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Echo Chain Saw CS4910 2020 Carburetor Replacement

Introduction

Use this guide to replace the carburetor in your Echo Chain Saw CS-4910 (2020).

Although it's not necessary to remove the guide bar, it's highly recommended you do so to minimize any damage to the chain and to yourself.

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  1. Echo Chain Saw CS4910 2020 Carburetor Replacement, Turn off the chainsaw: étape 1, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Turn off the chainsaw: étape 1, image 2 de 2

    • Make sure you have the ignition switch turned off before starting your repair.

    • The chainsaw should be cool to the touch before continuing.

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  2. Echo Chain Saw CS4910 2020 Carburetor Replacement, Loosen the air filter cover: étape 2, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Loosen the air filter cover: étape 2, image 2 de 2

    • Use your fingers to loosen the air filter cover knob.

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  3. Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter cover: étape 3, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter cover: étape 3, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter cover: étape 3, image 3 de 3

    • Remove the air filter cover.

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  4. Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter: étape 4, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter: étape 4, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter: étape 4, image 3 de 3

    • Remove the air filter

    • During reassembly, clean the air filter with compressed air or with light brushing before reinstalling it.

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  5. Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the spark plug: étape 5, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the spark plug: étape 5, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the spark plug: étape 5, image 3 de 3

    • Use your fingers to pull up and disconnect the spark plug boot.

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  6. Echo Chain Saw CS4910 2020 Carburetor Replacement, Loosen the sprocket guard: étape 6, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Loosen the sprocket guard: étape 6, image 2 de 2

    • Use a 13 mm wrench to loosen and remove the two nuts securing the sprocket guard.

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  8. Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the sprocket guard: étape 7, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the sprocket guard: étape 7, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the sprocket guard: étape 7, image 3 de 3

    • Pull the sprocket guard straight off its two pegs and remove it.

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  9. Echo Chain Saw CS4910 2020 Carburetor Replacement, Unclip the saw chain: étape 8, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Unclip the saw chain: étape 8, image 2 de 2

    • Put on gloves before performing the next two steps.

    • Pull the saw chain away from the tip of the guide bar to unclip it.

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  10. Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the guide bar: étape 9, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the guide bar: étape 9, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the guide bar: étape 9, image 3 de 3

    • Push the guide bar towards the back of the device to unclip the rest of the saw chain.

    • Pull the guide bar away from the device to separate the saw chain from the clutch drum.

    • Remove the guide bar and the saw chain.

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  11. Echo Chain Saw CS4910 2020 Carburetor Replacement, Unfasten the engine cover: étape 10, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Unfasten the engine cover: étape 10, image 2 de 2

    • Use a flathead screwdriver, or a 3 mm hex key, to remove the three 18 mm screws securing the engine cover.

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  12. Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the engine cover: étape 11, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the engine cover: étape 11, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the engine cover: étape 11, image 3 de 3

    • Pull the engine cover straight up off the engine.

    • Remove the engine cover.

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  13. Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the carburetor: étape 12, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the carburetor: étape 12, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the carburetor: étape 12, image 3 de 3

    • Before performing this step, put on safety glasses to avoid any fuel spraying in your eyes.

    • Use your fingers to pull the top-most fuel pipe out of the carburetor.

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  14. Echo Chain Saw CS4910 2020 Carburetor Replacement: étape 13, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement: étape 13, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement: étape 13, image 3 de 3

    • Lift the choke rod out of its recess in the chassis.

    • Twist the rod counter-clockwise to disconnect it from the carburetor.

    • Remove the choke rod.

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  15. Echo Chain Saw CS4910 2020 Carburetor Replacement, Unfasten the carburetor: étape 14, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Unfasten the carburetor: étape 14, image 2 de 2

    • Remove the four screws securing the carburetor and the air filter adapter:

    • Use a 3 mm hex key to remove the two 20 mm-long screws.

    • Use a 4 mm hex key to remove the two 53 mm-long screws.

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  16. Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter adapter: étape 15, image 1 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter adapter: étape 15, image 2 de 3 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the air filter adapter: étape 15, image 3 de 3

    • Pull the air filter adapter straight off the carburetor and remove it.

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  17. Echo Chain Saw CS4910 2020 Carburetor Replacement, Reposition the carburetor: étape 16, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Reposition the carburetor: étape 16, image 2 de 2

    • With the carburetor's choke valve facing you, tilt the carburetor up and to the left to expose the right-most fuel pipe.

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  18. Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the right fuel pipe: étape 17, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Disconnect the right fuel pipe: étape 17, image 2 de 2

    • Use your fingers to disconnect the right-most fuel pipe.

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  19. Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the carburetor: étape 18, image 1 de 2 Echo Chain Saw CS4910 2020 Carburetor Replacement, Remove the carburetor: étape 18, image 2 de 2

    • Lift the carburetor straight off the throttle rod and remove it.

    • Realign throttle rod upon reassembly.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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