JOYOR S5 Maintenance Guide
A punctured front inner tube does not always require a workshop visit. The JOYOR S5 uses a split-rim front wheel, so the tyre can be opened without forcing the bead over a one-piece rim. This guide shows the complete replacement process and, just as importantly, the checks that prevent the new tube from being pinched, twisted or punctured again.
Video Tutorial and Repair Timeline
Watch the complete repair once before removing the wheel. The chapter links below take you to the matching section of this written guide; each repair step also includes a direct link to the exact moment in the video.
Before You Start
Parts and tools
- A compatible 10-inch JOYOR S5 inner tube
- Two 18 mm spanners or suitable axle tools
- A 6 mm hex key for the split-rim bolts
- A pump with an accurate pressure gauge
- Work gloves, a clean cloth and a small parts tray
Confirm before dismantling
- Match the new tube size and valve type to the original
- Check that your wheel has the same split-rim layout as the video
- Photograph the order of axle washers and retaining hooks
- Read the pressure marking on the tyre sidewall or model manual
Switch the scooter off, disconnect the charger and support the scooter securely on a level surface. Keep grease and dirty tools away from the brake disc. Do not operate the brake lever while the wheel is removed, and do not ride until the wheel, brake and axle have passed the final checks below.
The linked replacement tube is listed for several JOYOR S-series variants, but this procedure follows the JOYOR S5 front-wheel assembly shown in the video. Production versions can differ. If your axle hardware, brake layout, valve position or rim design does not match, stop and obtain model-specific instructions.
How to Replace the JOYOR S5 Front Inner Tube
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Remove the Front Wheel
Watch from 00:08- Remove the plastic cover from the front wheel assembly.
- Use the 18 mm tools to loosen the axle nuts on both sides.
- Remove the nuts, washers and retaining hooks in order. Keep the left-side and right-side hardware separate.
- Support the wheel, pull the main axle bolt completely out and lower the wheel carefully from the fork.
Protect the brake disc as soon as the wheel is free. A disc that is bent, contaminated or knocked against the floor can cause brake rub or reduced braking performance after reassembly.
Checkpoint: The wheel is free, the brake disc is protected and every axle part is stored in its original order.
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Fully Deflate the Tube and Open the Split Rim
Watch from 00:51Remove all remaining air before loosening the rim. A split rim must never be opened while the tube is pressurised.
- Press the valve until no pressure remains in the old tube.
- Use a 6 mm hex key to loosen the bolts joining the two rim halves.
- Loosen the bolts gradually in a cross pattern instead of removing one side completely first.
- Separate the two metal rim halves and remove them from the tyre and old tube.
A power tool can speed up bolt removal, as shown in the video, but use a correctly fitting bit and low speed. Final tightening should be controlled by hand so the threads are not damaged.
Checkpoint: The rim halves separate without force and the mating surfaces are not scratched, bent or burred.
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Find the Cause of the Puncture and Prepare the New Tube
Watch from 01:20Do not install the new tube until you know why the old one failed. Otherwise the same nail, sharp edge or assembly error may puncture the replacement immediately.
- Inspect the tread and sidewalls for nails, glass, cuts and exposed cords.
- Check the inside of the tyre carefully. Use a cloth rather than sliding an unprotected finger over an unknown sharp object.
- Inspect both rim halves for burrs, corrosion, sharp edges or trapped debris.
- Compare the new tube with the old one: overall size, width and valve position must match.
Add only enough air for the new tube to hold a soft circular shape. This small amount of air reduces folds and makes it easier to see whether the tube is twisted. Do not inflate it to riding pressure outside the tyre.
Checkpoint: The puncture source has been removed, the tyre and rim are clean, and the new tube is lightly inflated without twists.
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Fit the Tube and Confirm Wheel Direction
Watch from 01:41- Find the rotation arrow on the tyre and confirm the forward direction.
- Confirm which side of the completed wheel must carry the brake disc.
- Tuck the lightly inflated tube evenly inside the tyre.
- Keep the valve straight and aligned with the rim opening. The tube must not be twisted around the inside of the tyre.
Direction matters. If the tread is reversed or the brake-disc side is assembled incorrectly, the wheel will have to be dismantled again.
Checkpoint: The tread arrow points in the correct direction, the brake-disc side is identified and the valve sits straight.
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Reassemble the Split Rim Without Pinching the Tube
Watch from 02:00- Insert the rim half without the brake disc into the centre of the tyre.
- Place the rim half with the brake disc onto the opposite side.
- Guide the valve through its rim cut-out without pulling or bending it.
- Look around the complete split line and make sure no section of inner tube is trapped between the metal halves.
- Start every rim bolt by hand, then tighten gradually in a star or cross pattern so the halves close evenly.
If the halves do not meet evenly, stop. Do not use the bolts to crush the rim closed against resistance. Reopen it and check for a trapped tube, misaligned valve or incorrectly seated tyre.
Checkpoint: The rim gap is even, the valve is centred and no rubber is visible in the split line.
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Inflate in Stages and Seat the Tyre Evenly
Watch from 02:25- Add a small amount of air and inspect both sides of the tyre.
