Yamaha YZF-R125 Service Manual: Checking the connections
Check the leads, couplers, and connectors for stains, rust, moisture, etc.
1. Disconnect:
- Lead
- Coupler
- Connector
2. Check:
- Lead
- Coupler
- Connector
Moisture → Dry with an air blower.
Rust/stains → Connect and disconnect several times.
3. Check:
- All connections
Loose connection → Connect properly.
NOTE:
If the pin "1" on the terminal is flattened, bend it up.
4. Connect:
- Lead
- Coupler
- Connector
NOTE:
Make sure all connections are tight.
5. Check:
- Continuity
(with the pocket tester)
NOTE:
If there is no continuity, clean the terminals.
When checking the wire harness, perform steps (1) to (3).
As a quick remedy, use a contact revitalizer available at most part stores.
Circlips
Before reassembly, check all circlips carefully
and replace damaged or distorted circlips. Always
replace piston pin clips after one use.
When installing a circlip "1", make sure the
sharp-edged ...
Special tools
The following special tools are necessary for complete and accurate tune-up
and assembly. Use only
the appropriate special tools as this will help prevent damage caused by the use
of inappropriat ...
Other materials:
General tightening torque specifications
This chart specifies tightening torques for standard
fasteners with a standard ISO thread pitch.
Tightening torque specifications for special components
or assemblies are provided for each
chapter of this manual. To avoid warpage, tighten
multi-fastener assemblies in a crisscross pattern
and ...
Checking the ignition coil
1. Check:
Primary coil resistance
Out of specification Replace.
a. Disconnect the ignition coil connectors from
the ignition coil terminals.
b. Connect the pocket tester ( × 1)
to the ignition
coil as shown.
Positive tester probe
red/white "1"
Negative tester probe
orange ...
Supporting the motorcycle
Since this model is not equipped with a
centerstand, follow these precautions
when removing the front and rear
wheel or performing other maintenance
requiring the motorcycle to stand upright.
Check that the motorcycle is in a
stable and level position before starting
any maintenance. A ...