Cub Cadet GC145 Benutzerhandbuch - Seite 4

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MAINTENANCE AND REPAIR INSTRUCTIONS

TINE REMOVAL AND REPLACEMENT

WARNING:

To prevent serious personal injury, always wear heavy gloves when handling the tines.

All tines should be replaced at the same time as they will wear evenly through normal

use. Work on one side at a time.

1. Make sure the unit is off.

NOTE: It may be necessary to lay the cultivator back in a horizontal position on a flat

level surface with the upper handle touching the ground. It may also be necessary

to wash any dirt off the tines and shaft for ease of removal.

2. Remove the click pin from each end of the tine shaft. Slide the tines off of the

shaft (Fig. 13).

3. Clean and oil the shaft.

4. Slide on the new tines with the hubs facing each other (Fig. 13).

NOTE: Each tine has a convex side. Make sure that all of the convex sides are facing as shown in Fig. 13.

5. Secure the new tines to the shaft with click pins. It may be necessary to wash the dirt off the tines and shaft for

ease of removal.

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.

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. 15)

5. Remove the oil fill plug/dipstick and check the oil level. Oil should be up to the top of the dipstick (Fig. 14).

6. If the level is low, add a small amount of oil to the oil fill hole and recheck (Fig. 17). 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. 14).

CHANGING THE OIL

WARNING:

To avoid serious personal injury, always turn the unit off and allow it to cool before

cleaning or servicing it.

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. 16). 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 SJ 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. 18). Check the level with the dipstick. If the level is low, add a small

amount of oil and recheck. Do not overfill (Fig. 14).

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 cleaning or servicing it.

Cleaning the Air Filter

Failure to maintain the air filter properly can result in poor performance or can cause

permanent damage to the engine.

1. Open the air filter cover by unscrewing the cover screw (Fig. 19).

2. Remove the air filter (Fig. 19).

3. Wash the filter in detergent and water. Rinse the filter thoroughly and allow it to dry.

4. Apply enough clean SAE 30 motor oil to lightly coat the filter.

5. Squeeze the filter to spread and remove excess oil.

6. Replace the filter (Fig. 19).

NOTE: Operating the unit without the air filter, will VOID the warranty.

7. Reinstall the air filter cover. Position the hooks on the air filter cover with the slots on the air filter backplate (Fig. 19).

8. Swing the cover to the left and align the cover screw with the cover screw hole. Tighten the cover screw to secure the

air filter cover (Fig. 19).

NOTE: Do not over tighten as this may strip the screw.

IDLE SPEED ADJUSTMENT

WARNING:

The tines 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 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

small Phillips screwdriver between the air filter cover and the engine cover (Fig.

20). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed)

until the engine idles smoothly.

NOTE: The tines should not rotate when the engine idles.

3. If the tines rotates when the engine idles, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as

needed), to reduce idle speed.

Checking the fuel, 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 an authorized service dealer.

ROCKER ARM CLEARANCE

WARNING:

To avoid serious personal injury, always turn the unit off and allow it to cool before

cleaning or servicing 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.

• 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. 21).

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. 21).

NOTE: To ease engine cover removal, pull the starter rope out a little to give some slack.

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. 22). Remove the rocker arm cover and gasket.

Hubs

Convex

Side

Direction Of Convex Sides

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. 14

Fig. 16

Fill Line

Cover

Hooks

Screw Hole

Slots

Air Filter

View Of The Rear Engine Cover

Rocker Arm

Cover

Screws

Spark

Plug Hole

T-25 Screws

Fig. 21

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. 22).

• 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. 23). Measure

both the intake and exhaust valves.

The recommended clearance for both intake and exhaust is 0.003 – 0.006 in. (0.076 –

0.152 mm). Use a standard automotive 0.005 in. (0.127 mm) feeler gauge. The feeler

gauge should slide between the rocker arm and valve stem with a slight amount of

Click

resistance, without binding. See Figs. 23 and 24.

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. 24).

