DescriptionThis video provides step-by-step repair instructions for replacing the primer body on an Echo hedge trimmer. The most common reasons for replacing the primer body are when the trimmer won't start, leaks gas, or runs poorly.
All of the information in this primer body replacement video is applicable to the following brands: Echo
Tools used: 10mm wrench, flat head screwdriver, phillips head screwdriver, T-27 Torx bit
Step-By-Step Instructions1
Before you replace the primer body on your hedge trimmer’s carburetor make sure the engine has cooled.
2
Next, you should remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
3
Note the orientation of the primer return and intake hoses then disconnect them from the carburetor.
4
Unthread the knob to detach the air filter housing.
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Use a t-27 torx bit to unthread the carburetor mounting bolts.
6
Set the air filter base aside.
7
Use a 10mm wrench to loosen the locking nut to detach the throttle cable.
8
Use a small flat-head screwdriver to remove the cable retaining spring.
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You can now fully detach the cable and set the carburetor on a sturdy surface.
10
Use a small phillips-head screwdriver to unthread the screws securing the primer bulb and primer body components.
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Lift off the primer bulb and plate then unthread the middle screw securing the primer body.
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Remove the old primer body and set the pump diaphragm and gasket aside.
13
Prepare the new primer body for installation by aligning the pump gasket on the primer body followed by the diaphragm.
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Now position the primer body on the carburetor and thread the middle screw.
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Realign the primer bulb and plate and replace the remaining four screws.
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Before you reinstall the carburetor make sure the retaining spring is still on the throttle cable.
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Now align the cable in the swivel on the carburetor.
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Position the retaining spring on the swivel to secure the cable.
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Align the cable on the bracket and tighten the locking nut.
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Confirm that the mounting bolts have been inserted through the air filter base and the intake gasket is in place on the isolator.
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Now align the carburetor on the bolts then thread the bolts into the isolator and tighten.
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Reposition the air filter housing and thread the knob to secure.
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Connect the intake and primer return hoses to the appropriate ports on the carburetor.
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With the repair completed reattach the wire and boot to the spark plug and your hedge trimmer should be ready for use.