CLEAN FUEL FILTER
To clean fuel filter, drain your unit by running dry of fuel, remove fuel cap/re-
tainer assembly from tank. Pull filter from tank and remove from llne. Clean
with mild detergent and rinse. Dry thor- oughly, reassemble.
CARBURETOR ADJUSTMENT
Start motor, let it run for 3 minutes, and proceed to the adjustment section. If engine does not start, refer to trouble- shooting chart or call
if engine performance is acceptable at the preset positions and there is no chain movement at idle, no further ad- justment is necessary.
WARNING: The chain will be moving during most of this procedure. Wear your protective equipment and observe all safety precautions. During the low speed mixture adjustment recheck idle speed after each turn of the screw. The chain must not move at idle speed.
Carburetor adjustment is critical and if done improperly can permanently dam- age the engine as well as the carbure-
tor. if you require further assistance or
are unsure about performing this proce-
dure, calt our customer assistance help line at 1-800-235-5878.
Old fuel, a dirty air filter, dirty fuel filter, or flooding may give the impression of an improperly adjusted carburetor.
Check these conditions before adjust- ing the carburetor.
The carburetor has been carefully set at the factory. Adjustments may be neces- san/if you notice any of the following conditions:
•Chain moves at idle. See "Idle Speed" under adjusting procedure.
•Saw will not idle. See "Idle Speed" and "Low Speed Mixture"under ad- justing procedure.
•Engine dies or hesitates when it should accelerate. See =Acceleration
Check" under adjusting procedure.
•Loss of cutting power. See "High Speed Mixture H" under adjusting procedure.
There are three adjustment screws on the carburetor. They are labeled H, L, and T. They are located in the area just above the primer bulb.
CARBURETOR PRESETS
When making adjustments, do not force the plastic timiter caps beyond the stops or damage wifl occur.
ADJUSTING PROCEDURE
idle
Allow engine to idle. Adjust speed until engine runs without chain movement or stalling.
•Turn clockwise to increase engine speed if engine stalls or dies.
•Turn counterclockwise to decrease speed.
No further adjustments are necessary if chain does net move at idle speed and if performance is satisfactory.
Low Speed
Allow engine to idle. Then accelerate the engine and note performance. If en- gine hesitates, bogs down, or smokes
during acceleration, turn mixture screw clockwise in
performance is satisfactory. Repeat this procedure as necessary for proper ad-
justment. After completing adjustments, check for acceleration and chain move-
ment at idle. Reset if necessary.
High Speed Mixture-H
DO NOT operate engine at full throttle for prolonged periods while making ad- justments. Damage to the engine can occur. Make a test cut. Based on per- formance of the saw while cutting, ad-
just the high speed mixture setting in
•Clockwise until saw has good power in the cut with no hesitation.Do not adjust
by sound or speed, butjudge by how well the saw perfoilT_ in the cut.
•Counterclockwise if the saw has
speed, but dies in the cut or lacks power in the cut.
After completing adjustments, check for acceleration and chain movement at
idle. Reset if necessary.
Acceleration Check
If carburetor presets are not needed, proceed to "Idle
•Turn both mixture screws counter- clockwise until they stop.
•Turn the idle speed screw clockwise
until it stops. Now turn counterclock- wise
if the engine dies or hes_tes instead of accelerating, turn the low speed m_ure
adjustment counterclockwiseuntil you have smooth acceleration with no chain
movement at idle, Recheck and adjust as necessary for acceptable performance.
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