Maintenance - Surtek DG725 Manual De Usuario

• Do not cut in dangerous cutting area.
• Use the tip of string to do the cutting; do not
force string head into uncut grass.
• Wire and picket fences cause extra string
wear, even breakage. Stone and brick walls,
curbs, and wood may wear string rapidly.
• Avoid trees and shrubs. Tree bark, wood
moldings, siding, and fence posts can easily be
damaged by the string.
GRASS DEFLECTOR LINE TRIMMING CUTOFF
BLADE
This trimmer is equipped with a line trimming
cut-off blade on the grass deflector.
For best cutting, ad-
vance string until it is
trimmed to length by
the cut-off blade. Ad-
vance string whenever
you hear the engine
running faster than
normal.
This will maintain best performance and keep
string long enough to advance properly.

MAINTENANCE

IMPORTANT: BEFORE USING THE TRIM-
MER, CARRY OUT REGULAR MAINTENANCE
OR CHANGING ACCESSORIES, READ THE "PE-
RIODIC MAINTENANCE CHART" ON PAGE 16.
WARNING: Use only original manufac-
turer's replacement parts, accessories and at-
tachments. Failure to do so can cause possible
injury, poor performance and may void your
warranty.
• You may make adjustments and repairs de-
scribed here. For other repairs, have the trim-
mer serviced by an authorized service dealer.
• Consequences of improper maintenance may
include excess carbon deposits resulting in loss
of performance and discharge of black oily
residue dripping from the muffler.
• Make sure all guards, straps, deflectors and
handles are properly and securely attached to
avoid the risk of personal injury.
REPLACING THE NYLON THREAD
1. Hold the string
head and unscrew the
spool retainer. Turn
counterclockwise.
14
Blade
Retainer
2. Remove the empty spool from the string
head. Keep the spring attached to the spool.
3. Remove the last of nylon threads.
4. Cut and hook the nylon inside the spool,
make sure the two strings are captured in the
slots opposite each other on the spool. Make
sure the ends of each string is extended ap-
proximately 152 mm (6 in.) beyond each slot.
5. Thread the strings
into the eyelets in the
string head. Carefully
push the spool into
the string head (gen-
tly pull the strings to
the outside if neces-
sary).
When the spool is positioned in the string
head, grasp the strings and pull sharply to re-
lease them from the slots in the spool.
6. Push down and turn the spool counterclock-
wise until it no longer turns. Hold the spool
down and rotate clockwise a small amount.
Release the spool. The spool should be locked
down in the string head. If not, hold down and
rotate until locked.
7. Make sure the string head and the spool re-
tainer are installed on the drive shaft by turn-
ing the retainer clockwise to tighten.
8. Pull the strings again to rotate the spool into
cutting position. Push the spool retainer down
while pulling on string(s) to manually advance
the string and to check for proper assembly of
the string head.
CLEANING THE EXHAUST PORT AND MUFFLER
Depending on the type of fuel used, the type
and amount of oil used, and/or your operat-
ing conditions, the exhaust port and muffler
may become blocked with carbon deposits. If
you notice a power loss with your gas powered
tool, a qualified service technician will need to
remove these deposits to restore performance.
SPARK PLUG
The spark plug must be cleaned or replaced
every 25 hours or yearly to ensure proper per-
formance of your product.
Cleaning Instructions:
• Disconnect the spark plug from the unit.
1. Spray the spark plug with a quality carbon
cleaner.