Echo 501P chain size

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

The chain for your Echo 501P

Which bar is on your saw?

16" bar

Pitch
.325"
Gauge
.050"
Drive links
66
  • Part no. 20LPX66CQ

18" bar

Pitch
.325"
Gauge
.050"
Drive links
72
  • Part no. 20LPX72CQ

20" bar

Pitch
.325"
Gauge
.050"
Drive links
78
  • Part no. 20LPX78CQ

Buy this chain

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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 501P
Chain for each bar length
BarPitchGaugeDrive linksChain
16".325".050"6620LPX66CQ
18".325".050"7220LPX72CQ
20".325".050"7820LPX78CQ

The Echo 501P takes .325" pitch, .050" gauge chain. Drive links by bar length: 16" bar 66, 18" bar 72, 20" bar 78.

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
BarChain part no.Bar part no.Pitch / gaugeDrive links
16"20LPX66CQ16F0LD3366C.325" / .050"66
18"20LPX72CQ18F0LD3372C.325" / .050"72
20"20LPX78CQ20F0LD3378C.325" / .050"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 an Echo 501P take?

The Echo 501P 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 an Echo 501P 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.

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.

Related Echo saws

Every Echo model