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    need prop advice

    I have a 1977 35hp Johnson on a 1448 aluminum flat. 12 gallons gas, two batteries,trolling motor, 1/2" plywood floor, 300 pounds people. With Solas aluminum prop 10.5X11 max wot 5780 rpms 25 mph hardline tach.. Bought a new Solas Saturn 10.5x11 stainless prop. With new prop max wot rpms are 6030...
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    Key switch sticks in start position

    I have OMC side mount control box with red plug. Key switch sticks in start position unless I turn it back to run position. Can I lubricate switch and if so how or do I need a new switch?
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    1966 20 HP Johnson no fire top cylinder

    Coil tested ok so changed points still no fire. Put in new coil and no fire. Reading continuity on plug wire. Thinking condenser next thing am I missing something.
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    1996 28 hp gear case compatibility with 1970 20 hp

    Looked at a 1996 28 spl long shaft and it has a split gear case that looks like my 1970 20 hp gear case. Are these interchangeable?
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    1977 35 hp Johnson water intake revision on gear case

    Have a new to me J35EL77H. Picked up a new water pump kit 389890 today and paperwork in box explains how to drill two 5/32" on each side of gear case above intake screens below ventilation plate. Also says to measure two holes on forward edge of exhaust of housing and if 13/32" remove lower...
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    35EL77H Control box compatibility ?

    Just purchased a 77 Johnson 35 hp electric start and previous owner cut the wiring harness at control box. I have the single lever control box with red plug. Red plug on control box has six pins and black plug on motor has five pins. The purple wire (high temp alarm) is the extra wire on...
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    Rehubbed prop issues

    Picked up two OMC 9x10 aluminum props that were rehubbed from the prop shop yesterday. Instructions were to wait until today before using and to operate at slow speed for 15 minutes before loading This afternoon after installing one of the props on 20 hp Johnson I noticed that when I turned the...
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    NO FIRE TOP CYLINDER J10ROEOE

    While checking spark on this engine bottom jumps 1/2'" gap with blue spark with a snap to it; but top will only jump 3/16" intermittently if at all. I then switched top plug wire to bottom side of coil and spark jumps 1/2" gap so plug wire is good. Should I get a new coil at this point or...
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    1997 mariner 3.3 shift rod came out

    While removing the water pump housing shift rod came out with it. I put it back in until it bottomed out then slowly pulled up and down approx 3/4" it felt like it was shifting but the prop spins freely and drive shaft doesn't. I'm hoping I can repair it without disassembling the gear case...
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    1966 Johnson vs newer models with flow through exhaust

    I have a 1966 20 hp Johnson on a heavy 1448 welded alum flat. It runs great and pushes boat plus 23 mph and I cruise at 18 mph (Me, 6 gal gas, tool box, troll motor and battery). Problem is that with a second person boat will not plane. I'm looking at used outboards 20 to 35 hp in my area. The...
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    1996 88 SPL OVERHEAT

    Over heat alarm going off at cruising speed but stops at lower rpm. From research I'm thinking possibly thermostats but more likely flow deflectors in heads. A couple questions: Can thermostat housing be removed without removing power head? To clean out water jackets in heads and replace...
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    Johnson FD20 intake screen plug removal

    While in the process of replacing water pump on FD20 I noticed the intake screen is smashed in. What is the process to remove the intake screen plug?
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    1966 Johnson FD20 Excess gas fromexhaust

    I recently purchased a 1966 Johnson FD20C. I replaced the two fuel hoses to and from fuel pump, oil return line with clear tubing, fuel pump, new needle and seat, new float, and new packing washers on low speed adjustment needle (old packing washers deteriorated.) Took out for test run and after...
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    Carb problems on 1970 20 hp Johnson.

    Bought a Johnson 20rl70, removed carb and cleaned,checked float setting and verified needle and seat closing, changed fuel pump and hoses. Put motor in a drum and it started easily and after adjusting low speed jet idled smoothly. Took boat out for test run and when I open throttle engine...
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