Service manual

POWR
Power unit
Engine unit.......................................................................... 5-1
Engine mount ..................................................................... 5-3
Engine unit removal.................................................................... 5-4
Engine mount check................................................................... 5-6
Engine unit installation ............................................................... 5-6
Exhaust ring ..................................................................... 5-10
Exhaust chamber assy. ................................................... 5-11
Exhaust chamber ............................................................. 5-12
Muffler ............................................................................... 5-13
Reed valves ...................................................................... 5-14
Reed valve check ..................................................................... 5-15
Cylinder head ................................................................... 5-16
Cylinder head check................................................................. 5-17
Cylinder head installation ......................................................... 5-17
Cylinder............................................................................. 5-18
Cylinder check.......................................................................... 5-19
Cylinder installation .................................................................. 5-19
Pistons .............................................................................. 5-21
Piston pin clip removal and installation .................................... 5-22
Piston check ............................................................................. 5-22
Piston ring check ...................................................................... 5-22
Piston pin and bearing check ................................................... 5-23
Piston installation ..................................................................... 5-23
Flywheel magneto and base assy. ................................. 5-25
Starter clutch assy. .......................................................... 5-27
Drive coupling removal and installation.................................... 5-28
Flywheel magneto removal and installation ............................. 5-28
Drive coupling check ................................................................ 5-28
Flywheel magneto check.......................................................... 5-28
Starter clutch assy. check ........................................................ 5-29
Base assy. installation.............................................................. 5-29