Troubleshooting - Yamaha YBR125ED Owner's Manual

6. Remove the axle nut, and then pull
the wheel axle out.
7. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
TIP
The drive chain does not need to be
disassembled in order to remove and
install the wheel.
8. Remove the wheel.
To install the rear wheel
1. Install the wheel by inserting the
wheel axle from the left-hand side.
2. Install the drive chain onto the rear
sprocket.
3. Install the axle nut.
4. Install the brake rod onto the
brake camshaft lever, and then in-
stall the brake pedal free play ad-
justing nut onto the brake rod.
5. Connect the brake torque rod to
the brake shoe plate by installing
the bolt and nut.
6. Adjust the drive chain slack. (See
page 6-21.)
PERIODIC MAINTENANCE AND ADJUSTMENT
7. Take the motorcycle off the cen-
terstand so that the rear wheel is
on the ground, and then put the
sidestand down.
8. Tighten the brake torque rod nut
and axle nut to the specified
torques.
Tightening torques:
Brake torque rod nut:
19 Nm (1.9 m·kgf, 14 ft·lbf)
Axle nut:
80 Nm (8.0 m·kgf, 58 ft·lbf)
9. Insert a new cotter pin.
10. Adjust the brake pedal free play.
(See page 6-18.)
WARNING
After adjusting the brake pedal free
play, check the operation of the
brake light.
6-36

Troubleshooting

Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
EWA10661
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from water
EAU25852
6
EWA15142