Echo CS-270WES Service Manual


Echo CS-270WES Service Workshop Manual for the Echo CS-270WES chainsaws. View free page images online or download PDF with images, diagrams and information. Print or save to any device.
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Echo CS-270WES Service Manual Repair

Echo CS-270WES Service Workshop Manual for the Repair and service of 270WES chainsaws. The PDF manual has diagrams and acurate information to help to troubleshoot, repair and fix the Echo chainsaw. View free page images online or download a PDF manual that you can easily save, print or view on most devices.

Echo CS-270WES Service Manual-Service Data


Specification, Technical data, Torque limits, Special repairing materials, Service limits., Special tools.



General adjusting rules, Presetting idle adjust screw, L mixture needle and H mixture needle, Adjusting carburetor.

See the additional carburetor manual, parts list, operator manual and technical supplements PDF download available on this website for more information on servicing and repair of the chainsaw.

Echo CS-270WES Chainsaw Specifications

Echo 270WES chainsaw model carbureter type: Walbro WT-845 OEM Part Number.

Model: CS-270WES

External dimensions
Length mm(in): 380 (15.0)

Width mm(in): 220 (8.7)

Height mm(in): 230 (9.1)

Dry weight kg(lb): 3.1 (6.8)


Type: KIORITZ, air-cooled, two-stroke, single cylinder

Rotation: Clockwise as viewed from the output end
Displacement: cm3(in3) 26.9 (1.641)
Bore: mm(in) 35 (1.378)
Stroke: mm(in) 28 (1.102)
Compression ratio: 6.4
Carburettor Type: Diaphragm horizontal-draught with auto-return choke
Model :(Walbro) WT-845
Venturi size-Throttle bore: mm(in) 9.53 – 14.3 (0.375 – 0.563)
Ignition Type Digital Magneto : CDI system
Spark plug: BPMR-7A
Starter Type: ES (Effortless)-start
Rope :diameter x length mm(in) 3.5 x 750 (0.14 x 29.5)
Fuel Type: Premixed two-stroke fuel
Mixture ratio 50 : 1 (2 %)
Petrol: Minimum 89 octane petrol (RON) Two-stroke air cooled engine oil ISO-L-EGD (ISO/CD13738), JASO FC
Tank capacity :L (U.S.fl .oz.) 0.24 (8.1)
Clutch Type: Centrifugal, 3-shoe slide with 3-tension spring
Guide bar / Saw chain lubrication type: Automatic with volume adjuster
Oil Tank capacity: L (U.S.fl .oz.) 0.16 (5.4)
Auto oiler Type: clutch related type
Sprocket Type Spur, Number of teeth 6 (Sproket nose bar), 8 (for Carving bar)
Pitch: in 3/8 (Sproket nose bar), 1/4 (for Carving bar)

See manual for more chainsaw specs..

Light weight top handle, petrol chain saw, great for tree surgery and aboricultural applications. Super light-weight design with exceptional power.

Fuel Consumption At Maximum Engine Power (L/h) 1.14
Priming Pump Yes
Ignition System CDI
Start Assist System ES-start
Chain Brake Inertia
Choke w/ Automatic Fast Idle Release Yes
Chain Tensioner Side
Saw Chain Pitch (inch) 3/8
Guide Bar Gauge (inch) 0.50
Applicable Bar Length (cm/inch) 1 20,25,30/8,10,12

Echo CS-270WES Service Workshop Manual PDF

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