DescriptionThis video provides step-by-step repair instructions for replacing the clutch assembly on an Echo string trimmer. The most common reasons for replacing the clutch are when the string trimmer head won’t spin or won’t stop spinning.
All of the information for this clutch assembly replacement video is applicable to the following brands:
Echo
Tools needed: Torx screwdriver, small slotted screwdriver, rope, ratchet, ½” socket adapter
Step-By-Step Instructions1
Before you replace the clutch on your string trimmer first make sure the engine has cooled.
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Next, remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
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Loosen the screw securing the handle mounting clamp so the handle moves freely on the shaft.
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Next, loosen the screws securing the shaft to the flywheel casing.
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Pull the shaft out of the flywheel casing and slide the handle off of the shaft.
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Now remove the screws securing the engine cover.
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Remove the screws securing the flywheel casing.
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Next, use a socket or spark plug wrench to help remove the spark plug.
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Now confirm that the piston is in the “down” position.
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Insert a cord or rope into the cylinder to prevent the piston from moving.
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You can use a half-inch socket drive to help loosen the old clutch – then unthread the clutch from the crankshaft.
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Install the new clutch by threading it onto the crankshaft – then tighten.
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Remove the cord or rope from the cylinder.
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Replace the spark plug.
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Be careful not to over tighten the plug.
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Realign the flywheel casing and replace the screws to secure.
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Reposition the engine cover and reinstall the screws to secure it.
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Now slide the handle onto the shaft and insert the shaft into the flywheel casing.
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You can use the line and arrows to properly align the shaft.
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Once positioned, tighten the screws to secure the shaft.
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Properly position the handle and tighten the handle mounting clamp screw.
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Attach the wire and boot to the spark plug and your string trimmer should be ready for use.