17
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 California/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.
Summary of Contents for RM4618
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