I. Introduction
A flat tire on an electric scooter can stop the fun your kids are having by riding it. However, you can bring the fun back by simply replacing the tube or the wheel. In this article, we are discussing how to fix a flat tire on Razor Electric Scooter E100 and E300.
II. Tips before you attempt disassembling anything
- The reason for the flat tire can be a puncture or no air for some unknown reason. You can inflate the tire to the required pressure and watch how it behaves. If there is a puncture, the tire will be flat again and needs to be fixed.
- Study your owner’s manual and understand the step-by-step disassembling and reassembling of the front and rear wheels.
- Keep all the tools ready.
- Keep the recommended size of the replacement tube or wheel ready.
- Put off the switch to disconnect the scooter from the battery.
- Before disassembling anything, take as many photos from different angles from a smartphone. This will guide you when you reassemble them.
- Place the electric scooter on a bench or a platform for ease of work.
- When you unfasten an item, place the fasteners in the order of assembly. This will help you when you put them back.
- Do not mix the fasteners and items of one unit with another unit. Place them separately.
- Always do a test ride after a repair or maintenance. Ensure all the fasteners are tightened properly.
III. How to fix a flat tire on a razor electric scooter E100
Front tire
Step 1. Use two 5 mm Allen keys, loosen the axle bolt, and take out the front wheel. Place the fasteners safely.
Step 2. To take out the tube, you have to disassemble the hub. The hub has two parts (upper and lower) fastened together by 4 screws. Remove the screws and take out the hub. Take out the old tube and examine the tire for the source of puncture and remove it.
Push the new tube into the tire, inflate a little and ensure the tube is completely inside the tire. Assemble the hub and mind the location of the valve stem. Tighten the screws.
Inflate the tire to the correct pressure and assemble the wheel onto the scooter. Now you are ready for a test ride.
Note: If the tire is damaged, it is better to replace the complete wheel.
Rear wheel
The rear wheel of Razor E100 is made of Urethane and there is no tube. If there is damage to the rear wheel, the whole rear wheel with the hub motor must be replaced. You can take out the wheel by following the steps below:
Step 1. Remove the deck plate and battery strap. Use a Philips screwdriver to remove the six screws on the deck plate and take it out. The screws may be of different sizes, so keep them in order. Using the same Philips screwdriver, remove the two screws and take out the battery strap. Keep the screws in order.
Step 2. Disconnect the battery from the control module and take out the battery with due care. Disconnect the motor wire connection with the control module.
Using a pointed rod, depress the connector tabs and remove the wire from the connector. Pull the wire out of the battery space.
Step 3. Use a Philips screwdriver and remove the three screws that have fastened the motor housing to the left side frame.
Step 4. Use a 13 mm size wrench and loosen the locknut on the outer right side frame. Take the help of another wrench to prevent the rotation of the inside locknut.
Now you can take out the damaged rear wheel with the hub motor and replace it with a new rear wheel with a hub motor. Take the reverse steps and reassemble. Make use of the photos you took before disassembling.
You can download a PDF copy of the owner’s manual for Razor Power Core E100 from this link.
YouTube videos
IV. How to fix a flat tire on a razor electric scooter E300
Front tire or tube replacement
Step 1. Use two 17 mm wrenches to loosen and take out the lock nut, 2×washers, and spacer from the left and right side. Take out the wheel and the front axle bolt. Keep the fasteners safely in order.
Step 2. Unfasten the four screws using a Philips screwdriver and disassemble the hub upper and lower parts. Take out the old tube, examine the inner tire surface for pin or nail, remove it, and fit the tube into the tire.
You can inflate the tube a bit and it goes inside. Ensure the tube is not projecting out of the tire and assemble the hub. Inflate the tire to the correct pressure.
Assemble the wheel back and refer to the photos you have taken for reference.
Note: If the tire is damaged, it is better to replace the complete wheel.
Rear tire or tube replacement
Step 1. Use a Philips screwdriver and take out the chain guard. Keep the two screws safely.
Step 2. Use an Allen wrench and detach the brake cable from the brake.
Step 3. Use two 8 mm wrenches and loosen the brake housing anchor and disconnect it from the wheel. Keep the fasteners together.
Step 4. Use a 10 mm wrench and loosen the two numbers of axle adjuster screws (counterclockwise) equally by 5 turns.
Step 5. Use two 17 mm wrenches to loosen the axle, slide the wheel forward and loosen the chain. Remove the wheel, disassemble the axle and the fasteners and keep the axle and fasteners in order.
Step 6. Remove the brake drum by turning it counterclockwise. You can use a screwdriver, a small hammer, and use the hole on the brake drum to hammer it counterclockwise. Remove the brake drum, disassemble the hub by unfastening the 4 screws.
Take out the tube. Examine the tire for pins or nails. Push the tube inside the tire properly and you can inflate it a bit to ensure it is completely inside. Assemble the hub and brake drum (mind the location of valve stem). Inflate the tire to the correct pressure.
Assemble back the wheel by referring to the photos. Test ride.
Note: If the tire is damaged, it is better to replace both tire and tube.
You can download a PDF copy of the owner’s manual for Razor E300 from this link.
YouTube videos
V. Conclusion
A flat tire on an electric scooter may happen at any time. It is better to be ready with the spare kit, and the tools, so that replacement can be done immediately.
