SELVA MARINE Blue Whale 250 EFI Service Manual page 190

LOWR
Lower unit (regular rotation model) ............................................................. 6-1
Removing the lower unit ............................................................................6-4
Removing the water pump and shift rod.................................................... 6-5
Checking the water pump and shift rod .....................................................6-5
Propeller shaft housing (regular rotation model) ....................................... 6-6
Removing the propeller shaft housing assembly....................................... 6-8
Disassembling the propeller shaft assembly .............................................6-8
Disassembling the propeller shaft housing................................................ 6-8
Checking the propeller shaft housing ........................................................6-9
Checking the propeller shaft...................................................................... 6-9
Assembling the propeller shaft assembly .................................................. 6-9
Assembling the propeller shaft housing.....................................................6-9
Drive shaft and lower case (regular rotation model) ................................6-12
Removing the drive shaft.........................................................................6-14
Disassembling the drive shaft housing ....................................................6-14
Disassembling the forward gear ..............................................................6-14
Disassembling the lower case .................................................................6-14
Checking the pinion and forward gear.....................................................6-15
Checking the bearing............................................................................... 6-15
Checking the drive shaft ..........................................................................6-15
Checking the lower case .........................................................................6-15
Assembling the lower case...................................................................... 6-15
Assembling the forward gear................................................................... 6-16
Assembling the drive shaft housing......................................................... 6-16
Installing the drive shaft...........................................................................6-16
Installing the propeller shaft housing .......................................................6-17
Installing the water pump and shift rod....................................................6-18
Installing the lower unit ............................................................................6-19
Shimming (regular rotation model) ............................................................ 6-22
Shimming.................................................................................................6-23
Selecting the pinion shim.........................................................................6-23
Selecting the forward gear shim ..............................................................6-24
Selecting the reverse gear shim ..............................................................6-25
Selecting the propeller shaft shim ........................................................... 6-27
Backlash (regular rotation model)..............................................................6-28
Measuring the forward and reverse gear backlash .................................6-28
Lower unit
6P23H11