Trimmer
Stihl FS 40
2-Stroke · Also known as: FS 40 C
The Stihl FS 40 is a 27.2cc <!-- verify: stihlusa.com --> 2-stroke curved-shaft trimmer positioned just above the FS 38 in Stihl's consumer range, with a slightly refined handlebar configuration. Suited for residential grass trimming and lawn edging. The FS 40 runs a Zama carburetor; fuel system maintenance — primer bulb, fuel filter, and fuel lines — accounts for the majority of service calls. It uses a bump-feed .080" trimmer head. The FS 38, FS 40, and FS 45 share engine and filter components, ensuring strong parts availability across the entire entry range.
Stihl FS 40 quick specs
- Equipment
- Trimmer · 2-Stroke
- Covered Parts
- Spark Plug, Air Filter, Fuel Filter, Carburetor, Primer Bulb, Fuel Line Kit, Trimmer Head, Trimmer Line
- OEM References
- 7
- Model Family
- FS 38, FS 40, FS 45, FS 55
Spark Plug
OEM0000 400 7000(0.7mm gap)
| Brand | Part # | |
|---|---|---|
| NGK | BPMR7A | Buy on Amazon → |
| Champion | RCJ6Y | Buy on Amazon → |
Air Filter
OEM4144 124 2800Also fits FS 50, FS 70, KM 56
| Brand | Part # |
|---|
Fuel Filter
OEM0000 350 35023/16" ID in-tank filter
| Brand | Part # |
|---|
Carburetor
OEM4144 120 0608Zama C1M-S267D; also fits FS 50, FS 56
| Brand | Part # | |
|---|---|---|
| Zama | C1M-S267D | Buy on Amazon → |
Primer Bulb
OEM4226 121 2700
| Brand | Part # | |
|---|---|---|
| Zama | 0057004 | Buy on Amazon → |
| Hipa | G002-H | Buy on Amazon → |
Fuel Line Kit
OEM4144 358 0800Includes fuel pickup line and return line; also fits FS 50, FS 56, FS 70
| Brand | Part # | |
|---|---|---|
| Hipa | 4144 358 0800 | Buy on Amazon → |
Trimmer Head
OEM4006 710 2126AutoCut C 6-2; bump-feed; .080" line
| Brand | Part # | |
|---|---|---|
| Oregon | 55-265 | Buy on Amazon → |
Trimmer Line
OEM(.080" diameter, round)
| Brand | Part # | |
|---|---|---|
| Oregon | 22-895 | Buy on Amazon → |
| Arnold | 490-080-0100 | Buy on Amazon → |