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Blade Measuring Instructions

Replacement MTD Blades.
Below are the Replacement blades we carry for MTD

Please scroll down to find your size.
Length of Blade (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

400317 Image
P/N : 400317
BLADE ADAPTER ASSEMBLY

Replaces OEM
mtd   7530343B
        3/16" built in keyway Get Details part number 400317

400465 Image
P/N : 400465
BLADE ADAPTER

Replaces OEM
mtd   7480300
mtd   7530583
        Splined adaptor Get Details part number 400465

400481 Image
P/N : 400481
BLADE ADAPTER

Replaces OEM
mtd   7530463
mtd   7530485
mtd   9480324
mtd   OEM7530485
        Splined adapter Get Details part number 400481

405005 Image
P/N : 405005
BLADE ADAPTER

Replaces OEM
mtd   7480235
mtd   7530210
        Splined adapter Get Details part number 405005

405630 Image
P/N : 405630
BLADE ADAPTER

Replaces OEM
mtd   7480323
mtd   9480323
        Built in keyway Get Details part number 405630
Length of Blade 1 1/2" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

410027 Image
P/N : 410027
BLADE BOLT

Replaces OEM
mtd   7100459
mtd   7100459A
mtd   9100459
        Get Details part number 410027

410163 Image
P/N : 410163
BLADE BOLT

Replaces OEM
mtd   7100757
mtd   9100757
        Get Details part number 410163
Length of Blade 12 1/2" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335798 Image
P/N : 335798
MULCHING BLADE

Replaces OEM
mtd   7420539
mtd   9420539
3 1/4"   1 1/2"    2 1/2"   Requires 2 of 335-798 and 2 of 335-790 for 38" cut Get Details part number 335798
Length of Blade 14 13/16" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335125 Image
P/N : 335125
STANDARD BLADE

Replaces OEM
mtd   7420486
mtd   9420486
mtd   9420486A
3"   3/8"    2 1/2"   Requires 1 of 335-125 and 2 of 335-117 for 46" cut Get Details part number 335125

335723 Image
P/N : 335723
STANDARD BLADE

Replaces OEM
mtd   7420645
mtd   9420645
3"   6 pt. star    2 1/2"   Requires 1 of 335-723 and 2 of 335-719 for 46" cut Get Details part number 335723
Length of Blade 14 3/4" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335539 Image
P/N : 335539
STANDARD BLADE

Replaces OEM
mtd   7420129
mtd   9420129B
2"   3/8"    2 1/2"   Requires 3 for 42" cut Get Details part number 335539
Length of Blade 14 7/8" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335695 Image
P/N : 335695
STANDARD BLADE

Replaces OEM
mtd   7420612
mtd   7420612A
mtd   9420612
mtd   9420612A
2 1/2"   6 pt. star    2 1/2"   Requires 1 of 335-695 and 2 of 335-691 for 46" cut Get Details part number 335695
Length of Blade 16 1/4" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335117 Image
P/N : 335117
STANDARD BLADE

Replaces OEM
mtd   7420477
mtd   7420480
mtd   7420487
mtd   7420487A
mtd   9420487A
3"   3/8"    2 1/2"   Requires 2 of 335-117 and 1 of 335-125 for 46" cut Get Details part number 335117

335691 Image
P/N : 335691
STANDARD BLADE

Replaces OEM
mtd   7420611
mtd   7420611A
mtd   9420611
mtd   9420611A
2 1/2"   6 pt. star    2 1/2"   Requires 2 of 335-691 and 1 of 335-695 for 46" cut Get Details part number 335691

335719 Image
P/N : 335719
STANDARD BLADE

Replaces OEM
mtd   7420644
mtd   9420644
3"   6 pt. star    2 1/2"   Requires 2 of 335-719 and 1 of 335-723 for 46" cut Get Details part number 335719
Length of Blade 16 9/32" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

OEM7530571 Image
P/N : OEM7530571
3 Blade Set for 46" Deck

Replaces OEM
mtd   OEM MTD
        Fits all 46" MTD deep decks, 1996 & prior Get Details part number OEM7530571

OEM7530847 Image
P/N : OEM7530847
3 Blade Set for 46" Deck-Star Center Hole

Replaces OEM
mtd   OEM MTD
        Fits auto drive step thru frame lawn & garden tractors 1999 & after Get Details part number OEM7530847
Length of Blade 17 1/4" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335653 Image
P/N : 335653
STANDARD BLADE

