![MTD Lawn Mower Replacement For Model 121-838E000 (1991)](images/mtd_logo.png)
MTD Lawn Mower Replacement Parts For Model 121-838E000 (1991)
![MTD 121-838E000 (1991) Lawn Mower Page A Diagram](images/mtd/121-838E000_(1991)_WW_1.gif)
![MTD 121-838E000 (1991) Lawn Mower 731-0609 OEM replacement Control Handle Ass'y. L.H.](images2/photo_not_available.png)
Part Number:731-0609
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 731-0609 OEM replacement Control Handle Ass'y. L.H.](images2/photo_not_available.png)
Part Number:731-0609
Discontinued
Part Number:731-1023
Discontinued
Note: (Rear Discharge Models 836r, 836r 837r & 838r Only)
Part Number:710-0796
Usually ships in 7 - 12 business days
Note: (Optional Parts)
Part Number:731-0817A
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 931-0524 OEM replacement Control Disc Pin](images2/photo_not_available.png)
Part Number:931-0524
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 731-0818 OEM replacement Clutch Panel Half](images2/photo_not_available.png)
Part Number:731-0818
Discontinued
Part Number:931-0972
Usually ships in 7 - 12 business days
Note: (Attaching Throttle Wire to Lever Modles 466r, 469r, 476r and 479r: Use Upper Hole in Lever as Shown. All Other Models: Use Lowe
![MTD 121-838E000 (1991) Lawn Mower 731-0354 OEM replacement Hub Cap Black (4-1/4-inch Dia.](images2/photo_not_available.png)
Part Number:731-0354
Usually ships in 7 - 12 business days
Note: (Optional)
![MTD 121-838E000 (1991) Lawn Mower 731-0355A OEM replacement Hub Cap Gray (4-1/4-inch Dia.)](images2/photo_not_available.png)
Part Number:731-0355A
Usually ships in 7 - 12 business days
Note: (Optional)
Part Number:710-0946
Usually ships in 7 - 12 business days
Note: (Rear Discharge Models 836r, 836r 837r & 838r Only)
Part Number:749-0439E-0637
Usually ships in 7 - 12 business days
Note: (Incl. Ref. No. 9)
![MTD 121-838E000 (1991) Lawn Mower 16129A-0637 OEM replacement Bracket-panel Sup](images2/photo_not_available.png)
Part Number:16129A-0637
Usually ships in 7 - 12 business days
Note: (Optional Parts)
![MTD 121-838E000 (1991) Lawn Mower 16862 OEM replacement Panel Assy-catcher](images2/photo_not_available.png)
Part Number:16862
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 17095A-0637 OEM replacement Door-top Discharge](images2/photo_not_available.png)
Part Number:17095A-0637
Discontinued
Part Number:936-0211
Discontinued
Note: (Not Shown)(46" Deck Models Only)
Part Number:732-0483A
Usually ships in 7 - 12 business days
Note: (Optional Parts)
![MTD 121-838E000 (1991) Lawn Mower 747-0514 OEM replacement Pivot Pin .187" Dia. x 7.25" Lg.](images2/photo_not_available.png)
Part Number:747-0514
Discontinued
Part Number:910-0289
Usually ships in 7 - 12 business days
Note: for Faster Service Obtain Standard Nuts Locally. if These Items Cannot Be Obtained Locally, Order by Part Number and Size as Sho
Part Number:710-0751
In Stock
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num
Part Number:912-0287
Usually ships in 7 - 12 business days
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
Part Number:936-0329
Usually ships in 7 - 12 business days
Note: (for Model E633e)
![MTD 121-838E000 (1991) Lawn Mower 747-0705-0637 OEM replacement Frame-catcher-fr](images2/photo_not_available.png)
Part Number:747-0705-0637
Usually ships in 7 - 12 business days
Note: (Rear Discharge Models 836r, 836r 837r & 838r Only)
Part Number:736-0258
Usually ships in 7 - 12 business days
Note: (Once This Piece Is Put on Tractor, It Doesn’t Need to Be Removed When Snow Thrower Is Removed From Tractor)
Part Number:753-0833
Backorder: No ETA
Note: (Not Shown)
Part Number:735-0639
Discontinued
Note: (Optional)
![MTD 121-838E000 (1991) Lawn Mower 712-0109 OEM replacement Key, 3/16" x 1"](images2/photo_not_available.png)
Part Number:712-0109
Discontinued
Part Number:946-0674A
In Stock
Note: for Model 848c Only.
