Super Jet OEM dual 38 Mikuni Carb tuning question

[227]

Couple of tuning questions for you gurus;

1. On the OEM dual 38 carbs on a RN Super jet, Which screw is which? Are the adjustments screws facing towards the front of the ski for high speed adjustment or low?

2. What is the best tuning order of operations? ex; dial in low speed first then high or visa versa?

 

[ajmps1]

hate to be a smart ass but read the mikuni manuel then read it again and again and again then when it starts to make sense read it again and good luck

 

[rubbertoe]

227 ,check out this helpful thread in the search bar ."Carb Tuning 101 / Info From WATCON" or "carb database" for good start point info.also lows face toward rear of boat .highs face forward

 

[Byeai]

right is close left is open

Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

 

[Tyrant1919]

Mikuni manual is actually pretty good.

227, why are you asking us this question? Have a set out of tune?

 

[BruceSki]

pull the jet side covers off and look at the tuning screws. That will tell ya which screw is the adjustment for which jet.

 

[gc4]

There is a great write-up on tuning in the tech faq section: http://www.x-h2o.com/threads/39846-Tuning-tips-for-Rookies

 

[227]

I'm actually fairly knowledgable with overall ski problems, however I always send my Carbs to Art at Jet works, so carb tuning is my weakest area. I don't even have a Mikuni manuel to refer to. I just got my ski back from Art, He rebuilt my carbs, but he doesn't have a tuning tank in his new shop so its not quite dialed in. When I looked at the carbs to fine tune them I realized That I didn't even know which screw was high or low, I would have called Art but the day I got my ski back from him he had to go in for some sort of medical proceedure so I didn't want to bother him, so I'm asking the X.. Thanks for the links, thats what I really wanted, I'll read them to get up to speed on tuning.

 

[MattSmith]

John should we go to the harbor tomorrow and plan on riding but if it doesn't look big enough to ride just tune the skis?

 

[JetManiac]

Couple of tuning questions for you gurus;

1. On the OEM dual 38 carbs on a RN Super jet, Which screw is which? Are the adjustments screws facing towards the front of the ski for high speed adjustment or low?

Lower adjuster on the carb is low speed and higher adjuster is high speed

2. What is the best tuning order of operations? ex; dial in low speed first then high or visa versa?

Tune low speed first.

 

[MattSmith]

Couple of tuning questions for you gurus;

1. On the OEM dual 38 carbs on a RN Super jet, Which screw is which? Are the adjustments screws facing towards the front of the ski for high speed adjustment or low?

Lower adjuster on the carb is low speed and higher adjuster is high speed


2. What is the best tuning order of operations? ex; dial in low speed first then high or visa versa?

Tune low speed first.

now that is an answer!! thanks!