Price Match Guarantee
Order by 2:00 a.m., and we'll ship the same day
365-Day Return Policy
Price Match GuaranteeGET PRO PRICING
Echo String Trimmer Carburetor Replacement #RB-K93
Skill Level
Total Parts Cost
$64.64Estimated Savings
$112.5003:35
- Description
This video provides step-by-step repair instructions for replacing the carburetor on an Echo string trimmer. The most common reasons for replacing the carburetor are when the string trimmer engine won’t start, stops after a few seconds, or runs poorly.
All of the information for this carburetor replacement video is applicable to the following brands:
Echo, Zama
Tools needed: needle-nose pliers, combo wrench, small slotted screwdriver, Torx screwdriver
All of the information for this carburetor replacement video is applicable to the following brands:
Echo, Zama
Tools needed: needle-nose pliers, combo wrench, small slotted screwdriver, Torx screwdriver
Step By Step Instructions
1
Before you replace the carburetor on your string trimmer first make sure the engine has cooled.
2
Next, remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
3
Now rotate the knob to release the air filter cover.
4
Next, depress the throttle trigger hold the throttle arm then release the trigger to detach the end of the throttle cable from the swivel.
5
Use pliers to lift out the cable.
6
Loosen the locking nut to fully release the cable from the throttle assembly.
7
Note the orientation of the fuel lines attached to the primer assembly then detach them – be prepared for some fuel to spill.
8
Now, unthread the carburetor mounting bolts lift off the gasket and pull the old carburetor off of the bolts.
9
You’re now ready to install the new carburetor.
10
Slide the new carburetor onto the mounting bolts then slide on the gasket.
11
Align the assembly on the intake insulator and tighten the bolts to secure.
12
Reconnect the fuel lines to the appropriate ports on the primer assembly – it’s important to keep the lines properly oriented.
13
Make sure the adjustment nut on the throttle cable is properly positioned then insert it into the slot in the throttle assembly.
14
Tighten the locking nut to secure the cable.
15
Rotate the throttle arm and confirm that the swivel is properly aligned then insert the cable into the swivel.
16
Now depress the throttle trigger to fully seat the cable.
17
Be aware that if the throttle cable is too tight, you can adjust it by repositioning the adjustment nut.
18
Make sure the air filter is fully seated in the cover. then realign the cover and rotate the knob to secure.
19
Reattach the wire and boot to the spark plug.
20
Be aware that if the engine runs improperly, you may need to calibrate the high speed jet on the carburetor to manufacturer’s specifications.
21
Are placement cap for the high speed adjustment screw is included with the new carburetor and can be inserted into the screw hole after calibration.
Description
This video provides step-by-step repair instructions for replacing the carburetor on an Echo string trimmer. The most common reasons for replacing the carburetor are when the string trimmer engine won’t start, stops after a few seconds, or runs poorly.
All of the information for this carburetor replacement video is applicable to the following brands:
Echo, Zama
Tools needed: needle-nose pliers, combo wrench, small slotted screwdriver, Torx screwdriver
All of the information for this carburetor replacement video is applicable to the following brands:
Echo, Zama
Tools needed: needle-nose pliers, combo wrench, small slotted screwdriver, Torx screwdriver
Step-By-Step Instructions
1
Before you replace the carburetor on your string trimmer first make sure the engine has cooled.
2
Next, remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
3
Now rotate the knob to release the air filter cover.
4
Next, depress the throttle trigger hold the throttle arm then release the trigger to detach the end of the throttle cable from the swivel.
5
Use pliers to lift out the cable.
6
Loosen the locking nut to fully release the cable from the throttle assembly.
7
Note the orientation of the fuel lines attached to the primer assembly then detach them – be prepared for some fuel to spill.
8
Now, unthread the carburetor mounting bolts lift off the gasket and pull the old carburetor off of the bolts.
9
You’re now ready to install the new carburetor.
10
Slide the new carburetor onto the mounting bolts then slide on the gasket.
11
Align the assembly on the intake insulator and tighten the bolts to secure.
12
Reconnect the fuel lines to the appropriate ports on the primer assembly – it’s important to keep the lines properly oriented.
13
Make sure the adjustment nut on the throttle cable is properly positioned then insert it into the slot in the throttle assembly.
14
Tighten the locking nut to secure the cable.
15
Rotate the throttle arm and confirm that the swivel is properly aligned then insert the cable into the swivel.
16
Now depress the throttle trigger to fully seat the cable.
17
Be aware that if the throttle cable is too tight, you can adjust it by repositioning the adjustment nut.
18
Make sure the air filter is fully seated in the cover. then realign the cover and rotate the knob to secure.
19
Reattach the wire and boot to the spark plug.
20
Be aware that if the engine runs improperly, you may need to calibrate the high speed jet on the carburetor to manufacturer’s specifications.
21
Are placement cap for the high speed adjustment screw is included with the new carburetor and can be inserted into the screw hole after calibration.
Applicable Product Model
Parts Needed
Carburetor
$64.64
Recommended Tools and Accessories
Carburetor Repair Kit
$14.69
Primer Bulb
$2.09
Fuel Tank
$31.52
Fuel Tank
$54.38
Total$0.00
Related Articles & Videos
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com