Yamaha F150B Service Manual

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

8-31LOWR Lower unit20. Check that the reverse gear backlashaverage is within specification.TIP:Adjust the shim thicknesses if the reversegear backlash is out of specification.21. Remove the special service tools, andthen install the water pump assembly.See “Installing the water pump” (8-22).Shimming• Make sure to select the pinion shim(s) (T3)before selecting the forward gear shim(s)(T1) and reverse gear shim(s) (T2).• When assembling the lower unit to mea-sure the backlash after selecting the pinionshim(s) (T3), do not apply gear oil, grease,or sealant to the parts.• When assembling the lower unit after shim-ming is completed, make sure to apply gearoil, grease, and sealant to the specifiedareas.Reverse gear backlash:0.33–0.74 mm (0.0130–0.0291 in)