601784 / 601784K PTO Clutch for Hustler Sport & Big Dog | Warner 5219-107
601784 / 601784K PTO Clutch for Hustler Sport & Big Dog | Warner 5219-107
Overview
This aftermarket 601784 / 601784K electric PTO clutch is a replacement for select Hustler Sport, FasTrak, TrimStar, and Big Dog mower applications using the 601784, 601784K, or Warner 5219-107 clutch path.
This clutch uses a 1-inch crankshaft bore, approximately 6-inch pulley, and CCW rotation from the pulley side. It is designed as a complete assembled electric PTO clutch for compatible Hustler and Big Dog platforms.
Fitment note: Hustler model-family names cover multiple engines, deck sizes, and clutch paths. Confirm that the original clutch or model-specific parts manual identifies 601784 or 601784K before ordering.
Key Features
- Aftermarket electric PTO clutch assembly
- Primary Hustler Part Number: 601784
- Hustler Clutch-Kit Path: 601784K
- Warner Cross-Reference: 5219-107
- Crankshaft Bore: 1 inch
- Pulley Diameter: approximately 6 inch
- Rotation: CCW from pulley side
- Belt Groove: A/B combination path
- Voltage: 12 VDC
- Complete assembled replacement clutch
Compatible Brands & Model Series
This PTO clutch is intended for select Hustler and Big Dog mower configurations using the confirmed 601784 / 601784K / Warner 5219-107 clutch path.
Hustler Applications
- Hustler Sport: select models including 929125 (26HP Briggs only), 929240, 929265 and related Sport configurations using the 601784 / 601784K path (commonly Kawasaki FR651V and certain 26 HP Briggs engines)
- Hustler FasTrak: select 48-, 54-, and 60-inch FasTrak applications in the 929xxx–931xxx range that use this clutch
- Hustler TrimStar: select 36-, 48-, and 54-inch TrimStar models using the confirmed 601784 path
Big Dog Applications
- Big Dog A-Series, C-Series, R-Series, and T-Series: select configurations using 601784 or 601784K
Model-family warning: Sport, FasTrak, TrimStar, and Big Dog family names cover multiple clutch configurations. Do not order from the mower-family name, engine horsepower, or deck size alone. Check your parts manual by model number and engine type at the Official Hustler Parts Lookup
Replaces OEM Part Numbers
- Hustler: 601784, 601784K
- Big Dog: 601784, 601784K
Aftermarket Cross-Reference Numbers
- Warner: 5219-107, 5219107
- Xtreme: X0108 (common aftermarket path)
Common Symptoms of a Failing PTO Clutch
- Blades will not engage when the PTO switch is activated
- The clutch clicks but the deck belt does not begin turning
- Blades engage when cold but stop after the clutch heats up
- The clutch slips during heavy or wet cutting conditions
- The deck belt squeals, smokes, or overheats during engagement
- Burning smell near the engine crankshaft or clutch
- Grinding, rumbling, or excessive pulley-bearing noise
- Intermittent blade engagement under load
What’s Included
- 1 complete aftermarket electric PTO clutch assembly
- Integrated approximately 6-inch pulley
- Integrated electromagnetic coil and brake assembly
- Clutch-side electrical connection
- Bushing
Included-item warning: Do not assume the mower-side harness, crankshaft bolt, key, washer, spacer, clutch anchor, or anti-rotation bracket is included unless clearly shown in the product photos.
Why Buy From PTO Direct USA?
- Part-number-first PTO clutch listings
- Clear aftermarket cross-reference distinctions
- Fitment-focused product descriptions
- Fast USA shipping
- 1-year warranty
- Support for mower owners, repair shops, and commercial operators
Need Help Confirming Fitment?
Send PTO Direct USA the complete Hustler or Big Dog mower model, serial number, deck size, engine model, and original PTO clutch number before ordering.
For the best fitment help, include clear photos of the mower identification tag, original clutch label or stamped number, pulley, electrical connector, and anti-rotation setup.
FAQ
What PTO clutch replaces Hustler 601784?
This aftermarket electric PTO clutch replaces Hustler 601784 and the related 601784K clutch-kit path on compatible applications. Warner identifies 5219-107 as the corresponding Warner number.
Does this replace Hustler 601784K?
Yes. This clutch covers the 601784K path. Supporting wiring or mounting hardware supplied in an OEM kit may not be included with the aftermarket clutch assembly.
What Warner number crosses to Hustler 601784?
The primary Warner cross-reference is 5219-107.
What are the main specifications for this clutch path?
1-inch crankshaft bore, approximately 6-inch pulley, CCW rotation from the pulley side, and 12 VDC operation.
Does this fit a Hustler Sport?
It fits select Hustler Sport models using the confirmed 601784 / 601784K path (commonly associated with certain Kawasaki FR651V and 26 HP Briggs applications). Confirm the complete model number and original clutch number before ordering.
Does this fit a Hustler FasTrak or TrimStar?
It fits select FasTrak and TrimStar applications that use the 601784 clutch path. Other configurations use different clutches, so match the original part number.
Can I order this clutch by deck size or model name alone?
No. Match the original clutch number or the exact model-specific parts diagram first, then confirm bore, pulley diameter, rotation, and connector style.
Is the mounting hardware or wiring harness included?
Do not assume the crankshaft bolt, key, washer, spacer, anti-rotation bracket, or mower-side harness is included unless clearly shown in the current product listing.