Yamaha F350B - Lower Unit

Lower unit
Drive shaft and lower case (regular rotation model) .... 8-26
Removing the drive shaft.......................................................... 8-27
Removing the forward gear ...................................................... 8-27
Disassembling the oil seal housing .......................................... 8-27
Disassembling the drive shaft .................................................. 8-27
Disassembling the forward gear............................................... 8-28
Disassembling the lower case.................................................. 8-29
Checking the pinion.................................................................. 8-29
Checking the forward gear ....................................................... 8-29
Checking the drive shaft........................................................... 8-30
Checking the lower case .......................................................... 8-30
Assembling the drive shaft ....................................................... 8-30
Assembling the forward gear.................................................... 8-32
Assembling the lower case....................................................... 8-32
Assembling the oil seal housing ............................................... 8-33
Installing the forward gear ........................................................ 8-34
Installing the drive shaft............................................................ 8-34
Shimming (regular rotation model) ................................ 8-36
Shimming workflow .................................................................. 8-36
Shimming check sheet ............................................................. 8-37
Shimming procedure ................................................................ 8-38
Shim location............................................................................ 8-39
Selecting the forward gear shim (T1) and reverse gear shim
(T2)........................................................................................... 8-40
Selecting the pinion shim (T3).................................................. 8-40
Measuring the forward gear backlash and reverse gear
backlash ................................................................................... 8-42
Selecting the propeller shaft shim (T4)..................................... 8-46
Propeller shaft housing (counter rotation model)......... 8-48
Removing the propeller shaft housing assembly...................... 8-50
Disassembling the propeller shaft housing assembly .............. 8-50
Disassembling the forward gear............................................... 8-51
Checking the propeller shaft..................................................... 8-51
Checking the dog clutch ........................................................... 8-51
Checking the propeller shaft housing ....................................... 8-51
Checking the forward gear ....................................................... 8-51
Assembling the propeller shaft housing and forward gear ....... 8-51
Installing the propeller shaft housing assembly........................ 8-53