Yamaha F150B Service Manual

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

10-13MNT Maintenance2. Place a drain pan a under the gear oildrain hole.3. Remove the gear oil drain screw b andgasket c. NOTICE: If there is anexcessive quantity of metal particleson the magnetic gear oil drain screwb, this can indicate lower unitproblem.TIP:If a magnetic gear oil drain screw isequipped, remove all metal particles from thescrew before installing it.4. Remove the gear oil check screw d andgasket c to allow the oil to draincompletely. NOTICE: Check the usedoil after it has been drained. If the oilis milky, water is getting into the gearcase which can cause gear damage.5. Insert the gear oil pump into the drainhole and slowly fill with gear oil until oilflows out of the check hole and no airbubbles are visible.6. Install new gaskets c and the gear oilcheck screw d, quickly install the gearoil drain screw b, and then tighten themto the specified torque.Checking the gear shift operation1. Check that the gear shift operatessmoothly when shifting it from N positionto F or R. Adjust the shift cable length ifthe gear shift cannot be operatedsmoothly. For adjusting the shift cablelength, see “Installing the shift cable” (3-8) step 7–step 12.2. Check the neutral switch for continuity.See “Checking the neutral switch” (5-37).Lubricating the outboard motor1. Apply water resistant grease to theareas.ac bRecommended gear oil:Hypoid gear oilAPI: GL-4SAE: 90Oil quantity:Regular rotation model:0.980 L (1.036 US qt, 0.862 lmp qt)Counter rotation model:0.870 L (0.919 US qt, 0.765 lmp qt)Gear oil check screw d andgear oil drain screw b:9 N·m (0.9 kgf·m, 6.6 ft·lb)dc