[dbc]

Re: (1977) 85 HP Johnson not cooling..just replaced impeller.

[appamatto]

Re: (1977) 85 HP Johnson not cooling..just replaced impeller.

[thefranksteak]

I was wondering that if i have it idling with "muffs", is water suppose to circulate through the hoses and exit through the portal (pee hole)? And if no water is present, what would be the next best step to take? I appreciate any input on this pesky task. here

[pj]

Remove the shift rod screw that protrudes from beneath the engine cover. Remove the lower unit bolt that's threaded upward beneath the anticavitation plate in front of the trim tab with a thin-walled, 5/8-inch socket. more

[luna0417]

Remove the impeller and any shims installed below it. Remove the impeller key and sleeve and any shims installed above the impeller. Unsnap the shift link from the reverse gate.

[videodude]

Pull the lower unit straight down, without bending the driveshaft or shift rod or damaging the water tube. [links]

[nikitakit]

A Johnson outboard motor's lower unit contains the propeller shaft or, in the case of the jet drive, an impeller shaft. It also houses the drive gears, the driveshaft that comes down from the engine and the water pump that cools the motor. There are slight differences between the method for removing a light duty lower unit, most often found on motors of less than 70 horsepower, and for removing a heavy duty lower unit used on motors of 70 horsepower and up. The method for removing the jet drive is the same, regardless of its horsepower.