- Check that the bead line is even around the rim and the valve remains straight.
- If the tyre bulges, dips or pulls the valve sideways, release the air and correct the seating.
- Continue inflating to the pressure specified on the tyre sidewall or in the manual for your exact model and tyre.
The thumb-pressure check shown in the video is useful for monitoring firmness, but it is not a substitute for a gauge. Correct cold pressure helps prevent pinch flats, uneven wear and unstable handling.
Checkpoint: The tyre is uniformly seated, the valve is straight and the gauge shows the specified cold pressure.
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Reinstall the Wheel and Complete the Safety Test
Watch from 03:00- Rebuild the first side of the axle with its washers and retaining hook in the photographed original order.
- Guide the wheel into the fork and carefully place the brake disc between the brake pads.
- Push the axle fully through the fork and wheel hub.
- Install the retaining hook, washers and nut on the opposite side in their original order.
- Use two 18 mm tools to tighten both axle ends securely and evenly.
- Spin the wheel by hand and apply the front brake several times before testing the scooter.
The wheel should rotate smoothly without lateral movement. Stop if the brake disc sits outside the caliper, the wheel is not centred, hardware is missing, or the axle does not seat correctly.
Checkpoint: The axle is secure, the wheel is centred, the brake works firmly and the tyre rotates without wobble.
Final Safety Checklist
Complete every check before returning the scooter to normal use.
- Split-rim bolts are evenly and securely tightened
- No inner tube is visible at the rim joint
- Valve stem is straight and the cap is fitted
- Tyre bead line is even on both sides
- Cold pressure matches the tyre or manual specification
- Axle washers and retaining hooks are in the original order
- Both axle nuts are securely tightened
- Wheel has no side-to-side play or visible wobble
- Brake disc runs through the caliper correctly
- Front brake engages firmly and releases normally
Test at walking speed in a safe, traffic-free area. Brake gently, listen for rubbing or clicking, and stop immediately if the wheel feels unstable. Recheck tyre pressure and visible fasteners after the first short ride.
Troubleshooting After Reassembly
| Symptom | Likely cause | What to check |
|---|---|---|
| Tube loses air immediately | Tube pinched in the rim, foreign object left in the tyre, or valve damage | Deflate and reopen the rim. Inspect the complete split line, tyre interior and valve base. |
| Valve stem leans sideways | Tube is twisted or the valve is not aligned with the rim opening | Release the air and reposition the tube. Do not pull the valve straight under tension. |
| Tyre rises and dips while spinning | Bead is uneven, rim halves are not seated equally, or pressure is incorrect | Deflate, inspect the bead line on both sides and confirm the rim joint is even. |
| Brake disc rubs continuously | Wheel is not centred, axle hardware is misplaced, or caliper alignment has changed | Confirm spacer order, axle seating and disc position. Correct the cause before riding. |
| Wheel clicks or has side play | Loose split-rim bolts, loose axle nuts or missing hardware | Stop using the scooter. Check every rim and axle fastener and compare both sides with the original photos. |
How to Reduce Future Front-Tube Punctures
- Check cold pressure regularly. Underinflation allows the tube to fold and pinch against the rim when the wheel hits a pothole or kerb.
- Inspect the tread before longer rides. Remove embedded debris before it works through the tyre casing.
- Do not exceed the marked pressure. Use the specification on the fitted tyre or the correct model manual, not a generic number from another scooter.
- Replace a damaged outer tyre. Deep cuts, exposed cords or a distorted bead cannot be fixed by installing a new tube.
- Investigate repeated punctures. Repeated holes in the same area usually indicate debris, a sharp rim edge, incorrect pressure or an installation problem.
Frequently Asked Questions
Which inner tube fits the JOYOR S5?
Use a 10-inch inner tube listed as compatible with your exact JOYOR S5 version, then compare its dimensions and valve with the removed tube before installation. Model names alone are not enough if the wheel or tyre has previously been changed.
Do I need tyre levers for this repair?
Normally no. The front wheel shown in this tutorial uses a split rim, so the metal halves separate from the tyre after the tube is completely deflated and the rim bolts are removed.
What pressure should I use after fitting the new tube?
Inflate to the cold-pressure specification printed on the fitted tyre or stated in the manual for your exact scooter and tyre. Do not rely only on how firm the tyre feels by hand, and never exceed the marked maximum.
Why did my new tube puncture during installation?
The most common assembly causes are trapping the tube between the rim halves, leaving a sharp object inside the tyre, twisting the tube, misaligning the valve or inflating before the tyre is seated evenly.
Can I ride if the brake disc rubs after the wheel is reinstalled?
Do not continue if the rubbing is heavy, continuous, or accompanied by poor wheel rotation. Recheck the axle hardware, wheel centring and disc position. If you cannot identify the cause, have the brake and wheel inspected by a qualified technician.
Need the Correct Tube or Axle Tool?
Check your scooter model, tyre marking and valve type before ordering. If your front wheel differs from the one shown in the tutorial, send clear photos of the wheel, valve and model label to JOYOR support before choosing a part.
