700 MM jetting 3000-5000 ft?

[abranz]

Hello, I'm new here and just purchased a 01 700mm. It's stock other than the previous owner jetting the carbs with 140 pto, 138's on the middle and mag side. 55 pilots with their screws 1 5/8 out.
Is this correct jetting for 3000-5000ft? It runs well but sputters and seems rich during 1/3 throttle or less. It has stock exhaust. Thanks, Anthony.

 

[snowdad4]

Straight out of the book, but you didnt mention the needle setting. That could be your sputter. Yamaha says position #2 for the clip. Yamaha does error on he side of rich and if you have tuning parts on hand you could actually go a bit smaller on the mains, I did before pipes.

 

[abranz]

Straight out of the book, but you didnt mention the needle setting. That could be your sputter. Yamaha says position #2 for the clip. Yamaha does error on he side of rich and if you have tuning parts on hand you could actually go a bit smaller on the mains, I did before pipes.

Is that position #2 from top or bottom of the needle? Thank you, appreciate the help

 

[snowdad4]

From the top. You also need to be correct on the shim orientation. If you cruise through the tech section you should find info as to setting the needle.

 

[abranz]

Thanks

 

[abranz]

Would changing the pilot jets to 50 from 55 help the low to mid range? The needle clips are on position 3 from top with a shim on each side of the clip. Are the pilots for idle or low throttle or both? Thanks