Warm-Up Procedure - Cobra BC270KB Owner's Manual

Starting continued:
Warning:
Releasing the starting rope suddenly may allow the
rope to whip around and cause injury and/or
damage the recoil starting mechanism. When
starting the engine, firmly grasp the recoil starter
grip; do not grasp the starter rope itself.
Always control the rope as it rewinds into the
housing.
6. Squeeze the throttle lever to switch the lift up lever
to the "RUNNING" (engine idle speed) position, and
then release the throttle lever back to fully
"CLOSED" (engine idle speed)
Note:
Should the engine fail to start, do not try the
recoil start many times with the lift up lever to
the "STARTING" position or the choke lever to
the "CLOSED" position.
This will cause the fuel to flood into the cylinder and
make starting even more difficult. In this case, set
the lift up lever to the "RUNNING" position or the
choke lever to the "OPEN" position. And then, repeat
the starting.
After starting, vary the engine speed a few times, by
operating the throttle lever to draw out the remaining
air in the carburettor.
Note:
Allow sufficient warm-up time to prevent engine
damage and run the engine smoothly.
The engine should be run at idle speed for a few
minutes to allow it to warm up before applying a
load. This will allow oil to reach engine parts, and
allow piston clearance
specifications.
to reach design
7. Warming Up Procedure
After starting the engine, run the engine at the idling
speed (throttle lever position is fully CLOSED) for a
few minutes.
Fuel Adjustment
The carburettor has been adjusted to the optimum
fuel supply at the factory. Don't reset the carburettor
setting.
(Note: if adjustment is needed, it should be
performed by an authorised dealer)
Idle Speed Adjustment:
If the engine does not run the idle speed, it may be
set too low, turn the idle screw clockwise to increase
the engine idle speed.
If the cutting head moves when the engine is running
at the idle speed, turn the idle screw counter-
clockwise to decrease the engine idle speed.
Refer to the engine manual for further details.
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