Chainsaw
Echo CS-400
2-Stroke
The Echo CS-400 is a 40.2cc 2-stroke chainsaw and one of Echo's most popular homeowner/prosumer models, capable of handling 16" to 18" guide bars for regular firewood and moderate felling. It runs a Zama C1M carburetor and features a large-capacity air filtration system. Known for reliable cold starting and ease of routine maintenance. Common service items are the spark plug (Champion CJ8Y), air filter, fuel filter, and primer bulb. Echo's G-Force Engine Air Pre-Cleaner system extends air filter service intervals compared to conventional filtration designs.
ℹ See also: CS-440 — parts are often interchangeable within this family.
Spark Plug
OEM90023Y(0.6mm gap)
| Brand | Part # | |
|---|---|---|
| Champion | CJ8Y | Buy on Amazon → |
| NGK | BPM8Y | Buy on Amazon → |
Air Filter
OEMA226000860
| Brand | Part # | |
|---|---|---|
| Stens | 605-400 | Buy on Amazon → |
Fuel Filter
OEMA369000100In-tank pickup filter; fits most Echo chainsaws and trimmers
| Brand | Part # | |
|---|---|---|
| Stens | 610-009 | Buy on Amazon → |
Carburetor
OEM12520005570Zama C1M-K47B; 40.2cc engine
| Brand | Part # | |
|---|---|---|
| Zama | C1M-K47B | Buy on Amazon → |
Recoil Starter
OEMA180001210
| Brand | Part # |
|---|
Primer Bulb
OEM12318139130
| Brand | Part # | |
|---|---|---|
| Zama | BG-00-4 | Buy on Amazon → |
Fuel Line Kit
OEM13200700760Includes fuel pickup line and return line
| Brand | Part # | |
|---|---|---|
| Stens | 115-530 | Buy on Amazon → |
Chain
OEM(18", 3/8" LP pitch, .050" gauge, 62 drive links)Stock bar length; verify drive link count matches your bar
| Brand | Part # | |
|---|---|---|
| Oregon | 91PX062G | Buy on Amazon → |
Guide Bar
OEM(18", 3/8" LP pitch, .050" gauge)
| Brand | Part # | |
|---|---|---|
| Oregon | 180SDEA041 | Buy on Amazon → |