Maintenance & Repair Instructions; Cleaning And Storage - Cub Cadet CC4175 Operator's Manual

OPERATING INSTRUCTIONS
• The life of your cutting line is dependent upon:
• Following the trimming techniques
• What vegetation is being cut
• Where vegetation is cut
For example, the line will wear faster when trimming against a foundation wall as
opposed to trimming around a tree.
DECORATIVE TRIMMING
Decorative trimming is accomplished by removing all vegetation around trees, posts,
fences and more.
Rotate the whole unit so that the cutting head is at a 30° angle to the ground (Fig. 14).
MAINTENANCE AND REPAIR INSTRUCTIONS
MAINTENANCE SCHEDULE
WARNING:
To prevent serious injury, never perform maintenance or repairs with unit running. Always
service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.
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 any non-road engine repair establishment, individual or authorized service dealer.
NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any
non-road engine repair establishment, individual or authorized service dealer.
FREQUENCY MAINTENANCE REQUIRED
Fill fuel tank with fresh fuel
Before starting engine
Check oil
Every 10 hours Clean and re-oil air filter
1st change at 10 hours Change oil
25 hours after Clean spark arrestor
10 hours on new engine Check rocker arm to valve clearance and adjust
Every 25 hours Check spark plug condition and gap
FIXED LINE INSTALLATION
WARNING:
Never use metal-reinforced line, wire, chain or rope. These can break off and become
dangerous projectiles.
Always use original equipment manufacturer 0.105
inch (2.67 mm) replacement line. Lines other than
those specified may make the engine overheat or fail.
To install the trimming line:
1. Insert each end of the replacement line into the
holes on either side of retention hook (Fig. 15).
2. Push the ends through until they stick out of
the sides of the head (Fig. 16).
3. Pull the ends through making sure that the
ends are of equal length and the middle of the
line is centered between the insertion holes
(Fig. 17).
4. If the ends are not of equal length, push the
longer end back through the head part way and
pull the shorter end to compensate. Repeat
until both ends are the same length.
5. Push the trimmer line until it lies flat against the
cutting head (Fig. 18). Make sure the two
lengths of cutting line are of equal length. If
they are not, adjust until they are.
WARNING:
Always use the correct line length when installing trimming line on the unit. The line may not
release properly if the line is too long.
CHECKING THE OIL LEVEL
WARNING:
To prevent extensive engine wear and damage to the unit, always maintain the proper oil
level in the crankcase. Never operate the unit with a low oil level.
The importance of checking and maintaining the
proper oil level in the crankcase cannot be
overemphasized. Check oil before each use:
1. Stop the engine and allow oil to drain into the
crankcase.
2. Place the unit on a flat, level surface to get a
proper oil level reading (Fig. 22).
3. Keep dirt, grass clippings and other debris out
of the engine. Clean the area around the
dipstick before removing it.
4. Remove the oil fill plug/dipstick and wipe off oil. Reinsert it all the way back in. (Fig. 20)
5. Remove the oil fill plug/ dipstick and check the oil level. Oil should be up to the top of the dipstick (Fig. 19).
6. If the level is low, add a small amount of oil to the oil fill hole and recheck (Fig. 20). Repeat this procedure until the
oil level reaches the top of the dipstick.
NOTE: Do not overfill the unit.
NOTE: Make sure the O-ring is in place on the oil fill plug/ dipstick when checking and changing the oil (Fig. 19).
CHANGING THE OIL
CAUTION:
Wear gloves to prevent injury when handling the unit.
For a new engine, change the oil after the first 10
hours of operation. Change the oil while the engine
is still warm. The oil will flow freely and carry away
more impurities.
1. Unplug spark plug boot to prevent accidental
starting.
2. Remove the oil fill plug/dipstick.
3. Pour the oil out of the oil fill hole and into a
container by tipping the unit to a vertical
position (Fig. 21). Allow ample time for
complete drainage.
4. Wipe up any oil residue on the unit and clean up any oil that may have spilled.
Dispose of the oil according to Federal, State and local regulations.
5. Refill the crankcase with 3.04 fl.oz. (90 ml) of SAE 30 SF, SG, SH oil.
NOTE: Use the bottle and spout saved from initial use to measure the correct
amount of oil. The top of the label on the bottle measures approximately
3.04 ounces (90 ml) (Fig. 23). Check the level with the dipstick. If the level
is low, add a small amount of oil and recheck. Do not overfill (Fig. 20).
