Service mariner 1989 60hp outboard

[lucianv]

Hi all again,

Since I got some time, I take out the motor of the boat and build a stative for it in order to start working on it inside of a garage.
This is about this motor -

Mariner 60hp motor identify help

Hi all, I just bought my first boat and my first engine :) Being a pretty old one I would like to make a little bit deeper maintenance to it in order to not have surprises on the water, so first I need some help to identify my motor or to identify compatible spare parts serial numbers. On the...

forums.iboats.com

And managed to buy this manual for it



Even so, I have some questions and also want to share my experience, maybe can be usefully to others.

1 - I take again (4th time since I bough it ) compression for all 3 cylinders and after I saw that it looks good I decided to go further and do a kind of restoration / maintenance / service job on it.

cyl1 -

cyl2 -

cyl3 -

2 - When I started last time and let it run for about few minutes into a barrel with water I noticed that I have some leaks in this area (seems to be water)



So of course I take out the side panels in order to replace gaskets and also I hoped to find here the thermostat as well, but there I got a surprise by didn t found the thermostat neither the pop valve. Probably previous owner run without it ?
Is my assumption correct in this picture?



Also these are more pictures of this side



3 - During take out the plate from the carbs I noticed this hose which didn t had anything connected to it. Can this be from the oil mixer ? Can I remove it at all? Or is something else?



4 - Before start working on the motor, in order to be prepared for the last part of tuning I bought a stroboscope for set the timing and also a set of vacuum gauges for sync carbs, but when I removed the carbs, I don t see any vacuum port ..
Do anyone know where the vacuum ports are for this motor?



Thanks a lot to all, and probably there will be more questions during my process of restore this engine...

 

[racerone]

There are no vacuum ports on this 2 stroke motor.

 

[lucianv]

There are no vacuum ports on this 2 stroke motor.

And how should this be sync ? Beside that I also saw in manual says nothing about vacuum ports....
Thanks

 

[racerone]

Throttle plates are CLOSED at idle.------Your manual will explain synchronizing of throttle opening and ignition advance.----Read it and understand it before making any adjustments !

 

[lucianv]

Throttle plates are CLOSED at idle.------Your manual will explain synchronizing of throttle opening and ignition advance.----Read it and understand it before making any adjustments !

Thank you,
I have few more steps till then

 

[merc850]

If you're going to be turning it over at starting speed to check things put the spark plugs in their boots and ground them to the block - I used a piece of solid copper wire. While the exhaust plate is off you could spray some engine cleaner into the cylinders, the pistons look like they have varnish build-up. Power Tune is a good choice.
Is there a timing decal on the flywheel?

 

[lucianv]

If you're going to be turning it over at starting speed to check things put the spark plugs in their boots and ground them to the block - I used a piece of solid copper wire. While the exhaust plate is off you could spray some engine cleaner into the cylinders, the pistons look like they have varnish build-up. Power Tune is a good choice.
Is there a timing decal on the flywheel?

My technical english maybe is not so good, so I will try to rephrase in order to be sure I understood correctly what you tell me:
Basically you say to crank the motor and put cleaner in cylinders ?

Yes there is timing on the flywheel, I need to check that TDC is on right place (to be sure that if it was removed, it was put back correct )

Thanks a lot for help

 

[racerone]

Flywheel only fits one way.----Timing does not change by removing and putting the flywheel back on.

 

[merc850]

Flywheel only fits one way.----Timing does not change by removing and putting the flywheel back on.

Somebody might have undone the bolts instead of using a puller.

 

[merc850]

My technical english maybe is not so good, so I will try to rephrase in order to be sure I understood correctly what you tell me:
Basically you say to crank the motor and put cleaner in cylinders ?

Yes there is timing on the flywheel, I need to check that TDC is on right place (to be sure that if it was removed, it was put back correct )

Thanks a lot for help

I'm saying that if you are going to turn the motor with the starter ground the plugs to the block.
You can clean the pistons one at a time - when the rings are visible in the exhaust ports, just turn the flywheel.

 

[racerone]

Agreed----There are many , many folks who do not know how to remove a Mercury flywheel !!

 

[merc850]

"3 - During take out the plate from the carbs I noticed this hose which didn't had anything connected to it."
I believe that it is part of the oil/crankcase bleed system, clean the screen and put it back into that hole.
If you are going to run it as a constant use motor replace the thermostat and poppet valve and any other original parts.

 

[lucianv]

Flywheel only fits one way.----Timing does not change by removing and putting the flywheel back on.

Somebody might have undone the bolts instead of using a puller.

Yeah, This is what i did actually because I wanted to see the stator. I tried with a puller but seems that didn t moved at all and was afraid to try harder. Anyway I will try to get TDC on the mark soon.

I'm saying that if you are going to turn the motor with the starter ground the plugs to the block.
You can clean the pistons one at a time - when the rings are visible in the exhaust ports, just turn the flywheel.

Ok, now its clear. I will clean them in this step by turning flywheel by hand (all other parts are not on the motor now ...I check them, clean them etc)

Thanks for the tip.

"3 - During take out the plate from the carbs I noticed this hose which didn't had anything connected to it."
I believe that it is part of the oil/crankcase bleed system, clean the screen and put it back into that hole.
If you are going to run it as a constant use motor replace the thermostat and poppet valve and any other original parts.

I am not using the oil mixer, I use directly mixed gasoline so that s why I asked if I just can give up to that hose

As you see in my picture seems this motor hasn t any thermostat or pop valve on it. I guess this is the place where they should be



Is that correct ?

 

[Faztbullet]

Depending on serial number most of those do not have t-stat or poppet, also get a factory manual.

 

[lucianv]

Depending on serial number most of those do not have t-stat or poppet, also get a factory manual.

Serial is - C188478
But even so, is wrong if I put thermostat and the popet valve even if it hasn t ?

Also do you have any idea what should be fitted in that empty space from the picture ?



Thanks

 

[Faztbullet]

You dont not want a t-stat, these engines have enough problem's with cooling.

 

[lucianv]

You dont not want a t-stat, these engines have enough problem's with cooling.

So you suggest to not install thermostat and pop valve on it?

 

[Faztbullet]

No as that year is not designed for one...

 

[lucianv]

But why is the placeholder there ?
Is wrong if I buy a thermostat and pop valve? I haven t had any 2 stroke (actually any outboard) till now, but I know on the car is very important the thermostat in order to keep the engine to a proper temp (not too cold I mean)

 

[Faztbullet]

That block design has been used for years.....your year model does not use a t-stat or poppet. Clean up the plates and reinstall with new gaskets and get it wet.