25
a)
b)
e)
c)
NOTE: the engine will per-
form at its optimum after
a
"
running-in
"
period of
approximately 200 drilling
operations.
d)
Before starting the engine, ensure that:
- the spindle shaft is fully retracted.
- the accelerator control lever is positioned at the low speed
position "0".
11.1)
Set the engine "
ON/OFF
" switch to the "
ON
" position
(Fig.
a
).
11.2)
Set the choke lever to the CLOSED position;
when engine is warm or in the case of high ambient tempera-
tures, this lever may require setting to the OPEN position (Fig.
b
).
11.3)
Keeping the accelerator control lever at the low speed
position, press the priming bulb repeatedly until fuel can be
seen in the clear-plastic fuel-return tube (Fig.
c
).
11.4)
Pull the starter grip lightly until resistance is felt, then
pull briskly (Fig.
d
). Return the starter grip gently.
Do not pull the rope out all the way
.
Do not allow the starter grip to snap back against the engine,
return it gently to prevent damage to the starter.
11.5)
If the choke lever was moved to the CLOSED posi-
tion to start the engine, gradually move it to the OPEN position
as the engine warms up (Fig.
e
).
11.6)
Keep the engine “warming up” for at least 3 minutes
before starting any actual drilling.
11.7)
To stop the engine, set the accelerator lever at the low
speed position and allow the engine to run at low speed for 2
or 3 minutes before stopping. Set the "
ON/OFF
" switch to the
"
OFF
" position.
11. STARTING THE ENGINE