Efco 181 chain size
The chain for your Efco 181
- Pitch
- 3/8"
- Gauge
- .050"
- Drive links
- 72
The Efco 181 with a 20" bar takes 3/8" pitch, .050" gauge chain with 72 drive links (Oregon D72).
Bar mount D009 or D024
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Check pitch, gauge and drive links on the listing before you order. How this works
Check the chain on your saw
Find pitch and gauge from the number on a drive link
Type the number on a drive link
See all stamp numbers
| Stamp | Pitch | Gauge |
|---|---|---|
| 11 | 3/4" | .122" |
| 16 | .404" | .063" |
| 18 | .404" | .080" |
| 20 | .325" | .050" |
| 21 | .325" | .058" |
| 22 | .325" | .063" |
| 25 | 1/4" | .050" |
| 26 | .404" | .058" |
| 27 | .404" | .063" |
| 33 | .325" | .050" |
| 34 | .325" | .058" |
| 35 | .325" | .063" |
| 50 | .404" | .050" |
| 51 | .404" | .058" |
| 52 | .404" | .063" |
| 58 | .404" | .058" |
| 59 | .404" | .063" |
| 68 | .404" | .063" |
| 72 | 3/8" | .050" |
| 73 | 3/8" | .058" |
| 75 | 3/8" | .063" |
| 80 | .325" LP | .043" |
| 90 | 3/8" LP | .043" |
| 91 | 3/8" LP | .050" |
| 95 | .325" | .050" |
Questions people ask
What size chain does an Efco 181 take?
The Efco 181 with a 20" bar takes 3/8" pitch, .050" gauge chain with 72 drive links (Oregon D72).
What bar fits an Efco 181?
A bar with the D009 or D024 mount, in one of these lengths: 20".
Can I use a chain with the same length but different pitch?
No. Pitch and gauge have to match the bar and sprocket, and the drive link count has to match the bar. A chain that is off on any of the three will not fit or run safely.