Yamaha F150A Service Manual

Also see for F150A: Rigging guide Service manual Owner's manual Owner's manual Owner's manual

7-18Timing beltInstalling the timing beltWhen the timing belt is not installed, donot turn the crankshaft or driven sprocket.Otherwise, the pistons and valves couldcollide with each other and be damaged.1. Check that the mark “a” in the drivesprocket and the protrusion “b” on thecylinder block are aligned. Check that the“I” marks “c” and “d” on the drivensprockets are aligned.2. Install a new timing belt with its part num-ber in the proper orientation, from thedrive sprocket side to the port and star-board driven sprockets, in the counter-clockwise direction.Do not apply grease or oil to the timingbelt.3. Adjust the timing belt to the specifiedinstallation height “a”.4. Turn the timing belt tensioner graduallyclockwise using a hexagon wrench, andthen remove the pin “1”.TIP:When turning the timing belt tensioner, applya force of 15 N·m (1.5 kgf·m, 11.1 ft·lb) orless.Drive sprocket bolt “4”:7 N·m (0.7 kgf·m, 5.2 ft·lb)1234 4abdcTiming belt installation height “a”:2.0 mm (0.08 in)a1