Craftsman INCREDI.PULL 316.794000 Operator's Manual page 8

WARNING:
To prevent serious injury, never perform maintenance or I
repairs with unit running. Always service and repair a cool unit. Disconnect
I
the spark plug wire to ensure that the unit cannot start. See Replacing the
Spark Plug.
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 your unit to a Sears or other qualified
service dealer.
NOTE: Maintenance, replacement, or repair of the emission control devices and
system should only be performed by a Sears or other qualified service dealer.
FREQUENCY MAINTENANCE REQUIRED SEE
Before starting the
Fill the fuel tank with fresh fuel p 6
engine
Every 10 hours Clean and re-oil the air filter p 8
Every 25 hours Check the spark plug condition and gap p 9
AIR FILTER MAINTENANCE
Cleaning the Air Filter _-_
Clean and re-oil the air filter per the
Maintenance Schedule. ]t is an
important item to maintain. Failure to
maintain your air filter properly can
result in poor performance or can cause
permanent damage to your engine.
1. To open the air filter cover, push __
the locking tab on the right side
of the cover inward, then pull the
air filter cover out and to the left
(Fg. 15).
2. Remove the air filter (Fig. 16).
3. Wash the filter in detergent and
water (Fig. 17). Rinse the filter
thoroughly and allow it to dry.
4. Apply enough clean SAE 30
motor oil to lightly coat the filter
(Fig. 18).
5. Squeeze the filter to spread and
remove excess oil (Fig. 19).
6. Replace the filter (Fig. 16).
NOTE: If the unit is operated
without the air filter, you will
VOID the warranty.
7. Reinstall the air filter cover.
Position the slots on the left side
of the air filter cover onto the
tabs on the right side of the back
plate (Figs. 16).
8. Swing the cover to the right until
the tab on the air filter back plate
snaps into place in the slot on
the air filter cover (Fig. 20).
Air Filter
Cover
Locking
Tab
Fig, 15
Tabs
Fig, 16
Locking
Tab
Fig, 17
Fig, 19
Air Filter
Cover
Tab
Fig, 20
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable. An idle adjustment screw is between the air
filter cover and the engine cover (Fig. 21).
NOTE: Careless adjustments can seriously damage your unit. An authorized service
dealer should make carburetor adjustments.
Check Fuel
Old and/or improperly mixed fuel is usually the reason for improper unit performance.
Drain and refill the tank with fresh, properly-mixed fuel prior to making any adjustments.
Refer to Oil and Fuel Information.
Clean Air Filter
The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict
air flow. This is often mistaken for an out of adjustment carburetor. Check the condition of the
air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance.
Adjust Idle Speed Screw
If, after checking the fuel and cleaning
the air filter, the engine still will not idle,
adjust the idle speed screw as follows:
1. Start the engine and let it run at a_
high idle for a minute to warm
up. Refer to Starting/Stopping
Instructions.
2. Move the cruise control to the
SLOW position and let the engine
idle. If the engine stops, insert a
small Phillips screwdriver in
between the air filter cover and
the engine cover (Fig. 21). Turn
the idle speed screw in,
clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly.
Checking the fuel mixture, cleaning the air filter, and adjusting the idle speed should
solve most engine problems. If not and all of the following are true:
• the engine will not idle
• the engine hesitates or stalls on acceleration
• there is a loss of engine power
Have the carburetor adjusted by a Sears or other qualified dealer.
///I// Adjulsleent
_-_ _ Screw
Fig, 2t
Fig, 18
8