Echo SRM-3800 TYPE1-E - Manual (Page 18)

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High spped needle (H)
Low speed needle (L)
Idle speed adjustment screw
WARNING DANGER
CUTTING ATTACHMENT MUST NOT TURN OR
MOVE WHEN UNIT IS IDLING.
CARBURETOR ADJUSTMENT
Every unit is run at the factory and the carburetor is
set in compliance with California Emission Regula-
tions, In addition, the carburetor is equipped with “H”
(High Speed Needle) and “L” (Low Speed Needle) nee-
dle adjustment limiters that prevent settings outside
acceptable limits.
1. Before adjusting carburetor clean or replace air
filter and muffler, “Spark Arrestor Screen”.
2. Make sure the cutting attachment such as hedge
clipper blades or circular saw are properly adjusted.
Trimmer line should be extended to cut-off knife.
3. Start engine and run several minutes to bring to
operating temperature. Flash choke twice during
warm-up to clear any air from the fuel system.
4. Stop engine. Turn “H” speed needle CCW (counter
clockwise) to stop. Turn “L” speed needle midway
between full CW (clockwise) stop and CCW stop.
5. Idle Speed Adjustment
•
Start engine, turn “idle” speed adjustment
screw CW until the saw chain begins to turn,
then turn screw out CCW until attachment
stops turning. Turn screw out, CCW, an
addtional 1/4 turn.
SPARK PLUG
•
Check periodically.
•
Standard spark plug gap is 0.6 - 0.7 mm
(0.024 - 0.028 in).
•
Replace if either electrode is worn or if the insulator
is fouled by oil or other deposits.
•
TORQUE = 14.2 - 15.2 N
⋅⋅⋅⋅⋅
m (125 - 135 in
.
lb)
CAUTION
Do not over torque.
0.6 - 0.7mm (.024 - .028 in.)
Gear
housing
Bolt
GEAR HOUSING
•
Remove the bolt every 50 hours and check.
•
Replenish as necessary, but do not overfill.
-
Shell delpena or good quality lithium multi
grease is recommendable.