POWR
6D81G11
Power unit
Special service tools ..................................................................................... 5-1
Power unit....................................................................................................... 5-3
Checking the compression pressure ......................................................... 5-3
Checking the oil pressure .......................................................................... 5-3
Checking the valve clearance.................................................................. 5-10
Replacing the timing belt ......................................................................... 5-13
Removing the power unit......................................................................... 5-16
Removing the timing belt and sprockets.................................................. 5-17
Checking the timing belt and sprockets................................................... 5-18
Installing the sprockets and timing belt.................................................... 5-18
Throttle link................................................................................................... 5-20
ECM ............................................................................................................... 5-21
Junction box................................................................................................. 5-22
Cylinder head ............................................................................................... 5-24
Removing the cylinder head .................................................................... 5-26
Checking the valve lifters......................................................................... 5-27
Checking the valve springs...................................................................... 5-27
Checking the valves ................................................................................ 5-27
Checking the valve guides....................................................................... 5-28
Replacing the valve guides...................................................................... 5-28
Checking the valve seat .......................................................................... 5-29
Refacing the valve seat ........................................................................... 5-30
Checking the camshafts .......................................................................... 5-31
Checking the cylinder head ..................................................................... 5-32
Installing the valves ................................................................................. 5-33
Installing the cylinder head ...................................................................... 5-33
Exhaust cover .............................................................................................. 5-36
Removing the exhaust cover ................................................................... 5-38
Checking the pressure control valve ....................................................... 5-38
Installing the pressure control valve ........................................................ 5-38
Installing the exhaust cover ..................................................................... 5-38
Summary of Contents for F90D
Page 1: ...F90D SERVICE MANUAL 6D8 28197 1G 11 LIT 18616 02 86 LIT186160286 ...
Page 68: ...6D81G11 5 2 1 2 3 4 5 6 7 8 9 Oil filter wrench YU 38411 Special service tools ...
Page 122: ...LOWR Lower unit 6 3 6D81G11 Dial indicator gauge YU 03097 Magnetic base stand YU A8438 ...
Page 144: ...LOWR Lower unit 6 25 6D81G11 Shimming 6 ...
Page 209: ...6D81G11 8 12 1 2 3 4 5 6 7 8 9 S60V8265 Br B Fuel control system Starting system ...
Page 241: ...YAMAHA MOTOR CORPORATION USA Printed in USA Jul 2004 0 0 1 CR E ...