388771 PTO Clutch Replacement for Grasshopper 722D2, 928D2 | Replaces Warner 5218-226, X0105

Overview

This 388771 PTO clutch replacement is an aftermarket electric PTO clutch for select Grasshopper commercial mower applications, including 700 and 900 Series machines.

This clutch replaces Grasshopper 388771, 388768, and 604183, and cross-references Warner 5218-226, Warner 5218-170, Warner 5218-229, Xtreme X0105, Stens 255-771, Oregon 33-189, and Rotary 11074.

Built with a 1-1/8 inch crankshaft bore, 4-7/8 inch double pulley, and clockwise rotation, this clutch is designed for Grasshopper applications that use a dual 1/2 inch belt PTO clutch path.

Key Features

• Aftermarket electric PTO clutch replacement for listed Grasshopper commercial mower applications
• Crankshaft Bore: 1-1/8" / 1.125"
• Pulley Diameter: 4-7/8" / 4.875"
• Pulley Type: double pulley
• Belt Width: double 1/2" belt setup
• Rotation: CW from pulley side
• Voltage: 12V DC
• Connector Style: connector style as shown in product photos
• Integrated brake assembly for controlled blade stopping
• Fully assembled and ready to install after fitment verification

Compatible Brands & Models

This PTO clutch fits select Grasshopper mower applications that use the 388771, 388768, 604183, or Warner 5218-226 clutch path. Fitment depends on original clutch number, crankshaft bore, pulley type, rotation, connector style, anti-rotation setup, and mower configuration.

Grasshopper Applications

• Grasshopper 620T
• Grasshopper 722D2: select 2003-2008 applications
• Grasshopper 722DT6
• Grasshopper 725DT6
• Grasshopper 727K2
• Grasshopper 727T6
• Grasshopper 729BT6
• Grasshopper 729G2
• Grasshopper 729T6
• Grasshopper 735BT6
• Grasshopper 928D2: select 1998-current applications
• Grasshopper 930D2
• Grasshopper 932G2

Fitment note: If your original clutch is marked Grasshopper 388771, 388768, 604183, Warner 5218-226, Warner 5218-170, Warner 5218-229, Xtreme X0105, Stens 255-771, Oregon 33-189, or Rotary 11074, this is the correct replacement path. However, carefully match specs if relying on model information alone.

Replaces OEM Part Numbers

• Grasshopper: 388771, 388768, 604183
• Woods: 388771

Cross-Reference Aftermarket Numbers

• Warner: 5218-226, 5218226
• Warner: 5218-170, 5218170
• Warner: 5218-229, 5218229
• Xtreme: X0105
• Stens: 255-771
• Oregon: 33-189
• Rotary: 11074
• Sunbelt: B1XT0249

What’s Included

• Complete electric PTO clutch assembly
• Factory-balanced double pulley
• Pre-installed bearing assembly
• Encapsulated electromagnetic coil
• Integrated brake assembly
• Connector style as shown in product photos

Why Buy From PTO Direct USA?

• Fast USA shipping
• fitment guarantee
• 1-year warranty
• Fitment-first product support
• Clear product images for easier clutch identification
• Trusted replacement supplier for homeowners, repair shops, and mower service professionals

FAQ

Does this PTO clutch replace Grasshopper 388771?

Yes, this clutch replaces Grasshopper 388771 on compatible Grasshopper mower applications. Confirm your original clutch number, 1-1/8 inch bore, 4-7/8 inch double pulley, clockwise rotation, connector style, and anti-rotation setup before ordering.

Is Grasshopper 388768 the same fitment?

Grasshopper 388768 is listed in the same replacement path as 388771. Match your original clutch number and physical specs before ordering.

Is Warner 5218-226 the same fitment as Grasshopper 388771?

Warner 5218-226 is the Warner cross-reference associated with the Grasshopper 388771 clutch path.

Does this replace Warner 5218-170 or 5218-229?

Yes, Warner 5218-170 and Warner 5218-229 are commonly listed in the same replacement path as Grasshopper 388771 and Warner 5218-226.

Does this fit Grasshopper 722D2?

Yes, this clutch is listed for select Grasshopper 722D2 applications, including 2003-2008 fitment references. Confirm your original clutch number and physical specs before ordering.

Does this fit Grasshopper 928D2?

Yes, this clutch is listed for select Grasshopper 928D2 applications, including 1998-current fitment references. Always verify the original clutch number before ordering.

Is Grasshopper 388771 the same as 388769?

No. Grasshopper 388771 and Grasshopper 388769 are separate clutch paths. The 388769 path is associated with Warner 5218-67 / 5218-214 and Xtreme X0043, while this page is for the 388771 / Warner 5218-226 path.

Is Grasshopper 388771 the same as 388740?

No. Grasshopper 388740 follows a different clutch path and should not be merged with this 388771 listing.

What bore size does this clutch use?

This clutch uses a 1-1/8 inch bore, also written as 1.125". It will not fit a 1-inch crankshaft.

What pulley does this clutch use?

This clutch uses a 4-7/8 inch double pulley designed for a dual 1/2 inch belt setup. Do not substitute a single-pulley clutch.

What rotation does this clutch use?

This clutch uses clockwise rotation, commonly written as CW. Match rotation to your original clutch before installing a replacement.

What are common signs of a failing PTO clutch?

Common symptoms include mower blades not engaging, the PTO clutch clicking but the blades not spinning, slipping under load, intermittent blade engagement, a burning smell, or blades slowing down after the mower heats up. A worn coil can work cold, then weaken after 10 to 30 minutes of mowing.

Can PTO Direct USA help me confirm fitment?

Yes. Email support@ptodirectusa.com with your mower model number, serial number, deck size, original clutch number, and clear photos of the old clutch. For the best fitment help, include photos of the clutch label or stamped number, wiring connector, pulley, anti-rotation bracket, and crankshaft area.

Need help checking crankshaft size? Read the PTO clutch bore size guide.

Need help with rotation? Read the PTO clutch rotation guide.

If your old clutch will not come off the crankshaft, read the PTO clutch stuck on crankshaft guide before prying or hammering.

Need a different Grasshopper clutch? Browse the Grasshopper PTO clutch collection or the full electric PTO clutch catalog.