Yamaha YZ 2018 Series Owner's Service Manual page 20

ECA
NOTICE
Handle electrical components with special
care, and do not subject them to strong
shocks.
ECA
NOTICE
Electrical components are very sensitive to
and can be damaged by static electricity.
Therefore, never touch the terminals and be
sure to keep the contacts clean.
TIP
Push and hold the engine stop switch to turn off
the engine when resetting the ECU (Engine
Control Unit). Disconnect the starter motor lead
of the starter relay, and then push the starter
switch. Be sure to wait for five seconds or lon-
ger before pushing the start switch after the en-
gine is stopped.
BASIC SERVICE INFORMATION
Checking the electrical system
TIP
Before checking the electrical system, make
sure that the battery voltage is at least 12 V.
ECA
NOTICE
Never insert the tester probes into the cou-
pler terminal slots. Always insert the probes
from the opposite end "a" of the coupler,
taking care not to loosen or damage the
leads.
ECA
NOTICE
For waterproof couplers, never insert the
tester probes directly into the coupler.
When performing any checks using a water-
proof coupler, use the specified test har-
ness or a suitable commercially available
test harness.
1-8
a