WhichPartFits.com

Trimmer

Echo SRM-225

2-Stroke

The Echo SRM-225 is a 21.2cc 2-stroke straight-shaft trimmer and one of the most widely used commercial trimmers in North America, standard equipment on landscaping crews across the US. Despite modest displacement, the SRM-225 delivers reliable power for production grass and light brush trimming and is known for durability under daily commercial conditions. It runs a Zama carburetor. Under commercial use, monthly fuel system service (primer bulb, filter, lines) and seasonal spark plug replacement are routine. The SRM-225's dominance in the landscaping market means large aftermarket parts availability from multiple suppliers.

See also: SRM-210, SRM-230 — parts are often interchangeable within this family.

Spark Plug

OEM90023Y(0.6mm gap)Also fits SRM-230, SRM-210

Air Filter

OEMA226000050Also fits SRM-210, SRM-230
BrandPart #
Stens605-263Buy on Amazon →

Fuel Filter

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

Carburetor

OEM12520005562Zama C1U-K52; 21.2cc engine

Recoil Starter

OEMA180000880Also fits SRM-210, SRM-230
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(.080" diameter, round)