Replaces OEM
mtd   7420171
mtd   7420171B
mtd   9420171B
2 1/2"   3/8"    2 1/2"   Requires 3 for 50" cut Get Details part number 335653
Length of Blade 17 1/4" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

OEM7420171B Image
P/N : OEM7420171B
3 Blade Set for 50" Deck

Replaces OEM
mtd   OEM MTD
        Fits all 50" MTD decks 1997 & prior Get Details part number OEM7420171B

OEM7420623 Image
P/N : OEM7420623
3 Blade Set for 50" Deck-Star Center Hole

Replaces OEM
mtd   OEM MTD
        Fits all 50" MTD deep decks, 1998 and after Get Details part number OEM7420623
Length of Blade 17 5/16" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335650 Image
P/N : 335650
STANDARD BLADE

Replaces OEM
mtd   7420623
mtd   9420623
2 1/2"   6 pt. star    2 1/2"   Requires 3 for 50" cut Get Details part number 335650
Length of Blade 17 7/8" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335859 Image
P/N : 335859
BLADE HI-LIFT, MULCH

Replaces OEM
mtd   74204053
mtd   74204053A
mtd   74204053B
mtd   94204053C
2 3/8"   6 pt. star       Get Details part number 335859
Length of Blade 18 1/2" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335855 Image
P/N : 335855
MULCHING BLADE

Replaces OEM
mtd   7420677
mtd   7420677A
mtd   7420677B
mtd   9420677
mtd   9420677A
mtd   9420677B
3"   6 pt. star       Specially designed center hole to replace six point star
Get Details part number 335855
Length of Blade 18 1/4" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335170 Image
P/N : 335170
HI-LIFT BLADE

Replaces OEM
mtd   7420496
mtd   9420496
3"   3/8"    2 1/2"   Get Details part number 335170
Length of Blade 18 15/16" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335570 Image
P/N : 335570
STANDARD BLADE

Replaces OEM
mtd   7420122A
mtd   9420122A
mtd   9420122B
2"   3/8"    2 1/2"   Requires 2 for 38" cut Get Details part number 335570
Length of Blade 18" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335562 Image
P/N : 335562
STANDARD BLADE

Replaces OEM
mtd   7420121
mtd   9420121B
2"   3/8"    2 1/2"   Requires 2 for 36" cut Get Details part number 335562
Length of Blade 19 1/4" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335624 Image
P/N : 335624
MULCHING BLADE

Replaces OEM
mtd   7420610
mtd   7420610A
mtd   9420610
mtd   9420610A
2 3/4"   6 pt. star    2 1/2"   Specially designed center hole to replace six point star
Get Details part number 335624
Length of Blade 19 15/16" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335715 Image
P/N : 335715
MULCHING BLADE

Replaces OEM
mtd   7420740
mtd   9420740
2 1/4"   1" X 3/4"    2 1/2"   Fits bow tie style center hole Get Details part number 335715
Length of Blade 19 3/8" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335877 Image
P/N : 335877
STANDARD BLADE

Replaces OEM
mtd   7420473A
mtd   9420473A
3"   3/8"    2 1/2"   Requires 2 for 38" cut Get Details part number 335877
Length of Blade 19 5/16" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335586 Image
P/N : 335586
STANDARD BLADE

Replaces OEM
mtd   7420610
mtd   7420610A
mtd   9420610
mtd   9420610A
3"   6 pt. star    2 1/2"   Get Details part number 335586

335790 Image
P/N : 335790
BLADE, MULCHING

Replaces OEM
mtd   7420537
mtd   9420537
3"   3/8"    2 1/2"   Requires 2 of 335-790 and 2 of 335-798 for 38" cut Get Details part number 335790
Length of Blade 20" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335588 Image
P/N : 335588
STANDARD BLADE

Replaces OEM
mtd   7420123
mtd   9420123B
2"   3/8"    2 1/2"   Get Details part number 335588

335592 Image
P/N : 335592
MULCHING BLADE

Replaces OEM
mtd   7420720
mtd   9420720
2 1/4"   13/16"    2 1/2"   Get Details part number 335592

335665 Image
P/N : 335665
HI-LIFT BLADE

Replaces OEM
mtd   7420640
mtd   9420640
2 1/4"   1" X 3/4"    2 1/2"   Fits bow tie style center hole Get Details part number 335665

335943 Image
P/N : 335943
STANDARD BLADE

Replaces OEM
mtd   7420520
mtd   7420620
mtd   9420620
2"   13/16"    2 1/2"   Get Details part number 335943
Length of Blade 21 1/4" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335707 Image
P/N : 335707
MULCHING BLADE

