Maintenance
21
Many bicycle service and repair tasks require special knowledge and tools. Do not begin any adjustments
or service on your bicycle until you have learned from your dealer how to properly complete them. Improper
adjustments or service may result in damage to the bicycle or in failure which can cause serious injury or
death.
Keeping a regular maintenance and cleaning schedule will optimize the performance and safety of your e-bike. Follow
the instructions in this manual as a foundation for how to maintain your e-bike. Consult your Magnum dealer for fur-
ther advice and recommendations on maintenance, cleaning, tools and materials to keep your Magnum Bike operating
at its fullest.
Routinely check the condition of your bicycle before every ride. Make sure nothing is loose. Lift the front wheel two
or three inches off the ground, then allow it to bounce on the ground, listen for if anything sounds loose. Do a visual
and tactile inspection of the whole bike. Secure any loose parts or accessories. If in doubt, seek the assistance of a
qualified bicycle mechanic.
Different materials and metals wear or fatigue from stress at different rates and have different life cycles.
If a component’s life cycle is exceeded, the component can suddenly and catastrophically fail, causing
serious injury or death to the rider. Scratches, cracks, fraying and discoloration are signs of stress-caused
fatigue and indicate that a part is at the end of its useful life and needs to be replaced. While the materials
and workmanship of your bicycle or of individual components may be covered by a warranty for a specified
period of time by the manufacturer, this is no guarantee that the product will last the term of the warran-
ty. Product life is often related to the kind of riding you do and to the treatment to which you subject the
bicycle. The bicycle’s warranty is not meant to suggest that the bicycle cannot be broken or will last forever.
It only means that the bicycle is covered subject to the terms or the warranty. Please be sure to read the
sections covering the intended use of your bicycle.
Once a crack develops, it can and will continue to grow if the e-bike is continued to be used. Any crack that
is discovered is potentially dangerous and will only become more dangerous. Do not continue to use the
e-bike once a crack is discovered.
After every 10 to 20 hours of riding:
• Check the brake pads for wear. It will be time to replace the brake pads when pad material measures less than 1mm thick.
• Inspect cables, housing, and electrical wires for rust, kinks or fraying. Replace any damaged parts.
• Check tires for excess wear, cuts or damage. Replace tires if necessary.
• Check the wheel rims for dents, scratches and material bending. Consult your dealer if any damage is found.
• Ensure that all parts and accessories are secured. Tighten any parts and accessories that are not properly secured.
• Check the frame, particularly in the area around all tube joints, the handlebars, the stem, and the seatpost for any deep
scratches, cracks or discoloration. These are signs of stress-caused fatigue and indicate that a part is at the end of its
useful life and needs to be replaced.
• Check spoke tension.
Maintenance
22
Do not ride an e-bike with any crack, bulge or dent, even a small one. Riding a cracked frame, fork or compo-
nent could lead to complete failure, with risk of serious injury or death.
Wheel truing is a skill which requires special tools and experience. Do not attempt to true a wheel unless
you have the knowledge, experience and tools needed to do the job correctly.
Brakes: Check both the front and rear brakes for proper operation.
Tires and wheels:
•
Ensure that the brakes and their system components are free from damage, properly secured, and
working correctly. When brakes are fully squeezed, both front and rear brake levers should not be
touching the handlebar. Take your bike to a certified and reputable bike mechanic to have the brakes
repaired if you find a problem.
•
If the chain is not shifting smoothly and easily from gear to gear, the derailleur is out of adjustment
and you should consult your dealer.
•
Squeeze the brake levers. The brakes should begin to engage within an inch of brake lever movement.
•
The brake levers should apply full braking force without the levers having to touch the handlebar.
•
Do not ride the bike if the brakes are not properly adjusted and in proper working condition.
•
Ensure that both front and rear tires are inflated to the correct tire pressure. The correct tire pressure
will be embedded on the sidewalls of the tires.
•
Inspect both tires for cuts or damage to the sidewalls and treadings. Replace damaged tires before
riding the bike.
•
Spin each wheel and watch for side-to-side wobble. If a wheel wobbles side to side even slightly, take
the bike to a qualified bike shop to have the wheel trued.
6.1 Cleanings
With a mixture of water and neutral cleaning solution, use a soft cloth or brush to wipe off dirt, dust, and grit from
the exposed surfaces. Rinse soapy residue off with water. Wipe dry with a clean soft cloth.
Do not use high-pressure water or air hoses for cleaning. It can force water and other contaminants into greased
bearings and/or sealed electrical components, which may cause failure, malfunctions, or defects.
