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Yamaha 130 Beto  Rate Topic 
 
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 Posted: Sat Jul 10th, 2021 08:26 pm
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Stingray
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Joined: Thu Jan 31st, 2008
Location: Port Elizabeth, South Africa
Posts: 71
Equipment: Custom build t53, Saltist 50, Double X .52 ,
Best Catch: Raggy 180kg,Diamand 40kg,Grunter 5kg,Cob 5kg
Favorite Fishing Spot: Swartkops River ( Port Elizabeth )
Boat: Baronet White Water Yamaha 130
Club: Rod Club
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Hello All

Can anyone please help me with the correct air screw adjustments. The older service manual states 7/8 turns out.
The manual I have is for the pre 2008 models with carb model starting 6L 103 and mine is the 6L 105.

I had a problem where my motor did not want to idle after running perfect for a couple of years. I removed the carbs and cleaned them. Ran perfect after I took it out for a test run. Air screws were adjusted as it was previously set at a Yamaha dealership.

When I inspected my spark plugs I noticed that 3 cylinders were running a bit rich and the 1 looked perfect. I also noticed that the 1 cylinder that looked perfect that the air screw was turned out less than the other 3 cylinders. Correct me if I am wrong, if you turn the air screw out ( anti clockwise ) do you make the mix more rich and by turning in ( clockwise ) you lean the mix.

Motor detail = 2008 Yamaha Beto (6n78)

Thanks and regards Ray.

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