To purchase parts for the 300BU (Main Bottom Assembly - Traction RF044400):
- Reference the part needed from the parts diagram and refer to the parts list below.
- Copy the Part Number and paste it into the search window above to see availability and pricing.
- Confirm your parts selection and "Add To Cart".
| ITEM | QTY | PART NUMBER | DESCRIPTION |
| 1A | 1 | MP424400 | BRACKET, MOUNT, AXLE/ TRANSAXLE, ASM. (20" MODELS) |
| 1B | 1 | MP440800 | BRACKET, MOUNT, 24", AXLE/TRANSAXLE, ASM. (24" & 30" MODELS) |
| 2 | 1 | MP555500 | TRANSAXLE, MARK 400 |
| 3 | 2 | PG001801 | BRACKET, TRANSAXLE, PAINTED |
| 4 | 4 | NB6545 | SCREW, CAP, HH, 5/16"-18 X 1" |
| 5 | 4 | NB3265 | NUT, LOCK, 5/16"-18, NC |
| 6 | 2 | BA003300 | KEY, 3/16 X 1.50 |
| 7 | 2 | NB018500 | RING, RETAINER, 3/4", C-STYLE, HD |
| 8 | 2 | MP409800 | WHEEL, 8"X2", DRIVE, 3/4"BORE, GREY |
| 9 | 4 | NB9302 | SCREW, SET, 1/4-20 X 3/8, KNURL CUP POINT |
| 10 | 2 | NB9505 | WASHER, FLAT, 5/16" X 1 1/2" |
| 11 | 2 | MP411700 | CASTER, 4", SWIVEL, 400LB CAP. |
| 12 | 20 | NB9267 | WASHER, FLAT, 5/16" |
| 13 | 14 | NB6111 | WASHER, LOCK, 5/16" |
| 14 | 14 | NB9745 | SCREW, CAP, 5/16"-18 X 3/4" |