Maintenance - Craftsman C410 Operator's Manual

WARNING:
To avoid serious personal injury, always stop
the engine and allow it to cool before cleaning or maintaining
the unit. Never perform cleaning or maintenance while the
unit is running. Disconnect the spark plug wire to prevent
the unit from starting accidentally.
WARNING:
Wear protective clothing and observe all
safety instructions to prevent serious personal injury.
REPLACING THE TINES
WARNING:
To prevent serious personal injury, always
wear heavy gloves when handling the tines.
All tines should be replaced at the same time because they will wear
evenly through normal use. Work on one side at a time.
Preparing the Unit for Tine Removal
1. Stop the engine and allow it to cool. Grasp the spark plug wire
firmly and pull the cap from the spark plug.
2. Set the unit on a flat, level surface. Tip the unit back so that the
handlebar touches the ground and the engine is in a horizontal
position (Fig. 13).
NOTE: It may be necessary to wash dirt off the tines and tine shafts
before removing the tines.
Removing the Old Tines
1. Remove the cotter pin from the clevis pin (Fig. 11). Remove the
clevis pin from the double tine and tine shaft.
2. Slide the tines off of the tine shaft.
3. Repeat this process for the other side.
Installing the New Tines
1. Clean and oil the tine shaft.
2. Slide the new tines onto the tine shaft. The hubs must face
toward each other (Fig. 12). Install the single tine first. Then
install the double tine. Align the hole on the double tine with the
hole on the tine shaft (Fig. 12).
3. Insert a clevis pin through the aligned holes (Fig. 11). Insert a
cotter pin into the clevis pin.
4. Repeat this process for the other side.
5. Reconnect the spark plug wire.

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.
NOTE: Some maintenance procedures may require special tools or
skills. If you are unsure about these procedures, take the unit to
an authorized service dealer. Call 1-888-331-4569 for more
information.
NOTE: Maintenance, replacement, or repair of the emission control
devices and system may be performed by an authorized service
dealer. Call 1-888-331-4569 for more information.
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.
FREQUENCY
Every 10 hours
After the first
10 hours and
at 38 hours
Clevis Pin
Front View
Cotter Pin
Single
Tine
Tine Shaft
12
MAINTENANCE REQUIRED
• Clean and re-oil the air filter. Refer to
Maintaining the Air Filter.
• Change the oil. Refer to Changing the Oil.
• Have the rocker arm clearance checked by
an authorized service dealer.
• Check the spark plug condition and gap.
Refer to Maintaining the Spark Plug.
Fig. 11
Hubs
Holes
Fig. 12
Double Tine
Front View