6. Replace the oil fill plug/dipstick.
7. Reconnect the spark plug boot.
AIR FILTER MAINTENANCE
WARNING:
To avoid serious personal injury, always turn the unit off and allow it to cool before you
clean or service it.
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of
operation. It 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. Open the air filter cover. Push the tab on the left
side of the cover inward. Then pull the air filter
cover out and to the right (Fig. 24).
NOTE: It may be necessary to remove the fuel cap
to completely remove the air filter cover.
2. Remove the air filter (Fig. 24).
3. Wash the filter in detergent and water (Fig. 25).
Rinse the filter thoroughly and allow it to dry.
4. Apply enough clean SAE 30 motor oil to lightly
coat the filter (Fig. 26).
5. Squeeze the filter to spread and remove excess
oil (Fig. 27).
6. Replace the filter (Fig. 24).
NOTE: If the unit is operated without the air filter, you will VOID the warranty.
7. Reinstall the air filter cover. Position the hooks on the right side of the air filter cover into the slots at the right side
of the back plate (Fig. 24).
4
Fig. 14
Fig. 16
Fig. 15
Fig. 17 Fig. 18
Oil Fill Plug/ Dipstick
Oil Fill
Plug
O-Ring
Full
Add 1.4-
1.5 oz.
O-Ring
(41-44 ml)
Oil Fill
Hole
Fig. 19 Fig. 20
Fig. 21 Fig. 22
Fill Line
Fig. 23
Air Filter
Air Filter Cover
Tab
Fig. 24 Fig. 25
Fig. 26 Fig. 27
MAINTENANCE AND REPAIR INSTRUCTIONS
NOTE: It may be necessary to remove the fuel cap to completely replace the air filter cover.
8. Swing the cover to the left until the tab on the air filter cover snaps into place in the slot on the back plate (Fig. 24).
9. Replace the fuel cap if you have removed it.
CARBURETOR ADJUSTMENT
WARNING:
The cutting attachment may spin during idle speed adjustments. Wear protective clothing
and observe all safety instructions to prevent serious personal injury.
The idle speed of the engine is adjustable. An idle adjustment screw is between the air filter cover and the engine
starter housing (Fig. 28).
NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor
adjustments.
Check Fuel
Old fuel is usually the reason for improper unit performance. Drain and refill the tank with fresh 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. Release the throttle trigger and let the engine idle. If the engine stops, insert a
SEE
small Phillips screwdriver in between the Air Filter Cover and the Engine Cover (Fig. 28). Turn the idle speed screw
in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles smoothly.
p. 3
NOTE: The cutting attachment should not rotate when the engine idles.
p. 4
3. If the cutting attachment rotates when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at
p. 4
a time (as needed), to reduce idle speed.
p. 4
Checking the fuel, cleaning the air filter, and adjusting the idle speed should solve most engine problems. If not and all
p. 4
of the following are true:
p. 4 • the engine will not idle
p. 4 • the engine hesitates or stalls on acceleration
• there is a loss of engine power
Have the carburetor adjusted by an authorized service dealer.
ROCKER ARM CLEARANCE
WARNING:
To avoid serious personal injury, always turn the unit off and allow it to cool before you
clean or service it.
This service requires disassembly of the engine. If feeling unsure or unqualified to perform this service, take the unit to
an authorized service center.
NOTE: Inspect the valve to rocker arm
clearance with a feeler gauge after the
first 10 hours of operation and every 25
hours of operation.
• The engine must be cold when checking or
adjusting the valve clearance.
• This task should be performed inside, in a clean,
dust free area.
1. Remove the five (5) screws with a Flat-head or
T-20 Torx screwdriver and the one T-25 screw
(Fig. 29).
2. Disconnect the spark plug wire.
3. Clean dirt from around the spark plug. Remove
the spark plug from the cylinder head by
turning a 5/8 in. socket counterclockwise.
4. Remove the engine cover (Fig. 29).
5. Clean dirt from around the rocker arm cover.
Remove the screw holding the rocker arm
cover with a large flat blade screwdriver or Torx
T-25 bit (Fig. 30). Remove the rocker arm cover and gasket.
6. Pull the starter rope slowly to bring the piston to the top of its travel, (known as top dead center). Check that:
• The piston is at the top of its travel while looking in the spark plug hole (Fig. 30).
• Both rocker arms move freely, and both valves are closed.
If these statements are not true, repeat this step.