Part Number:964-0082
Discontinued
Note: For Model 808
![MTD 121-838E000 (1991) Lawn Mower 764-0256 OEM replacement 21" Top Discharge Grass Bag- Gray](images2/photo_not_available.png)
Part Number:764-0256
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 14835 OEM replacement Retaining Strip](images2/photo_not_available.png)
Part Number:14835
Discontinued
Part Number:710-0323
Usually ships in 7 - 12 business days
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
Part Number:736-0204
Usually ships in 7 - 12 business days
Note: (Optional)
![MTD 121-838E000 (1991) Lawn Mower 17055B OEM replacement Chain- Axle Ass'y.](images2/photo_not_available.png)
Part Number:17055B
Discontinued
Part Number:710-0352
Usually ships in 7 - 12 business days
Note: Not Part of Transmission Complete
Part Number:941-0180
Discontinued
Note: (106f)
![MTD 121-838E000 (1991) Lawn Mower 749-0778 OEM replacement Arm-catcher Suppor](images2/photo_not_available.png)
Part Number:749-0778
Discontinued
Note: (Rear Discharge Models 836r, 836r 837r & 838r Only)
![MTD 121-838E000 (1991) Lawn Mower 912-0296 OEM replacement Nut Hex Lock 3/8-2](images2/photo_not_available.png)
Part Number:912-0296
Discontinued
Note: Models 820 Thru 829
Part Number:913-0353
Discontinued
Part Number:731-0564
Discontinued
Note: (Models 420r Thru 429r Only)
![MTD 121-838E000 (1991) Lawn Mower 731-0672A OEM replacement Flap-rr](images2/photo_not_available.png)
Part Number:731-0672A
Discontinued
Part Number:710-1025
Usually ships in 7 - 12 business days
Note: for Models 460r Thru 468r Only.
Part Number:753-0485
Discontinued
Note: Used With Splined Crankshaft
Part Number:936-0453
Discontinued
Note: Used With Splined Crankshaft
![MTD 121-838E000 (1991) Lawn Mower 782-0521 OEM replacement Arm Connect-hgt-ad](images2/photo_not_available.png)
Part Number:782-0521
Discontinued
Note: New Part
Part Number:710-0757
Backorder: No ETA
Note: (Units With Manual Pto.)
Part Number:748-0190
Usually ships in 7 - 12 business days
![MTD 121-838E000 (1991) Lawn Mower 956-0502 OEM replacement Pulley Half - 2 Reqd.](images2/photo_not_available.png)
Part Number:956-0502
Discontinued
Note: (Used W/Splined Adapter)
Part Number:936-0119
In Stock
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
![MTD 121-838E000 (1991) Lawn Mower 16136C-0637 OEM replacement Bracket Assy-rh Hn](images2/photo_not_available.png)
Part Number:16136C-0637
Discontinued
Note: New Part
Part Number:16137C-0637
Discontinued
Note: New Part
Part Number:710-0260A
In Stock
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
Part Number:710-0603
Usually ships in 7 - 12 business days
Note: For Models 147h and 149c Only.
