90-309 Mower Blade for John Deere M143504 — 21-5/8 in.
90-309 Mower Blade for John Deere M143504 — 21-5/8 in.
90-309 Mower Blade is a replacement mower blade with a profile intended to restore consistent cutting performance. Match the complete part number, mounting pattern, dimensions, and equipment configuration before ordering.
Purpose and Value
A worn, bent, or incorrect blade can leave uncut strips, tear grass, increase vibration, and reduce discharge quality. Correct geometry helps restore an even cut and limits avoidable spindle and deck vibration.
Verified Supplier Specifications
| Blade length | 21-5/8" |
|---|---|
| Blade width | 2.50" |
| Thickness | 0.250" |
| Center hole | 13/16" |
| Offset | 1/2 |
| Air lift | 1-1/4" |
Supplier-Verified Application Details
Center hole: 13/16" Enhanced mulching for bagging and discharge efficiency Stays sharp and durable For use with compact utility tractor series: 2305, 2000, 3000, 4000 Fits with John Deere tractor Models: X465, X475, X485, X495, X575, X585, X595, X700, x720, x724, x728, x740, x744, x748
Supplier Model and Replacement Guide
Model Fit Guide and Parts Cross Reference Need Help? Contact Customer Service at 800-223-5168 or email us at oregon.support@oregontool.com Fit Guide John Deere Replacement Guide John Deere Laser Sunbelt Product Details Center hole: 13/16" Enhanced mulching for bagging and discharge efficiency Stays sharp and durable For use with compact utility tractor series: 2305, 2000, 3000, 4000 Fits with John Deere tractor Models: X465, X475, X485, X495, X575, X585, X595, X700, x720, x724, x728, x740, x744, x748
Deck quantity guidance: use with compact utility tractor series: 2305, 2000, 3000, 4000 Fits with John Deere tractor Models: X465, X475, X485, X495, X575, X585, X595, X700, x720, x724, x728, x740, x744, x748. Confirm the exact deck configuration before ordering.
What One Purchase Includes
One blade. Multi-blade decks require the quantity stated for the exact deck.
Fitment Safeguard
Verify the complete OEM or replacement number, mower or engine model, serial range, deck size, mounting pattern, orientation, and required quantity. Similar-looking parts can differ in offset, rotation, hole pattern, thread, connector, or other critical details.
Installation and Service
No product-specific installation manual was verified in the supplier record. Follow the equipment manufacturer's procedure. For blades, stop the engine, remove the key, disconnect the spark-plug lead, secure the blade, wear cut-resistant gloves, install in the correct orientation, and torque hardware to the equipment manufacturer's specification.