Cleaning And Storage; Optional Accessory; Troubleshooting Chart; Specifications - Troy-Bilt TB42 BC Manual Del Operador

MAINTENANCE AND REPAIR INSTRUCTIONS
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
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 by
unscrewing the cover screw (Fig.
34).
Cover
2. Remove the air filter and the
Screw
screen that sits behind it (Fig. 34).
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 air filter and the
screen that sits behind it (Fig. 34).
NOTE: Operating the unit without the
air filter will VOID the warranty.
7. Reinstall the air filter cover. Insert
the hooks on the air filter housing
into the slots on the air filter cover Air Filter
(Fig. 34).
8. Swing the air filter cover to the
right and align the cover screw
with the cover screw hole (Fig. 11). Tighten the cover screw to secure the air filter cover.
NOTE: Do not over tighten as this may strip the screw.
IDLE SPEED ADJUSTMENT
The idle speed of the engine is adjustable. An idle adjustment screw is between the air filter cover and
the engine starter housing (Fig. 35).
NOTE: Careless adjustments can seriously damage the unit. An authorized service dealer should make
carburetor adjustments.
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 run for one minute
to warm up. Refer to Starting and
Stopping Instructions.
2. Release the throttle trigger and let the
engine idle. If the engine stops, insert a
small Phillips screwdriver into the idle
adjustment screw (Fig. 35). Turn the idle
speed screw 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
WARNING:
The cutting attachment will spin during idle speed adjustments. Wear protective clothing
and observe all safety instructions to prevent serious personal injury.
• there is a loss of engine power
Have the carburetor adjusted by an authorized service dealer.
REPLACING THE SPARK PLUG
Use replacement #753-06193, a Champion RDJ7J 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.
WARNING:
Do not sand blast, scrape or clean electrodes. Grit in
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. 36).
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.
6
Air Filter
Housing
Air Filter
Air Filter Cover
Slots
Cover
Fig. 34
Idle Speed Screw
Fig. 35
0.025 in.
(0.635 mm.)
CAUSE
ENGINE WILL NOT START
Empty fuel tank
The primer bulb wasn't pressed enough
Engine is flooded
The fuel is old (over 30 days) and/or improperly mixed
Fouled spark plug
ENGINE WILL NOT IDLE
Air filter is plugged
The fuel is old (over 30 days) and/or improperly mixed
Improper idle speed
ENGINE WILL NOT ACCELERATE
The fuel is old (over 30 days) and/or improperly mixed
Hooks
Cutting head bound with grass
Cover
Dirty air filter
Screw Hole
ENGINE LACKS POWER OR STALLS
The fuel is old (over 30 days) and/or improperly mixed
Fouled spark plug
CUTTING HEAD WILL NOT ADVANCE LINE
Air Filter
Housing
Cutting head bound with grass
Cutting head out of line
Inner reel bound up
Cutting head dirty
Line welded
Line twisted when refilled
Not enough line is exposed
CUTTING LINE ADVANCES UNCONTROLLABLY
Oil, cleaner or lubricant in cutting head
IF FURTHER ASSISTANCE IS REQUIRED, CONTACT AN AUTHORIZED SERVICE DEALER.
ELECTRIC STARTER AND POWER START BIT™ FEATURES
This unit is designed to be started with an optional electric starter or Power
Start Bit™, which are 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.
Engine Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.10 in. (2.8 cm)
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 cc
Operating RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,800+ rpm
Idle Speed RPM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,800 - 3,400 rpm
Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 in. (0.635 mm)
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel/Oil Mixture
Fuel/Oil Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40:1
Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 fl. oz. (397 ml)
Approximate Unit Weight (without fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 13 lbs. (5 - 5.9 kg)
Cutting Mechanism. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Tooth Cutting Blade, Dual String Cutting Head
Shoulder Strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single Quick Snap
Trimming Line Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.105 in. (2.66 mm)
Cutting Path Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 in. (45.72 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.
Fig. 36
TROUBLESHOOTING
ACTION
Fill fuel tank with properly mixed fuel
Press the primer bulb 10 times or until fuel is visible
With the choke lever in position 3, squeeze the trigger
and pull the starter rope
Drain the fuel tank and add fresh, properly mixed fuel
Replace or clean the spark plug
Replace or clean the air filter
Drain the fuel tank and add fresh, properly mixed fuel
Adjust the idle speed
Drain the fuel tank and add fresh, properly mixed fuel
Stop the engine and clean the cutting head
Clean or replace the air filter
Drain the fuel tank and add fresh, properly mixed fuel
Replace or clean the spark plug
Stop the engine and clean cutting head
Refill with new line
Rewind the inner reel
Clean inner reel and outer spool
Disassemble, remove the welded section and rewind
Disassemble and rewind the line
Push the bump knob and pull out line until 4 inches (102 mm)
of line is outside of the cutting head
Clean and thoroughly dry the cutting head

OPTIONAL ACCESSORY

SPECIFICATIONS

Electric Start Feature
Fig. 37