Part Number:732-0606
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 932-0362 OEM replacement Spring-extension](images2/photo_not_available.png)
Part Number:932-0362
Discontinued
Part Number:736-0242
In Stock
Note: Not Used in This Application
![MTD 121-838E000 (1991) Lawn Mower 750-0624 OEM replacement Spacer-shld .500 X](images2/photo_not_available.png)
Part Number:750-0624
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 777-5902 OEM replacement Instruction Label](images2/photo_not_available.png)
Part Number:777-5902
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 777-5812 OEM replacement Control Label-throttle](images2/photo_not_available.png)
Part Number:777-5812
Usually ships in 7 - 12 business days
![MTD 121-838E000 (1991) Lawn Mower 738-0137 OEM replacement Shld. Scr. .342](images2/photo_not_available.png)
Part Number:738-0137
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 734-1412 OEM replacement 8 X 1.75 T Tread](images2/photo_not_available.png)
Part Number:734-1412
Usually ships in 7 - 12 business days
Note: No Longer Available
![MTD 121-838E000 (1991) Lawn Mower 726-0175 OEM replacement Clamp](images2/photo_not_available.png)
Part Number:726-0175
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 10647 OEM replacement Hub Cap](images2/photo_not_available.png)
Part Number:10647
Discontinued
Note: (Rear)
![MTD 121-838E000 (1991) Lawn Mower 936-0450 OEM replacement Washer-bell 1.008x](images2/photo_not_available.png)
Part Number:936-0450
Discontinued
Note: Used W/Splined Adapter
![MTD 121-838E000 (1991) Lawn Mower 748-0332 OEM replacement Crankshaft Spacer](images2/photo_not_available.png)
Part Number:748-0332
Usually ships in 7 - 12 business days
Note: (Models 234r, 236r & 238r Only)
Part Number:731-0880
Usually ships in 7 - 12 business days
Note: (Top Discharge Models 175r, 176r & 177r Only)
![MTD 121-838E000 (1991) Lawn Mower 710-0748 OEM replacement Screw-pan Hd Tapp](images2/photo_not_available.png)
Part Number:710-0748
Discontinued
Note: (Used W/Ref. #22)
![MTD 121-838E000 (1991) Lawn Mower 16542B OEM replacement Lower Battery Tray](images2/photo_not_available.png)
Part Number:16542B
Usually ships in 7 - 12 business days
Part Number:731-0891A
Usually ships in 7 - 12 business days
Part Number:925-0201
In Stock
Note: Electric Start Models Only
Part Number:925-0873
Discontinued
Note: If Equipped
Part Number:946-0710A
In Stock
Note: Not Part of Transmission Complete
Part Number:731-0801
Discontinued
Note: (Models 460r Thru 469r Only)
Part Number:925-0727
Usually ships in 7 - 12 business days
Note: If Equipped
![MTD 121-838E000 (1991) Lawn Mower 925-1442 OEM replacement Wire Harness](images2/photo_not_available.png)
Part Number:925-1442
Discontinued
Note: If Equipped
Part Number:925-1206
Discontinued
Note: If Equipped
![MTD 121-838E000 (1991) Lawn Mower 96859 OEM replacement Replaced And Merged With: Mtd9](images2/photo_not_available.png)
Part Number:96859
Usually ships in 7 - 12 business days
![MTD 121-838E000 (1991) Lawn Mower 738-0234 OEM replacement Screw-shld .500 Di](images2/photo_not_available.png)
Part Number:738-0234
Usually ships in 7 - 12 business days
Note: Special
![MTD 121-838E000 (1991) Lawn Mower 982-7509-0637 OEM replacement Front Axle Ass'y](images2/photo_not_available.png)
Part Number:982-7509-0637
Discontinued
Note: New Part
![MTD 121-838E000 (1991) Lawn Mower 911-0313 OEM replacement Sleeve](images2/photo_not_available.png)
Part Number:911-0313
Discontinued
Note: (Used on Tractors W/Serial No. 192,001 & Above)
![MTD 121-838E000 (1991) Lawn Mower 736-0221 OEM replacement Washer-intern L 3/](images2/photo_not_available.png)
Part Number:736-0221
Discontinued
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
![MTD 121-838E000 (1991) Lawn Mower 938-0705 OEM replacement Screw-shld](images2/photo_not_available.png)
Part Number:938-0705
Discontinued
Part Number:753-0833
Backorder: No ETA
Note: (Not Shown)
Part Number:753-0833
Backorder: No ETA
Note: (Not Shown)
Part Number:731-13116-1
In Stock
Note: (Optional Parts)
Part Number:710-0841
Usually ships in 7 - 12 business days
Part Number:712-0324
In Stock
Note: Part of Motor, Switch & Cord Ass\\\\\\\'y. Comp. (Ref. 49)
![MTD 121-838E000 (1991) Lawn Mower 910-0671 OEM replacement Bolt-carriage-curv](images2/photo_not_available.png)
Part Number:910-0671
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 711-0805 OEM replacement Pin-shld 3/8-24x1.](images2/photo_not_available.png)
Part Number:711-0805
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 946-0480A OEM replacement Cable-control](images2/photo_not_available.png)
Part Number:946-0480A
Discontinued
Part Number:714-0115
Usually ships in 7 - 12 business days
Part Number:712-0711
In Stock
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num
![MTD 121-838E000 (1991) Lawn Mower 731-0884 OEM replacement Deflector-side Chu](images2/photo_not_available.png)
Part Number:731-0884
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 741-0522 OEM replacement Use 941-0522](images2/photo_not_available.png)
Part Number:741-0522
Usually ships in 7 - 12 business days
![MTD 121-838E000 (1991) Lawn Mower 753-0430A OEM replacement Control Housing Comp.](images2/photo_not_available.png)
Part Number:753-0430A
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 17053A OEM replacement Chain Cover](images2/photo_not_available.png)
Part Number:17053A
Discontinued
Part Number:710-0599
In Stock
Note: Not Used on Units With Electric P.T.O.
