Cylinder And Crankcase Parts for 1978 Johnson 4 hp 4R78E Outboard Motor
Reference numbers in this diagram can be found in a light blue row below — scroll down to order.
| #1 — 389502 — CYLINDER AND C'CASE ASSY (1 required per assembly) | ||
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0389502 - Cylinder & Crankcase Assembly, NLA [ More info ] Unavailable |
| #2 — 314951 — SCREW, CYL. TO C'CASE (8 required per assembly) | ||
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| #3 — 304067 — PLUG, LARGE (1 required per assembly) | ||
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| #4 — 307588 — PLUG, SMALL (1 required per assembly) | ||
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0307588 - Core Plug [ More info ]
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| #5 — 322831 — SCREW, CENTER (2 required per assembly) | ||
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0322831 - Screw - Cylinder to Crankcase [ More info ]
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| #6 — 318494 — PLUG (1 required per assembly) | ||
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0318494 [ More info ] Unavailable Replaced by 0326194 |
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0326194 - Plug [ More info ] Unavailable |
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| #7 — 323447 — TUBE, CRANKCASE DRAIN (1 required per assembly) | ||
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0323447 [ More info ] Unavailable Replaced by 0328158 |
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0328158 - Metering Rod [ More info ]
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| #8 — 300402 — TAPER PIN (1 required per assembly) | ||
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| #9 — 323448 — TUBE, CRANKCASE DRAIN (1 required per assembly) | ||
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0323448 [ More info ] Unavailable Replaced by 0328159 |
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0328159 - Metering Rod [ More info ]
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| #10 — 323522 — HOSE (1 required per assembly) | ||
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0323522 - Water Deflector Hose, 11/16 inch [ More info ]
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| #11 — 322934 — CYLINDER HEAD (1 required per assembly) | ||
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0322934 - Cylinder Head [ More info ] Unavailable |
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0389969 - Cylinder Head [ More info ] Unavailable |
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0391309 - Cylinder Head [ More info ] Unavailable |
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0395711 - Cylinder Head & Tag [ More info ] Unavailable |
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0398131 - Cylinder Head & Tag [ More info ] Unavailable |
| #12 — 203130 — GASKET, CYLINDER HEAD (1 required per assembly) | ||
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0203130 - Head Gasket [ More info ]
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18-3841-2 - Head Gasket 203130 [ More info ]
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| #13 — 314951 — SCREW, CYLINDER HEAD (6 required per assembly) | ||
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| #14 — 323442 — GASKET, C'CASE TO COVER (1 required per assembly) | ||
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0323442 - Crankcase to Cover Gasket [ More info ]
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| #15 — 302812 — SCREW, CLAMP (1 required per assembly) | ||
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0302812 - . Screw, Cam Follower [ More info ]
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| #16 — 310441 — CLAMP, LEAD TO CYLINDER HEAD (2 required per assembly) | ||
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0310441 - J-Clamp [ More info ]
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| #17 — 386941 — SPARK PLUG, CHAMPION L77J4. WE RECOMMEND CHAMPION AND AC SPARKS PLUGS (2 required per assembly) | ||
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0386941 - S Plug L77JC4 [ More info ] Unavailable |
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0502194 - Spark Plug L77JC4 [ More info ] Unavailable |
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L77JC4 - Champion Spark Plug ( #821M) [ More info ]
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L77JC4 - Champion Spark Plug ( #821M) [ More info ]
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| #17 — 386939 — SPARK PLUG, AC M40FFX. WE RECOMMEND CHAMPION AND AC SPARKS PLUGS (2 required per assembly) | ||
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0386939 [ More info ] Unavailable Replaced by 0386941 |
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0386941 - S Plug L77JC4 [ More info ] Unavailable |
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0502194 - Spark Plug L77JC4 [ More info ] Unavailable |
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L77JC4 - Champion Spark Plug ( #821M) [ More info ]
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L77JC4 - Champion Spark Plug ( #821M) [ More info ]
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| #18 — 323263 — PLATE, EXHAUST COVER (1 required per assembly) | ||
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0323263 - Exhaust Cover Plate [ More info ]
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| #19 — 323445 — GASKET, COVER PLATE (1 required per assembly) | ||
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0323445 - Cover Plate Gasket [ More info ]
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| #20 — 302750 — SCREW, COVER PLATE (8 required per assembly) | ||
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0302750 - Throttle Cam Screw [ More info ]
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| #21 — 310493 — CLAMP, IGNITION LEADS (1 required per assembly) | ||
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0310441 - J-Clamp [ More info ]
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| #22 — 310503 — CLAMP, LEADS TO CYLINDER (1 required per assembly) | ||
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0310503 - Clamp - Cable [ More info ]
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| #23 — 389554 — POWER HEAD GASKET SET (1 required per assembly) | ||
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0389554 - Powerhead Gasket Set [ More info ] Unavailable |
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0439081 - Powerhead Gasket Set [ More info ]
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