Fig. 13

• 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 753-05758 or a Champion® RDZ4H spark plug.

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. 21).

2. Grasp the plug wire firmly and pull the cap from the spark plug.

3. Clean dirt from around the spark plug. Remove the spark plug from the cylinder

head by turning a 5/8 in. socket counterclockwise.

WARNING: Do not sand blast, scrape or clean electrodes. Grit in the

engine could damage the cylinder.

Fig. 15

4. Replace cracked, fouled or dirty spark plug. Set the air gap at 0.025 in. (0.635 mm) using a feeler gauge (Fig. 25).

5. Install a correctly-gapped spark plug in the cylinder head. Turn the 5/8 in. socket clockwise until snug.

NOTE: If using a torque wrench torque to: 110-120 in.•lb. (12.3-13.5 N•m) Do not over tighten.

CLEANING

WARNING:

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

Fig. 17

• 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. Remove the fuel cap, tip the unit and drain the fuel into an approved container.

NOTE: Do not use gasoline that has been stored for more than 30 days. Dispose of old gasoline in accordance with

federal, state and local regulations.

Fig. 18

2. Start the engine and allow it to run until it stalls. This ensures that all gasoline has been drained from the carburetor.

Air Filter Cover

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 unit after storage.

4. Change the oil. Refer to Changing the Oil. Dispose of the old oil in accordance with federal, state and local regulations.

5. Thoroughly clean the unit and inspect for any loose or damaged parts. Repair or replace damaged parts and

tighten loose screws, nuts or bolts. The unit is ready for storage.

Cover Screw

Fig. 19

CAUSE

ENGINE WILL NOT START

Empty fuel tank

Primer bulb wasn't pressed enough

Old fuel (over 30 days)

Fouled spark plug

ENGINE WILL NOT IDLE

Air filter is plugged

Old fuel (over 30 days)

Improper idle speed

ENGINE WILL NOT ACCELERATE

Old fuel (over 30 days)

Idle Adjustment Screw

Fig. 20

Cultivator tines bound with dirt or grass

Dirty air filter

ENGINE LACKS POWER OR STALLS

Old fuel (over 30 days)

Fouled spark plug

IF FURTHER ASSISTANCE IS REQUIRED, CONTACT AN AUTHORIZED SERVICE DEALER.

Engine Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 4-Cycle

Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 cu. in. (26.2 cc)

Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,200+ rpm

Idle Speed RPM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,800 - 3,600 rpm

Valve clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.003–0.006 in. (0.076–0.152 mm)

Spark Plug Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 inch (0.635 mm)

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAE 30 Oil

Fig. 22

Crankcase Oil Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.04 oz (90 ml)

Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unleaded

Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 oz (532 ml)

Cultivating Path Width (Maximum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 inches (22.86 cm)

Cultivating Depth (Maximum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 inches (15.24 cm)

Approximate Weight (no fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 lb. (11.5 kg)

*All specifications are based on the latest product information available at the time of printing. We reserve the right to

make changes at any time without notice.

MAINTENANCE AND REPAIR INSTRUCTIONS

CLEANING AND STORAGE

To avoid serious personal injury, always turn the unit off and allow it to cool before

TROUBLESHOOTING

ACTION

Fill fuel tank with fuel

Press the primer bulb 10 times or until fuel is visible

Drain fuel tank and add fresh fuel

Replace or clean the spark plug

Replace or clean the air filter

Drain fuel tank and add fresh fuel

Adjust the idle speed

Drain fuel tank and add fresh fuel

Stop the engine, clean and remove any debris binding the

tines

Clean or replace the air filter

Drain fuel tank and add fresh fuel

Replace or clean the spark plug

SPECIFICATIONS*

Adjustment

Nuts

Rocker

Intake

Arms

Exhaust

Fig. 23

Adjusting Nut

Rocker Arm

Feeler

Gauge

0.003–0.006 in.

(0.076–0.152 mm)

Valve Stem

Fig. 24

0.025 in.

(0.635 mm.)

Fig. 25