – Current)
941724, 941732, 941740, 941757, 941765, 941773, 941781, 941674, 941682, 941708, 943704, 943753, 943761
X-ONE (2016 – Current Side & Rear Discharge Models)
606780 Not Factory Installed – Could Be Interchanged – All New Wheel Replacement Part Numbers Will Come With 606780 and Newer Bearing and Wheel Components.
936237, 936245US, 936252, 936260, 936278, 936286, 936294US, 936302, 936310, 936328, 936336
606780 is Factory Installed
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
X-RIDE (All 60″ Models)
944074, 944868
Super Z (2011 – Current Side & Rear Discharge Models)
606780 Not Factory Installed – Could Be Interchanged – All New Wheel Replacement Part Numbers Will Come With 606780 and Newer Bearing and Wheel Components.
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
606780 is Factory Installed
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 (2013 – Current Side & Rear Discharge Models)
606780 Not Factory Installed – Could Be Interchanged – All New Wheel Replacement Part Numbers Will Come With 606780 and Newer Bearing and Wheel Components.
932145, 932152, 932160, 932178, 932186, 932996, 933002, 934307, 934315, 934323, 934349, 934687, 934695, 934919, 934927, 934935, 934943, 934950, 934968, 934976
606780 is Factory Installed
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
Super S (2021 – Current 48″, 52″ & 60″ Models Only)
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)
942029, 942037, 942045, 942052, 943506, 943514, 943522, 943530
Diesel Z (2025 – Earlier Models)
938233US, 938241US, 938258US, 938266US, 940452US, 940460US, 940478US, 940486US, 943233US, 943241US, 943249US, 943266US
Super 88 (All Models)
936617, 939546
Super 104 (All Models)
937201, 937219, 939462, 939470, 939603, 939652, 941005, 941526, 942318, 943217, 943225, 944058, 944066
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