Pulley Hub and Bull Gear Assembly, Speed Change Assembly 4 Hp
 | Item No. | Part No. | Description | Item No. | Part No. | Description |
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| 1 | 037-0654 | Top Bearing Cap | 25 | 037-0609 | Bull Gear Shifting Rod | | 2 | 019-0039 | Wave Spring | 26 | 1295 | Roll Pin | | 3 | 018-0036 | Bearing | 27 | 037-0569 | Hi-Low Detent Plate | | 4 | 016-0050 | Snap Ring | 28 | 1522 | Roll Pin | | 5 | 037-0555 | Lock Nut | 29 | 1259 | Plastic Ball | | 6 | 037-0565 | Top Pulley Flange | 30 | 037-0559 | Hi-Low Shift Crank | | 7 | 037-0557 | Pulley Hub | 31 | 037-0561 | Hi-Low Pinion Block | | 8 | 037-0564 | Bottom Pulley Flange | 32 | 019-0035 | Spring (Plunger) | | 9 | 037-0562 | Drive Clutches | 33 | 037-0560 | Hi-Low Plunger | | 10 | 1518 | Screws | 34 | 1326 | Screws | | 11 | 012-0013 | Screws | 35 | 1547-02 | Bearings | | 12 | 037-0589 | Oil Guard | 36 | 017-0036 | Woodruff Keys | | 13 | 037-0587 | Gear Hub | 37 | 012-0078 | Set Screw | | 14 | 037-0611 | Bearing Sleeve Flange | 38 | 037-0658 | Bull Gear Pinion | | 15 | 037-0610 | Bull Gear Bearing Sleeve | 39 | 037-0659 | Bearing Spacer | | 16 | 037-0655 | Sleeve Washer with Pins | 40 | 019-0038 | Wave Spring | | 17 | 019-0034 | Springs | 41 | 037-0660 | Bearing Caps | | 18 | 012-0084 | Screws | 42 | 037-0603 | Timing Pulley | | 19 | 018-0037 | Bearings Set of 3 | 43 | 015-0015 | Hex Nut | | 20 | 037-0599 | Bearing Spacer | 44 | 012-0060 | Screws | | 21 | 037-0588 | Bearing Lock Nut | 45 | 025-0006 | Timing Belt | | 22 | 037-0608 | Pinion Gear | 46 | 012-0087 | Screws | | 23 | 012-0085 | Set Screw | 47 | 037-0661 | Bull Gear | | 24 | 017-0037 | Woodruff Key | 48 | 037-0695 | Bull Gear Pinion Shaft |
| Item No. | Part No. | Description | Item No. | Part No. | Description | | 49 | 1195 | Screws | 66 | 013-0048 | Spiral Pin | | 50 | 037-0614 | Speed Change Shaft Bearing Blocks | 67 | 037-0627 | Master Link | | 51 | 037-0615 | Bronze Bearing | 68 | 037-0628 | Chain Hold Down | | 52 | 037-0616 | Speed Changer Plate | 69 | 1038-62 | Screws | | 53 | 037-0617 | Speed Changer Shaft | 70 | 037-0629 | Drum Shaft | | 54 | 017-0034 | Woodruff Key | 71 | 017-0051 | Drum Shaft Key | | 55 | 012-0078 | Set Screw | 72 | 014-0022 | Washer | | 56 | 037-0618 | Speed Changer Plate Arm | 73 | 015-0030 | Cap Nut | | 57 | 037-0619 | Speed Changer Sprocket Assy. | 74 | 037-0630 | Speed Control Worm Gear | | 58 | 037-0622 | Sprocket Spacer | 75 | 019-0036 | Spring Washer | | 59 | 037-0623 | Sprocket Shaft | 76 | 013-0047 | Spiral Pin | | 60 | 1426 | Set Screw | 77 | 037-0631 | Speed Changer Shaft | | 61 | 037-0624 | Speed Changer Drum-Gear | 78 | 1445 | Woodruff Key | | 62 | 037-0625 | Thrust Cap for Speed Changer Plate | 79 | 037-0632 | Spacer | | 63 | 018-0032 | Bearing | 80 | 037-0633 | Speed Control Handle | | 64 | 016-0047 | Snap Ring | 81 | 1475 | Caution Plate | | 65 | 037-0626 | Chain | 82 | 037-0694 | Bushing Bronze |
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