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b. Recheck bothclearances,
andadjust asnecessary.
9. Reinstall therocker arm cover u sing anew gasket. Torque the
screw to20-30
inolb (2.2-3.4 Nora).
10. Check the spark plug and reinstall. See Replacing the Spark Plug.
11. Replace the spark plug wire.
12. Reinstall the engine cover. Check alignment of the cover before
tightening the screws. Tighten screws.
REPLACING THE SPARK PLUG
Use a replacement Champion ® RDZ4A spark plug. The correct air
gap is 0.025 in. (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. Remove the two (2) screws
on back of the engine cover and the one on the front of the
engine cover with a Flat-head or T-25 Torx screwdriver (Fig. 40).
2.
Grasp the plug wire firmly and pull the cap from the spark plug.
,A
I WARNING:
Do not sand blast, scrape or clean spark plug
I_l
e ectrodes. Gr t n the eng ne cou d damage the cy nder.
|
]
3.
4.
Clean dirt from around
the spark plug. Remove
the spark plug from the
cylinder head by turning a
5/8 in. socket
counterclockwise.
Replace cracked, fouled
or dirty spark plug. Set
the air gap at 0.025 in.
(0.635 ram) using a feeler
gauge (Fig. 45).
0.025 in.
(0.635 ram}
t
Fig. 45
5.
Install a correctly-gapped
spark plug in the cylinder head. Turn
the 5/8 in. 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.
SPARK ARRESTOR
MAINTENANCE
1.
Remove the engine cover. See Rocker Arm Clearance.
2.
With a flat blade screwdriver Muffler
Spark Arrestor
3.
4.
or Torx T-20 bit and a T-25
bit, remove the screws
attaching the cover to the
muffler (Fig. 46).
Pull the tab on the cover
out of the muffler and
remove the cover.
Remove the spark arrestor
screen from the cover.
Cover
/
T%
Slot
1"=20 Screw_
qD
Fig. 46
5.
Clean the spark arrestor screen with a wire brush or replace it.
6.
Reinstall the spark arrestor screen, cover and screw.
CLEANING
_,
I WARNING:
To avoid serious personal injury, always
I _
I turn the unit off and allow it to cool before you clean or
J
_
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 pine and lemon, and solvents such as kerosene, can damage
plastic housing or handle. Wipe off any moisture with a soft cloth.
STO RAG E
Never store the unit with fuel in the tank where fumes may reach
an open flame or spark.
Allow the engine to cool before storing.
Lock up the unit 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
1.
Drain all gasoline from the gas tank into a container. Do not use gas
that has been stored for more than 60 days. Dispose of the old
gasoline in accordance to Federal, State, and Local regulations.
2.
Start the engine and allow it to run until it stalls. This ensures
that all gasoline 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.
Change the oil, referring to Changing the Oil. Dispose of the old
oil in accordance to Federal, State and Local regulations.
5.
Thoroughly clean the unit and inspect for any loose or damaged
parts. Repair or replace damaged parts and tighten loose
screws, nuts or bolts. The unit is ready for storage.
TRANSPORTING
Allow the engine to cool before transporting.
Secure the unit while transporting.
Drain the gas tank before transporting.
Tighten gas cap before transporting.
ELECTRIC START FEATURE
This unit is designed to be started with an electric starter, that may
be purchased through www.sears.com/craftsman.
If choosing to
start the unit using the electric start feature please refer to the
Electric Starter operator's manual for correct starting procedure. If
you have any question
please call 1-800-235-5878.
Electric Start Feature
item No.
Description
316.85951 .........................................
Electric Starter
11
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