Johnson/Evinrude Outboard Lower Gearcase Parts Diagram
The diagram below is applicable for the following models:
- Typical V6 outboards
| Ref | Description | Sierra # | Replaces | Qty |
|---|---|---|---|---|
| 1 | Gearcase housing | - | 438050 | 1 |
| 2 | Shift rod (long) | - | 324407 | 1 |
| 2 | Shift rod (extra-long) | - | 324408 | 1 |
| 3 | Cover & shift rod | - | 435482 | 1 |
| 4 | Cover screw | 18-3369 | 302325 | 6 |
| 5 | Shift rod o-ring | 18-7137 | 318372 | 1 |
| 6 | Shift housing gasket | 18-0110 | 324670 | 1 |
| 7 | Magnetic drain screw | 18-2378 | 318544 | 2 |
| 8 | Plugs o-rings | 18-7145 | 333572 | 2 |
| 9 | Screw | - | 324852 | 1 |
| 10 | O-ring | 18-7120 | 307853 | 1 |
| 11 | Gearcase to housing screw | - | 320741 | 5 |
| 12 | Water intake screen | - | 321123 | 1 |
| 13 | Anode | 18-6024 | 393023 | 1 |
| 14 | Trim tab | - | 327640 | 1 |
| 15 | Trim tab screw | - | 313715 | 1 |
| 16 | Upper oil seal | 18-2061 | 329922 | 1 |
| 17 | Lower oil seal | 18-2062 | 329923 | 1 |
| 18 | Housing to gearcase screw | - | 316534 | 4 |
| 19 | Bearing housing | - | 438963 | 1 |
| 20 | Bearing housing o-ring | 18-7130 | 314728 | 1 |
| 21 | Shim (.003) | 18-2229 | 323362 | AR |
| 21 | Shim (.004) | 18-2230 | 323361 | AR |
| 21 | Shim (.005) | 18-2231 | 314745 | AR |
| 22 | Pinion thrust washer | 18-0200 | 327656 | 1 |
| 23 | Pinion thrust bearing | 18-1365 | 387665 | 1 |
| 24 | Drive shaft (long) | Varies | 435755 | 1 |
| 24 | Drive shaft (extra-long) | Varies | 435756 | 1 |
| 25 | Pinion bearing | 18-1117 | 387817 | 1 |
| 26 | Pinion nut | 18-3719 | 314730 | 1 |
| 27 | Cup & plate assembly | 18-3346 | 330380 | 1 |
| 28 | Impeller key | 18-3299 | 331107 | 1 |
| 29 | Impeller housing seal | 18-7963 | 331353 | 1 |
| 30 | Impeller | 18-3059 | 397131 | 1 |
| 31 | Cup & plate assembly | 18-3346 | 330379 | 1 |
| 32 | Drive shaft o-ring | 18-7158 | 310585 | 1 |
| 33 | Water pump housing | 18-3130 | 395040 | 1 |
| 34 | Water tube grommet | 18-2703 | 314008 | 1 |
| 35 | Pump cover | - | 321159 | 1 |
| 36 | Impeller housing screw | 18-3136 | 323626 | 4 |
| 37 | Grommet | 18-2704 | 320943 | 1 |
| 38 | Bearing housing assembly | - | 389455 | 1 |
| 39 | Detent ball | 18-1501 | 160084 | 1 |
| 40 | Detent spring | 18-1502 | 911962 | 1 |
| 41 | Housing pin | 18-3765 | 331880 | 1 |
| 42 | Shifter detent | - | 323946 | 1 |
| 43 | Shift lever pin | - | 328825 | 1 |
| 44 | Shift shaft | 18-3763 | 322941 | 1 |
| 45 | Shifter cradler | 18-3766 | 334163 | 1 |
| 46 | Shift lever | 18-3762 | 322938 | 1 |
| 47 | Forward gear thrust washer | 18-0199 | 327669 | 1 |
| 48 | Forward gear thrust bearing | 18-1370 | 389042 | 1 |
| 49 | Forward & pinion gear set | NSS | 435020 | 1 |
| 50 | Sliding clutch | 18-2216 | 337774 | 1 |
| 51 | Clutch dog pin | 18-1714 | 313448 | 1 |
| 52 | Retaining spring | 18-2399 | 324369 | 1 |
| 53 | Propeller shaft | 18-2187 | 395209 | 1 |
| 54 | Reverse gear | NSS | 910994 | 1 |
| 55 | Reverse gear thrust bearing | 18-1366 | 382408 | 1 |
| 56 | Reverse gear thrust washer | 18-0195 | 314731 | 1 |
| 57 | Bearing housing retainer plate | - | 321174 | 1 |
| 58 | Retaining rings | - | 321171 | 2 |
| 59 | Beainrg housing o-ring | 18-7133 | 305123 | 1 |
| 60 | Bearing carrier (front) | 18-1351 | 382407 | 1 |
| 61 | Bearing housing | - | 397094 | 1 |
| 62 | Retainer screw | 18-2377 | 316563 | 4 |
| 63 | O-ring | 18-7109 | 317178 | 1 |
| 64 | Roller bearing (aft) | 18-1158 | 387247 | 1 |
| 65 | Prop shaft oil seals | 18-2002 | 320862 | 2 |
| 66 | Thrust washer | 18-4223 | 333592 | 1 |
| 68 | Propeller | - | Various | 1 |
| 69 | Prop nut spacer | 18-4231 | 320570 | 1 |
| 70 | Propeller nut | 18-3708-1 | 398042 | 1 |
| 71 | Prop nut cotter pin | 18-3741 | 306394 | 1 |
| 72 | Gear housing seal kit | 18-2623 | 396353 | 1 |
| 73 | Water pump repair kit | 18-3392 | 434421 | 1 |
| 74 | Grommet | 18-270 | 321008 | 1 |
| 75 | Shift rod spacer | - | 321122 | 1 |
| 76 | Impeller housing plate gasket | 18-2557 | 324701 | 1 |
| 77 | Drive shaft o-ring | 18-7158 | 310585 | 1 |
| 78 | Cover to impeller screw | 18-3135 | 306643 | 2 |
| 79 | Drive shaft to crankcase o-ring | 18-7158 | 310585 | 1 |
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