Optional Accessory; Cleaning And Storage - Troy-Bild TB516 EC Manual Del Operador

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MAINTENANCE AND REPAIR INSTRUCTIONS

IDLE SPEED ADJUSTMENT

WARNING:

The blade 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. 19).

NOTE:

Careless adjustments can seriously damage your 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 and Stopping Instructions.

2. Release the throttle lever and let the engine idle. If the engine stops, insert a small Phillips in between the air filter

cover and the engine cover (Fig. 19). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed)

until the engine idles smoothly.

NOTE:

The blade should not rotate when the engine idles.

3. If the blade 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

This requires disassembly of the engine. If unsure or unqualified to perform this, take the unit to an authorized service

center.

NOTE:

Inspect the valve to rocker arm clearance with a feeler gauge per the maintenance schedule.

• 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 six (6) screws on the back of the engine cover with a Flat-head or T-

25 Torx screwdriver (Fig. 20).

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. 20).

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. 21). 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. This should be done by looking into the

spark plug hole. (Fig. 21)

•

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 .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 (Fig. 23).

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. 23).

•

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 Champion® #RDZ4H spark plug. The correct air gap is 0.025 in.

(0.635 mm). Remove the plug and check its condition per the maintenance schedule.

1. Stop the engine and allow it to cool. Remove the six (6) screws on the back of the

engine cover with a Flat-head or T-25 screwdriver (Fig. 20).

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 spark plug

electrodes. Grit in the engine could damage the cylinder.

4. Replace cracked, fouled or dirty spark plug. Set the air gap at 0.025 in. (0.635

mm) using a feeler gauge (Fig. 24).

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.

CLEANING AND STORAGE

WARNING:

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

cleaning or maintaining it.

CLEANING

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 30 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 edger after storage.

4. Change the oil, referring to Changing the Oil. Dispose of the old oil in accordance to 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.

ELECTRIC STARTER AND POWER START BIT™ FEATURES

Idle Adjustment Screw

This unit can be started with an optional Electric Starter or Power Start Bit™ (Items Sold Separately!). If choosing to

start the unit using one of these features or have questions, please contact your local retailer or call 1-800-828-5500 in

the U.S. (1-800-668-1238 in Canada) for more information and purchasing. You may also go to www.troybilt.com or

www.troybilt.ca.

Fig. 19

PROBLEM

THE ENGINE WILL NOT START

Empty fuel tank

View of the Rear

Engine Cover

Primer bulb wasn't pressed enough

Old fuel

Fouled spark plug

Screws

Cold weather start lever is in closed position

THE ENGINE WILL NOT IDLE

Air filter is plugged

Fig. 20

Old fuel

Screw

Improper idle speed

THE ENGINE WILL NOT ACCELERATE

Rocker

Arm Cover

Old fuel

Blade bound with dirt or grass

Spark

Plug Hole

Dirty air filter

Fig. 21

THE ENGINE LACKS POWER OR STALLS

Old fuel

Adjusting

Nuts

Fouled spark plug

INTAKE

NOTE:

For repairs beyond the minor adjustments listed above, locate your nearest authorized service center by

calling the Customer Support Department at 1-800-828-5500 (U.S.) or 1-800-668-1238 (Canada).

EXHAUST

Rocker

Arms

Fig. 22

Rocker Arm

Exhaust

Adjusting Nut

Feeler

UNIT*

Gauge

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

0.003–0.006 in.

Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 cc

(0.076–0.152 mm)

Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,800+ rpm

Idle Speed RPM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,800 - 4,200 rpm

Valve Stem

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

Fig. 23

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

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

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

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

Fuel Tank Capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 oz (414 ml)

Unit Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.7 lbs. (11.2 kg)

Cutting Depth (maximum) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.75 in. (44.5 mm)

0.025 in.

(0.635 mm)

* 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.

Fig. 24