Troy-Bilt TB65SS Operator's Manual page 4

2-cycle trimmer

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Operator's manual (64 pages)

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Operator's manual (64 pages)

Table Of Contents

Table of Contents

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MAINTENANCE AND REPAIR INSTRUCTIONS

5. Check the indexing teeth on the inner reel and

outer spool for wear (Fig. 11). If necessary,

remove burrs or replace the reel and spool.

NOTE:

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.

Single Line Installation

Go To Step 8 for SplitLine™ Installation:

6. Take approximately 20 feet (6 m) of new

trimming line, loop it into two equal lengths.

Insert each end of the line through one of the

two holes in the inner reel (Fig. 12). Pull the

line through the inner reel so that the loop is

as small as possible.

7. Wind the lines in tight even layers, onto the

reel (Fig. 13) Wind the line in the direction

indicated on the inner reel. Place an index

finger between the two lines to keep the lines

from overlapping. Do not overlap the ends of

the line. Proceed to step 12.

SplitLine™ Installation

8. Take approximately 10 feet (3 m) of new

trimming line. Insert one end of the line

through one of the two holes in the inner reel

(Fig. 14). Pull the line through the inner reel

until only about 4 inches is left out.

9. Insert the end of the line into the open hole in

the inner reel and pull the line tight to make

the loop as small as possible (Fig. 14).

10. Before winding, split the line back about 6 inches.

11. Wind the line in tight even layers in the direction indicated on the inner reel.

NOTE:

Failure to wind the line in the direction indicated will cause the cutting head to operate incorrectly.

12. Insert the ends of the line into the two holding slots (Fig. 15).

13. Insert the ends of the line through the eyelets in the outer spool and place inner reel with spring inside the outer

spool (Fig. 16). Push the inner reel and outer spool together.

NOTE:

The spring must be assembled on the inner reel before reassembling the cutting head.

14. Hold the inner reel in place and install the bump knob by turning clockwise. Tighten securely.

15. Grasp the ends and pull firmly to release the line from the holding slots in the reel.

INSTALLING A PREWOUND REEL

1. Hold the outer spool with one hand and unscrew the bump knob counterclockwise (Fig. 9). Inspect the bolt

inside the bump knob to make sure it moves freely. Replace the bump knob if damaged.

2. Remove the old inner reel from the outer spool (Fig. 10).

3. Remove the spring from the old inner reel (Fig. 10).

4. Place the spring in the new inner reel.

NOTE:

The spring must be assembled on the inner reel before reassembling the cutting head.

5. Insert the ends of the line through the eyelets in the outer spool (Fig. 16).

6. Place the new inner reel inside the outer spool. Push the inner reel and outer spool together. While holding the

inner reel and outer spool, grasp the ends and pull firmly to release the line from the holding slots in the spool.

7. Hold the inner reel in place and install the bump knob by turning clockwise. Tighten securely.

AIR FILTER MAINTENANCE

WARNING:

To avoid serious personal injury, always turn the unit

off and allow it to cool before cleaning or servicing it.

Removing the Air Filter/Muffler Cover

1. Place the blue choke lever in Position 2 (Fig. 17).

NOTE:

The blue choke lever must be in Position 2 to remove the air filter/ muffler cover.

2. Remove the four (4) screws securing the air filter/muffler cover (Fig. 17). Use a

T-20 Torx bit screwdriver.

3. Pull the cover from the engine. Do not force.

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 the air filter properly can result

in poor performance or can cause permanent

damage to the engine.

1. Remove air filter/muffler cover. Refer to

Removing the Air Filter/Muffler Cover.

2. Turn cover over and look inside to locate the

air filter. Remove the air filter from inside the

air filter/muffler cover (Fig. 18).

3. Wash the filter in detergent and water (Fig. 19).

Rinse the filter thoroughly. Squeeze out excess

water. Allow it to dry completely.

4. Apply enough clean SAE 30 oil to lightly coat

the filter (Fig. 20).

5. Squeeze the filter to spread and remove

excess oil (Fig. 21).

6. Replace the air filter inside the air filter/muffler cover (Fig. 18).

NOTE:

Operating the unit without the air filter and air filter/muffler cover assembly will VOID the warranty.

Reinstalling the Air Filter/Muffler Cover

1. Place the air filter/muffler cover over the back of the carburetor and muffler. Align the screw holes.

2. Insert the four (4) screws into the holes in the air filter/muffler cover (Fig. 17) and tighten. Do not over tighten.

SPARK ARRESTOR MAINTENANCE

1. Remove air filter/muffler cover. Refer to Removing the Air Filter/Muffler Cover.

2. Locate the muffler, but do not remove it. Find the screw on the bottom of the muffler (Fig. 22). Remove the screw

using either a torx #20 or flat blade screwdriver.

3. Carefully pry up the left side spark arrestor hood. Two tabs act as hinges on the

right side of the hood. Flip open the spark arrestor hood like a door and then

pull its tabs out of the muffler slots.

4. Using a small flat blade screwdriver, carefully pry the spark arrestor screen out

from the inside of the spark arrestor hood.

5. Clean the spark arrestor screen with a wire brush. Replace it if it is damaged, or

if unable to clean it thoroughly.

