Efco 171 chain size

Chainsaw drawing: the bar and chain are the parts this page is about

The chain for your Efco 171

Which bar is on your saw?

Which chain is on it now?

8" bar

Pitch
3/8"
Gauge
.058"
Drive links
68

8" bar

Pitch
3/8"
Gauge
.058"
Drive links
72

16" bar

Pitch
3/8"
Gauge
.058"
Drive links
60

18" bar

Pitch
3/8"
Gauge
.058"
Drive links
68

20" bar

Pitch
3/8"
Gauge
.058"
Drive links
72

22" bar

Pitch
3/8"
Gauge
.058"
Drive links
76

30" bar

Pitch
3/8"
Gauge
.058"
Drive links
102

Bar mount D009 or D024

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Check pitch, gauge and drive links on the listing before you order. How this works

All bar lengths for the Efco 171
Chain for each bar length
BarPitchGaugeDrive links
8"3/8".058"68
8"3/8".058"72
16"3/8".058"60
18"3/8".058"68
20"3/8".058"72
22"3/8".058"76
30"3/8".058"102

The Efco 171 takes 3/8" pitch, .058" gauge chain. Drive links by bar length: 8" bar 68, 8" bar 72, 16" bar 60, 18" bar 68, 20" bar 72, 22" bar 76, 30" bar 102.

Check the chain on your saw

Drawing: pitch is the distance between three rivets divided by two
Pitch Measure across three rivets and divide by two. Common pitches are 1/4", .325", 3/8" and .404".
Drawing: gauge is the thickness of the drive link in the bar groove
Gauge The thickness of the drive link that rides in the bar groove: .043", .050", .058" or .063".
Drawing: count the drive links, the tabs under the chain
Drive links Lay the chain flat and count the tabs underneath. Mark one with a paint pen so you know where you started.
Find pitch and gauge from the number on a drive link
Type the number on a drive link
See all stamp numbers
Drive link stamp number to pitch and gauge
StampPitchGauge
113/4".122"
16.404".063"
18.404".080"
20.325".050"
21.325".058"
22.325".063"
251/4".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"
723/8".050"
733/8".058"
753/8".063"
80.325" LP.043"
903/8" LP.043"
913/8" LP.050"
95.325".050"

Questions people ask

What size chain does an Efco 171 take?

The Efco 171 takes 3/8" pitch, .058" gauge chain. Drive links by bar length: 8" bar 68, 8" bar 72, 16" bar 60, 18" bar 68, 20" bar 72, 22" bar 76, 30" bar 102.

How many drive links is an Efco 171 chain?

It depends on the bar: 68 on a 8" bar, 72 on a 8" bar, 60 on a 16" bar, 68 on a 18" bar, 72 on a 20" bar, 76 on a 22" bar, 102 on a 30" bar. The bar length is usually printed near the mount.

What bar fits an Efco 171?

A bar with the D009 or D024 mount, in one of these lengths: 8", 16", 18", 20", 22", 30".

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