![MTD 121-838E000 (1991) Lawn Mower 938-0719A OEM replacement Rear Axle Ass'y.](images2/photo_not_available.png)
Part Number:938-0719A
Discontinued
Part Number:741-0324A
Usually ships in 7 - 12 business days
Note: Models 820 Thru 829
Part Number:936-0160
In Stock
Note: (Not Part of Deck Assembly Complete)
Part Number:710-0751
In Stock
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num
![MTD 121-838E000 (1991) Lawn Mower 917-0417B OEM replacement Transmission-comp](images2/photo_not_available.png)
Part Number:917-0417B
Discontinued
Note: (See Breakdown)
![MTD 121-838E000 (1991) Lawn Mower 16500A-0637 OEM replacement Bearing-cup Hex](images2/photo_not_available.png)
Part Number:16500A-0637
Discontinued
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:910-0429
Usually ships in 7 - 12 business days
Note: (Optional Parts)
![MTD 121-838E000 (1991) Lawn Mower 710-1055 OEM replacement Screw-hex 3/8-24 X](images2/photo_not_available.png)
Part Number:710-1055
Usually ships in 7 - 12 business days
Note: Blade 3 Bolt Mount
Part Number:712-0241
Backorder: No ETA
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if These Items Cannot Be Obtained Locally, Order by Part Num
![MTD 121-838E000 (1991) Lawn Mower 936-0108 OEM replacement Flat Washer, .510x .750 X .033](images2/photo_not_available.png)
Part Number:936-0108
Usually ships in 7 - 12 business days
Part Number:749-0764A-0637
Usually ships in 7 - 12 business days
Note: New Part
Part Number:712-0266A
In Stock
Note: for Models 587b, 596 and 598.
![MTD 121-838E000 (1991) Lawn Mower 725-1538 OEM replacement Wire Harness](images2/photo_not_available.png)
Part Number:725-1538
Discontinued
Part Number:925-1428
Discontinued
Note: If Equipped
Part Number:925-0298
Discontinued
Note: If Equipped
![MTD 121-838E000 (1991) Lawn Mower Page B Diagram](images/mtd/121-838E000_(1991)_WW_2.gif)
Part Number:710-1062
Usually ships in 7 - 12 business days
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an
Part Number:936-0329
Usually ships in 7 - 12 business days
Note: (for Model E633e)
![MTD 121-838E000 (1991) Lawn Mower 717-0418A OEM replacement Upper Hsg Hf](images2/photo_not_available.png)
Part Number:717-0418A
Discontinued
Part Number:713-0400
Discontinued
Part Number:936-0336
In Stock
Note: Use Applicable Flat Washers in This Application Allowing .006/.014 In. End-Play.
Part Number:941-0413
Usually ships in 7 - 12 business days
Note: Part of Transmission Complete, Ref. No. 36.
![MTD 121-838E000 (1991) Lawn Mower 16500A-0637 OEM replacement Bearing-cup Hex](images2/photo_not_available.png)
Part Number:16500A-0637
Discontinued
Note: Part of Transmission Complete, Ref. No. 36.
