CS-340

Modified on Mon, Nov 10, 2025 at 11:04 AM

General Information:

  • Production Dates: 2002-2003
  • MSRP: (Suggested retail price. Subject to change without notice.)
    • CS-340-12": $279.99
    • CS-340-14": $289.99
    • CS-340-16": $299.99
  • Model Number Breakdown: "CS" Chainsaw, "340" The first two numbers are the engine cc size generally within, plus or minus 1 cc to 2 cc. The last number is the subversion within that model series 
  • Replaced Model: CS-3400
  • Replaced By Model: CS-341
  • Uses & Applications: Designed for felling trees and cutting wood
  • Box Dimensions: No box dimensions due to age
  • Operator's/Safety Manuals, Parts Catalogs: In Business Portal, go to the "Search" tab and enter the model number in the "Item #" field. From there, select the correct document. 
  • Accessories: Search for the article titled "What accessories are available for the ECHO® chainsaws?"  


Features: 

  • Slope Advance Ignition System (SAIS2) 
  • Side access chain tensioner 
  • Automatic adjustable oiler 
  • Inertia-type chain brake 
  • Throttle lock-out and chain catcher - Lanyard ring 


Guide Bars & Chains: 

  • 12": 
    • Guide Bar - Part #12A0CD3745C 
    • Chain - Part #91PX45CQ - 45 drive links, .050 in. gauge, 3/8 in. pitch, 5/32 in. file size 
    • Chain - Part #91PXL45CQ - 45 drive links, .050 in. gauge, 3/8 in. pitch, 5/32 in. file size 
  • 14": 
    • Guide Bar - Part #14A0CD3752C or #14A0ZD3752C 
    • Chain - Part #91PX52CQ - 52 drive Links, .050 in. gauge, 3/8 in. pitch, 5/32 in. file size 
    • Chain - Part #91PXL52CQ - 52 drive links, .050 in. gauge, 3/8 in. pitch, 5/32 in. file size 
  • 16": 
    • Guide Bar - Part #16A0CD3757C or #16A0ZD3757C 
    • Chain - Part #91PX57CQ - 57 drive links, .050 in. gauge, 3/8 in. pitch, 5/32 in. file size 
    • Chain - Part #91PXL57CQ - 57 drive links, .050 in. gauge, 3/8 in. pitch, 5/32 in. file size 


Technical Specifications: For more details on specifications, torque limits, service limits, and special tools, refer to the attached "Service Data."

  • Length: 10.2 in.
  • Width: 9.2 in.
  • Height: 8.7 in.
  • Weight: 7.3 lb.
  • Engine Type: Air cooled, two-stroke, single cylinder gasoline engine
  • Engine Displacement: 33.4 cc
  • Bore: 1.535 in.
  • Stroke: 1.102 in.
  • Compression Ratio: N/A 
  • Ignition Type: CDI (Capacitor discharge ignition)
  • Spark Plug: NGK BPM-8Y 
  • Starter: Recoil Starter
  • Fuel Tank Capacity: 7.6 fl. oz.
  • Oil Tank Capacity: 5.1 fl. oz. 
  • Oiling System: Automatic adjustable 
  • Vibration Reduction: Yes
  • Sprocket Type: Spur, 6-tooth, 3/8 in. pitch 
  • Exhaust: Spark arrestor muffler 
  • Clutch: Centrifugal  
  • Idle Speed: 2,700-3,300 RPM
  • Wide Open Throttle Speed: 10,500-11,500 RPM
  • Compression Pressure: 120 PSI
  • Primary Coil Resistance: N/A (This model does not have a primary coil resistance because it uses a special spark advance system. Therefore, no primary resistance readings are available for this unit.) 
  • Secondary Coil Resistance: 1.3-1.7 ohms

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