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Trimmer

Echo SRM-266

2-Stroke

The Echo SRM-266 is a 25.4cc <!-- verify: echo-usa.com --> 2-stroke straight-shaft trimmer in the upper tier of Echo's commercial SRM lineup, producing significantly more torque than the SRM-225/230 class for heavy brush, tough grass, and demanding vegetation management. It runs a Zama carburetor and is capable of driving brush blade attachments. Under commercial production use, the SRM-266 warrants monthly fuel system inspection and air filter service. The gearhead should be inspected and greased seasonally. A step toward a dedicated brush cutter for operators who regularly encounter thick growth.

See also: SRM-266S — parts are often interchangeable within this family.

Spark Plug

OEM90023Y(0.6mm gap)

Air Filter

OEMA226000640Also fits SRM-266S, SRM-266T
BrandPart #
Stens605-543Buy on Amazon →

Fuel Filter

OEMA369000100In-tank pickup filter; fits most Echo chainsaws and trimmers
BrandPart #
Stens610-009Buy on Amazon →

Carburetor

OEM12520005563Zama C1U-K82; 25.4cc engine

Recoil Starter

OEMA180001100Also fits SRM-266S
BrandPart #

Primer Bulb

OEM12318139130

Fuel Line Kit

OEMV471001471Includes fuel pickup line and return line
BrandPart #
Stens115-530Buy on Amazon →

Trimmer Head

OEM99944200903Speed-Feed 400; bump-feed
BrandPart #
Oregon55-256Buy on Amazon →

Trimmer Line

OEM(.095" diameter, round)