Part Location Diagram of 721-04612 MTD Seal-oil
See part 55 in the diagram
( Grid squares measure 1x1 inch )

Seal-oil 721-04612

Manufactured by:
MTD
ERP Number:
ERP16413328
Part Number:
721-04612
Original Equipment Manufacturer ?
$7.98
On Order
Minimum Quantity of 2 required

Difficult 

More than 2 hours 

(1 rated repair) ?

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Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Cub Cadet
  • MTD
  • Craftsman
  • Troy-Bilt
This part works with the following products:
  • Snow Blower
Part# 721-04612 replaces these:
721-04612, 721-04612-CM,

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Customer Repair Instructions

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Difficult 

More than 2 hours 

(1 rated repair) ?
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Sorry, we couldn't find any existing installation instruction that matched.

Main drive shaft broke on a Cub Cadet 42\" 3 stage tractor mount snow thrower

Brian from Lehighton, Pennsylvania

1 person found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
More than 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
Removed front section of blower from the tractor mount and pulley housing, disassembled snow chute.
Removed auger assembly and transmission from thrower box.
Removed augers from shafts, disassembled transmission.
Cleaned and inspected gears, replaced drive shaft, seals and main bearing (was damaged in breakage). ... Read more />Heavily greased shafts to prevent augers from rusting solid (which is what caused the shaft to snap, as the break-off bolts were rendered inoperable because drive shaft was rusted to rear auger).
Cleaned, lubed, reassembled and tested.
Replaced transmission gear oil with 75w-95 full Synthetic.

Tip: Get a good pair of snap ring pliers. I wasted probably an hour of time trying to get the C rings off and back in the transmission housing with junk $8 pliers that kept falling apart!
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Model Cross Reference

This part works with the following models:
ERP Number: ERP16413328
Manufacturer Part Number: 721-04612
Brand Model Number Description
Troy-Bilt 1154648 Snow Blower - 1154648 - Snow Throwers
Troy-Bilt 1187452 Snow Blower - 1187452 - Snow Throwers
Cub Cadet 19A40023 Lawn Tractor Accessories - 42-Inch 3X Snow Thrower
Cub Cadet 19A40023100 Snow Blower - 19a40023100 42-Inch 3x Snow Thrower 19a40023100
Cub Cadet 19A40024 Lawn Tractor Accessories - 42-Inch 3X Snow Thrower
Cub Cadet 19A40024100 Snow Blower - 19a40024100 42-Inch 3x Snow Thrower (2015 & Before) 19a40024100
MTD 19A40024OEM Lawn Tractor Accessories - Attachment
MTD 19A40045 Snow Blower - 19a40045oem 42-Inch 3x Snow Thrower (2018)
MTD 19B40024 Snow Blower - 19b40024oem 42-Inch 3x Snow Thrower (2023 & After)
Cub Cadet 19B40024OEM Snow Blower - 19b40024oem 42-Inch 3x Snow Thrower (2023 And After)
Craftsman 247888700 Snow Blower - Snow Thrower
Craftsman 247888701 Snow Blower - Snow Thrower
Craftsman 247888702 Snow Blower - Snow Thrower
Craftsman 247888740 Snow Blower - Snow Thrower
Craftsman 247888741 Snow Blower - Snow Thrower
Craftsman 247888742 Snow Blower - Snow Thrower
Craftsman 247889760 Snow Blower - Snow Thrower
Craftsman 247889780 Snow Blower - Snow Thrower
Cub Cadet 2X Snow Blower - 28-Inch Hp Snow Thrower
Cub Cadet 2X24-INCHHP Snow Blower - 2x 24-Inch Hp (31am5bsr710) (2016)
Cub Cadet 2X24HP Snow Blower - 2x 24hp (Hm 2015) 31am53sr710 (Hm 2015) 31am53sr756 (Hm 2015)
Cub Cadet 2X26-INCH Snow Blower - 2x 26-Inch (31am5hvsb56) (2022)
Cub Cadet 2X26-INCHHP Snow Blower - 2x 26-Inch Hp (31am5cvs710) (2018)
Cub Cadet 2X26-INCHTRAC Snow Blower - 2x 26-Inch Trac (31ah7fvm710) (2020)
Cub Cadet 2X26HP Snow Blower - 2x 26hp (Hm 2015) 31am56ss710 (Hm 2015) 31am56ss756 (Hm 2015)
Cub Cadet 2X28-INCH Snow Blower - 2x 28-Inch (31ah5ivtb10) (2023)
Cub Cadet 2X28-INCHHP Snow Blower - 2x 28-Inch Hp (31ah54vt709) (2018)
Cub Cadet 2X30-INCH Snow Blower - 2x 30-Inch (31ah5jvub10) (2023)
Cub Cadet 2X30-INCHEFI Snow Blower - 2x 30-Inch Efi (31ah5gvo710) (2021)
Cub Cadet 2X30-INCHHP Snow Blower - 2x 30-Inch Hp (31ah5dvu756) (2020)