09 Yamaha 225 HPDI Ratcheting Noise - Bad Help

[tzx200]

Hey all, wondering if you can help me,? I have a Yamaha 225 HPDI series 2 2009 with 2013 Powerhead. It makes a clanking noise from the lower unit, only when in gear , both forward and reverse, It goes away with any throttle applied, I have seen on you tube and searchs that it may be normal,?, Just changed Oil and it was clean as it can be with a tiny bit metal particles & prop is tight 25 T1 (1 Piece Brass Thrust Washer) . My 05 200 HPDI never did this and I just bough this boat 1.5 months ago and its been out 3 times.

Idles @ 500 RPM and is smooth but in gear it rattles / ratchets badly until over 700 RPM then goes away...

[1Holeshot]

I had a 2014 Suzuki 90 hp 4 stroke that did this up to about 1200 rpms.

Dealer said it was normal and I never experienced any problems in the 3 years I owned this engine.

Most likely the prop hub causing it.

[Brianmoore25]

Sounds like prop ratchet. Normal for these engines.

[tzx200]

My 05 never did this...prop is good as well as thrust washer and oil.

[Brianmoore25]

Can't remember the spec for in gear idle rpm. If it is idling at too low of a rpm it will ratchet lots worse. Bigger diameter props also make it worse.

[tzx200]

yes the idle is very low around 5K at idle and in gear. I need to find out how to adjust this.

[Brianmoore25]

Probably due for a full sync and link which should get idle rpm back to spec.

[tzx200]

ill have to call my dealer on that

[RdRngR]

"5K at idle and in gear" ????

[tzx200]

Sorry 500 RPM on the Yamaha monitor that’s idle and in gear

[Dug71]

Mine only does this with the 25T1 prop. doesn't do it with my turbo prop. something to do with how they are made i guess.