[C320-list] Max RPM on Yanmar YM30

[Crosby Roper]

Hi All,
 
I have hull # 1054  a Yanmar YM30 On our way down the coast from Oceanside to San Diego, I ran the engine at high RPM's for a few minutes. The engine has about 200 hrs on it and is well maintained. We have a 3-blade fixed prop, original factory version. All was well until we ran the RPM's up to 3200 and got brown smoke from the exhaust. We typically run the engine at 2500-2700 RPM. Does anyone know the max RPM for this engine? (I know it's in the manual orlando, but the manual is on the boat and I'm not :)) Was the brown smoke a sign of engine overload? Any cause for concern? Thanks for your help.Crosby Roper, VMD
Hull # 1054 Tethys
San Diego, CA
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