![MTD 121-838E000 (1991) Lawn Mower 736-0314 OEM replacement Thrust Wash. .382" I.d. X](images2/photo_not_available.png)
Part Number:736-0314
Usually ships in 7 - 12 business days
Part Number:741-0479
Usually ships in 7 - 12 business days
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:917-1216
Discontinued
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:748-0208A
Usually ships in 7 - 12 business days
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:721-0212
Discontinued
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:756-0330A
Discontinued
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:736-0270
In Stock
Note: If Equipped - Not Part of Transmission Complete
Part Number:712-04326
Usually ships in 7 - 12 business days
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:738-0440
Usually ships in 7 - 12 business days
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:736-0344
In Stock
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:938-0826
In Stock
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:956-0558
Usually ships in 7 - 12 business days
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:741-0556
Usually ships in 7 - 12 business days
Note: Not Part of Transmission Complete
Part Number:736-0270
In Stock
Note: If Equipped - Not Part of Transmission Complete
![MTD 121-838E000 (1991) Lawn Mower 17052A OEM replacement Bracket Assy-idler](images2/photo_not_available.png)
Part Number:17052A
Discontinued
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:712-0138
In Stock
Note: (Not Part of Transmission Complete) - Not Part of Transmission Complete
Part Number:732-0357A
Backorder: No ETA
Note: New Part Not Part of Transmission Complete - Not Part of Transmission Complete
![MTD 121-838E000 (1991) Lawn Mower 717-0419B OEM replacement Lower Hsg. Half](images2/photo_not_available.png)
Part Number:717-0419B
Usually ships in 7 - 12 business days
Note: New Part
Part Number:941-0415
Usually ships in 7 - 12 business days
Note: Part of Transmission Complete, Ref. No. 36.
![MTD 121-838E000 (1991) Lawn Mower 717-0616A OEM replacement Shaft Assembly W](images2/photo_not_available.png)
Part Number:717-0616A
Discontinued
Part Number:741-0414
Usually ships in 7 - 12 business days
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:721-0213
In Stock
Note: Part of Transmission Complete, Ref. No. 36.
![MTD 121-838E000 (1991) Lawn Mower 717-0616A OEM replacement Shaft Assembly W](images2/photo_not_available.png)
Part Number:717-0616A
Discontinued
![MTD 121-838E000 (1991) Lawn Mower 936-0722 OEM replacement Washer-lock #10](images2/photo_not_available.png)
Part Number:936-0722
Discontinued
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:710-0651
Usually ships in 7 - 12 business days
Note: Part of Transmission Complete, Ref. No. 36.
Part Number:936-0410
Discontinued
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
![MTD 121-838E000 (1991) Lawn Mower 17718 OEM replacement Transmission Belt Guard](images2/photo_not_available.png)
Part Number:17718
Discontinued
Note: (Not Part of Transmission Complete) - Not Part of Transmission Complete
![MTD 121-838E000 (1991) Lawn Mower 17064-0637 OEM replacement Cover-belt](images2/photo_not_available.png)
Part Number:17064-0637
Discontinued
Part Number:710-0352
Usually ships in 7 - 12 business days
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:710-0599
In Stock
Note: Not Used on Units With Electric P.T.O. - Not Part of Transmission Complete
Part Number:912-0287
Usually ships in 7 - 12 business days
Note: for Faster Service Obtain Standard Nuts, Bolts and Washers Locally. if Items Cannot Be Obtained Locally, Order by Part Number an - Not Part of Transmission Complete
Part Number:736-0270
In Stock
Note: If Equipped - Not Part of Transmission Complete
Part Number:936-0329
Usually ships in 7 - 12 business days
Note: (for Model E633e) - Not Part of Transmission Complete
Part Number:946-0710A
In Stock
Note: Not Part of Transmission Complete - Not Part of Transmission Complete
Part Number:747-0549
Discontinued
Note: (Not Part of Transmission Complete) - Not Part of Transmission Complete
![MTD 121-838E000 (1991) Lawn Mower 917-0417B OEM replacement Transmission-comp](images2/photo_not_available.png)
Part Number:917-0417B
Discontinued
Note: (See Breakdown)