WhichPartFits.com

Chainsaw

Stihl MS 311

2-Stroke

The Stihl MS 311 is a 59.0cc 2-stroke professional chainsaw suited for demanding felling and bucking with 18" to 20" guide bars. It is the entry point into Stihl's full professional lineup and shares engine architecture with the MS 361 family. The MS 311 runs a Walbro carburetor <!-- verify: stihlusa.com --> with a professional-capacity air filter extending service intervals. Fuel system components (filter, primer bulb, fuel lines) are the primary consumables under production use. The MS 311 bridges the agricultural MS 291 and the full-professional MS 361, suiting timber framers and municipal tree crews.

See also: MS 391 — parts are often interchangeable within this family.

Spark Plug

OEM0000 400 7000(0.5mm gap)

Air Filter

OEM1140 140 4401Fleece filter; fits MS 311, MS 362, MS 391
BrandPart #
Stens605-644Buy on Amazon →

Fuel Filter

OEM0000 350 3518Orange in-tank pickup body fuel filter
BrandPart #

Carburetor

OEM1128 120 0625Walbro HD-23
BrandPart #
WalbroHD-23Buy on Amazon →

Recoil Starter

OEM1128 080 2106Also fits MS 391
BrandPart #
Stens150-644Buy on Amazon →

Ignition Coil

OEM1128 400 1300Also fits MS 391
BrandPart #

Primer Bulb

OEM4238 350 6201Newer units (SN# 287332321+) use 0000 350 6202

Fuel Line Kit

OEM1140 358 7706Includes fuel pickup line and return line; fits MS311, MS362, MS391
BrandPart #
Stens115-128Buy on Amazon →

Chain

OEM(18", 3/8" pitch, .050" gauge, 66 drive links)Stock bar length; verify drive link count matches your bar

Guide Bar

OEM(18", 3/8" pitch, .050" gauge)