For Echo

Echo PB-403 / PB-413 Backpack Carburetor (C1M-K77)

4.5 (38)

A C1M-K77 pattern carb for Echo's mid-size PB-403 and PB-413 backpack blowers, with the air filter and double fuel filters that belong beside it.

$16.99price at last check, Sep 27, 2026

Fits models

PB-403H
PB-403T
PB-413H
PB-413T

Replaces: C1M-K77, C1M-K76, C1M-K42B, C1M-K49A, A021000893, A021000894, A021000773

This carburetor does not fit the Echo PB-580T.

About this kit

The 40cc Echo backpacks are common with small lawn crews, and their Zama C1M-K carbs wear out in predictable ways: the throttle shaft loosens and the metering diaphragm stiffens. Ours replaces the K76, K42B and K49 variants and eight Echo part numbers in one body.

It is not a PB-580T carb, and it will not fit one. For the 580, see our separate kit. This bag holds the carburetor, an air filter, two gaskets, two fuel filters, two bulbs, a plug, two lines and a grommet.

Replaces Zama C1M-K76, K42B, K49A/B/C
Fits PB-403H, PB-403T, PB-413H, PB-413T
Replaces eight Echo A0210008xx numbers
Not for PB-580T

In the box

1 carburetor
1 air filter
2 gaskets
2 fuel filters
2 primer bulbs
1 spark plug
2 fuel lines
1 grommet

For machine brand	Echo
Replaces	C1M-K77, C1M-K76, C1M-K42B, C1M-K49A, A021000893, A021000894
Items in the kit	8
Kit options	1
Rating	4.5 / 5 from 38 reviews
Category	Leaf Blower Carburetors & Tune-Up Kits