Yamaha F4 Service Manual

Also see for F4: Owner's manual Owner's manual Brochure & specs Owner's manual Owner's manual

Contents

LOWER UNITINSPADJ E3-101124356Lower unit leakage check1. Check:9PressurePressure drops Æ Inspect the oil sealsand components.Checking steps:8 Connect the leakage tester to the oillevel checking hole.Leakage tester:YB-03595/90890-06762Replacement steps:8 Hold the outboard motor in an up-right position.8 Place a container under the drain plug1.8 Remove the drain plug, the oil levelplug 2, and then drain the gear oil.8 Place the outboard in an upright posi-tion.8 Add gear oil through the drain hole 3until it overflows at the oil levelchecking hole 4.8 Install the oil level plug 5 first andthen the drain plug 6.Recommended gear oil:GEAR CASE LUB (USA) orHypoid gear oil, SAE #90Total quantity:100 cm 3(3.38 US oz, 3.52 Imp oz)LOWER UNITGear oil1. Check:9Gear oilMilky oil Æ Replace the oil seal.Slag oil Æ Check the gear, bearing anddog.2. Check:9Gear oil levellevel is low Æ Add oil to the properlevel.3. Replace:9Gear oil