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Echo CS-355T - User Manual

Echo CS-355T
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X7503323507
© 01/2021 ECHO Incorporated
Operator’s
Manual
CS-355T
Chain Saw
The engine exhaust from this product contains chemicals
known to the State of California to cause cancer, birth defects,
or other reproductive harm.
Read and understand all provided literature before
use. Failure to do so could result in serious injury.
Note: This product complies with CAN ICES-2/NMB-2.

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Questions and Answers

  • M
    Mrs. Shelley BrownAug 18, 2025
    Why is my Echo CS-355T engine cranking but hard to start?
    • G
      Gregory HallAug 18, 2025
      If your Echo Chainsaw engine cranks but is hard to start, it could be due to several reasons. The fuel strainer or fuel line might be clogged, or there could be an issue with the carburetor. Try cleaning or replacing the fuel strainer or fuel line. If the fuel mixture is too rich, open the choke, clean or replace the air filter, or adjust the carburetor. Also, make sure the stop switch is in the ON position. Check the spark plug gap and adjust it to 0.65mm (0.026in.), or clean/replace the spark plug if it's covered with carbon or fouled with fuel, or replace the spark plug if it's defective. If these steps don't resolve the issue, consult your Echo dealer.
  • O
    owensdavidAug 20, 2025
    Why is my Echo CS-355T Chainsaw engine hard to start or not starting?
    • L
      Leonard MooreAug 20, 2025
      If your Echo Chainsaw engine starts hard or not at all, it could be due to several reasons. First, ensure the STOP switch is in the ON position. If that's not the issue, the fuel strainer or fuel line might be obstructed, requiring cleaning or replacement. A fuel mixture that's too rich can also cause this; try opening the choke, cleaning or replacing the air filter, and adjusting the carburetor. Finally, check the spark plug for incorrect gap, carbon buildup, fuel fouling, or defects; adjust the gap to 0.65 mm (0.026 in.) or replace the plug.
  • R
    Robert LloydAug 23, 2025
    What to do if Echo CS-355T engine cranks but no fuel at carburetor?
    • A
      Andrew HuffmanAug 23, 2025
      If your Echo Chainsaw engine cranks but there's no fuel at the carburetor, the fuel filter or fuel line might be clogged. Try cleaning or replacing the fuel filter and cleaning the fuel line. If the problem persists, consult your ECHO dealer regarding the carburetor.
  • F
    Felicia FowlerAug 26, 2025
    Why does my Echo Chainsaw engine run, but dies or accelerates poorly?
    • M
      Monica ClarkAug 26, 2025
      If your Echo Chainsaw engine runs but dies or accelerates poorly, several factors could be the cause. A dirty air filter or fuel filter can restrict the flow, so cleaning or replacing them is a good first step. A blocked fuel vent can also cause issues, so ensure it is clean. The spark plug may need cleaning, adjusting, or replacement. Adjusting the carburetor might also resolve the problem. Additionally, check for blockages in the cooling system or the exhaust port/spark arrestor screen and clean them if necessary.
  • S
    scottlarsonAug 28, 2025
    What to do if my Echo Chainsaw engine runs, but dies or does not accelerate properly?
    • K
      kentthomasAug 28, 2025
      If your Echo Chainsaw engine runs but dies or doesn't accelerate correctly, it might be due to normal wear, which requires cleaning or replacement. Alternatively, there might be contaminants or residue in the fuel; in that case, replace the filter or fuel. Also, check for contaminated fuel and clean or replace if necessary.
  • R
    Richard CardenasAug 30, 2025
    What to do if my Echo CS-355T engine runs but dies or won't accelerate?
    • S
      Sarah HarrisonAug 30, 2025
      If your Echo Chainsaw engine runs but dies or does not accelerate properly, it could be due to contaminants or residues in the fuel. Try replacing the fuel. Normal wear of components or extended operation in dirty/dusty locations can also cause this issue. Clean or replace the affected parts. Additionally, vibration might be a factor, so try adjusting the relevant components.
  • R
    Randy FloresSep 1, 2025
    Why does my Echo CS-355T engine run, then die or accelerate poorly?
    • A
      adammaxwellSep 2, 2025
      If your Echo Chainsaw engine runs but then dies, or if it accelerates poorly, several issues could be the cause. A dirty air filter or fuel filter could be restricting the flow, so try cleaning or replacing them. A blocked fuel vent can also cause this issue; try cleaning it. Inspect the spark plug; clean and adjust or replace if necessary. The carburetor may need adjustment. Additionally, a blocked cooling system or exhaust port/spark arrestor screen can cause these symptoms, so clean these components.
  • B
    Bryan LewisSep 4, 2025
    What to do if Echo Chainsaw engine cranks but no spark at plug?
    • K
      Kyle LeSep 4, 2025
      If your Echo Chainsaw engine cranks but there's no spark at the plug, the spark gap may be incorrect; adjust it to 0.65 mm (0.026 in.). The spark plug could also be covered with carbon or fouled with fuel; in this case, clean or replace it. If the spark plug is defective, replace it.
  • S
    Sarah SmithSep 6, 2025
    Why is the muffler wet with fuel on my Echo CS-355T Chainsaw when it cranks?
    • M
      Michael JohnsonSep 6, 2025
      If the muffler of your Echo Chainsaw is wet with fuel when the engine cranks, the fuel mixture might be too rich. Try opening the choke. You may also need to clean or replace the air filter, or adjust the carburetor. If these steps don't resolve the issue, consult your ECHO dealer.
  • B
    Brenda NavarroSep 9, 2025
    What to do if Echo CS-355T cranks but no spark at end of plug wire?
    • R
      Robert BarrettSep 9, 2025
      If your Echo Chainsaw engine cranks but there is no spark at the end of the plug wire, ensure the ignition switch is turned on. If it is on, there may be an electrical problem, so consult your ECHO dealer.

Summary

SERVICING INFORMATION

SAFETY

Rules for Safe Operation and Kickback

General safety, kickback causes, and prevention methods.

Chain Brake Operation and Testing

How to use, test, and maintain the chain brake system.

Personal Protective Equipment (PPE)

Essential gear for operator safety.

EMISSION CONTROL

PREPARATION FOR USE

Guide Bar and Saw Chain Installation

Procedures for mounting and properly fitting the bar and chain.

OPERATION

Fuel and Lubrication Requirements

Specifications for fuel, 2-stroke oil, and chain oil.

Handling Fuel Safely

Precautions for mixing, storing, and refueling.

Starting Procedures (Cold and Warm Engine)

Step-by-step instructions for starting.

Advanced Cutting Techniques (Felling, Limbing, Bucking)

Detailed procedures for tree felling and log processing.

MAINTENANCE

TROUBLESHOOTING

Engine Problem Troubleshooting Chart

Guide to diagnosing and resolving common engine issues.

STORAGE

SPECIFICATIONS

Echo CS-355T Specifications

General IconGeneral
Engine Displacement35.8 cc
Engine Type2-stroke
Bar Length14 inches
Chain Pitch3/8 inch
Chain Gauge0.050 inches

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