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YS61-S Needle Valve Settings

Old 03-14-2006, 01:38 PM
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MHawker
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Default YS61-S Needle Valve Settings

Hi Dave,

I didn't see this information in my search, and didn't see this engine on the YS website, so I'll ask here.

I have a YS61-S in a Freya helicopter. I bought this used a few years ago and haven't touched it until a couple weeks ago. It had been running before I bought it and I have no reason to think anything has changed on it. I have started it and it seems to run good (but loud), but I would like to know the needle settings so I can make sure I'm at good starting point.

I don't know if it's a I or II but it has two needle valves on one side, if that helps.

Also, I noticed fuel leaking a bit from (I think) behind the carb when I was trying prime the engine. I haven't run it long enough to see if it leaks all the time, but I wanted to run it by you. Could it be a seal that has dried up from sitting so long.

Thanks.
Old 03-15-2006, 04:45 AM
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fifialfa
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Default RE: YS61-S Needle Valve Settings

The big needle is for hovering usually open for 1 1/4, and small one for Forward moving, open for 1 1/4
Old 03-16-2006, 11:38 AM
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Dave Shadel
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Default RE: YS61-S Needle Valve Settings

Do it have a needle in the center of the carb barrel, or just two larger exposed needles?
Old 03-16-2006, 03:18 PM
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MHawker
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Default RE: YS61-S Needle Valve Settings

Thanks for the reply, Dave. It has a screw in the middle of the carb barrel as well as the two larger NV's.
Old 03-16-2006, 08:29 PM
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Dave Shadel
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Default RE: YS61-S Needle Valve Settings

Go to www.ysperformance.com You can find an online manual there.
Old 03-16-2006, 11:47 PM
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Default RE: YS61-S Needle Valve Settings

Hmmm. Sorry, Dave. I guess I didn't look as hard as I thought I did on the website and totally missed that.... not sure how since it was SO easy to find this time.

Thanks for the assist.
Old 03-17-2006, 10:48 AM
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Default RE: YS61-S Needle Valve Settings

Good Flying!

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