7. Slide the feeler gauge between the rocker arm and the valve return spring. Measure the clearance between the
valve stem and rocker arm (Fig. 31). Measure both the intake and exhaust valves.
The recommended clearance for both intake and exhaust is .003 – .006 in. (.076 – 0.152 mm). Use a standard
automotive .005 in. (0.127 mm) feeler gauge. The feeler gauge should slide between the rocker arm and valve stem
with a slight amount of resistance, without binding. See Figures 31 and 32.
8. If the clearance is not within specification:
a. Turn the adjusting nut using a 5/16 inch (8 mm) wrench or nut driver (Fig. 32).
• To increase clearance, turn the adjusting nut counterclockwise.
• To decrease clearance, turn the adjusting nut clockwise.
b. Recheck both clearances and adjust as necessary.
9. Reinstall the rocker arm cover using a new gasket. Torque the screw to 20–30 in•lb (2.2–3.4 N•m).
10. Check the spark plug and reinstall. See Replacing the Spark Plug.
11. Replace the spark plug wire.
12. Reinstall the engine cover. Check alignment of the cover before tightening the screws. Tighten screws.
REPLACING THE SPARK PLUG
Use a replacement part number 753-05784 or Champion #RDZ4H spark plug. The correct air gap is 0.025 in. (0.635 mm.).
Remove the plug after every 25 hours of operation and check its condition.
1. Stop the engine and allow it to cool. Remove the five (5) screws with a Flat-head or T-20 Torx screwdriver and the
one T-25 screw (Fig. 29).
2. Grasp the plug wire firmly and pull the cap from the spark plug.
WARNING: Do not sand blast, scrape or clean electrodes. Grit in the
engine could damage the cylinder.
3. Clean dirt from around the spark plug. Remove the spark plug from the cylinder
head by turning a 5/8 in. socket counterclockwise.
4. Replace cracked, fouled or dirty spark plug. Set the air gap at 0.025 in. (0.635 mm.)
using a feeler gauge (Fig. 33).
5. Install a correctly-gapped spark plug in the cylinder head. Turn the 5/8 in. socket
clockwise until snug.
If using a torque wrench torque to: 110-120 in.•lb. (12.3-13.5 N•m)
Do not over tighten.
SPARK ARRESTOR MAINTENANCE
1. Remove the rear engine cover. See Rocker Arm Clearance.
2. With a flat blade screwdriver or Torx T-20 bit and a T-25 bit, remove the screws
attaching the spark arrestor cover to the muffler (Fig. 34).
3. Pull the tab on the spark arrestor cover out of the muffler. Remove the spark
arrestor cover.
4. Remove the spark arrestor screen from the spark arrestor cover.
5. Clean the spark arrestor screen with a wire brush or replace it.
6. Reinstall the spark arrestor screen, spark arrestor cover and screws.
CLEANING
WARNING:
To avoid serious personal injury, always turn the unit off and allow it to cool before
cleaning or servicing it.
Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that contain
aromatic oils such as pine and lemon, and solvents such as kerosene, can damage plastic housing or handle. Wipe off
any moisture with a soft cloth.
STORAGE
• Never store the unit with fuel in the tank where fumes may reach an open flame or spark.
• Allow the engine to cool before storing.
• Lock up the unit to prevent unauthorized use or damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
LONG TERM STORAGE
1. Drain all gasoline from the gas tank into a container. Do not use gas that has been stored for more than 60 days.
Dispose of the old gasoline in accordance to Federal, State, and Local regulations.
2. Start the engine and allow it to run until it stalls. This ensures that all gasoline has been drained from the carburetor.
3. Allow the engine to cool. Remove the spark plug and put 5 drops of high quality motor oil into the cylinder. Pull the
starter rope slowly to distribute the oil. Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil from the cylinder before attempting to start the trimmer after
storage.
Idle Adjustment Screw
View Of The Rear Engine Cover
Rocker Arm
Cover
Screws Screws
Spark
Plug Hole
T-25 Screws
Fig. 29
Adjustment
Nuts
Rocker Intake
Arms
0.003–0.006 in.
(0.076–0.152 mm)
Exhaust
Fig. 31
0.025 in.
(0.635 mm.)
Fig. 33
Muffler
Spark Arrestor Screen
Slot
T-20 Screw
Fig. 28
Fig. 30
Feeler
Gauge
Valve Stem
Fig. 32
Diverter
T-25
Screw
Fig. 34