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yamaha 130 TLRS carb adjustment

Old 02-12-2020, 09:52 AM
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Default yamaha 130 TLRS carb adjustment

6L1 L 307065

This is my friends yamaha 93 or 94. i helped him clean the carb. he wanted to adjust it. He looked up info, but we had it wrong. Now gas floods out of breather. I would like to know proper procedures and measurement to adjust these carbs.


one last point, one thing i dont understand or like, when we fire up and get going the gas empties out of filter and never catches back up. dip tube on tank, water knock out and inline filter all replaced. gas tank diptube was cleaned.

So, I know this is our fault. he had looked up float height. with carb upside down i measured front of float to carb body. It was at 19 mm, we adjusted it to 16 mm. Obviously wrong. I would like to know correct measurement and procedure, i.e. where to measure from.

thanks in advance for any and all help.
Old 02-12-2020, 10:08 AM
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One of the floats and/or needles is tweeked and hanging up.
no big deal, just pull the air cover and see which carb floods.
Remove, readjust and carry on.
Old 02-12-2020, 10:27 AM
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Originally Posted by PeteH View Post
One of the floats and/or needles is tweeked and hanging up.
no big deal, just pull the air cover and see which carb floods.
Remove, readjust and carry on.
They are all flooding. i think we adjusted them too far. i can go back to where they were, i was just wondering if someone had the correct measurement. i dont have the book
Old 02-12-2020, 01:19 PM
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The procedures are stated in the applicable service manual.
Old 02-12-2020, 01:19 PM
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Originally Posted by Nws024 View Post
They are all flooding. i think we adjusted them too far. i can go back to where they were, i was just wondering if someone had the correct measurement. i dont have the book
Why not?
Old 02-12-2020, 01:21 PM
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Originally Posted by Nws024 View Post
6L1 L 307065

This is my friends yamaha 93 or 94. i helped him clean the carb. he wanted to adjust it. He looked up info, but we had it wrong. Now gas floods out of breather. I would like to know proper procedures and measurement to adjust these carbs.


one last point, one thing i dont understand or like, when we fire up and get going the gas empties out of filter and never catches back up. dip tube on tank, water knock out and inline filter all replaced. gas tank diptube was cleaned.

So, I know this is our fault. he had looked up float height. with carb upside down i measured front of float to carb body. It was at 19 mm, we adjusted it to 16 mm. Obviously wrong. I would like to know correct measurement and procedure, i.e. where to measure from.

thanks in advance for any and all help.
Are you talking about the engine mounted fuel filter having an air space in the top of it?
Old 02-13-2020, 09:24 AM
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I know about the air bubble, this one completely empties. Alloyboy, i would like to thank you for taking time out of your day to tell me the information is in the service manual, which i dont own. I guess I will need to order the manual. Again, thanks for the insight and knowledge.
Old 02-13-2020, 09:37 AM
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There are two tabs on the floats. One drives the needle and the other restrict overall travel.

If both carbs are flooding all four venturi's you definitely screwed up the float adjustment.

With the carb turned upside down the float should rest fairly parallel with carb body.
Old 02-13-2020, 09:42 AM
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Originally Posted by PeteH View Post
There are two tabs on the floats. One drives the needle and the other restrict overall travel.

If both carbs are flooding all four venturi's you definitely screwed up the float adjustment.

With the carb turned upside down the float should rest fairly parallel with carb body.
Thankyou, I bent the tab for the float. i can try to put it back like it was, my goal is to not rinse and repeat too many times.

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