Powr - Yamaha E115A Service Manual

POWR

Power unit ..................................................................................................... 5-1
Checking the compression pressure ....................................................... 5-1
Disassembling the manual starter (MH, WH) ........................................ 5-14
Checking the spiral spring (MH, WH) .................................................... 5-15
Checking the drive pawl (MH, WH) ....................................................... 5-15
Checking the starter rope (MH, WH) ..................................................... 5-15
Assembling the manual starter (MH, WH) ............................................. 5-15
Removing the power unit ....................................................................... 5-17
Removing the flywheel magnet ............................................................. 5-19
Removing the electrical component ........................................................5-20
Intake manifold ........................................................................................... 5-22
Removing the intake manifold ............................................................... 5-24
Checking the reed valve ........................................................................ 5-24
Exhaust cover ............................................................................................ 5-25
Removing the exhaust cover ................................................................. 5-26
Checking the exhaust cover .................................................................. 5-26
Checking the PCV ................................................................................. 5-26
Installing the PCV ....................................................................................5-26
Cylinder head ............................................................................................. 5-27
Removing the cylinder head .................................................................. 5-29
Checking the cylinder head ................................................................... 5-29
Crankcase ................................................................................................... 5-31
Removing the crankcase ....................................................................... 5-34
Disassembling the bearing housing.........................................................5-34
Disassembling the oil seal housing ....................................................... 5-35
Removing the piston, connecting rod assembly and crankshaft
assembly .............................................................................................. 5-35
Disassembling the piston and connecting rod assembly ...................... 5-35
Checking the bearing ............................................................................ 5-35
Disassembling the crankshaft ............................................................... 5-36
Checking the piston diameter ................................................................ 5-36
Checking the cylinder bore .................................................................... 5-37
Checking the piston clearance .............................................................. 5-37
Power unit
61U5H11