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post #11 of 22 Old 04-07-2013
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Re: Repair 4 hp two stroke ?

Y'know, somebody needs to write a "Outboards for the Compleat Idiot"type manual. Those of you who have spent any serous time wrenching on VWs knows what i am talking about;
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It's 5 o'clock somewhere:


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post #12 of 22 Old 04-07-2013 Thread Starter
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Re: Repair 4 hp two stroke ?

The 4R77B makes it a 1977 ? The compression was 60 lbs The exciter coil must be good. It is what lights up the test light at the connection plug. I am not sure about a ground kill it must work from a point at the throttle. Thanks again, Lou
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post #13 of 22 Old 04-08-2013
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Re: Repair 4 hp two stroke ?

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Originally Posted by Lou452 View Post
The 4R77B makes it a 1977 ? The compression was 60 lbs The exciter coil must be good. It is what lights up the test light at the connection plug. I am not sure about a ground kill it must work from a point at the throttle. Thanks again, Lou
60lbs? Not sure what the spec is? but it sounds a little low? Maybe squirt a little light oil in the plug hole and try it again? I think you said you were getting a weak spark from each plug? If all the wiring reads good with an ohm meter you may have bad ignition coils, but that may be a stretch?

Let us know what you find.

Paul T
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post #14 of 22 Old 04-15-2013 Thread Starter
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Re: Repair 4 hp two stroke ?

Easy come easy go. They want it back. I have it running in a 55 gal drum sounds good one pull to start it.
I pulled the coils out and checked the coils with a ohm meter. I found some info on this Iboat forum that gave values for the primary 1-2 ohms and secondary 6-8 ohms This engine showed 12 ohms on the secondary? As I said me and wires do not mix. I have know idea what I am doing.
I checked the spark when I put the coils back and it was a little bit better but not a bright blue but a strong yellow and shooting of the plug sides. I cleaned the plugs up this helped the "fire" still not blue.
I checked the compression once more both holes plugs out 60 lbs One of you said to do this It seemed to help the sound.
I noticed the mix Lean rich dials not balanced so I set them to the middle.
Pulled the rope a few times and the pay off came on pull 5-7
Now it will start in one if it is warm.
Lake test Sat I think
The motor has been recalled so it seems. Not a loss to me as it came to me for free. I now have a little bit of an idea what is going on and how to work on one. That's a plus
I wish to thank all of you that gave me an ear and some help Kind Regards, Lou
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post #15 of 22 Old 04-16-2013
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Re: Repair 4 hp two stroke ?

Quote:
Originally Posted by Lou452 View Post
Easy come easy go. They want it back. I have it running in a 55 gal drum sounds good one pull to start it.
I pulled the coils out and checked the coils with a ohm meter. I found some info on this Iboat forum that gave values for the primary 1-2 ohms and secondary 6-8 ohms This engine showed 12 ohms on the secondary? As I said me and wires do not mix. I have know idea what I am doing.
I checked the spark when I put the coils back and it was a little bit better but not a bright blue but a strong yellow and shooting of the plug sides. I cleaned the plugs up this helped the "fire" still not blue.
I checked the compression once more both holes plugs out 60 lbs One of you said to do this It seemed to help the sound.
I noticed the mix Lean rich dials not balanced so I set them to the middle.
Pulled the rope a few times and the pay off came on pull 5-7
Now it will start in one if it is warm.
Lake test Sat I think
The motor has been recalled so it seems. Not a loss to me as it came to me for free. I now have a little bit of an idea what is going on and how to work on one. That's a plus
I wish to thank all of you that gave me an ear and some help Kind Regards, Lou
Now that you are a little more familiar with 2 strokes, perhaps you could find a good used one on Craigslist or equivalent?

Paul T
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post #16 of 22 Old 04-17-2013
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Re: Repair 4 hp two stroke ?

For future reference: Did you check for rust on the magnets on the inside of the flywheel? If they have a coating of rust on them it will impair the spark. Sitting around for a while can cause this. A cleaning with some emery cloth can perform wonders on these little 2 strokes.

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post #17 of 22 Old 04-17-2013 Thread Starter
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Re: Repair 4 hp two stroke ?

I did not remove the fly wheel as I felt like the spark from the under the fly wheel was good. I had unplugged some wires going to the coil packs that came from under the fly wheel. At that point I used a test light and it would flash bright and full with each pull. Even a slow gentle pull.
I think the removing the coils and putting them back on and cleaning the plugs that did not seem fouled made it better. The coils might not have been getting a good ground ? They are still over the Ohm range of 6-8 ohms that I found on the other boating forum. These coils both showed 12 ohms. A real electrician, not me checked 12 ohms. I can use an ohm meter like a novice. Understanding values not really.. 12 is half again 8 and 8 is 3/4 of 12 Seems like 12 ohms is way to high ? I put the coils back on and the spark was better.
Oil down the plug holes did nothing for the spark but it is a fine line that makes an engine go. Once she hit she got much better. She was a sleepy puppy. Now she is ready to play.
I have had some 2 stroke dirt bikes and 4 stroke I have no battle as to what is the best they both have a + and a -
Electronics are a mystery to me. I tip my hat to the ones that have skill. They get a good laugh at me but always help me to find the trouble. I try and I just stay at it long enough that I find the fault by will power.
It was my first outboard engine fix. I grew up on lake Erie and the inboard or inboard/ outboard is more my limited fixer upper
I wish I did not have to give it back but like I said learning about it was great reward.
Regards, Lou
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post #18 of 22 Old 04-17-2013 Thread Starter
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Re: Repair 4 hp two stroke ?

[QUOTE=dabnis;1017160]Now that you are a little more familiar with 2 strokes, perhaps you could find a good used one on Craigslist or equivalent?

This part of KY. is not a hot spot for boats. I might find one but the odds are not good. I am blessed to have sailnet mates to help me. Regards, Lou
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post #19 of 22 Old 04-18-2013
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Re: Repair 4 hp two stroke ?

I was pretty sure that I was making a mistake when I bought a 20 year old 2-stroke Nissan 9.9 with almost no hours on it. I really wanted a new 4-stroke.
I was wrong. I am one of few around here who's engine always starts on the first pull. I am one of few who can both plane the dinghy with 3 people in it and be able to carry the outboard around by myself.
My only mistake was doubting my decision.


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post #20 of 22 Old 04-18-2013
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Re: Repair 4 hp two stroke ?

Quote:
Originally Posted by sww914 View Post
I was pretty sure that I was making a mistake when I bought a 20 year old 2-stroke Nissan 9.9 with almost no hours on it. I really wanted a new 4-stroke.
I was wrong. I am one of few around here who's engine always starts on the first pull. I am one of few who can both plane the dinghy with 3 people in it and be able to carry the outboard around by myself.
My only mistake was doubting my decision.
I recently bought a new 6HP 4 stroke Tohatsu for my fishing boat. The reason I bought a 4 stroke is that carburettor equipped 2 strokes are not allowed on Lake Tahoe. Some time back a bill was introduced to ban 2 strokes on any body of water that eventually ended up in a water supply. The bill was defeated, but not by much, IIRC. I wouldn't be a bit surprised to see that bill re-introduced again.

I have had many 2 strokes and would have bought a new one except for the above.

Paul T
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