Yamaha WR450FB 2012 Owner's Service Manual page 366

Check each switch for continuity with the pocket tester. If the continuity reading is incorrect, check
the wiring connections and if necessary, replace the switch.
ECA14370
NOTICE
Never insert the tester probes into the coupler terminal slots "1". Always insert the probes
from the opposite end of the coupler, taking care not to loosen or damage the leads.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
TIP
• Before checking for continuity, set the pocket tester to "0" and to the "
• When checking for continuity, switch back and forth between the switch positions a few times.
The terminal connections for switches (e.g., main switch, engine stop switch) are shown in an illus-
tration similar to the one on below.
The switch positions "a" are shown in the far left column and the switch lead colors are shown in the
top row in the switch illustration.
TIP
" " indicates a continuity of electricity between switch terminals (i.e., a closed circuit at the
respective switch position).
ELECTRICAL COMPONENTS
9-62
1" range.