Yamaha F150B Service Manual

Also see for F150B: Owner's manual Service manual Owner's manual

6-32Vapor separator012345678910ADraining the fuel1. Drain the remained gasoline in the vaporseparator with a drain pan. Loosen thedrain screw a, and then remove the capb. Push in the air valve with a screw-driver.2. Tighten the drain screw a to the speci-fied torque.Checking the vacuum hose1. Check the vacuum hose. Replace thevacuum hose if cracked or damaged.Checking the fuel filter1. Check the fuel filter a. Replace the fuelfilter if there is dirt, residue, or externaldamage.Disassembling the vapor separator1. Remove the float pin a in the direction ofthe arrow a.2. Remove the needle valve assembly andother components. See exploded dia-gram (6-29).Checking the high-pressure fuelpump1. Check the high-pressure fuel pump elec-trical performance. See “Checking thehigh-pressure fuel pump” (5-25).Checking the vapor separator1. Place the cover assembly upside down,and then measure the float height a.TIP:To measure the height of the float, it shouldbe resting on the needle valve. Do not pressthe float.Vapor separator drain screw a:2 N·m (0.2 kgf·m, 1.5 ft·lb)baaFloat height a: 55.0–61.0 mm (2.2–2.4 in)aaa