Yamaha YZF-R125 Service Manual: 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 "2"
c. Measure the primary coil resistance.
2. Check:
Secondary coil resistance
Out of specification Replace.
a. Disconnect the spark plug cap from the ignition coil.
b. Connect the pocket tester ( ×
1k) to the ignition
coil as shown.
- Positive tester probe
orange "1" - Negative tester probe
spark plug lead "2"
c. Measure the secondary coil resistance.
Checking the spark plug cap
1. Check:
Spark plug cap resistance
Out of specification Replace.
a. Remove the spark plug cap from the spark
plug lead.
b. Connect the pocket tester ( × 1k)
to the
spark plug cap as ...
Checking the ignition spark gap
1. Check:
Ignition spark gap
Out of specification Perform the
ignition
system troubleshooting, starting with step 5.
Refer to "TROUBLESHOOTING" on page
8-3.
NOTE:
If the ignition spark gap ...
Other materials:
VInstalling the handlebars
1. Stand the vehicle on a level surface.
WARNINGSecurely support the vehicle so that there
is
no danger of it falling over.
2. Install:
Front brake master cylinder "1"
Front brake master cylinder holder "2"
Front brake light switch
NOTE:
Install the brake master cyl ...
Assembling the water pump
1. Install:
Water pump seal "1"
(into the water pump housing "2")
CAUTION:Never lubricate the water pump seal
surface
with oil or grease.
NOTE:
Install the water pump seal with the special
tools.
Install the water pump seal with the special
tools to the specifi ...
Removing the piston
1. Remove:
Piston pin clips "1"
Piston pin "2"
Piston "3"
CAUTION:Do not use a hammer to drive the piston
pin
out.
NOTE:
Before removing the piston pin clip, cover the
crankcase opening with a clean rag to prevent
the piston pin clip from falling in ...