Tanaka ECS-4000 chain size

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

The chain for your Tanaka ECS-4000

Which bar is on your saw?

16" bar

Pitch
.325"
Gauge
.050"
Drive links
66
  • Oregon H66
  • Same as Stihl 23RM3, Husqvarna H22, Husqvarna H22X
  • File 3/16"

18" bar

Pitch
.325"
Gauge
.050"
Drive links
72
  • Oregon H72
  • Same as Stihl 23RM3, Husqvarna H22, Husqvarna H22X
  • File 3/16"

20" bar

Pitch
.325"
Gauge
.050"
Drive links
78
  • Oregon H78
  • Same as Stihl 23RM3, Husqvarna H22, Husqvarna H22X
  • File 3/16"

Bar mount K041

Buy this chain

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Oregon H66, 66 drive links

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

All bar lengths for the Tanaka ECS-4000
Chain for each bar length
BarPitchGaugeDrive linksChain
16".325".050"66H66
18".325".050"72H72
20".325".050"78H78

The Tanaka ECS-4000 takes .325" pitch, .050" gauge chain. Drive links by bar length: 16" bar 66, 18" bar 72, 20" bar 78.

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 a Tanaka ECS-4000 take?

The Tanaka ECS-4000 takes .325" pitch, .050" gauge chain. Drive links by bar length: 16" bar 66, 18" bar 72, 20" bar 78.

How many drive links is a Tanaka ECS-4000 chain?

It depends on the bar: 66 on a 16" bar, 72 on a 18" bar, 78 on a 20" bar. The bar length is usually printed near the mount.

What bar fits a Tanaka ECS-4000?

A bar with the K041 mount, in one of these lengths: 16", 18", 20".

Other saws with the same chain

All saws that take H66 All saws that take H72 All saws that take H78

Related Tanaka saws

Every Tanaka model