Bolens 247.77010 - Manual (Page 12)

SERVICE AND ADJUSTMENTS
A WARNING: Do not at any time make any
adjustment to the unit without first stopping
engine and disconnecting spark plug wire.
NOZZLE HEIGHT ADJUSTMENT
The nozzle can be adjusted to any of five positions,
ranging from 5/8" to 3 3/4" ground clearance. The
nozzle height has to be adjusted according to the
conditions. Move the height adjustment levers for­
ward or backward to adjust the nozzle upward or
downward. See Figure 11.
NOTE: In general, raise the nozzle height to vacuum
a thick layer of leaves or to operate with the blower
chute. Lower the nozzle height for smoother sur­
faces. Picture is shown without engine for clarity.
CARBURETOR ADJUSTMENT
A WARNING: If any adjustments (e.g. carbu­
retor) are made to the engine while the
engine is running, keep clear of all moving
parts. Be careful of heated surfaces and
muffler.
The carburetor has been pre-set at the factory and
should not require adjustment. If your engine does
not operate properly due to suspected carburetor
problems, take your Yard Vacuum to a Sears Service
Center for repair and adjustment.
NOTE: A dirty air cleaner will cause the engine to run
rough. Be certain air cleaner is clean and attached to
the carburetor before adjusting carburetor.
ENGINE SPEED
The engine speed on your Yard Vacuum has been
set at the factory. Do not attempt to increase the
engine RPM. If you think that the engine is running
too fast or too slow, take your Yard Vacuum to the
nearest Sears Service Center for repair and adjust­
ment.
A WARNING: Do not attempt to alter the
engine speed by tampering with the
engine’s governor linkage. Doing so could
result in serious personal injury and dam­
age to the engine. The engine RPM has
been set at the factory.
REMOVING THE FLAIL SCREEN
If the discharge area becomes clogged, remove the
flail screen and clean area as follows.
1. Stop the engine. Make certain the chipper
shredder vacuum has come to a complete stop.
Disconnect and ground the spark plug wire
before unclogging the discharge chute.
2. Remove the vacuum bag or blower chute from
the unit as instructed in the OPERATION sec­
tion to obtain access to flail screen. See Figure
12 .
3. Remove hex screw on right side of unit that
attaches to the flail screen. See Figure 13.
12