Craftsman WEEDWACKER 316.791150 Operator's Manual page 7

Some line breakage will o ccur from:
• Entanglement with f oreign matter
• Normal line fatigue
Attempting tocut t hick, stalky
weeds
Forcing the line into objects
such a swalls o rfence p osts
DECORATIVE TRIMMING
Decorative trimming is
accomplished byremoving all
vegetation around trees, posts,
fences, etc. Fig. 10
Rotate the whole unit so that the cutting head is at a 30 ° angle to the ground
(Fig. 10).
MAINTENANCE SCHEDULE
_ ARNING"
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
the unit cannot start.
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
unsure about these procedures take the unit to Craftsman or other
qualified service dealer. Call 1-800-4-MY-HOME ®for more information.
NOTE: Maintenance, replacement, or repair of the emission control devices
and system may be performed by a Craftsman or other qualified
service dealer. Call 1-800-4-MY-HOME ® for more information.
FREQUENCY MAINTENANCE REQUIRED SEE
Before starting engine Fill fuel tank with fresh fuel Ip. 5
Every 10 hours Clean and re-oil air filter Ip. 7
Every 25 hours Check spark plug condition and gap Ip. 7
LINE REPLACEMENT
for Hassle-Free
TM
Cutting Head
_ ARNING:
Never use metal-reinforced line, wire, chain or
rope. These can break off and become dangerous projectiles.
Always use Craftsman@ Hassle-Free
TM
XTRA QUIET Spiral Line. Choose the
line size best suited for the job at hand. Red colored line is designed for
cutting grass and small weeds. Black colored line is designed for cutting
larger weeds and light brush.
NOTE: Before inserting new line
into the holes in the
cutting head,identify the
proper holes. Follow
directions as shown on
the line glide plate. Do
Not attempt to remove
the cutting head from the
unit when replacing line.
1. Remove the old line and line
glide plate from the cutting
head.
2. Clean entire surface of cutting
head. Note positions "A" and
"B" on the cutting head.
3. Reinstall line glide plate (Fig.
11). Align arrow with:
"A" when using medium (red) or
large (black) line, or
"B" when using lines with
diameters smaller than
medium (red)line
NOTE: Line glide plate must be
reinstalled in cutting head
before inserting new line.
Line Glide Plate
Arrow
Head
Fig. 11
Positioning
Tunnel
Fig. 12
4.
5.
6.
NOTE:
Insert both ends of your line
through the proper holes in
the side of the cutting head
(Fig. 12).
Pull the line and make sure the
line is against the hub and is
fully extended through the
positioning tunnels (Fig. 13).
Correctly installed line will be
the same length on both sides.
Do not rest the Hassle-
Free
TM
Cutting Head on
the ground while the unit
is running.
AiR FILTER MAINTENANCE
Cleaning the Air Filter
Clean the air filter every 10 hours
of operation. It is an important item
to maintain. 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
pulling out on the air filter
cover (Fig. 14).
2. Remove the air filter (Fig. 14).
3. Wash the filter in detergent and
water (Fig. 15). Rinse the filter
thoroughly and allow it to dry.
4. Apply enough clean SAE 30
motor oil to lightly coat the
filter (Fig. 16).
5. Squeeze the filter to spread
and remove excess oil (Fig. 17).
6. Replace the air filter into the
base plate (Fig. 14).
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. 14).
Line against
the hub
Fig. 13
Air Filter
Cover
\ Tab
;r
Fig. 14
6
Fig. 15
CARBURETOR ADJUSTMENT
NOTE: Careless adjustments can
seriously damage the
unit. Contact a Craftsman
or other qualified service
dealer to make carburetor
adjustments.
Call 1-800=4=MY-HOME e
for more information.
Fig. 16
REPLACING THE SPARK PLUG
Use a Champion RDJ8J or a
replacement part #753-06193
spark plug (or equivalent). Remove
the plug after every 25 hours of
operation and check its condition. Fig. 17
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.
_[_WARNING"
Do not sand blast, scrape or clean spark plug
I
electrodes. Grit in the engine could damage the cylinder. J
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. 18).