Poulan Pro PP4000C - Manual (Page 9)

9
MAINTENANCE
WARNING: Always stop unit and dis-
connect spark plug wire before performing
maintenance.
CHECK FOR DAMAGED OR
WORN PARTS
Contact an authorized service dealer for re-
placement of damaged or worn parts.
S
Blade Shield -- Discontinue use of brushcut-
ter attachment if shield is damaged.
CHECK FOR LOOSE FASTENERS
AND PARTS
S Blade nut
S Fasteners
INSPECT AND CLEAN UNIT
AND DECALS
S After each use, inspect complete unit for
loose or damaged parts. Clean the unit and
decals using a damp cloth with a mild deter-
gent.
S Wipe off unit with a clean dry cloth.
BLADE MAINTENANCE
WARNING:
The blade will continue to
spin after the engine stops or after the throttle
trigger has been released. To avoid serious
injury, make sure the blade has stopped
coasting and disconnect the spark plug before
performing work on the blade.
WARNING:
Always replace a blade
that is bent, warped, cracked, broken, or dam-
aged in any other way. Never attempt to
straighten and reuse a damaged blade. Use
only specified replacement blade. Wear pro-
tective gloves when handling or performing
maintenance on the blade to help avoid injury.
S
Check blade for flatness periodically. Lay
the blade on a flat surface to inspect for flat-
ness. Throw away a blade that is not flat.
SERVICE AND ADJUSTMENTS
BLADE REPLACEMENT
WARNING: The blade will continue to
spin after the engine stops or after the throttle
trigger has been released. To avoid serious
injury, make sure the blade has stopped
coasting and disconnect the spark plug before
performing work on the blade.
WARNING: Wear protective gloves
when handling or performing maintenance on
the blade to avoid injury. The blade is sharp and
can cut you even when it is not moving.
WARNING: Do not use any blades, or
fastening hardware other than the washers and
nuts shown in the following illustration. These
parts must be provided by Poulan PRO and
installed as shown. Failure to use proper parts
can cause the blade to fly off and seriously hurt
you or others.
1. To remove the blade, align hole in the dust
cup with the hole in the side of the gear-
box by rotating the blade.
2. Insert a small screwdriver into aligned
holes. This will keep the shaft from turn-
ing while loosening the blade nut.
3. While holding the screwdriver in position,
remove blade nut by turning clockwise as
you are facing the nut.
4. Remove both washers and the blade
from the blade shaft. Leave the dust cup
on the gearbox.
5. Install new blade and retaining washer onto
the threaded shaft extending from the gear-
box (blade must be between the dust cup
and the retaining washer). Make sure the
raised part of the retaining washer is facing
the gearbox, and the raised area fits into the
hole in the center of the blade.
Shield
Blade Retaining
washer
Aligned holes
Cupped
washer
Nut
Threaded shaft
Gearbox
Dust cup
6. Place the cupped washer onto the shaft.
Make sure the cupped side of the washer
is toward the blade.
7. Install blade nut by threading onto the shaft
counterclockwise as you are facing the nut.
NOTE: Make sure all parts are in place as illus-
trated, and the blade is sandwiched between the
dust cup and the retaining washer. There should
be no space between the blade and the dust cup
or the retaining washer.
8. Tighten blade nut firmly with a wrench
while holding screwdriver in position.
9. Remove the screwdriver.
10. Turn blade by hand. If the blade binds
against the shield, or appears to be un-
even, the blade is not centered, and you
must reinstall.