My 21A-39M8710 Model Overview from Home Depot Appliance Parts

Lock Washer

Part #: HD9416175

Manufacturer Part #: 736-0171

$5.80

Bracket-tine Shiel

Part #: HD9132986

Manufacturer Part #: 786-0053-0637

$14.20

TT Sems Screw 3/8-16 x 1.250

Part #: HD9089141

Manufacturer Part #: 710-0502A

$8.73

Pulley

Part #: HD9122411

Manufacturer Part #: 756-0585

$47.10

Screw-hex 5/16-18

Part #: HD9086559

Manufacturer Part #: 710-0189

$8.11

Tine Assy-outer Lh

Part #: HD9055366

Manufacturer Part #: 642-0023-0637

$66.93

Tiller Inner Tine Assembly R.H.

Part #: HD9055360

Manufacturer Part #: 642-0002-0637

This right-hand inner tine assembly restores proper soil-cutting performance on front-tine rototillers by replacing a bent, worn, or broken tine. Its durable steel construction is shaped to aggressive...

$66.95

Tine Assy-inner-lh

Part #: HD9055361

Manufacturer Part #: 642-0003-0637

This is a MTD and Yard Machines replacement part directly sourced from the manufacturer for use in lawn mowers. The left hand inner tine goes next to the left hand outer tine. It might require a set o...

$66.93