Recent content by andymach23

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    Mariner 5hp 2 stroke won't rev out under load

    I've just put this motor back together after removing the power head and lower unit as it was blocked up by salt build-up in the drive shaft housing. When testing it today as a kicker on my boat, the motor seems to reach only about 1/2 throttle when in gear. The revs rise and fall a bit when...
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    Mariner 5hp 2 stroke: Is this normal? Pics attached!

    After sitting all winter my motor would not turn over at all. It's a kicker that just gets warmed up and isn't flushed. It's about 10 years old. If I get the motor back up and running I'll be flushing it every time in future. I found that there was dry salt cacked inside the drive shaft...
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    Fitting Mariner 5hp 2-stroke Powerhead Gasketet

    I was just wondering if this is fitted dry or are you supposed to use some sort of gasket sealant as well? I have a 1997 model. The same goes for the gasket between the oii seal housing and the powerhead. If sealant is required I have some RTV silicone sealant. Would that do? It doesn't seem...
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    Just wondering about thermostats and flushing!

    If you run your motor hard on the way back to the marina, then turn the motor off and get the hose to flush it using the hose attachment on the engine (80hp Yamaha 4-stroke), will the thermostat still be open as the engine is warm or will it close due to the cold water from the hose? I'm trying...
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    Mariner 5hp, Shift Rod Problem

    Hi Everyone, I've got a 5hp single cylininder 2-stroke, year 1999 I took the lower unit off and by accident moved the shift rod. I heard what sounded like a gear change and now the rod won't change any gears up or down. I think I have maybe pulled the rod up to much and lost the change...
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    9.9 Yamaha 4-Stroke as Kicker on 20 ft Boat

    I'm thinking of getting a F9.9 Yamaha as a kicker engine for my 20ft boat. I have currently got 5hp 2-stroke kicker and I think it has now died a salty death. I like the idea of the remote flusher on the 9.9. I've had the 5hp for 10 years and had no use out of it. It just hangs there and just...
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    Mariner 5 hp 2 stroke seized solid

    After sitting for the winter, I tried to turn over my 5 hp Mariner 1cyl 2-stroke and it is siezed solid. The pull cord won't move at all. The motor has had salt water use as a kicker. It is never flushed during the season. I just warm it up at the dock, so that it's ready to go in an emergency...
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    F80 Oil Contamination. Smells of gas!

    My F80 is year 2000 with carbs. My crankcase oil is getting contaminated, going a creamy color. It smells faintly of gas. I have left a sample in a clear container and nothing has separated out. If it was gas should it have separated out from the oil? If water was getting in, would that...
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    Gas in Oil maybe? Yamaha F80

    I drained the oil today and noticed a faint gasoiline smell coming from the oil. It's going a sort of sick grey/brown color quite quickly after changing the oil. I have done about 15 hours since changing it last. I did a river trip and tried to WOT the motor on every trip out. Is this typical...
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    How to troubleshoot milky crankcase oil on F80?

    The motor is year 2000. I got it used on my new boat in December. I changed the oil at the start of the season and it was milky. I have run about 5 hours so far and the oil is milky again. How should I start to figure this out? Is a leak down test the best bet for this? Thanks Andy
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    Mariner 5hp 2-stroke piston seizing?

    This engine is 1999 and is a little used kicker in salt water. I have owned the engine from new and it is only run before each trip to warm it up in case my main engine breaks down. When running now it gives a metallic sounding chirp. This only happens once every couple of seconds at idle and...
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    Keeping outboard leg submerged in salt water

    I got a new boat and ran into problems with my marina as my boat plus engine is slightly too long for my salt water berth. The marina have just agreed to let me keep my berth but on the condition that I keep the motor, 2000 Yam F80 4-stroke, in the fully down position, to reduce the overall...
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    F80-Tilt Rod Assy oil leak

    I have an oil leak from the PTT tilt rod. It seems to be just a slight leak from the seal. I am pulling my boat out to fit Smart Tabs soon, and was maybe going to tackle the leak. Is it an easy quick job? If its tricky and i could run into problems I will just top up the ATF level and wait to...
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    4hp 4-stroke or 5hp 2-stroke kicker?

    My new boat, 20 feet, 80hp 4-stroke Yam, 2600 lbs, came with a 4-stroke 4hp Yamaha kicker. My old boat which I am about to sell, 17ft fisher with 40hp 4-stroke Yamaha, has a 5hp 2-stroke mariner kicker. Both kicker engines have been little used are about the same age, 1998 and are running well...
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    F75 Flushing -tell tale flow very weak!

    I have a F80 (Same as the US F75/F90 I think!) on my new boat. The engine is year 2000 and has been used in salt water. When I connected the hose up to my F40 on my old boat the water came out of the tell tale under pressure, basically as fast as the hose was turned on. On the F75 engine...
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