Yamaha YZF-R125 Service Manual: Checking the front fork legs
The following procedure applies to both of the front fork legs.
1. Check:
- Inner tube
- Outer tube
Bends/damage/scratches
Replace.
| WARNING Do not attempt to straighten a bent inner tube as this may dangerously weaken it. |
2. Measure:
- Spring free length "a"
Out of specification
Replace.
3. Check:
- Damper rod
Damage/wear
Replace.
Obstruction
Blow out all
of the oil passages with compressed air. - Oil flow stopper
Damage
Replace.
| CAUTION: When disassembling and assembling the front fork leg, do not allow any foreign material to enter the front fork. |
Disassembling the front fork legs
The following procedure applies to both of the
front fork legs.
1. Remove:
Rubber cap
Clip "1"
Front fork cap "2"
(with O-ring)
Fork spring
NOTE:
Push the front fork cap in the direc ...
Assembling the front fork legs
The following procedure applies to both of the
front fork legs.
WARNING
Make sure the oil levels in both front fork
legs are equal.
Uneven oil levels can result in poor handling
...
Other materials:
Checking the speed sensor
1. Check:
Speed sensor output voltage
Out of specification → Replace.
a. Connect the pocket tester (DC 20 V) to the
speed sensor coupler (wire harness end) as
shown.
Positive tester probe
gray "1"
Negative tester probe
gray/black "2"
b. Set the main switch to "ON".
c. ...
Checking the bulbs and bulb sockets
NOTE:
Do not check any of the lights that use LEDs.
Check each bulb and bulb socket for damage or
wear, proper connections, and also for continuity
between the terminals.
Damage/wear Repair or replace
the bulb,
bulb socket or both.
Improperly connected Properly
connect.
No c ...
Removing and installing the cowlings and panel
Removing and installing the cowlings and panel
Cowling A
Cowling B
Cowling C
Cowling D
Panel A
The cowlings and panel shown need to
be removed to perform some of the
maintenance jobs described in this
chapter. Refer to this section each time
a cowling or panel needs to be ...