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8
Adjusting Engine Idle Speed
IMPORTANT!
A clean and unrestricted airow is essen-
tial to your blower’s engine performance
and durability! Before attempting any
carburetor adjustments, inspect and clean
the engine air lter as described on page
10 of this manual.
IMPORTANT!
Blower tubes and the air cleaner must be
in place while adjusting engine idle! Engine
idle speed will also be affected if the blower
tubes are blocked or incorrectly installed!
Idle Increase
Idle Decrease
Idle
Adjustment
Screw
Figure 9
1. Place the unit on the ground and start
the engine, then allow it to idle 2-3
minutes until warm.
NOTE:
Carburetor fuel mixture adjustments are pre-
set at factory on units with emission control
systems and cannot be serviced in the field.
2. If a tachometer is available, the engine idle
speed should be final adjusted to 3000
(
±
300)min
-1
(rpm). See Figure 9.
WARNING!
Never operate the blower unless all
controls are properly installed and in
good working order. Never operate the
blower if the cylinder cover is missing
or damaged!
If The Engine Does Not Start–
Repeat the appropriate starting procedures
for warm or cold engine. If the engine still
will not start, follow the “Starting a Flooded
Engine” procedure.
Starting A Flooded Engine
1. Disconnect the spark plug lead, and
remove the spark plug (see page 11 for
procedures).
2. If the spark plug is fouled or is soaked
with fuel, clean or replace the plug as
required.
3. With the spark plug removed, open the
choke, put the throttle lever in the full
throttle position, then clear excess fuel
from the combustion chamber by crank-
ing the engine several times.
4. Install and tighten the spark plug, and
reconnect the spark plug lead.
5. Repeat the starting procedures for a
warm engine.
6. If the engine still fails to start or fire,
refer to the troubleshooting flow chart
at the end of this manual.
Throttle Lever
Figure 8
Stopping The Engine
1. Cool the engine by allowing it to run at
idle for 2–3 minutes.
2. Slide the ignition switch towards the
rear to “O” (OFF). See Figure 8.
Ignition
Switch
OFF
Starting the Engine (continued)
5. Hold the blower firmly with your left
hand on the handle.
6. Using your right hand, pull the starter
handle slowly until you feel the starter
engage. See Figure 7.
Pull upward
rapidly
Figure 7
7. As the starter engages, pull the starter
handle upward rapidly.
8. If necessary, repeat Steps 6 and 7 until
the engine starts.
When The Engine Starts–
1. Open the choke (if it is not already
open) by moving the choke lever down.
2. If the engine does not continue to run,
repeat the appropriate starting proce-
dures for a cold or warm engine.
3. Operate the throttle to reduce engine to
idle speed until operating temperature is
reached (2–3 minutes).
The blower should
now be ready for use.
Figure 6
Full Throttle
Idle
4. Slide the ignition switch to the “I” (ON)
position, then depress the throttle lever
half way and lock throttle by moving
throttle lock lever halfway down. See
Figure 6.
Throttle
Lever
ON
Throttle
Lock
Lever
Ignition
Switch