Patent Number: 6,637,401

Title: Valve drive mechanism for outboard motor

Abstract: An engine has a crankshaft. The crankshaft has a set of steps formed at one end. A drive pulley for a cam drive arrangement is positioned on one of the steps. A set of holes are formed in the end of the crankshaft adjacent to the steps. The holes has axes that are substantially parallel with a rotational axis of the crankshaft. Threaded fasteners that screw into the holes couple the crankshaft and the drive pulley. An alignment pin also extends between the drive pulley and the crankshaft. A position sensor component such as a washer is interposed between the crankshaft and the drive pulley.

Inventors: Nozue; Toshihiro (Hamamatsu, JP)

Assignee: Yamaha Marine Kabushiki Kaisha

International Classification: F01L 1/02 (20060101); F02B 75/00 (20060101); F02B 75/22 (20060101); F01L 1/053 (20060101); F01L 1/04 (20060101); F02B 61/00 (20060101); F02B 61/04 (20060101); F02B 75/18 (20060101); F01L 001/02 ()

Expiration Date: 10/28/2020