Einleitung
Follow this guide to replace the worm gear in the Mantis 7940 Tiller (2017).
For this guide, you will need to use a hammer to tap out certain components that are friction fit into place. In order to do this, you will need to find a way to brace the tiller in place so it doesn’t move around during the process. You can use a vice, or have someone else brace the part while you use the hammer.
You will need replacement lithium grease for this repair.
Was du brauchst
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Use a 4 mm hex wrench to remove the bolt securing the spark plug housing.
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Grab the rubber housing at the end of the spark plug wire.
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Pull firmly to disconnect the wire from the spark plug.
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Twist and remove the knobs and acorn nuts from either side of the handle assembly.
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Remove the upper handle assembly from the lower handle assembly.
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Un-clip the throttle cable from the cable clips on either side of the handle assembly and set the upper handle assembly aside.
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Slide off and remove the tine retaining pin from the outer face of each tine assembly.
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Use a Phillips #2 screwdriver to remove the four screws securing the gear housing cover.
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Use an adjustable wrench to turn the right half (in the orientation pictured) of the tine shaft clockwise, as shown.
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Continue to turn the shaft clockwise until it is unthreaded from the worm gear inside the housing.
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Use a dead blow hammer to tap the right half of the tine shaft towards the worm housing until it can be removed.
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Slide the tine shaft assembly out from the left side of the worm housing and remove it.
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Slide the worm gear up out of the worm gear housing about 1 cm.
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Use a flat head screwdriver to separate the right worm gear thrust washer from the worm gear.
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Remove the worm gear and left worm gear thrust washer from the worm housing.
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Separate the left thrust washer from the worm gear.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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