Yamaha TZ125M1 Owner's Service Manual page 24

CONTROL FUNCTIONS
EC157000
REAR BRAKE PEDAL
The rear brake pedal 1 is located on the right
side of the machine. Press down on the brake
pedal to activate the rear brake.
EC158001
FUEL COCK
The fuel cock supplies fuel from the tank to
carburetor while filtering the fuel. The fuel cock
has the two positions:
OFF: With the lever in this position, fuel will
not flow. Always return the lever to this
position when the engine is not run-
ning.
ON: With the lever in this position, fuel flows
to the carburetor. Normal riding is done
with the lever in this position.
EC159000
STARTER KNOB (CHOKE)
When cold, the engine requires a richer air-fuel
mixture for starting. A separate starter circuit,
which is controlled by the starter knob 1, sup-
plies this mixture. Pull the starter knob out to
open the circuit for starting. When the engine
has warmed up, push it in to close the circuit.
EC15V000
TACHOMETER
A stepping motor type tachometer is provided
for greater accuracy of the tachometer 1. This
tachometer features the following:
Sweeping:
After the engine is started, the tachometer
hand sweeps widely once over the tachometer
face and then returns to the zero position, as
initial operation. This is called "sweeping". After
that, the tachometer indicates the correct revo-
lutions.
Out-of-step indication:
If this tachometer is subjected to impact, etc, it
may allow its hand to point to the position b
stepping out of the position a where the hand
should be for correct indication. This is called
an "out-of-step" indication. A similar phenome-
non may take place when the engine is
stopped during sweeping or at high rpm (as in
a plug chop) or while the machine is transport-
ed, though it never happens in normal riding.
1-10
GEN
INFO