Yamaha F50A - Power Unit; Troubleshooting; Special Service Tools; Timing Belt and Sprockets

POWR
62Y3A11
Power unit
Troubleshooting.............................................................................................5-1
Special service tools ...................................................................................5-10
Power unit.....................................................................................................5-13
Checking the compression pressure .......................................................5-25
Checking the oil pressure ........................................................................5-25
Removing the power unit.........................................................................5-26
Timing belt and sprockets...........................................................................5-29
Removing the timing belt and sprockets..................................................5-31
Checking the timing belt and sprockets...................................................5-32
Installing the timing belt and sprockets....................................................5-32
Cylinder head ...............................................................................................5-35
Removing the cylinder head ....................................................................5-39
Checking the valve springs......................................................................5-40
Checking the valves ................................................................................5-40
Checking the valve guides.......................................................................5-41
Replacing the valve guides......................................................................5-41
Checking the valve seat ..........................................................................5-42
Refacing the valve seat ...........................................................................5-43
Checking the rocker arms and rocker arm shaft......................................5-45
Checking the camshaft ............................................................................5-45
Checking the cylinder head .....................................................................5-46
Checking the oil pump .............................................................................5-47
Installing the valves .................................................................................5-47
Installing the camshaft.............................................................................5-48
Installing the rocker arm assembly ..........................................................5-49
Installing the cylinder head ......................................................................5-49