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FLEXI
S501 20" Electric Folding Bicycle
Troubleshooting
Malfunction
Possible Cause
Pedal assistance not
1.
working
2.
3.
4.
Reduced range and/or
1.
speed
2.
3.
4.
5.
Gear change (where
1.
applicable) rough /
not changing
2.
Chain slip / jumping
1.
off sprockets
2.
3.
4.
5.
Clicking noises when
1.
pedaling
2.
3.
4.
5.
Grinding noise when
1.
pedaling
2.
3.
4.
5.
Brakes not effective
1.
2.
3.
4.
5.
Brakes squeal
1.
2.
3.
Brakes chatter / vibrate
1.
2.
3.
Wheel vibration / wobble
1.
2.
3.
4.
Steering not accurate
1.
2.
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Under-charged battery.
Battery no longer serviceable.
Battery charger faulty.
Motor electrics or switches damaged
/ faulty.
Under-charged battery.
Battery no longer serviceable.
Low tyre pressure.
Brakes dragging.
Terrain, headwind, etc.
Derailleur cables sticking /
stretched / damaged.
Derailleurs / shifter not correctly set.
Worn sprockets.
Stretched chain.
Front sprocket loose / out of true.
Sprocket teeth bent / broken.
Derailleur / shifter not
correctly adjusted.
Stiff chain link.
Loose pedals / bearings.
Loose bottom bracket / bearings.
Bent bottom bracket or pedal bolt.
Loose pedal arm bolts.
Pedal bearings too tight.
Bottom bracket bearings too tight.
Rear wheel not straight.
Chain too tight.
Derailleur dirty.
Pads worn.
Pads / discs dirty.
Brake cables binding /
stretched / damaged.
Brakes levers binding.
Brakes require adjustment.
Pads / discs dirty.
Brakes not centred.
Caliper fasteners loose.
Brake mounting bolts loose.
Brakes out of adjustment.
Steering head bearings loose.
Axle bent or broken.
Wheel out of true.
Wheel hub bearings loose /
not serviceable.
Quick-release (if equipped)
mechanism loose.
Wheels not aligned to frame.
Steering head loose / binding.
Possible Solution
Charge battery. Follow battery care procedures.
1.
Have battery checked. Replace if faulty.
2.
Have charger checked. Replace if faulty.
3.
Seek diagnosis and repair from authorised
4.
service centre.
Charge battery. Follow battery care procedures.
1.
Have battery checked. Replace if faulty.
2.
Inflate to recommended pressure.
3.
Adjust.
4.
Normal.
5.
Lubricate / adjust / replace cables.
1.
Adjust.
2.
Replace.
1.
Replace.
2.
Re-true / tighten.
3.
Replace.
4.
Adjust.
5.
Lubricate chain.
1.
Tighten / adjust bearings.
2.
Tighten / adjust bearings.
3.
Replace.
4.
Tighten.
5.
Adjust.
1.
Adjust.
2.
Align so chain straight.
3.
Adjust.
4.
Clean and lubricate.
5.
Replace.
1.
Clean and degrease.
2.
Lubricate / adjust / replace cables.
3.
Clean pivots.
4.
Adjust.
5.
Clean and degrease.
1.
Centre brakes and adjust.
2.
Tighten.
3.
Tighten.
1.
Centre brakes and adjust.
2.
Adjust bearings.
3.
Replace.
1.
True wheel.
2.
Adjust / replace.
3.
Adjust.
4.
Align wheels.
1.
Adjust.
2.
15
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