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.
ℹ See also: MS 391 — parts are often interchangeable within this family.
Spark Plug
OEM0000 400 7000(0.5mm gap)
| Brand | Part # | |
|---|---|---|
| NGK | BPMR7A | Buy on Amazon → |
| Champion | RCJ6Y | Buy on Amazon → |
Air Filter
OEM1140 140 4401Fleece filter; fits MS 311, MS 362, MS 391
| Brand | Part # | |
|---|---|---|
| Stens | 605-644 | Buy on Amazon → |
Fuel Filter
OEM0000 350 3518Orange in-tank pickup body fuel filter
| Brand | Part # |
|---|
Carburetor
OEM1128 120 0625Walbro HD-23
| Brand | Part # | |
|---|---|---|
| Walbro | HD-23 | Buy on Amazon → |
Recoil Starter
OEM1128 080 2106Also fits MS 391
| Brand | Part # | |
|---|---|---|
| Stens | 150-644 | Buy on Amazon → |
Ignition Coil
OEM1128 400 1300Also fits MS 391
| Brand | Part # |
|---|
Primer Bulb
OEM4238 350 6201Newer units (SN# 287332321+) use 0000 350 6202
| Brand | Part # | |
|---|---|---|
| Zama | BG-00-4 | Buy on Amazon → |
| Hipa | G002-H | Buy on Amazon → |
Fuel Line Kit
OEM1140 358 7706Includes fuel pickup line and return line; fits MS311, MS362, MS391
| Brand | Part # | |
|---|---|---|
| Stens | 115-128 | Buy on Amazon → |
Chain
OEM(18", 3/8" pitch, .050" gauge, 66 drive links)Stock bar length; verify drive link count matches your bar
| Brand | Part # | |
|---|---|---|
| Oregon | 72LPX066G | Buy on Amazon → |
Guide Bar
OEM(18", 3/8" pitch, .050" gauge)
| Brand | Part # | |
|---|---|---|
| Oregon | 180VXLHD025 | Buy on Amazon → |