Power Unit Contents - Yamaha 25BMH Service Manual

POWR
RECOIL STARTER .......................................................................................... 5-1
REMOVING THE RECOIL STARTER ....................................................... 5-1
DISASSEMBLING THE RECOIL STARTER ............................................. 5-2
CHECKING THE RECOIL STARTER ........................................................ 5-4
ASSEMBLING THE RECOIL STARTER ................................................... 5-6
INSTALLING THE RECOIL STARTER ...................................................... 5-9
FLYWHEEL MAGNET ................................................................................... 5-10
REMOVING THE FLYWHEEL MAGNET ................................................ 5-10
INSTALLING THE FLYWHEEL MAGNET .............................................. 5-11
POWER UNIT ............................................................................................... 5-12
DISCONNECTING THE LEADS AND STAYS ........................................ 5-12
REMOVING THE POWER UNIT ............................................................ 5-14
MAGNET BASE AND CONTROL LEVER .................................................... 5-15
REMOVING THE MAGNET BASE AND
MAGNET CONTROL LEVER ................................................................. 5-15
INSTALLING THE MAGNET CONTROL LEVER ................................... 5-18
INTAKE MANIFOLD AND REED VALVES ................................................... 5-19
REMOVING THE INTAKE MANIFOLD AND REED VALVES ................ 5-19
CHECKING THE REED VALVES ............................................................ 5-20
INSTALLING THE INTAKE MANIFOLD ................................................ 5-20
CYLINDER HEAD ......................................................................................... 5-21
REMOVING THE CYLINDER HEAD ...................................................... 5-21
CHECKING THE CYLINDER HEAD ....................................................... 5-22
CHECKING THE THERMOSTAT ............................................................ 5-23
INSTALLING THE CYLINDER HEAD AND
CYLINDER HEAD COVER ...................................................................... 5-24
INSTALLING THE THERMOSTAT ......................................................... 5-24
EXHAUST COVER ........................................................................................ 5-25
REMOVING THE EXHAUST COVER ..................................................... 5-25
CHECKING THE EXHAUST COVER ...................................................... 5-26
INSTALLING THE EXHAUST COVER ................................................... 5-26
CRANKCASE ................................................................................................ 5-27
REMOVING THE CRANKCASE ............................................................. 5-27
ASSEMBLING THE OIL SEAL HOUSING ............................................. 5-28
IINSTALLING THE CRANKCASE .......................................................... 5-28
CHAPTER 5
POWER UNIT
E
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