[madhatter]

386084 - Impeller 9.9 hp, 15 hp 1974+, 18-3050 sierra

[xswqaazz]

18-3091 - Impeller replaces 389576 4 hp Deluxe and 4.5hp 1980-1997 [links]

[i5Steve]

 USE YOUR BACK ARROW TO NAVIGATE - unless otherwise noted, parts are arranged smaller motors to larger motors left to right top to bottom. As far as practicle, related parts are grouped together. Domestic on line orders - shipping and handling USPS air for $8.95 regardless of size.

[TigerWolf]

18-3001D - water pump kit for Johnson/Evinrude 5.5 hp 1959-1964 (details) more

[carol88miller]

375688 - Impeller 5 hp Johnson model TN Gale and Seaking 5hp with neutral clutch lever (details) [links]

[tsxparts01]

382221 - Impeller 1.5 and 2 hp Johnson/Evinrude 1969-1979 here

[jpi]

Comparing your motors OEM gearcase part number (in the chart below) to other years and horsepower driveshaft numbers will alleviate this issue. [links]

[jacobfan]

Later gearcases with upper driveshaft needle bearings required the driveshaft to be hardened in the area where the bearing touches the driveshaft. Never use a non-hardened (pre-1977) shaft in a needle bearing housing. The drive shafts are not stamped with a part number. To determine if the driveshaft has been hardened, you will have to visually inspect the shaft. The hardened area will be a different color due to the heat treatment.

[CoinOfLuck]

Comparing your motors OEM gearcase part number (in the chart below) to other years and horsepower driveshaft numbers will alleviate this issue. here

[JustGamerS]

There are differences in the forward gear bearings that need to be verified. The early models used a bronze bushing that was keyed to keep it in place, others had a needle bearing. here

[ihrhase]

As the outboards gained in horsepower, the original design started to reveal durability problems. When the 32 cu in motor came out (1977 25 hp) something had to give. Lots of things were done to make things better, but the three prong setup was the ultimate fix. here

[Zero]

Here is an image of the two engines.

[antz123]

You want to use 80-90w Hypoid outboard lower unit gear oil. It's specially desigined for water/marine use. You can get it for about $5 a quart at Wal-mart. There are lots of brands, but it doesn't matter much IMO. You'll also want a little hand pump so you can fill the gear case properly from the bottom up. They should sell it right next to the gear oil. Be sure to replace the small, white, nylon crush washers found beneath the DRAIN and VENT screws. Here are some pics and vids on how to do the job. Holler if you get stuck. [links]

[hypertux]

Re: '64 Evinrude Fastwin 18hp - Lower Unit Leak [links]

[Francises87]

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[rjebro]

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