Echo CS-501SX Parts List Manual


Echo CS-501SX PARTS LIST and repair the 501SX chainsaw. View free page images online or download full PDF. Clear diagrams and accurate repair information, print or save on any suitable device.

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Echo CS-501SX Parts List Repair

Echo CS-501SX Parts List for the Echo chainsaw. Repair and identify all chainsaw parts for the Echo 501SX (CS-501SX) with this manual. The manual contains diagrams and accurate information as used by professional mechanics and repair shops to troubleshoot and identify all componants of the chainsaw.

This is the Echo 501SX parts list manual. A workshop service manual and carburetor manual is also available from this website. Chainsaw Model number Echo CS-501SX.


It is in a pdf format which contains clear exploded diagrams to help you quickly find all parts of your Echo 501SX chainsaw.

Contents of Echo 501SX Parts List Manual:

Introduction, Specifications, Clutch, Engine, Ignition system, Rewind starter, Throttle control, Fuel system, carburetor, Av system, Shaft, Cutting tool drive, Support frame, Special servicing tools and aids

Echo CS-501SX Specifications

Echo CS-501SX chainsaw model carbureter type: Walbro Wt-1141, OEM Part Number: A021004570.

Model: CS-501SX

External dimensions

Length × Width × Height mm 395 × 235 × 290


Saw without guide bar and chain, empty tanks kg 4.7


Fuel tank: mL 500

Tank for chain lubrication oil: mL 280

Fuel (Mixture ratio): Regular grade petrol. Minimum 89 Octane unleaded petrol is recommended. Do not use fuel containing methyl alcohol or more than 10 % of ethyl alcohol. 50 : 1 (2 %) for ISO-L-EGD Standard (ISO/CD13738), JASO FC, FD grade and ECHO Premium 50 : 1 oil.

Special chain oil or motor oil: Oil (Chain oil)

Cutting length

All specified usable cutting lengths of guide bar: mm 400, 450, 500


Specified pitch: mm 8.26 (0.325 inch)

Specified gauge (thickness of drive links): mm 1.47 (0.058 inch)

Type of guide bar: cm 40, 45, 50 (ECHO)

Guide bar gauge: mm 1.47 (0.058 inch)

Type of chain: Carlton K2L, Oregon 21BPX.

Chain speed at 1.33 times the maximum engine power speed: m/s 25.6

Lubrication: Adjustable automatic oil pump


Specified number of teeth: 7


Type: Air cooled 2-stroke single cylinder

Carburettor: Diaphragm type

Magneto: Flywheel magneto, CDI system

Spark plug: NGK BPMR8Y

Starter: Recoil starter

Power transmission: Automatic centrifugal clutch

Decompression device: with

Engine displacement: mL (cm3) 50.2

Maximum shaft brake power (ISO 7293): kW 2.57

Recommended maximum speed with cutting attachment: r/min 13500

Recommended speed at idling: r/min 2700 (2600 – 2800)

Other devices

Front hand guard, Rear hand guard, Throttle trigger lockout, Chain catcher, Chain brake,
Anti-vibration device, Spark arrester screen, Spiked bumper.

Echo CS-501SX Parts List PDF

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