How to tune 6 carbs after rebuild? '95 OceanRunner 225.

[btravlin2]

I've looked at the FAQS, which only covers older motors. My manual says that adjustment must take place with motor in gear and boat "unrestrained", as in underway. So am I supposed to go around in circles out in the bay?

The manual also says to find the sweet spot between lean and rich, carb by carb. When working with one carb, or even two, this is easy, but with the interaction of 6, this seems challenging.

Any tips on best methods?.......

 

[boobie]

Re: How to tune 6 carbs after rebuild? '95 OceanRunner 225.

Yes , circle in the bay and adjust the carbs for the "sweet spot". You may have to do it two or three times.

 

[Chris1956]

Re: How to tune 6 carbs after rebuild? '95 OceanRunner 225.

Make sure you start with the correct initial setting. It is likely NOT 1-1/2 turns open

 

[btravlin2]

Re: How to tune 6 carbs after rebuild? '95 OceanRunner 225.

My OMC manual says 2-1/2 turns to start. I was going to take notes on how many turns the existing setting is as I remove/replace the needle. That should be a reasonable place to start.

 

[Chris1956]

Re: How to tune 6 carbs after rebuild? '95 OceanRunner 225.

Well, the spec for most of the '98 Johnny 150/HPV6 models is 5 turns open and the spec for a '98 Johnny 150JLE is 4 turns open. My advice is to get the exact spec for your model.

 

[boobie]

Re: How to tune 6 carbs after rebuild? '95 OceanRunner 225.

The spec for a '98 225 is 5 turns.

 

[btravlin2]

Re: How to tune 6 carbs after rebuild? '95 OceanRunner 225.

Good thing I checked back before rebuilding and tuning. First thing I need to do is verify I have the correct manual, because my manual clearly says 2-1/2 turns is the initial starting point after re-assembly......for the slow speed needle.

It states on the cover "Service Manual" for 125, 130, 200, 225, 250, and 300, 1994 OMC All rights reserved. And inside, my model number (J225TXEO) is listed as "serviced by this manual". But the motor graphics are for Venom and Vindicator.

I can't find any info on the web. Can anyone nail this down?

 

[boobie]

Re: How to tune 6 carbs after rebuild? '95 OceanRunner 225.

I always used to set them at 4-5 turns and then when I got on the water I'd use my "Ears" to find the best setting when adjusting.