CS-3900 - Echo Chainsaw Carburetor Parts Diagram

Dimensions: 376x214x265 mm (14.8"x8.4"x10.4"). Weight: 4.4 kg (9.7 lb) w/o chain/guide bar. Engine: 2-stroke, 39.6 cc, air-cooled, single cylinder, WARBRO HDA carburetor, flywheel magneto, CDI, CJ-6Y spark plug, recoil starter. Transmission: centrifugal clutch. Fuel: 87 octane unleaded + 32:1/50:1 Echo oil (0.40 L tank). Oil: chain/bar 0.23 L. Chain: automatic plunger pump, chain brake, kick guard. Guide-bar combos: 16A0AD3366, 16E50K, 18ESOK, 18A0AD3372.

Carburetor Parts Diagram

  • Title

Echo 12300037331

CARBURETOR - WT-118A
(Superseded to 12300037332)

$82.99

$

Usually ships in 2-4 days

0

1

SCREW

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

2

Echo 12314203930

COVER, METERING DIAPHRAGM

$4.99

$

In Stock, only 2 left!

0

3

DIAPHRAGM, METERING

Note: Use Carburetor Repair Kit P/N 12310037330 And Carburetor Diaphragm/Gasket Kit P/N 12310137330

$

$

Not available

4

GASKET, METERING

Note: Use Carburetor Repair Kit P/N 12310037330 And Carburetor Diaphragm/Gasket Kit P/N 12310137330

$

$

Not available

5

LEVER, METERING

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

6

SCREW, METERING LEVER PIN

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

7

PIN, METERING LEVER

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

8

SPRING, METERING LEVER

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

9

VALVE, INLET NEEDLE

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

10

Echo 12311610530

VALVE, THROTTLE

$2.49

$

Usually ships in 2-4 days

0

11

Echo 12311403930

SCREW

$1.49

$

In Stock, Qty 6

0

12

Echo 12313610630

BALL, CHOKE FRICTION

$0.99

$

In Stock, only 1 left!

0

13

Echo 12313510630

SPRING

$1.49

$

Usually ships in 2-4 days

0

14

SPRING

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

15

Echo 12312037330

NEEDLE, HIGH SPEED
(Superseded to Discontinued)

$

$

Not available

16

Echo 12311837330

NEEDLE, LOW SPEED

$5.49

$

Usually ships in 2-4 days

0

17

Echo 12312122130

SPRING, NEEDLE

$3.99

$

Usually ships in 2-4 days

0

18

Echo 12311735430

SHAFT, THROTTLE

$5.99

$

Usually ships in 2-4 days

0

19

Echo 12311337330

SPRING, RETURN
(Superseded to 12311337530)

$3.49

$

Usually ships in 2-4 days

0

20

STRAINER

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

21

Echo 12313237330

VALVE, CHOKE

$1.99

$

Usually ships in 2-4 days

0

22

Echo 12312703930

CLIP, THROTTLE SHAFT

$1.49

$

Usually ships in 2-4 days

0

23

Echo 12315035430

LEVER, THROTTLE
(Superseded to Discontinued)

$

$

Not available

24

Echo 12313135430

SHAFT, CHOKE

$8.99

$

Usually ships in 2-4 days

0

27

DIAPHRAGM, PUMP

Note: Use Carburetor Repair Kit P/N 12310037330 And Carburetor Diaphragm/Gasket Kit P/N 12310137330

$

$

Not available

28

GASKET, PUMP

Note: Use Carburetor Repair Kit P/N 12310037330 And Carburetor Diaphragm/Gasket Kit P/N 12310137330

$

$

Not available

29

Echo 12312435430

COVER, FUEL PUMP

$8.99

$

Usually ships in 2-4 days

0

30

Echo 12311003930

SCREW

$0.99

$

Usually ships in 2-4 days

0

31

SPRING, IDLE ADJUST

Note: Use Carburetor Repair Kit P/N 12310037330

$

$

Not available

32

Echo 12313404260

SCREW, IDLE ADJUST

$2.49

$

In Stock, only 2 left!

0

Echo 12310037330

REPAIR KIT, CARBURETOR

$

$

Not available

Echo 12310137330

GASKET / DIAPHRAGM KIT

$8.99

$

In Stock, only 4 left!

0