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Echo CS-501P User Manual

Echo CS-501P
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CS-501P MAINTENANCE
X7503312804 43
© 01/20 ECHO Incorporated
* Replacement is recommended based on the finding of damage or wear
during inspection.
Carburetor Adjustment
Every unit is run at the factory and the
carburetor is set in compliance with Emission
Regulations. In addition, the carburetor is
equipped with “H” (High Speed) and (“L” (Low
Speed) needle adjustment limiters that prevent
settings outside acceptable limits.
Engine Break-In
New engines must be operated a minimum duration of two tanks of fuel
break-in before carburetor adjustments can be made. During the break-in
period your engine performance will increase and exhaust emissions will
stabilize. Idle speed can be adjusted as required.
High Altitude Operation
This engine has been factory adjusted to maintain satisfactory starting and
durability performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To
maintain proper engine operation above 1,100 feet ASL the carburetor may
need to be adjusted by an authorized service dealer.
If the engine is adjusted for operation above 1,100 feet ASL, the
carburetor must be re-adjusted when operating the engine below
1,100 feet ASL, otherwise severe engine damage may result.
1. Before adjusting carburetor clean or
replace air filter and muffler “Spark
Arrestor Screen”.
2. Make sure the bar and chain are properly
adjusted.
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” High Speed needle
counterclockwise (CCW) to stop. Turn
L” Low Speed needle midway between
full clockwise (CW) stop and CCW stop.
5. Idle Speed Adjustment:

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Echo CS-501P Specifications

General IconGeneral
Engine Displacement50.2 cc
Chain Pitch0.325 in
Chain Gauge0.050 in
Bar Length18 in
Fuel Capacity0.5 liters
Oil Capacity0.25 liters
Starting SystemRecoil
Fuel Tank Capacity0.5 liters
Oil Tank Capacity0.25 liters
Weight (Powerhead Only)10.6 lbs

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