Trimmer
Stihl FS 100 R
4-Mix · Also known as: FS 100
The Stihl FS 100 R is a 36.3cc <!-- verify: stihlusa.com --> 4-Mix straight-shaft trimmer and a step above the FS 90 in Stihl's professional lineup. The 4-Mix engine runs standard 50:1 premix on a 4-stroke valve train for reduced noise, improved torque, and lower emissions. It runs a Walbro carburetor <!-- verify: stihlusa.com --> and is capable of driving rigid brush blades for heavy vegetation management. Valve clearance inspection every 50 hours is an additional maintenance task unique to 4-Mix models. Gearhead grease repacking and fuel system service are performed seasonally under commercial use.
ℹ See also: FS 90 R, FS 100, FS 110, FS 111 R, FS 130 R, FS 131 R — parts are often interchangeable within this family.
Spark Plug
OEM0000 400 7009(0.7mm gap)10mm thread (CMR5H) — do not substitute BPMR7A (14mm thread)
| Brand | Part # | |
|---|---|---|
| NGK | CMR5H | Buy on Amazon → |
Air Filter
OEM4180 120 1800Also fits FS 87, FS 90, FS 110, FS 130
| Brand | Part # |
|---|
Fuel Filter
OEM0000 350 3502In-tank pickup filter
| Brand | Part # |
|---|
Carburetor
OEM4180 120 0607Zama C1Q-S183; 4-Mix diaphragm carb
| Brand | Part # | |
|---|---|---|
| Zama | C1Q-S183 | Buy on Amazon → |
Recoil Starter
OEM4180 080 2102Fits FS 90 R, FS 100, FS 110, FS 130 R
| Brand | Part # | |
|---|---|---|
| Stens | 150-570 | Buy on Amazon → |
Ignition Coil
OEM4180 400 1300Fits FS 90 R, FS 100, FS 110, FS 130 R
| Brand | Part # |
|---|
Primer Bulb
OEM4226 121 2700
| Brand | Part # | |
|---|---|---|
| Zama | 0057004 | Buy on Amazon → |
| Hipa | G002-H | Buy on Amazon → |
Fuel Line Kit
OEM4180 350 1402Includes fuel pickup line and return line; replaces 4180 358 7700
| Brand | Part # | |
|---|---|---|
| Hipa | 4180 350 1402 | Buy on Amazon → |
Trimmer Head
OEM4002 710 2193AutoCut C 26-2; bump-feed
| Brand | Part # | |
|---|---|---|
| Oregon | 55-266 | Buy on Amazon → |
Trimmer Line
OEM(.095" diameter, round)
| Brand | Part # | |
|---|---|---|
| Oregon | 22-895 | Buy on Amazon → |
| Arnold | 490-095-0100 | Buy on Amazon → |