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Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement

简介

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

The chain brake assembly is essential for safe operation. If it's not installed properly, it could fail to prevent serious injury.

你所需要的

  1. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Turn off the chainsaw: 步骤 1 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Turn off the chainsaw: 步骤 1 中的图像 2，2

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

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

    编辑

  2. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Loosen the air filter cover: 步骤 2 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Loosen the air filter cover: 步骤 2 中的图像 2，2

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

    编辑

  3. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the air filter cover: 步骤 3 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the air filter cover: 步骤 3 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the air filter cover: 步骤 3 中的图像 3，3

    • Remove the air filter cover.

    编辑

  4. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the air filter: 步骤 4 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the air filter: 步骤 4 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the air filter: 步骤 4 中的图像 3，3

    • Remove the air filter

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

    编辑

  5. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Disconnect the spark plug: 步骤 5 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Disconnect the spark plug: 步骤 5 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Disconnect the spark plug: 步骤 5 中的图像 3，3

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

    编辑

  6. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Loosen the sprocket guard: 步骤 6 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Loosen the sprocket guard: 步骤 6 中的图像 2，2

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

    编辑

  7. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the sprocket guard: 步骤 7 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the sprocket guard: 步骤 7 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the sprocket guard: 步骤 7 中的图像 3，3

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

    编辑

  8. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unclip the saw chain: 步骤 8 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unclip the saw chain: 步骤 8 中的图像 2，2

    • Put on gloves before performing the next two steps.

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

    编辑

  10. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the guide bar: 步骤 9 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the guide bar: 步骤 9 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the guide bar: 步骤 9 中的图像 3，3

    • 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.

    编辑

  11. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the bumper spike: 步骤 10 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the bumper spike: 步骤 10 中的图像 2，2

    • Use a T25 Torx driver to remove the two 17 mm-long screws securing the bumper spike.

    编辑

  12. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the bumper spike: 步骤 11 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the bumper spike: 步骤 11 中的图像 2，2

    • Pull the bumper spike away from the chassis and remove it.

    编辑

  13. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the inner guide plate: 步骤 12 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the inner guide plate: 步骤 12 中的图像 2，2

    • Remove the two screws securing the inner guide plate:

    • Use a Phillips driver to remove the 8 mm-long screw.

    • Use a T25 Torx driver to remove the 33 mm-long screw.

    编辑

  14. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the inner guide plate: 步骤 13 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the inner guide plate: 步骤 13 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the inner guide plate: 步骤 13 中的图像 3，3

    • Pull the inner guide plate straight off its two pegs and remove it.

    编辑

  15. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the brake cover: 步骤 14 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the brake cover: 步骤 14 中的图像 2，2

    • Use a 2.5 mm hex key to remove the three 14 mm-long screws securing the brake cover.

    编辑

  16. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the brake cover: 步骤 15 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the brake cover: 步骤 15 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the brake cover: 步骤 15 中的图像 3，3

    • Pull the brake cover straight off the chassis and remove it.

    • Make sure the chain brake is in the disengaged position before continuing.

    编辑

  17. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the chain brake handle: 步骤 16 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the chain brake handle: 步骤 16 中的图像 2，2

    • Use a 4 mm hex key to remove the two screws securing the chain brake handle:

    • One 19 mm-long screw

    • One 23 mm-long screw

    编辑

  18. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement: 步骤 17 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement: 步骤 17 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement: 步骤 17 中的图像 3，3

    • Rotate the chain brake handle towards the guide bar recess to unhook the brake lever.

    • Pull the handle away from the chassis to completely remove it.

    编辑

  19. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the chain brake assembly: 步骤 18 中的图像 1，2 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Unfasten the chain brake assembly: 步骤 18 中的图像 2，2

    • Use a Phillips driver to remove the 8 mm-long screw securing the chain brake assembly.

    编辑

  20. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the chain brake assembly: 步骤 19 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the chain brake assembly: 步骤 19 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the chain brake assembly: 步骤 19 中的图像 3，3

    • Be careful with this step, as there's tension within the spring. Work slowly to avoid the spring from ejecting.

    • While holding the spring with one hand, slowly push the brake lever out of its recess until the spring is fully extended.

    • Remove the chain brake assembly.

    • During reassembly, insert the spring into its recess first and compress it enough to reinsert the brake lever.

    编辑

  21. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the retaining plate: 步骤 20 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the retaining plate: 步骤 20 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the retaining plate: 步骤 20 中的图像 3，3

    • Pull the retaining off the chassis and remove it.

    编辑

  22. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the torsion spring: 步骤 21 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the torsion spring: 步骤 21 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the torsion spring: 步骤 21 中的图像 3，3

    • Pull the torsion spring off the chassis and remove it.

    编辑

  23. Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the collar: 步骤 22 中的图像 1，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the collar: 步骤 22 中的图像 2，3 Echo Chain Saw CS4910 2020 Chain Brake Assembly Replacement, Remove the collar: 步骤 22 中的图像 3，3

    • Use a flathead screwdriver to pry the collar out of its recess.

    • Remove the collar.

    编辑
结论

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

作者

Alex Diaz-Kokaisl

于01/16/22注册

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