Replaces OEM
mtd   7420616
mtd   7420616A
mtd   9420616
mtd   9420616A
2 3/4"   6 pt. star    2 1/2"   Requires 2 for 42" cut Get Details part number 335707

335711 Image
P/N : 335711
STANDARD BLADE

Replaces OEM
mtd   7420616
mtd   7420616A
mtd   9420616
mtd   9420616A
3"   6 pt. star    2 1/2"   Requires 2 for 42" cut Get Details part number 335711

335782 Image
P/N : 335782
MULCHING BLADE

Replaces OEM
mtd   7420538
mtd   9420538
3"   3/8"    2 1/2"   Requires 2 of 335-782 and 2 of 335-798 for 42" cut Get Details part number 335782
Length of Blade 21 15/16" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335632 Image
P/N : 335632
HI-LIFT BLADE

Replaces OEM
mtd   7420642
mtd   7420642A
mtd   9420642
mtd   9420642A
2 1/2"   15/16" X 11/16"    2 1/4"   Specially designed center hole to replace bow tiestyle
Get Details part number 335632
Length of Blade 21 3/16" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335067 Image
P/N : 335067
STANDARD BLADE

Replaces OEM
mtd   7420499
mtd   7420499A
mtd   9420499A
3"   3/8"    2 1/2"   Requires 2 for 42" cut Get Details part number 335067
Length of Blade 21" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335083 Image
P/N : 335083
STANDARD BLADE

Replaces OEM
mtd   7420521
mtd   7420621
mtd   9420621
2"   13/16"    2 1/2"   Get Details part number 335083

335214 Image
P/N : 335214
MULCHING BLADE

Replaces OEM
mtd   7420741
mtd   9420741
2 1/4"   .93" X .70"    2 1/2"   Specially designed center hole to replace bow tie Get Details part number 335214

335596 Image
P/N : 335596
STANDARD BLADE

Replaces OEM
mtd   7420124
mtd   9420124B
2"   3/8"    2 1/2"   Get Details part number 335596

335677 Image
P/N : 335677
HI-LIFT BLADE

Replaces OEM
mtd   7420641
mtd   9420641
2 1/4"   15/16" X 11/16"    2 1/2"   Fits bow tie style center hole Get Details part number 335677

335814 Image
P/N : 335814
MULCHING BLADE

Replaces OEM
mtd   7420563
mtd   7420721
mtd   9420721
2 1/4"   13/16"    2 1/2"   Get Details part number 335814
Length of Blade 21.2" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

OEM7420499A Image
P/N : OEM7420499A
For 42" Deep Deck 1990 and after

Replaces OEM
mtd   OEM MTD
  13/32"    2.5"   Requires 2 for 42" Get Details part number OEM7420499A
Length of Blade 22" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335604 Image
P/N : 335604
STANDARD BLADE

Replaces OEM
mtd   7420125
mtd   9420125B
2"   3/8"    2 1/2"   Get Details part number 335604

335608 Image
P/N : 335608
MULCHING BLADE

Replaces OEM
mtd   7420742
mtd   7420742A
mtd   9420742
mtd   9420742A
2 1/4"   15/16" X 11/16"    2 1/2"   Get Details part number 335608

335628 Image
P/N : 335628
MULCHING BLADE

Replaces OEM
mtd   7420722
mtd   9420722
2 1/4"   13/16"    2 1/2"   Get Details part number 335628

335669 Image
P/N : 335669
STANDARD BLADE

Replaces OEM
mtd   7420622
mtd   9420622
2 1/4"   13/16"    2 1/2"   Get Details part number 335669

335737 Image
P/N : 335737
STANDARD BLADE

Replaces OEM
mtd   7420295
mtd   9420295
2"   3/8"    2 1/2"   Requires 2 for 44" cut Get Details part number 335737
Length of Blade 27.5" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

9420651 Image
P/N : 9420651
"3 in 1" Mulching, Bagging & Siding Discharge

Replaces OEM
mtd   This is OEM
        Fits MTD/Yard-Man Yard Bug rear engine rider Get Details part number 9420651
Length of Blade 30" (A)
  Description Width (B) Center Hole (C) Center to Center (D) Requirements  

335646 Image
P/N : 335646
STANDARD BLADE

Replaces OEM
mtd   7420193
mtd   7420256
mtd   7420256A
mtd   9420256A
3"   3/8"    2 1/2"   Get Details part number 335646