Craftsman 247.77099 User Manual

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16
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 Parts & Repair Center for repair and 
adjustment.
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 damage 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.
Stop the engine. Make certain the chipper       
shredder vacuum has come to a complete stop.
Before unclogging the discharge chute, 
disconnect and ground the spark plug wire to 
retaining post
. See Figure 2 .
Remove the vacuum bag or blower chute from 
the unit as instructed in the OPERATION section 
to obtain access to flail screen. See Figure 18.
Figure 18
Remove the two self tapping screws securing the 
belt cover, and remove the belt cover. See Figure 
19
.
Figure 19
Remove self tapping screw on right side of unit 
that attaches to the flail screen. See Figure 20.
Figure 20
Remove hex screw on top of rear housing near 
mounting bracket and the flange lock nut that 
secures flail screen. See Figure 17.
Remove and clean the screen by scraping or 
washing with water. Reinstall the screen.
SHARPENING OR REPLACING CHIPPER 
BLADE
NOTE: 
When tipping the unit, empty the oil and fuel
tank and keep engine spark plug side up.
Disconnect and ground the spark plug wire to 
retaining post.
 See Figure 2 . 
Remove hose assembly and bag assembly.
Remove the three bolts holding the hose hanger 
bracket and chipper chute to the upper housing. 
See Figure 20.
Remove the front hubcaps, flange lock nuts, front 
wheels, and wave washers that attach to the pivot 
arm assemblies. See Figure 21.
Figure 21
Flail Screen
Flange Lock Nut
 
Hex Screw 
REAR VIEW
Belt
Cover
Self
Tapping
Screws
 Remove
 Self Tapping
 Screw
 Remove
 For Blade
Removal
Hubcap
Flange Lock Nut
Wave Washer
Shoulder
Screw
Bell Washer
Pivot Arm Assembly
Thrust Washer
Front Support
Brace & Lock Nut
Spring Lever
Height Adj. Bearing