Cub Cadet SS270 Operator's Manual page 12

MAINTAINING THE AIR FILTER
WARNING:
To avoid serious personal injury, always stop
the engine and allow it to cool before cleaning or maintaining
the unit.
Failure to maintain the air filter can result in poor performance or can
cause permanent damage to the engine. Engine failure due to
improper air filter maintenance is not covered by the product warranty.
Cleaning the Air Filter
1. Open the air filter cover by unscrewing the cover screw (Fig. 14).
2. Remove the air filter from the air filter housing (Fig. 14).
3. Wash the air filter in detergent and water. Rinse the air filter
thoroughly and allow it to dry.
4. Lightly coat the air filter with clean SAE 30 oil.
5. Squeeze the air filter to spread and remove excess oil.
6. Reinstall the air filter in the air filter housing (Fig. 14).
NOTE: Operating the unit without the air filter and air filter cover will
VOID the warranty.
7. Insert the hooks on the air filter housing into the slots on the air
filter cover (Fig. 15).
8. Swing the air filter cover to the right and align the cover screw
with the cover screw hole (Fig. 15). Tighten the cover screw to
secure the air filter cover.
NOTE: Do not over tighten, as this may strip the screw.
ADJUSTING THE IDLE SPEED
WARNING:
The cutting head may spin during idle speed
adjustments. Wear protective clothing and observe all
safety instructions to prevent serious personal injury.
NOTE: Careless adjustments can seriously damage the unit. An
authorized service dealer should make carburetor adjustments.
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. Refer to Starting and Stopping.
2. Release the throttle control and let the engine idle.
• If the engine stops, use a small Phillips screwdriver to turn the
idle speed screw clockwise, 1/8 of a turn at a time (as needed)
until the engine idles smoothly (Fig. 16).
• If the engine idles too quickly, turn the idle speed screw
counterclockwise, 1/8 of a turn at a time (as needed) to reduce
the idle speed (Fig. 16).
NOTE: The cutting head should not spin when the engine idles. If it
does, reduce the idle speed until the cutting head stops moving.
Checking the fuel, cleaning the air filter, and adjusting the idle speed
should solve most engine problems. If not, and any of the following
conditions are true, take the unit to an authorized service dealer:
• the engine will not idle
• the engine hesitates or stalls on acceleration
• there is a loss of engine power
Air Filter Cover
Cover Screw
Slots
Air Filter
Cover
Idle Speed Screw
12
Air Filter
Air Filter
Housing
Fig. 14
Cover
Hooks
Screw Hole
Air Filter
Housing
Fig. 15
Fig. 16