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16
Fig. 22
PRUNING
Pruning is the process of cutting limbs from a living tree.
1. Make the first cut approximately 6 inches (15 cm) from the tree
trunk. Cut upward, from the underside of the limb. Use the top of
the guide bar to make this cut. Cut a third of the way through the
diameter of the limb (Fig. 22).
2. Make the second cut 2 - 4 inches (5 - 10 cm) farther out on the
limb. Cut downward, from the top of the limb. Use the bottom of
the guide bar to make this cut. Cut completely through the limb
(Fig. 22).
3. Make the third cut as close to the tree trunk as possible. Cut
upward, from the underside of the limb stub. Use the top of the
guide bar to make this cut. Cut a third of the way through the
diameter of the limb (Fig. 22).
4. Make the fourth cut directly above the third cut. Cut downward,
from the top of the limb stub. Use the bottom of the guide bar to
make this cut. Cut completely through the limb stub to meet the
third cut (Fig. 22). This will remove the limb stub.
Third Cut
First Cut
Second Cut
Fourth Cut
WARNING:
Do not cut above shoulder height. Use a
pole saw to cut limbs above shoulder height or hire a
professional. Do not operate the unit in a tree or on a
ladder unless specifically trained to do so.
WARNING:
Falling branches can cause serious injury.
Always wear appropriate head protection. Plan an escape
route away from falling limbs. Do not position any body
parts directly below the limb when cutting.
MAINTENANCE
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the frequency
stated in the table. These procedures should also be a part of any
seasonal tune-up.
All service, other than the maintenance procedures described in this
manual, should be performed by an authorized service dealer.
NOTE: Some maintenance procedures may require special tools or
skills. If you are unsure about these procedures, take the unit to
an MTD authorized service dealer.
NOTE: Maintenance, replacement, or repair of the emission control
devices and system may be performed by an MTD authorized
service dealer.
NOTE: Please read the EPA statement that came with the unit for a
complete listing of terms and coverage for the emissions control
devices, such as the spark arrestor, muffler, carburetor, etc.
WARNING:
To prevent serious injury, never perform
maintenance or repairs while the unit is running. Always
allow the unit to cool before servicing or repairing the unit.
Disconnect the spark plug wire to prevent the unit from
starting accidentally.
FREQUENCY MAINTENANCE REQUIRED
Before each
use
• Check for loose screws, nuts or bolts
(tighten as needed)
• Check for damaged or worn parts*
• Check the saw chain sharpness. Refer to
Sharpening the Saw Chain.
• Test the chain brake*. Refer to Testing the
Chain Brake.
• Check the chain tension (adjust as needed).
Refer to Adjusting the Chain Tension.
• Fill the chain oil reservoir (refill frequently).
Refer to Adding Bar and Chain Oil.
• Fill the fuel tank with fresh, properly mixed
fuel. Refer to the Oil and Fuel section.
• Clean the air filter. Refer to Maintaining the
Air Filter.
After each use • Clean the unit and inspect decals. Refer to
Cleaning in the Cleaning and Storage
section.
Every 10 hours • Check the spark plug condition and gap.
Refer to Maintaining the Spark Plug.
• Clean the guide bar groove and oil
passages. Lubricate the sprocket tip. Refer
to Maintaining the Guide Bar.
• Clean the cylinder fins. Refer to Cleaning in
the Cleaning and Storage section.
CUSTOMER RESPONSIBILITY
* If maintenance or replacement is required, have the unit serviced
by an MTD authorized service dealer.
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