Replacement Spindle Assembly Fits Toro 99-4640

One New Aftermarket Replacement Spindle Assembly for Toro Z Master Commercial Zero-Turn Mowers

This cast iron outer spindle assembly replaces Toro OEM part number 99-4640 and fits the right-hand and left-hand outer spindle positions on Toro Z Master commercial zero-turn mowers equipped with 62-inch cutting decks. The spindle assembly connects the deck belt pulley to the blade saddle, transferring power from the drive belt to the cutting blade. Note: this part ships without grease and must be lubricated before use. Pulley retaining nut must be torqued to 100-120 ft-lbs before operation.

Specifications

• Construction: Cast iron housing
• Blade saddle: 2-1/2 inch
• Spindle height: 3-1/4 inches
• Pulley outer diameter: 5-1/2 inches
• Mounting hole distance: 6-3/4 inches (171.5 mm)
• Position: Right-hand (RH) and left-hand (LH) outer spindles
• Deck size: 62 inches

Compatible Models

Toro Z Master 62-inch Deck Models: Z252L (74212), Z253 (74209, 74225), Z255 (74203, 74226, 74234), Z256 (74218), Z257 (74231), Z283L (74216), Z286E (74240), Z287L (74213, 74236), Z288E (74258); also fits Toro model 105-6176

Please verify your mower model and serial number against your parts diagram to confirm this spindle assembly is correct for your specific machine, as this part fits many but not all 62-inch Z Master models.

Replaces Part Number(s):

Toro 99-4640, 994640

Aftermarket Interchange Numbers

Oregon 82-676, 82676; Rotary 13621; Laser 97730; Stens 285-971, 285971; A&I B1TR03

New aftermarket replacement part - not remanufactured, not used.