Replacing the twist grip throttle on your Razor W15128785043 electric scooter can be done with these steps. First, ensure your safety by turning off the power switch and unplugging the charger. Next, use a Phillips screwdriver to remove the seven screws from the battery cover, located near the power switch, and then remove the four screws (two front, two back) of the battery cover. Carefully detach the cover, ensuring no wires are damaged. Locate and disconnect the throttle from the controller. This will enable you to remove the old throttle and install the new one. Use a 3 mm Allen wrench to loosen the set screw on the throttle, allowing you to slide the throttle away from the grip. To remove the handlebar grip, insert a flat screwdriver between the grip and the handlebar. Apply a small amount of lubricant or soapy water to ease removal, then carefully slide the grip off. Now, install the new twist grip throttle by sliding it onto the handlebar and aligning it correctly. Secure it by tightening the set screw on the throttle using the 3 mm Allen wrench. Reconnect the throttle to the controller. Reassemble the battery cover by carefully placing it back in position and securing it with the screws. Make sure wires are not pinched. Finally, charge the battery for a full 12 hours before using your scooter. For further assistance, visit the Razor website at www.razor.com or call their toll-free number at 866-467-2967, available Monday to Friday from 8:00 am to 5:00 pm Pacific Time.
