AIR FILTER MAINTENANCE
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).
2. Remove the air filter and the
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
(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.
SPECIFICATIONS
C
LE
A
NI
N
G
A
ND
S
TO
RA
G
E
CL
E
A
NING
U
se
a sma
l
l brush to c
lea
n off the outside of the
unit. Do
not use strong detergents. Household cleaners
that c
ontai
n aroma
tic oi
l
s such as pine a
nd l
e
mon, and sol
vents such as kerosene, can damage plastic
housi
ng or handle
. Wi
pe off any moistur
e
w
i
th a soft cl
oth.
STORA
GE
•
Neve
r store
a fuel
e
d uni
t w
he
re fumes may r
eac
h a
n ope
n fl
ame or spark.
•
All
ow
the e
ngine
to cool be
fore storing.
•
Stor
e
the uni
t locked up to pr
event unauthori
ze
d use
or damage.
•
Stor
e the uni
t in a
dry, we
l
l-ve
ntil
a
te
d a
rea
.
•
Stor
e the uni
t out of the
r
eac
h of chil
dren.
Shor
t Te
r
m Stor
a
ge
(1-2 w
ee
k
s
)
1.
Stor
e
the
uni
t in a
hori
z
onta
l posi
tion. If this i
s not possi
bl
e
, store the unit vertically with the engine at
the
top.
Lon
g-ter
m Stor
a
ge
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.
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 5 drops 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.
WA
RN
I
N
G
:
T
o
a
vo
i
d
se
r
i
o
us
p
e
r
so
na
l
i
nj
ur
y,
a
l
w
a
ys
turn
the
uni
t
o
f
f
a
nd
a
l
l
o
w
i
t
to
c
o
o
l
b
e
fo
re
yo
u
c
l
e
a
n
o
r
se
r
vi
c
e
i
t.
C
AUSE
A
CTION
The fuel is old (over 30 days) and/or improperly mixed Drain the fuel tank and add fresh, properly mixed fuel
F
ouled spark plug
R
eplace or clean the spark plug
The fuel is old (over 30 days) and/or improperly mixed Drain the fuel tank and add fresh, properly mixed fuel
C
utting head bound with grass
S
top the engine and clean the cutting head
Dirty air filter Clean or replace the air filter
Empty fuel tank Fill fuel tank with properly mixed fuel
T
he primer bulb wasn't pressed enough
P
ress the primer bulb 10 times or until fuel is visible
E
ngine is flooded
With the choke lever in position 3, squeeze the trigger
and pull the starter rope
T
he fuel is old (over 30 days) and/or improperly mixed
D
rain the fuel tank and add fresh, properly mixed fuel
Fouled spark plug Replace or clean the spark plug
C
utting head bound with grass
S
top the engine and clean cutting head
C
utting head out of line
R
efill with new line
I
nner reel bound up
R
ewind the inner reel
Cutting head dirty Clean inner reel and outer spool
Line welded Disassemble, remove the welded section and rewind
L
ine twisted when refilled
D
isassemble and rewind the line
N
ot enough line is exposed
P
ush the bump knob and pull out line until 4 inches (102 mm)
o
f line is outside of the cutting head
Oil, cleaner or lubricant in cutting head Clean and thoroughly dry the cutting head
Air filter is plugged Replace or clean the air filter
The fuel is old (over 30 days) and/or improperly mixed Drain the fuel tank and add fresh, properly mixed fuel
I
mproper idle speed
A
djust the idle speed
T
ROUBLESHOOTING
ENGINE WILL NOT START
E
NGINE WILL NOT IDLE
ENGINE WILL NOT ACCELERATE
IF FURTHER ASSISTANCE IS REQUIRED, CONTACT AN AUTHORIZED SERVICE DEALER.
E
NGINE LACKS POWER OR STALLS
CUTTING LINE ADVANCES UNCONTROLLABLY
C
UTTING HEAD WILL NOT ADVANCE LINE
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.
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.
OPTIONAL ACCESSORY
6
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
• 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.
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.
WARNING:
To avoid serious personal injury, always turn the unit off and allow it to cool before you
clean or service it.
WARNING:
T
he cutting attachment will spin during idle speed adjustments. Wear protective clothing
and observe all safety instructions to prevent serious personal injury.
WARNING:
Do not sand blast, scrape or clean electrodes. Grit in
t
he engine could damage the cylinder.
Fig. 36
0.025 in.
(0.635 mm.)
MAINTENANCE AND REPAIR INSTRUCTIONS
Fig. 37
Electric Start Feature
Fig. 34
Hooks
Air Filter
Cover
Cover
Screw Hole
Air Filter
Housing
Slots
Air Filter
Air Filter
Housing
Air Filter Cover
Cover
Screw
Idle Speed Screw
Fig. 35
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