Troubleshooting - Yamaha TTR 125 2020 Owner's Manual

Periodic maintenance and adjustment
1. Slot
2. Retainer
2. Install the drive chain onto the rear
sprocket, and then adjust the
7
drive chain slack. (See page 7-21.)
3. Install the axle nut, and then lower
the rear wheel so that it is on the
ground.
4. Tighten the axle nut to the speci-
fied torque.
Tightening torque:
Axle nut:
60 N·m (6.0 kgf·m, 44 lb·ft)
5. 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.
6. Adjust the brake pedal free play.
(See page 7-18.)
7-31

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
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
EAU25853
EWA15142