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    1988 Johnson 15 HP Prop/Thrust washer problem

    Howdy. I just got a new Solas aluminum prop for the 1988 Johnson 15 HP. The old prop was a Michigan Wheel prop. The thrust washer drops right into the hub easily on the old prop. On the new prop, it does not go all the way into the hub, even when pressing in with a vice (gently). Am I...
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    1988 15 HP Johnson, Speed

    Hello everyone. Well, I finally put a fish finder on my 14 ft V hull aluminum boat, with a 15 HP Johnson 2 stroke on the back. The fish finder has GPS, so now I can see that at full throttle, no wind, two adults in the boat, my max speed is 6.5 mph. Should I expect to go faster? Or, is that...
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    Water Pump Kit 1988 15 HP Jonson

    Hello. I did a bone headed thing and accidentally ran my 1988 Johnson 15 HP outboard dry. Naturally, I fried the water pump. I have the rebuild kit, and everything makes sense except one thing. There are 2 O rings; a large one and a small one. The large one helps seal the crankshaft opening...
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    Lean/Rich mixture

    Hello everyone. My motor is a 1988 Johnson 15 HP 2 cycle, rope pull starter. I am trying to bring it out of winter dormancy. I have fresh alcohol free gas, new fuel pump and tank hose, plugs, wires and coils. Hooked up with muffs the motor starts, runs for a few minutes, then starts to die...
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    1988 15 HP Johnson Throttle interlock lever

    Hello folks, My 1988 15 HP Johnson manual start motor has a nagging problem. The red throttle interlock lever keeps engaging at random times, preventing me from starting the motor out on the water. I have to pull the motor cover and disengage the red lever lever, then pull on the rope and it...
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    Add a drain plug to aluminum boat

    Hello Forum! I have a question regarding drain plugs. How do you add one to an aluminum boat? She is a 14 footer, plain old deep v aluminum boat. No drain. I am fairly handy and looking for a do it yourself solution. Does anybody have a good one? Thanks in advance for your help! The Waco Kid
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    Compatible Engine Cover

    Hello Forum, My question today is about engine covers. Will an engine cover/cowling from a 1992 Johnson 9.9 HP motor fit my 1988 15 HP motor? Please advise, and thanks for the help! The Waco Kid. Blazing Saddles Quote of the Day "What's a dazzling urbanite like you doing in a rustic...
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    Progree Backwards

    1988 15 HP rope start Johnson. (title should begin with Progress) The new hose from the tank, and new fuel pump fixed the fuel problem. Motor was starting and kept running, rope pull starter is fixed with the addition of the spacer washer in the bottom of the cup. My next issue became a...
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    1988 15 HP Johnson Power Pack

    1988 15 HP Johnson Power Pack, what is it and what does it do? Today I managed to install a new fuel pump and hoses on this motor, and now it keeps running. Fuel issue appears to have been solved. Still running into an issue with a misfiring cylinder once it warms up. One cylinder runs...
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    How mucg gas??

    Howdy everyone. I have a 15 HP Johnson 2 cycle, vintage 1988. It will be pushing around a 14 foot aluminum v hull fishing boat, usually with 2 people and a trolling motor. I have a 3 gallon gas tank. A fishing day will be on a lake, with a mix of trolling with the gas motor, and running...
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    Rope starter trouble 1988 Johnson 15 HP

    Hello all, The long center bolt that goes down through the rope pull starter on my 15 HP 1988 Johnson keeps working loose when I run the engine. I tried snugging it down really tight, and the mechanism sticks, and does not recoil back to ready. I am chewing up the pinion. Any suggestions...
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    1988 15 HP Johnson starts, won't keep running

    The 30 year old 15 HP Johnson starts! Runs hard and fast. But not for long. I did not time it, but seemed like 1 to 2 minutes. Dies, won't restart unless I pressurize with the bulb on the gas line. New, ethanol free gas in a nearly new plastic tank and hose. 50/1 mix with synthetic 2 cycle...
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    Re-attach lower unit to 1988 15HP Johnson

    Hello Folks, I am replacing the impeller in this old motor tomorrow. I found a Youtube video that shows everything pretty clearly, except for putting the lower unit back on the motor. I found some internet buzz that sounds like it can be tricky to get the drive shaft back into the top of the...
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    Convert Long Shaft to Regular

    Hello Everyone! This forum looks like a pretty cool place. I am brand new to outboards. My first one is a 1988 Johnson 15 HP Long shaft. It was free to a good home. My question tonight is, can it be converted to a Regular length? Looks like OMC added a 6" spacer between the lower unit and...
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