If you are refering to the 11111-882xx head serial number, it is embossed(?) on the front end/face of the head, just more to the exhaust side. Just above and to the left of the timing cover-plate at the motor from the front.
It is in fairly large numbers so it should be fairly easy to find on even the grubbiest of yamaha heads.
It is also in the same spot as the yamaha logo but on the exhaust side, not intake.
Wed, 02 April 2003 13:38
