Echo CS-7310PW chain size

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

The chain for your Echo CS-7310PW

Which bar is on your saw?

20" bar

Pitch: 3/8"
Gauge: .050"
Drive links: 72

Oregon E72
Same as Stihl 33RS3
File 7/32"

24" bar

Pitch: 3/8"
Gauge: .050"
Drive links: 84

Oregon E84
Same as Stihl 33RS3
File 7/32"

Bar mount D009

Buy this chain

Oregon E72, 72 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 Echo CS-7310PW

Chain for each bar length
Bar	Pitch	Gauge	Drive links	Chain
20"	3/8"	.050"	72	E72
24"	3/8"	.050"	84	E84

The Echo CS-7310PW takes 3/8" pitch, .050" gauge chain. Drive links by bar length: 20" bar 72, 24" bar 84.

Echo genuine part numbers

If you prefer the maker's own parts, these are the numbers to ask for at a dealer.

Echo bar and chain part numbers
Bar	Chain part no.	Bar part no.	Pitch / gauge	Drive links
20"	72LPX72CQ	20H0PS3872C, 20H8PS3872C	3/8" / .050"	72
20"	73LPX72CQ	20H0PS3872C, 20H8PS3872C	3/8" / .058"	72
24"	72LPX84CQ	24H0PS3884C, 24H8PS3884C	3/8" / .050"	84
24"	73LPX84CQ	24H0PS3884C, 24H8PS3884C	3/8" / .058"	84
28"	72LPX93CQ	28H0PS3893C, 28H8PS3892C	3/8" / .050"	93
28"	73LPX92CQ	28H0PS3893C, 28H8PS3892C	3/8" / .058"	92
32"	72LPX105CQ	32H0PS3805C, 32H8PS3805C	3/8" / .050"	105
32"	73LPX105CQ	32H0PS3805C, 32H8PS3805C	3/8" / .058"	105

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

Stamp number

Type the number on a drive link

See all stamp numbers

Drive link stamp number to pitch and gauge
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 Echo CS-7310PW take?

The Echo CS-7310PW takes 3/8" pitch, .050" gauge chain. Drive links by bar length: 20" bar 72, 24" bar 84.

How many drive links is an Echo CS-7310PW chain?

It depends on the bar: 72 on a 20" bar, 84 on a 24" bar. The bar length is usually printed near the mount.

What bar fits an Echo CS-7310PW?

A bar with the D009 mount, in one of these lengths: 20", 24".

Other saws with the same chain

All saws that take E72 All saws that take E84

Related Echo saws

Every Echo model