12
IMPORTANT
For maximum vacuum performance and
operating life, allow the engine to warm
A two-position "ON-OFF" switch located or
before use.
the left of the machine handle grip control:
1. Run the engine at idle speed until
the engine ignition.
operating temperature is reached (2 to 3
Starting Procedure
minutes).
1. Prime the fuel system by repeatedly
2. As the engine warms, open the choke
depressing the fuel primer bulb until no air
gradually by slowly pushing the choke
bubbles are visible in the fuel discharge line.
control in to the fully retracted position.
2. Cold Engine Only. Choke the engine
3. The machine should now be ready for
by pulling the choke control to the fully
use.
extended position (choke is closed).
If the engine does not start
3. Place the machine on the ground, and
Repeat the appropriate starting procedures
hold the machine handle firmly with your
for "hot" or "cold" engine. If the engine still
right hand.
will not start, follow the "Starting a Flooded
4. Pull the starter cord slowly until you feel
Engine" procedure (below).
the starter engage, then...
Starting a flooded engine
5. ...start the machine by pulling the starter
1. Disconnect the spark plug lead, and use
cord upward rapidly.
the spark plug wrench to remove the plug in
If necessary, repeat Step 5 two or three
a counterclockwise direction.
times until the engine starts.
2. If the spark plug is fouled or is soaked
with fuel, clean or replace the plug as
required.
3. Clear excess fuel from the combustion
chamber by cranking the engine several
times while the spark plug is removed.
4. Install the spark plug and firmly tighten
it with the spark plug wrench. If a torque
wrench is available, torque the spark plug to
148-165 inch-pounds. Reconnect the spark
plug lead.
5. Repeat the starting procedures for `
warm engine'.
6. If the engine still fails to fire or start,
refer to the troubleshooting flowchart at the
end of this manual.
When the engine starts
IMPORTANT !
For maximum vacuum performance and
operating life, allow the engine to warm
before use.