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AiR FILTER MAINTENANCE
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WARNING:
To avoid serious personal injury, always turn the unit off I
and allow it to cool before cleaning or maintaining it.
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Failure to maintain the air filter properly can result in poor performance or can
cause permanent damage to the engine.
1.
Open the air filter cover by
pressing the lock tab in and
Air Filter
Cover
pulling out on the air filter
\
I1
cover (Fig. 26).
2.
Remove the air filter (Fig. 26).
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.
Fig. 26
6.
Replace the air filter into the base plate (Fig. 26).
NOTE:
Operating the unit without the air filter WILL VOID the warranty.
7.
Reinstall the air filter cover. Position the two small tabs on the air filter
cover into the two slots in the base plate and press the air filter cover
down, making sure to align the lock tab with the lock tab slot, until it
snaps into place (Fig. 26).
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. 27).
NOTE:
Careless adjustments
can seriously damage the unit. Aside from
idle speed, only a Sears or other qualified 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/Stopping
Instructions.
Release the throttle trigger and
let the engine idle. If the engine
stops, insert a small phillips
screwdriver in between the Air
Filter Cover and the Engine
Cover (Fig. 27). Turn the idle
speed screw in, clockwise, 1/8
of a turn at a time (as needed)
until the engine idles smoothly.
Fig. 27
mdmeSpeed
Screw
2.
NOTE:
The cutting attachment
should not rotate when the engine idles.
3.
If the cutting attachment
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 any of the following are true have the
unit serviced by a Sears or other qualified service dealer:
the engine will not idle
the engine hesitates or stalls on acceleration
there is a loss of engine power
Fig. 28
REPLACING
THE SPARK PLUG
Use a Champion
RDJ7J or a
replacement
part #753-06193
spark plug (or equivalent).
1.
Stop the engine and allow it
to cool. Grasp the plug boot
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.
m
i
WARNI NG:
Do not sand blast, scrape or clean spark plug
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 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.
5.
Reattach the plug boot.
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 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.
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
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 trimmer 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.
PLUG=IN POWER START AND POWER BiT START FEATURES
This unit can be started with an optional
I
Plug-In Power Start or Power Bit Start (Plug-
In Power Start included / Power Bit Start
sold separately).
If choosing to start the unit
using one of these features or have questions,
please contact your local Craftsman
retailer or_
call 1=800=4=MY=HOME® for more
information
and purchasing. You may also go
to www.craftsman.com.
Power
Start
Feature
item
No.
Description
316.85951
.....................................
Plug-In Power Start
316.85952
........................................
Power Bit Start
9
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