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MAINTENANCE
SCHEDULE
_[_
WARNING:
To prevent serious injury, never perform
maintenance
or repairs with unit running. Always
service and repair a cool unit• Disconnect
the spark plug wire to ensure that time unit cannot start•
I
Perform these required maintenance
procedures at the frequency
stated in the table• These procedures
should also be
a part of any seasonal tune-up.
NOTE:
Some maintenance procedures may require special tools or skills• If you are unsure about these procedures
take your unit to any non-road engine repair establishment,
individual or authorized service dealer•
NOTE:
Maintenance,
replacement,
or repair of the emission control devices and system may be performed by any
non-road engine repair establishment,
individual or authorized service dealer•
FREQUENCY
MAINTENANCE
REQUIRED
SEE
Before starting engine
Fill fuel tank with fresh fuel
p. 3
Every 10 hours
Clean and re-oil air filter
p. 4
Every 25 hours
Check spark plug condition
and gap
p. 4
LINE INSTALLATION
[_
ARNING:
Never use metal-reinforced
line, wire, chain or rope. These can break off and become
dangerous
projectiles.
This section covers both SplitLine® and standard
single line installation•
Always use original equipment manufacturer 0.095 in.
(2.41 ram} replacement line. Line other than the
specified may make the engine overheat or fail•
There are two methods to replace the trimming line:
Wind the inner reel with new line
Install a prewound
inner reel
Removing
the Existing
Inner Reel
1. Hold the outer spool with one hand and unscrew
the bump knob counterclockwise
(Fig. 13).
Inspect the bolt inside the bump knob to make
sure it moves freely. Replace the bump knob if
damaged.
Outer
Spool
inner
Reel
Indexing
Teeth
2. Remove the inner reel from the outer spool (Fig. 14). "_,
3. Remove spring from the inner reel (Fig. 14).
4. Use a clean cloth to clean the the inner reel,
spring, shaft, and inner surface of the outer spool.
5. Check the indexing teeth on the inner reel and
outer spool for wear (Fig. 15). 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 SpfitLine® Installation:
6. Take approximately
20 feet (6 m) of new
trimming
line, loop it into two equal lengths•
k_ _-.
X
.
Insert each end of the line through one of the
.
J
) _r_
two holes in the inner reel (Fig. 16). Pull the line _
_J
through the inner reel so that the loop is as
.
f'__!/_._
small as possible.
"_-_
7. Wind the lines in tight even layers onto the reel
t\\ _
(Fig. 17). Wind the line in the direction
indicated
\_X_£,_
on the inner reel. Place an index finger between
_,_
the two lines to stop the lines from overlapping• "_Fk
Do not overlap the ends of the line. Proceed to
step 12.
SplitLine®
Installation
Bump
Knob
Bolt
Fig. 13
Fig. 15
Fig. 14
Loop
Fig. 16
Loop
Fk . 17
Fig. 18
lndex
Teeth
Eyelets
_(__
• 19
Fig. 20
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. 18). 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. 18).
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. 19).
13. Insert or slide the ends of the line through or into the eyelets in the outer spool and place inner reel with spring
inside the outer spool (Fig. 20). Push the inner reel and outer spool together•
NOTE:
The spring must be assembled on the inner reel before reassembling
the cutting head.
14. 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•
15. Hold the inner reel in place and install the bump knob by turning clockwise• Tighten securely•
INSTALLING
A PREWOUND
REEL
1. Hold the outer spool with one hand and unscrew the bump knob counterclockwise
(Fig. 13). 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. 14).
3. Remove the spring from the old inner reel (Fig. 14).
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 or slide the ends of the line through or into the eyelets in the outer spool (Fig. 20).
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
_L_
ARNING:
To avoid serious personal injury, always turn time unit off and allow it to cool before you
clean or service it.
Removing
the Air Filter/Muffler
Cover
Choke
1. Place the choke lever in Position 2.
Lever
2. Remove the four (4) screws securing the air
filter/muffler
cover (Fig. 21).
3. Pull the cover from the engine. Do not force.
Screws
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 your air filter properly can result
in poor performance
or can cause permanent
damage to your 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. 22).
3. Wash the filter in detergent
and water (Fig. 23).
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. 24).
5. Squeeze the filter to spread and remove excess oil (Fig. 25).
6. Replace the air filter inside the air filter/muffler
cover (Fig. 22).
Fig. 21
Position
2
Screws
Inside
Muffler
Cover
Fig. 22
Fig. 23
Fig. 24
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. 21) 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. 26). 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.
Fig.
25
S
ark
Slots
Engine
P
\.
Muffler
A
Arrestor
_
\,
S_
S!ark
Arrestor
crew
Tabs
Screen
Fig.
26
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•
--
i
_[_
ARNING:
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• An idle adjustment
screw is between the air filter cover and the engine
starter housing (Fig. 27).
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
--
1
_L_
ARNING:
The cutting attachment
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 run for one minute to warm up. Refer to Starting/Stopping
IdleAdjustment Screw
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. 27). 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
Fig. 27
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 #791-610311 B, a Champion RDJ7Y spark plug, or equivalent• The correct air gap is 0.025 inch (0.635 ram}.
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•
i
_L_
ARNING:
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 ram)
using a feeler gauge (Fig. 28).
4. Install a correctly-gapped
spark plug in the cylinder head. Tighten by turning the
0.025in.
5/8-inch socket clockwise
until snug•
(0•635ram.)
If using a torque wrench torque to: 110-120 in..Ib.
(12.3-13.5
N.m)
Do not over tighten.
Fig.28
CLEANING
--
i
_[_
ARNING:
To avoid serious
personal
injury, always
turn the unit off and allow it to cool before you
clean
or service
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 pins 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•
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