Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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In order to replace the throttle trigger you will need to disassemble the handle housing where the trigger is at. There are a total of six torx head screws that hold this handle together, sometimes the screws are also slotted so that you can use a small slotted screwdriver to remove them. Once you have removed the screws the handle will come apart off of the shaft. The trigger is slid onto a post of the right side handle housing, there is a spring there as well, make sure to not loose the spring as you will need to reuse it. Be aware of how the spring is inserted into the original trigger so that you can put it back into the new trigger the same way. Reassemble everything is reverse steps and you should be ready go to work again.
I have included a diagram of the handle and trigger that might help you while doing this repair.
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