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Seal

Part Number: 721-0175

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Repair Instructions

*This part replaces obsolete part #: 921-0175, 1773207 and 1185266.

Product Information

Manufacturer: MTD, Bolens, Troy-Bilt

Product Number: 721-0175

Classification: Part

Weight: 0.01 lbs.

Shipping: Ships Worldwide

Description:

This authentic part is supplied directly from the original equipment manufacturer for MTD and Cub Cadet tillers. It is one of the special seals for the bearings. Over time the material may wear out and begin to crack eventually requiring a replacement to ensure a tight fit. Make sure to refer to the appropriate diagrams for your specific model to ensure the exact location and the correct application of this component. Note, one durable rubber seal is included.

Warning: California's Proposition 65

Frequently Purchased With

Bearing
$6.68

Dust Cap
$10.06

Fl-Wash 1.00
$3.95

Gasket
$13.07

Spacer 1.0 I.D..
$8.61

Compatibility

This part is compatible with the following machines:

MTD

Expand the 150+ compatible machines

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Repair Instructions: Submitted by Customers Like You

Tool Type:

Cultivator

Parts Used:

Spacer 1.0 I.D x 2.0 O.D. x .440 - 950-0570

Gasket - 721P0170

Seal - 721-0175

Bearing - 931-0374

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set, Adjustable Wrench

Bearings on rototiller shaft worn out

Took apart the gear box that drives the rototiller tines to replace the bearings, which in turn had to replace the other 3 parts. There are quite a few screws and other sections of the rototiller to take apart which was pretty much an all day job. Runs just like new.

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Tool Type:

Cultivator

Parts Used:

Gasket - 721P0170

Seal - 721-0175

Bearing - 931-0374

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Pliers, Socket set, Wrench Set, Nutdriver

Bushings worn out on tines shaft.

1. Removed the covers around the tines.
2. Removed the housing that contained the chain drive and bushings.
3. Split the housing by removing all fasteners. Note: Remember where the fasteners were removed. There are holes in the case that have the handles attached at that point. If you get the fasteners in the wrong place you will have to remove them with the case mounted in the frame.
4. Removed old bushings and replaced. Had to clean the tine shaft with crocus cloth to get it back into the bushings.
5. Cleaned the case and greased all parts appropriately.
6. Replaced the gasket and reassembled the case.
7. Replaced the case in the frame.
8. Replaced all covers and guards. Total time to do was about 8 hours, but I took my time and cleaned and inspected as I went.

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Tool Type:

Cultivator

Parts Used:

Bearing .62 - 941-0155

Dust Cap - 931-0487

Seal - 721-0175

Repair Difficulty:

Easy

Time Spent Repairing:

1-2 hours

Tools Used:

Socket set

Bearings wore bad on a 1986 model tiller

Drop gear case out of machine by 4 bolts
separate case after removing pulley
Replaced bearings
Replace seals and dust caps on tine shaft

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Tool Type:

Cultivator

Parts Used:

Idler Pulley 2 1/4\\\" X 3/8\\\" Flat - 34-005

Repair Difficulty:

Medium

Time Spent Repairing:

More than 2 hours

Tools Used:

Screwdriver, Socket set, Wrench Set, Hammer

Tiller drive chain bushings, seals, and bearings worn out. Shafts are obsolete for this 1987 MTD tiller so I had to weld up the worn areas on the shafts and machine back to new size.

Disassembled tiller to remove drive gear. Disassembled the gear drive chain, removed upper and lower drive gears and shafts, welded up and machined down bearing and seal areas. Removed old bushings, bearings, and seals. Installed all new parts and reassembled.

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Product Information

Manufacturer: MTD, Bolens, Troy-Bilt

Product Number: 721-0175

Classification: Part

Weight: 0.01 lbs.

Shipping: Ships Worldwide