简介
Use this guide to replace the clutch assembly 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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Make sure you have the ignition switch turned off before starting your repair.
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Use a 13 mm wrench to loosen and remove the two nuts securing the sprocket guard.
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Push the guide bar towards the back of the device to unclip the rest of the saw chain.
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Pull the guide bar away from the device to separate the saw chain from the clutch drum.
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Remove the guide bar and the saw chain.
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Use a T25 Torx driver to remove the two 17 mm-long screws securing the bumper spike.
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Remove the two screws securing the inner guide plate:
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Use a Phillips driver to remove the 8 mm-long screw.
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Use a T25 Torx driver to remove the 33 mm-long screw.
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Pull the inner guide plate straight off its two pegs and remove it.
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Use a 2.5 mm hex key to remove the three 14 mm-long screws securing the brake cover.
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Pull the brake cover straight off the chassis and remove it.
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Make sure the chain brake is in the disengaged position before continuing.
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Use a 4 mm hex key to remove the two screws securing the chain brake handle:
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One 19 mm-long screw
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One 23 mm-long screw
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Rotate the chain brake handle towards the guide bar recess to unhook the brake lever.
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Pull the handle away from the chassis to completely remove it.
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Use a Phillips driver to remove the 8 mm-long screw securing the chain brake assembly.
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While holding the spring with one hand, slowly push the brake lever out of its recess until the spring is fully extended.
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Remove the chain brake assembly.
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Use a flathead screwdriver to pry the collar out of its recess.
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Remove the collar.
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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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Pull the engine cover straight up off the engine.
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Remove the engine cover.
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Insert a piston stopping cord or rope through the cylinder head into the combustion chamber until the crankshaft can no longer turn over.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
4等其他人完成本指南。
3条评论
In step 28 where you are removing the nut that holds the clutch drum on which direction is the nut turned to remove it?
Hi there!
It should be the normal counterclockwise movement to loosen that nut.
I have lossen the nut, it turns but does not come off. Do you know what it might be?