2004
Yamaha 1981 YZ465H Engine
the motor 2x8-000880 is a 1979 IT 400 Yamaha
400 cc Yamaha engine
On the Yamaha outboard, the model number is located on the port, (left), transom mounting bracket. The transom bracket is the part of the engine that is bolted to your boat transom.
Motor oil
it is 1993
m509e032932
g103e-00428
should be on a tag on the flywheel end of motor
According to the Yamaha guide, the outbound serial number is located on the label in the clamp bracket. The serial number is helpful when replacing your motor.
I HAVE A OUTBOARD C150ztXRU
I HAVE A YAMAHA FX HO AND THE ENGINE NUMBER IS STAMPED ON THE RIGHT HAND SIDE OF THE BLOCK AS IF YOU WERE RIDING IT. IT IS LOCATED RIGHT DOWN LOW UNDER THE EXHAUST WHICH MAKE FINDING THE NUMBER VERY TRICKY U MAY BE ABLE TO READ IT WITH A MIRROR SET UP I ONLY KNOW THIS AS I PULLED MY MOTOR OUT FOR REBUILD AND SPOTTED THE NUMBERS