[C320-list] Throttle issue

[Utility Email]

Is the propellor clean?  I would magi g you could have significantly reduced RPM with a fouled propellor or even a barnacle encrusted propellor.  

David B. Swanson, P.E., S.E.
Principal, LEED AP, F. SEI
Director, Structural Engineering

Reid Middleton, Inc.
(425) 741-3800 office
(425) 741-5011 direct
(425) 508-7971 mobile

www.reidmiddleton.com

Washington | California | Hawaii | Alaska


> On Jul 4, 2017, at 12:38 PM, Jbrown5093 <jbrown5093 at gmail.com> wrote:
> 
> Fouled prop (growth, etc.).
> Jim Brown. 973
> 
> Sent from my iPad
> 
>> On Jul 3, 2017, at 5:43 PM, Onat Dogruer <onat_s at yahoo.com> wrote:
>> 
>> Hello all,
>> We have the Yanmar 3GM30F(EU) on our 1998 and this weekend I noticed a problem with throttle. There is no RPM pick up once I pass 2200 and then when I push the trottle all the way, it only pushes out 2860 rpm. I first thought the cable was slipping so I checked both the helm arm and on governor arm side connections. It looks normal. I then tried it in neutral and noticed that I can get full 3660 rpm on neutral (checked with a laser tachometer) Went out for a short cruise and again noticed that I can't get more than 2800 in Forward. 
>> Also fuel looks clean. I am going to change the fuel filter regardless. The issue seem to be only when we are on forward which doesn't make any sense.
>> What am I missing here? Any thoughts?
>> 
>> 
>> Sent from my T-Mobile 4G LTE Device