Yamaha F50F Service Manual page 142

LOWR
Special service tools .....................................................................................6-1
Lower unit (F50, F60) .....................................................................................6-5
Removing the lower unit ............................................................................6-7
Removing the water pump......................................................................... 6-7
Checking the water pump..........................................................................6-7
Propeller shaft housing (F50, F60) ............................................................... 6-8
Removing the propeller shaft housing assembly....................................... 6-9
Disassembling the propeller shaft assembly .............................................6-9
Disassembling the propeller shaft housing................................................ 6-9
Checking the propeller shaft housing ......................................................6-10
Checking the propeller shaft.................................................................... 6-10
Assembling the propeller shaft assembly ................................................ 6-10
Assembling the propeller shaft housing...................................................6-10
Drive shaft and lower case (F50, F60) ........................................................ 6-12
Removing the drive shaft.........................................................................6-14
Disassembling the drive shaft.................................................................. 6-14
Disassembling the forward gear ..............................................................6-14
Disassembling the oil seal housing ......................................................... 6-14
Disassembling the lower case .................................................................6-15
Checking the shift rod and shift cam .......................................................6-15
Checking the pinion and forward gear.....................................................6-15
Checking the bearings............................................................................. 6-15
Checking the drive shaft ..........................................................................6-15
Checking the lower case .........................................................................6-16
Assembling the oil seal housing ..............................................................6-16
Assembling the lower case...................................................................... 6-16
Assembling the forward gear................................................................... 6-17
Assembling the drive shaft ...................................................................... 6-17
Installing the pinion.................................................................................. 6-17
Installing the oil seal housing................................................................... 6-18
Installing the propeller shaft housing .......................................................6-18
Installing the water pump.........................................................................6-19
Installing the lower unit ............................................................................6-19
Shimming (F50, F60) ....................................................................................6-22
Shimming.................................................................................................6-23
Selecting the pinion shims....................................................................... 6-23
Selecting the forward gear shims ............................................................ 6-24
Selecting the reverse gear shims ............................................................ 6-25
Backlash (F50, F60)......................................................................................6-25
Measuring the forward and reverse gear backlash .................................6-25
Lower unit
6C13G11