WhichPartFits.com

Chainsaw

Echo CS-355T

2-Stroke

The Echo CS-355T is a 35.8cc 2-stroke top-handle chainsaw designed for arborist and aerial tree work, intended for use by certified climbers in a harness rather than for ground-level operation. It runs a Zama carburetor and accepts short guide bars (10"–14") appropriate for limbing and pruning aloft. Maintenance under commercial arborist use is intensive: air filter after each shift, spark plug seasonally, and monthly fuel system service (filter, primer bulb, lines). Echo's professional warranty covers commercial operators.

Verify before ordering: Fitment can vary by serial number, production date, region, and sub-model. Match the OEM number and physical dimensions before ordering.

Echo CS-355T quick specs

Equipment
Chainsaw · 2-Stroke
Covered Parts
Spark Plug, Air Filter, Fuel Filter, Carburetor, Recoil Starter, Ignition Coil, Primer Bulb, Fuel Line Kit, Chain, Guide Bar
OEM References
90023Y, A226001661, A369000100, A021003681, A051002511, A411001400, 12318139130, V471001471
Model Family
CS-330T, CS-355T
Data Confidence
Not yet independently reviewed

Quick Fitment

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Tune-Up Kit

Common service bundle: spark plug, air filter, fuel filter, carburetor, primer bulb, fuel line kit.

Maintenance Interval

Inspect filters and fuel lines each season, replace spark plugs during annual service, and service carb/fuel-system parts when starting or idle symptoms appear.

Before You Buy

  • Confirm the full model is Echo CS-355T, not just the family name.
  • Check serial number, production date, and regional variant before ordering.
  • Match the old OEM number stamped on the removed part when available.
  • Compare dimensions, plug gap, thread, fuel line diameter, or chain pitch/gauge where applicable.

Common Mistakes

  • Ordering from a family listing without checking the exact sub-model.
  • Buying a kit that includes the headline part but wrong gaskets, lines, or bulb size.
  • Choosing the wrong carburetor revision when multiple versions were used.
  • Assuming all fuel line kits use the same diameter and routing.
  • Installing the correct plug number with the wrong gap.
  • Matching bar length but missing pitch, gauge, or drive-link count.

Symptoms Map

Won't start

Spark plug, fuel filter, primer bulb, carburetor

Starts then dies

Fuel filter, fuel line kit, carburetor

Bogs under throttle

Air filter, carburetor, spark plug gap

Primer will not fill

Primer bulb, fuel line routing, in-tank filter

Cuts slowly

Chain pitch/gauge, bar wear, drive links

Replacement Options

Best OEM equivalent

Start with OEM references 90023Y, A226001661, A369000100, A021003681 and match the removed part before choosing a listing.

Named part options

Cross-check named parts such as Champion CJ8Y (spark plug), Stens 610-009 (fuel filter), Walbro WT-1049 (carburetor) against the OEM number, identity label, and dimensions.

Best for annual tune-up

Bundle spark plug, air filter, fuel filter when servicing the Echo CS-355T at the start of the season.

Best if replacing fuel system

Compare the fuel filter, carburetor, primer bulb, fuel line kit together so line routing, bulb size, filter style, and carburetor connections match.

Best chain/bar combo

Match chain specs together, especially pitch, gauge, drive links, and bar mount details.

Best budget kit

Use kit listings only when every included part matches this model page; cheap kits often mix correct headline parts with wrong bulbs, lines, or gaskets.

FAQ

Should I buy OEM or aftermarket parts for the Echo CS-355T? Use OEM when the part controls fuel metering, ignition, or safety. Aftermarket kits can be useful for routine filters, bulbs, plugs, and tune-up bundles when the OEM number and dimensions match.

How do I avoid ordering the wrong carburetor for the CS-355T? Match the carburetor number stamped on the removed unit, then compare linkage, choke setup, primer routing, gasket stack, and fuel-inlet direction.

What should I check before replacing fuel-system parts? Photograph the old fuel-line routing, match line diameter and filter style, and compare primer bulb size before buying a kit.

What chain details matter besides bar length? Match pitch, gauge, and drive-link count against the bar stamp, old chain, and drive sprocket. Bar length alone is not enough.

As an Amazon Associate, WhichPartFits earns from qualifying purchases. Match the OEM number, dimensions, and model variant before buying.

Spark Plug

OEM90023Y
Dimensions
0.6mm gap
Variant notes
Also fits CS-310, CS-352

Air Filter

OEMA226001661
  • No named part listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Fuel Filter

OEMA369000100
Variant notes
In-tank pickup filter; fits most Echo chainsaws and trimmers

Carburetor

OEMA021003681
Variant notes
Walbro WT-1049; 35.8cc top-handle engine with Spring-Assist starter

Recoil Starter

OEMA051002511
Variant notes
Also fits Shindaiwa 358T
  • No named part listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Ignition Coil

OEMA411001400
Variant notes
Also fits Shindaiwa 358Ts
  • No named part listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Primer Bulb

OEM12318139130

Fuel Line Kit

OEMV471001471
Variant notes
Includes fuel pickup line and return line

Chain

OEMSpec-based fitment
Dimensions
14", 3/8" LP pitch, .050" gauge, 52 drive links
Variant notes
Stock bar length 14" (16" also available); verify drive link count matches your bar

Guide Bar

OEMSpec-based fitment
Dimensions
14", 3/8" LP pitch, .050" gauge