Yamaha F400A 2022 - Lower Unit

Lower unit
Checking the propeller shaft housing ...................................... 8-21
Checking the reverse gear ....................................................... 8-22
Assembling the propeller shaft assembly ................................ 8-22
Assembling the reverse gear.................................................... 8-22
Assembling the propeller shaft housing assembly................... 8-23
Installing the propeller shaft housing assembly ....................... 8-25
Drive shaft and lower case (regular rotation model) .... 8-27
Removing the drive shaft ......................................................... 8-28
Disassembling the drive shaft .................................................. 8-28
Disassembling the forward gear .............................................. 8-29
Disassembling the lower case.................................................. 8-29
Checking the pinion ................................................................. 8-30
Checking the forward gear....................................................... 8-30
Checking the drive shaft .......................................................... 8-30
Checking the lower case.......................................................... 8-30
Assembling the lower case ...................................................... 8-30
Assembling the forward gear ................................................... 8-31
Assembling the drive shaft....................................................... 8-31
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 ........................................................................... 8-38
Selecting the forward gear shim (T1) and reverse gear
shim (T2)................................................................................... 8-39
Selecting the pinion shim (T3) .................................................. 8-39
Measuring the forward gear backlash and reverse gear
backlash ................................................................................... 8-41
Selecting the propeller shaft shim (T4)..................................... 8-45
Propeller shaft housing (counter rotation model) ......... 8-48
Removing the propeller shaft housing assembly ..................... 8-49
Disassembling the propeller shaft housing assembly.............. 8-49
Disassembling the forward gear .............................................. 8-50
Checking the propeller shaft .................................................... 8-50
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 ....................... 8-52