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off-the-grid · 31-08-2010, 07:31

At second glance, it is spinning. I guess just not fast enough to move the boat, thanks to the awesomely low rpm.

How about a shiny new hard bottom dink and a good pair of oars instead? Can you even get a new 2 stroke anywhere?

PamlicoTraveler · 31-08-2010, 07:35

Quote:

Originally Posted by Ex-Calif

If the engine is running at "high" rpm and the boat is not moving then number 1 suspect is the prop shear pin if installed or whatever keys the prop to the shaft.

I was thinking the same thing - shear pin. That my be one of your problems. Use a small nail or bolt of you don't have another. Just dont hit ground.

Try to keep the two stroke....remember how light they are. I have a Tohatsu 3(?) hp. I can carry it around with one hand.

**Ex-Calif** · 31-08-2010, 07:36

Grunzster - Don't be fooled - with a sheared pin/cone the prop will still spin. Also the rpm may appear to fluctuate up and down with steady throttle as the prop loads and unloads.

shipofools · 31-08-2010, 07:59

Quote:

Originally Posted by grunzster

How about a shiny new hard bottom dink and a good pair of oars instead? Can you even get a new 2 stroke anywhere?

Most places outside of EU or USA you can still get small 2 strokes.

off-the-grid · 31-08-2010, 08:14

Disclaimer: only semi mechanically inclined newb. Guess I should have said that up front.

Neoprene type rubber material on the shaft is torn, falling apart, deteriorated. I'm assuming that's the hub referred to earlier?

Anyway to band aid it to at least get me to shore? Or am I pretty much stuck pulling the hook and moving to a slip until I can find the part?

**Ex-Calif** · 31-08-2010, 08:21

Buy 2 keep a spare.

I don't know if and how I would jury rig that without having hands on the engine.

Maybe someone has had the direct experience.

I presume you still have the carb problem and low RPM.

off-the-grid · 31-08-2010, 08:25

Definitely plan on getting 2!

Last time I ran it, still seemed very low. Had to put it on the davits to get to the prop.

dlockhart · 31-08-2010, 09:10

Older engines had the pleasure of running gas before it was mixed with ethanol and over a few years, if never cleaned out, developed a thin layer of varnish on the surfaces. When ethanol is introduced to this environment and sits in the fuel bowl for awhile, it loosens this varnish and it floats about in there and gets lodged into the idle - air and mid - range passages. Carb cleaner should have cleaned this out. If the throttle remains at idle position but high rpm's occur, in for this to happen the engine has to be getting air somewhere other than is normally introduced through the throttle body (venturi) in the idle position.
I don't know if the motor has reeds or not but in pwc's, if you try to start them after flooding the engine with water in a roll over, the hydraulic action punches the reeds through the reed cage backwards and causes similar conditions.
Hope this helps......

off-the-grid · 31-08-2010, 12:56

dlockhart - The carb cleaner did solve the high rpm problem. Now I have a low rpm problem, though.

off-the-grid · 31-08-2010, 13:07

Quote:

Originally Posted by shipofools

Most places outside of EU or USA you can still get small 2 strokes.

Figures

That would explain why I'm finding nothing.

Minggat · 31-08-2010, 13:20

Quote:

Originally Posted by grunzster

Maybe time for a shiny new 4 stroke?

It seems you're ready to throw money at the problem due to your frustration. But you're willing to throw a whole bunch at a new motor rather than have the old one professionaly looked at for cheap. If you take it in and are convinced it no good, the shop may have the shiney new one you want for a good price (and maybe put your repair charges towards that price).

A trip to a repair shop would be cheaper, educate you on the problem, and would not be trading one set of problem for another set.

off-the-grid · 31-08-2010, 14:10

Quote:

Originally Posted by Minggat

But you're willing to throw a whole bunch at a new motor rather than have the old one professionaly looked at for cheap.

But I thought that was the big selling point of outboards? They're cheap enough that when they get old and problematic, you just dump it overboard and buy a new one.

Quote:

Originally Posted by Minggat

A trip to a repair shop would be cheaper, educate you on the problem, and would not be trading one set of problem for another set.

Very good point, and I have though about that.

I really am throwing around the idea of a hard dinghy that I can actually row, if I run into problems, though. And the 5 HP seems to be too much for a lot of them. I also have a Honda connection, so may be able to get the 2HP for cheap!

Still trying to decide. But for now, I'm just going to let more chain out, throw on the bridle, and sit put for a few days.

Minggat · 31-08-2010, 14:30

Quote:

Originally Posted by grunzster

I really am throwing around the idea of a hard dinghy that I can actually row, ...

Still trying to decide. But for now, I'm just going to let more chain out, throw on the bridle, and sit put for a few days.

Yes, I know. I'm responding on that thread as well (...downgrading).

Good idea. Sleep on it for a while.

BTW. My 8 hp is an '80's something. Your 5 hp is not so old. It's not intended to be a consumable.

rover88 · 31-08-2010, 15:07

Don't give up on that old two-stroke just yet. Most probably you have both a carb problem and sounds like a prop problem. You should be able to find a rebuild kit for the carb and most props are under $100 USD.

As for cleaning the jets in the carb you may be able to find these tiny wire like files at an auro parts store. Carb cleaner and acetone will not sufficiently penetrate the tiny openings.