Yamaha YZ450F Owner's Service Manual page 29

Tool name/Part number
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Timing light
90890-03141
YU-03141
Pressure gauge
90890-03153
YU-03153
Fuel pressure adapter
90890-03186
YM-03186
Test harness S-pressure
sensor (3P)
90890-03207
YU-03207
FI diagnostic tool sub-lead
90890-03212
YU-03212
Yamaha diagnostic tool
90890-03231
Yamaha diagnostic tool (US)
90890-03234
Valve guide remover & in-
staller set (ø5.5)
90890-04016
Valve guide remover (5.5
mm)
YM-01122
Valve guide installer (5.5
mm)
YM-04015
Valve guide reamer (5.5 mm)
YM-01196
How to use
This tool is used to measure
the voltage, current, and re-
sistance of electrical compo-
nents.
This tool is used to measure
the ignition timing.
This tool is used to measure
the fuel pressure.
This tool is used to mount the
pressure gauge.
This tool is used to check the
throttle position sensor input
voltage.
This tool is used to connect
the Yamaha diagnostic tool
to a battery.
This tool is used to check er-
ror codes or carry out self-di-
agnosis.
This tool is used to replace
the valve guide.
1-15
SPECIAL TOOLS
Illustration