6. Reinstall the spark arrestor screen snugly back into the spark arrestor hood.

7. Reinstall the two hood tabs into the two muffler slots and flip the spark arrestor hood closed.

8. Replace the screw removed in Step 2 and tighten it securely.

9. Reinstall the air filter/muffler cover.

WARNING:

If the spark arrestor hood and spark arrestor screen are not tightened securely, they

could fall off causing damage to the unit and possible serious personal injury.

CARBURETOR ADJUSTMENT

The idle speed of the engine is adjustable through the air filter/muffler cover (Fig. 23).

NOTE:

Careless adjustments can seriously damage the unit. An authorized

service dealer should make carburetor adjustments.

Check Fuel Mixture

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 and change the air/fuel mixture. 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

WARNING:

The cutting head will spin during idle speed adjustments. Wear protective clothing and

observe all safety instructions to prevent serious personal injury.

If, after checking the fuel mixture 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 into the

hole in the air filter/muffler cover (Fig. 23). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as

needed) until the engine idles smoothly.

3. If the engine appears to be idling too fast, turn the idle speed screw counterclockwise 1/8 of a turn at a time (as

needed), to reduce idle speed.

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 an authorized service dealer.

Indexing Teeth

Fig. 11

Fig. 12

Fig. 13

Fig. 14

Index Teeth

Eyelets

Spring

Fig. 15

Fig. 16

Choke

Lever

Screws

Fig. 17

Air Filter

Inside Muffler Cover

Fig. 18

Fig. 19

Fig. 21

Fig. 20

Slots

Spark

Arrestor

Hood

Screw

Tabs

Fig. 22

Fig. 23

MAINTENANCE AND REPAIR INSTRUCTIONS

REPLACING THE SPARK PLUG

Use replacement #791-610311B, a Champion RDJ7Y spark plug, or equivalent. The correct air gap is 0.025 inch

(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. Grasp the plug wire firmly and pull it from

the spark plug.

2. Clean around the spark plug. Remove the spark plug from the cylinder head by

turning a 5/8-inch socket counterclockwise.

Loop

WARNING:

the engine could damage the cylinder.

3. Replace a cracked, fouled or dirty spark plug. Set the air gap at 0.025 in. (0.635 mm) using a feeler gauge (Fig. 24).

4. Install a correctly-gapped spark plug in the cylinder head. Tighten by turning the 5/8-inch 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

Loop

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

• Never store a fueled unit where fumes may reach an open flame or spark.

• Allow the engine to cool before storing.

• Store the unit locked up 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

If planning on storing the unit for an extended time, use the following storage procedure:

1. Drain all fuel from the fuel tank into a container with the same 2-cycle fuel mixture. Do not use fuel that has been

stored for more than 60 days. Dispose of the old fuel/oil mix in accordance to Federal, State and Local

regulations.

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

3. Allow the engine to cool. Remove the spark plug and put 1 oz. (30 ml) of any high quality motor oil or 2-cycle 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. Thoroughly clean the unit and inspect it for any loose or damaged parts. Repair or replace damaged parts and

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

ENGINE WILL NOT START

CAUSE

On/Off control in the OFF position

Empty fuel tank

Primer bulb wasn't pressed enough

Position 2

Engine is flooded

Old or improperly mixed fuel

Screws

Fouled spark plug

Plugged spark arrestor

ENGINE WILL NOT IDLE

CAUSE

Air filter is plugged

Old or improperly mixed fuel

Improper carburetor adjustment

ENGINE WILL NOT ACCELERATE

CAUSE

Old or improperly mixed fuel

Cutting head bound with grass

Dirty air filter

Plugged spark arrestor

ENGINE LACKS POWER OR STALLS WHEN CUTTING

CAUSE

Old or improperly mixed fuel

Fouled spark plug

Plugged spark arrestor

CUTTING HEAD WILL NOT ADVANCE LINE

CAUSE

Cutting head bound with grass

Cutting head out of line

Inner reel bound up

Cutting head dirty

Line welded

Engine

Muffler

Line twisted when refilled

Not enough line is exposed

CUTTING LINE ADVANCES UNCONTROLLABLY

CAUSE

Spark Arrestor

Oil, cleaner or lubricant in cutting head

Screen

If further assistance is required, contact an authorized service dealer.

ENGINE*

Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle

Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.25 in. (31.75 mm)

Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.9 cu in. (31 cc)

Idle Speed Screw

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

Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,600 – 3,600 rpm

Ignition Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic

Ignition Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rocker Switch

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

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel/Oil Mixture

Fuel/Oil Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40:1

Carburetor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diaphragm, All-Position

Starter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spring-Assist Starting™ Auto Rewind

Muffler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Baffled with Guard

Throttle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Spring Return

Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 fl.oz. (384 ml)

DRIVE SHAFT & CUTTING HEAD*

Drive Shaft Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steel Tube

Throttle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Finger-Tip Trigger

Total Approximate Unit Weight (without fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 lbs. (5.9 kg)

Cutting Mechanisms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Head™

Shoulder Strap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optional

Line Spool Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 in. (76.2 mm)

Trimming Line Diameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.080 in. (2.03 mm)

Cutting Path Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 in. (43.18 cm)

*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.

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

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

TROUBLESHOOTING

ACTION

Check to make sure the ON/Off control is in the ON position.

Fill fuel tank with properly mixed fuel

Press primer bulb fully and slowly 10 times

With blue choke lever in position 3, squeeze the trigger

and pull the starter rope

Drain fuel tank and add fresh fuel mixture