Description
PTO Clutch Fits Grasshopper 718k 720k Mowers Replaces Xtreme X0450
Applications:
Ariens Applications
Grand Sierra
Models 931037-931038
Models 931302-931303
Grasshopper Applications
718K
720K
Gravely Applications
GT600 Model 987104
Toro Applications
Residential Garden Tractors
Proline 724-Z Tractors Serial # 590001-699999
Model 74140
Specifications:
PTO Clutch
Crankshaft Size In Inches: 1
Pulley OD In Inches: 4.8
Rotation: CW
Foot Pounds: 105
Replaces these part numbers:
Ariens: 03090800, 30908
Case: C38410
Cub Cadet: C38410, WD-C38410
Grasshopper: 388766, 604182
Gravely: 03090800, 30908
Ingersoll Rand: C38410
Jacobsen: C38410
MTD: C38410, WD-C38410
New Holland: C38410, WD-C38410
Sears: C38410, WD-C38410
Toro: 93-3160
Warner: 5210-52, 5215-120, 5215-62
Xtreme: X0450
Why Replace Your PTO Clutch?
PTO clutches on Grasshopper mowers endure extreme conditions constant vibration, dust, debris, moisture, and thousands of engagement cycles each season. Common failure signs include:
- Blades not engaging or disengaging properly
- Slipping under load or in tall/wet grass
- Unusual noises (grinding, squealing) when activating the blades
- Burning smell from the clutch area
- Intermittent operation or complete failure to spin the blades
Replacing a worn clutch with this high-torque unit prevents further damage to belts, spindles, or the deck while restoring factory-like cutting quality. Benefits include:
- Faster and smoother blade engagement for cleaner, more professional cuts
- Higher torque capacity to handle dense vegetation without bogging down
- Improved reliability during long mowing days, reducing breakdowns
- Cost savings compared to dealer OEM parts or premium Xtreme replacements
- Extended mower life by protecting connected components

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