Yamaha YZF-R125 Service Manual: Removing the fuel tank
1. Extract the fuel in the fuel tank through the fuel tank filler hole with a pump.
2. Remove:
- Fuel hose connector cover "1"
3. Disconnect:
- Fuel hose "2"
CAUTION:
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NOTE:
Before removing the hose, place a few rags in the area under where it will be removed.
4. Remove:
- Fuel tank
Checking the fuel pump body
1. Check:
Fuel pump body
Obstruction 
Clean.
Cracks/damage
Replace the fuel tank.
Fuel tank
...
Installing the fuel hose
1. Install:
Fuel hose
Fuel hose connector cover
CAUTION:When installing the fuel hose, make sure
that
it is securely connected, and that the fuel
hose connector cover is in t ...
Other materials:
Checking the rear brake master cylinder
1. Check:
Brake master cylinder
Damage/scratches/wear Replace.
Brake fluid delivery passages
(brake master cylinder body)
Obstruction Blow out with
compressed air.
2. Check:
Brake master cylinder kit
Damage/scratches/wear Replace.
3. Check:
Brake fluid reservoir
Cracks/ ...
Checking the fid (fast idle solenoid)
1. Disconnect:
FID (fast idle solenoid) coupler
2. Check:
FID (fast idle solenoid) resistance
a. Disconnect the FID (fast idle solenoid) coupler
from the FID.
b. Connect the pocket tester ( × 10)
to the terminals
of the FID (fast idle solenoid).
Positive tester probe ...
Checking the steering
Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as follows
at the intervals specified in the periodic
maintenance and lubrication
chart.
Place a stand under the engine to
raise the front wheel off the
ground. WARNING! To ...