Basic Service Information; Electrical System - Yamaha YZ125X 2021 Owner's Service Manual

EAM20120

BASIC SERVICE INFORMATION

EAM30181

ELECTRICAL SYSTEM

Checking the electrical system
ECA14371
NOTICE
Never insert the tester probes into the cou-
pler terminal slots. Always insert the probes
from the opposite end "a" of the coupler, tak-
ing care not to loosen or damage the leads.
ECA16640
NOTICE
For waterproof couplers, never insert the
tester probes directly into the coupler. When
performing any checks using a waterproof
coupler, use the specified test harness or a
suitable commercially available test har-
ness.
Checking the connections
Check the leads, couplers, and connectors for
stains, rust, moisture, etc.
1. Disconnect:
• Lead
• Coupler
• Connector
ECA16780
NOTICE
• When disconnecting a coupler, release the
coupler lock, hold both sections of the cou-
pler securely, and then disconnect the cou-
pler.
BASIC SERVICE INFORMATION
a
1-10
• There are many types of coupler locks;
therefore, be sure to check the type of cou-
pler lock before disconnecting the coupler.
ECA16790
NOTICE
When disconnecting a connector, do not pull
the leads. Hold both sections of the connec-
tor securely, and then disconnect the con-
nector.
2. Check:
• Lead
• Coupler
• Connector
Moisture  Dry with compressed air.
Rust/stains  Connect and disconnect sev-
eral times.
3. Check:
• All connections
Loose connection  Connect properly.