SELVA MARINE Blue Whale 250 EFI, Service Manual

Page: 112 / 377

POWR
6P23H11
Power unit
Power unit....................................................................................................... 5-1
Checking the compression pressure ......................................................... 5-1
Checking the oil pressure .......................................................................... 5-1
Checking the oil pressure sensor .............................................................. 5-2
Checking the valve clearance.................................................................. 5-10
Adjusting the valve clearance.................................................................. 5-11
Replacing the timing belt ......................................................................... 5-15
Removing the wiring harness guide ........................................................ 5-20
Removing the power unit......................................................................... 5-21
Removing the timing belt, driven sprocket, and camshaft ....................... 5-23
Checking the timing belt and sprocket..................................................... 5-27
Checking the valve lifter .......................................................................... 5-27
Checking the camshaft ............................................................................ 5-27
Installing the camshaft, driven sprocket, and timing belt ......................... 5-28
Starter motor and accelerator position sensor ......................................... 5-35
ECM ............................................................................................................... 5-36
Fuse box ....................................................................................................... 5-37
Junction box................................................................................................. 5-38
Exhaust cover .............................................................................................. 5-39
Removing the exhaust cover ................................................................... 5-40
Checking the exhaust cover anode ......................................................... 5-40
Installing the exhaust cover ..................................................................... 5-40
Cylinder head ............................................................................................... 5-41
Removing the cylinder head .................................................................... 5-43
Checking the valve spring ....................................................................... 5-43
Checking the valve .................................................................................. 5-43
Checking the valve guide ........................................................................ 5-44
Replacing the valve guide ....................................................................... 5-45
Checking the valve seat .......................................................................... 5-45
Refacing the valve seat ........................................................................... 5-46
Checking the cylinder head ..................................................................... 5-48
Installing the valve ................................................................................... 5-49
Removing the cooling water passage cover............................................ 5-49
Checking the cooling water passage cover anode .................................. 5-50
Installing the cooling water passage cover.............................................. 5-50
Installing the cylinder head ...................................................................... 5-51