Jonsered HT 2121 Trimmer User Manual


 
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STARTING A FLOODED ENGINE
Flooded engines can be started by placing
the ON/OFF switch in the ONposition and the
choke lever in the OFF CHOKE position and
engaging the throttle lock as directed in the
STARTING A COLD E NGINE section; then,
pull the rope to clear the engine of excess
fuel. Starting could require pulling the starter
rope many times depending on how badly the
unit is flooded. If the unit still doesn’t start, refer
to the TROUBL ESHOOTING TABLE.
SERVICE
WARNING:
Ensure ON/OFF switch
is in the OFF position and disconnect the
spark plug before performing maintenance
except for carburetor adjustments.
GENERAL RECOMMENDATIONS
The warranty on this unit does not coveritems
that have been subjected to operator abuse
or negligence. To receive full value from the
warranty, the operator must maintain unit as
instructed in this manual. Various adjust-
ments will need to be made periodically to
properly maintain your unit.
CHECK FOR LOOSE
FASTENERS AND PARTS
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Spark Plug Boot
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Air Filter
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Housing Screws
CHECK FOR DAMAGED OR
WORN PARTS
Contact an authorized service dealer for re-
placement of damaged or worn parts.
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ON/OFF Switch -- Ensure ON/OFF switch
functions properly by moving the switch to the
OFF position. M ake sure engine stops; then
restart engine and continue.
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Fuel Tank -- Do not use unit if f uel tank shows
signs of damage or leaks.
INSPECT AND CLEAN UNIT AND
LABELS
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Before and after each use, inspect com-
plete unit for loose or damaged parts. After
each use, clean the unit and labels using a
damp cloth with a mild detergent.
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Wipe off unit with a clean dry cloth.
CLEAN AIR FILTER
Air Filter
Cover
Screw
Air Filter
Cleaning the air filter:
A dirty air filter decreases engine perform-
ance and increases fuel consumption and
harmful emissions. Always clean after every
5 hours of operation.
1. Clean the cover and the area around it to
keep debris from falling into the carburetor
chamber when the cover is removed.
2. Remove parts as illustrated.
NOTE:
Do not clean filter i n gasol ine o r other
flammable solvent. Doing so can cr eate a fire
hazard or produce harm ful evaporative emis-
sions.
3. Wash the filter in soap and water.
4. Allow filter to dry.
5. Add a few drops ofoil to the filter; squeeze
filter to distribute oil.
6. Replace parts.
INSPECT MUFFLER AND SPARK
ARRESTING SCREEN
NOTE:
THE SPARK ARRESTING SCREEN
ON THIS UNIT IS NOT SERVICEABLE.
For normal homeowner use, the muffler and
spark arr esting screen will not require any ser -
vice.
After 50 hours of use, we recommend that
your muffler be replaced by an authorized
service dealer.
CARBURETOR ADJUSTMENT
WARNING:
Keep others away when
making idle speed adjustments. The blade
will be moving during most of this procedure.
Wear your protective equipment and observe
all safety precautions. When making adjust-
ments, use a screwdriver short enough to
keep your hands behind the handguard and
away from the blade. After making adjust-
ments, the blade must not move at idle speed.
The carburetor has been carefully set at the
factory. Adjustments may benecessary ifyou
notice any of the following conditions:
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Engine will not idle when the throttle is re-
leased.
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The blade moves a t idle.
Keep others away when making idle speed
adjustments. Make adjustments with the unit
resting on a level surface free of debris that
can be caught in the hedge trimmer blade.
Serious injury to the operator and others can
occur if the carburetor is not properly ad-
justed. Keep all parts of your body away from
the blade and muffler.
Idle Speed Adjustment
Allow engine to idle. Adjust s peed until engine
runs without blade moving (idle too fast) or en-
gine stalling (idle speed too slow).
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Turn idle speed screw clockwise to in-
crease engine speed if engine stalls ordies.
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Turn i dle speed screw counterclockwise to
decrease engine speed if the blade moves
at idle.
WARNING:
Recheck the idle speed
after each adjustment. T he blade must not
move at idle speed to avoid serious injury to
the operator or others.