Idiomas disponibles
Idiomas disponibles
6. Pull the starter rope s lowly to
bring t he piston tothe topof
itstravel, (known as topdead
center). Check tosee if:
• The p iston isatthe top ofits
travel. This s hould be done b y
looking
into the spark plug h ole.
(Fig. 31)
Both r ocker arms move freely,
and both valves are closed
Ifthese s tatements
are not t rue,
repeat step 6 .
Screw_
Rocker Arm
Cover
Spark Plug
Home
Fig. 31
7.
Slide the feeler gauge between the rocker arm and the valve return spring.
Measure the clearance between the valve stem and rocker arm (Fig. 33).
Measure both the intake and exhaust valves.
The recommended
clearance for both intake and exhaust is .003 - .006 in.
(.076 - 0.152 rnrn}. Use a standard automotive
.005 in. (0.127 rnrn} feeler
gauge. The feeler gauge should slide between the rocker arm and valve stem
with a slight amount of resistance, without binding. See Figures 32 and 33.
Adjusting Nuts
EXHAUST
Fig. 32
INTAKE
8. If the clearance is not within
specification:
a.
Turn the adjusting nut using a
5/16 inch (8 mm) wrench or
nut driver (Fig. 33).
To increase clearance, turn
the adjusting nut
counterclockwise.
• To decrease clearance, turn
the adjusting nut clockwise.
b.
Recheck both clearances,
and adjust as necessary.
9.
Reinstall the rocker arm
cover using a new gasket.
Torque the screw to 20-30
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.
Rocker
Arms
Exhaust
Rocker Arm
Adj_s;ing ______.._
/
Feeler
Gauge
.i
0.003-0.005 in. L===LZ__'%_ r
(0.076-0.152 ram)
____
Valve
Stem
Fig. 33
Check alignment of the cover before tightening the screws. Tighten screws.
REPLACING
THE SPARK PLUG
Use a replacement
Champion
® #RDZ4H
spark
plug. The correct air gap
is 0.025 in. (0.635 turn). Remove the plug after every 25 hours of operation
and check its condition.
I
I
1.
Stop the engine and allow it
to cool. Remove the six (6)
screws on the back of the
engine cover with a Flat-
head or T-25 Torx
screwdriver (Fig. 30).
2.
Grasp the plug wire firmly
/
and pull the cap from the
0.025 in.
_
spark plug.
(0.635 ram)
t
3.
Clean dirt from around the
spark plug. Remove the spark
Fig. 34
plug from the cylinder head by turning a 5/8 in. socket counterclockwise.
m
]
I ,_
I WARNING:
Do not sandblast, scrape or clean spark plug
the
_
electrodes.
Grit in
engine could damage the cylinder.
3.
Pull the tab on the spark arrestor cover out of the muffler. Remove the
spark arrestor cover.
4.
Remove the spark arrestor screen from the spark arrestor cover.
5.
Clean the spark arrestor screen with a wire brush or replace it.
6.
Reinstall the spark arrestor screen, spark arrestor cover and screws.
CLEANING
_L_
ARNING:
To avoid serious personal injury, always turn the
unit off and allow it to cool before cleaning or maintaining 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.
STORAGE
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 30 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.
PLUG-IN POWER START AND POWER BIT START FEATURES
This unit is designed to be started
with an optional
Plug-In Power Start or
Power Bit Start that may be sold separately.
If choosing to start the unit
using one of these features or have questions
please contact your local
retailer or call 1-800-4-MY-HOME®,
for more information
and purchasing.
You may also go to www.craftsman.com.
4.
Replace cracked, fouled or dirty spark plug. Set the air gap at 0.025 in.
(0.635 turn} using a feeler gauge (Fig. 34).
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..ib.
(12.3-13.5 Norn}
Do not over-tighten.
SPARK ARRESTOR
MAINTENANCE
1.
Remove the rear engine
cover. See Rocker Arm
Clearance.
2.
With a flat blade screwdriver
or Torx T-20 bit and a T-25
bit, remove the screws
attaching the spark arrestor
cover to the muffler (Fig. 35).
Muffmer
Spark Arrestor
Cover
1"-25
Screw
Slot
1"-20Screw _
Fig. 35
Electric
Start
Feature
Item No.
Description
316.85951
.....................................
Plug-In Power Start
316.85952
........................................
Power Bit Start
9
