Machine Maintenance/Repairs; Lubrication; Check And Tighten Nuts And Bolts; Sharpening Or Replacing The Chipper Cutting Blade - Troy-Bilt 47260 Owner/Operator Manua

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WARNING
To Prevent Personal Injury:
• The chipper blade is very
sharp. Wear thick gloves and
handle blade with extreme
care.
• Do not operate machine
unless fan cover and chipper
chute are securely installed.
To Remove and
Install the Blade:
1. Shut off the engine, disconnect
the spark plug wire from the
spark plug, and make sure that all
moving parts have come to a com-
plete stop.
2. Remove the fan cover and the
shredder screen by following the
screen removal instructions on
Page 23.
3. The chipper blade (see A,
Figure 5-7) is attached to the left
side of the rotor assembly (B) by
three flat head socket screws (C)
and three nylon collar locknuts
(D). To remove the chipper blade,
first remove the rotor assembly, as
follows:
a.) Prevent the rotor assembly
from turning in a counterclockwise
direction by wedging a block of
wood between one or more of the
fan blades and the wall of the fan
chamber. Or, you can insert a
thick, hardwood dowel through the
slot below the blade and into the
chipper chute opening in the wall
of the chamber.
Over a period of time, the cutting
edge on the chipper cutting blade
(Figure 5-6) will dull. Sharpen or
replace the blade when the chipper
no longer cuts as efficiently as
when new.
• Discard a cracked or severely
nicked blade because it could break
apart and cause personal injury.
• Sharpen a blade that is dull or
that has only minor nicks. The
blade is made from tempered steel
and is extremely hard - do not at-
tempt to sharpen with a hand file.
We recommend that you take the
blade to a professional sharpening
service for proper sharpening. All
grinding must be done flat and uni-
form along the beveled edge only,
being sure to maintain the original
45
0
cutting angle.
• The width of a new blade mea-
sures 1-1/4 inches (see Figure 5-6).
Do not reuse the blade if the width
measures less than 1-1/8 inches as
this could affect the balance of the
rotor assembly. The rotor assembly
will cause excessive vibration if it
is unbalanced.
CAUTION
Before inspecting, cleaning
or servic i ng th e rna ch ine,
shut off engine, disconnect
spark plug wire, and make
sure that all moving parts
have come to a complete
stop.
Failure to follow these in-
structions can result in per-
sonal injury or property
damage.
With the exception of the engine,
the machine is lifetime lubricated.
You do not need to oil or grease
any parts of the machine.
CHECK AND TIGHTEN
NUTS AND BOLTS
Be sure that all nuts and bolts are
always tightened securely. With
the engine shut off and the spark
plug wire disconnected,
check the
nuts and bolts after every 10 oper-
ating hours. Refer to your Parts
Catalog for replacement nuts and
bolts information.
MACHINE MAINTENANCE/REPAIRS
SHARPENING OR REPLACING
THE CHIPPER CUTTING BLADE
LUBRICATION
Figure 5-6: Sharpen
chipper cutting blade
at a 4SO angle. The
width of a new blade
measures 1-1/4
inches. Do not reuse
blade if width is less
than 1-118 inches.
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