Bullet Electric Scooter, User Manual

Page: 15 / 19

Electric Scooter
E&OE © 2019 Bullet 15
Maintenance
To adjust and service the scooter, you will need the following tools:
•
Allen Keys: 3/4/5/6 mm
•
Wrenches: 10/13/13 mm Open end wrench
•
Large Adjustable Crescent Wrench
•
Philips Head Screwdrivers
•
Oil, Grease or Lubricant
Adjusting the Head Unit
The head unit will come adjusted from the factory. However,
riding on rough terrain and general use may cause the head
unit to become loose over time. It may be necessary to adjust
the head unit from time to time.
To adjust the head unit:
1. Rotate the handle bar as far right as it will go to expose the
head unit.
2. Using a large adjustable wrench, gently turn the bearing
lock clockwise to tighten. DO NOT OVER-TIGHTEN OR IT
WILL DAMAGE THE BEARINGS.
Adjusting the Chain
The chain will come adjusted from the factory. However, it may be necessary to adjust the chain from
time to time. The chain must be well aligned onto the sprockets in order to avoid uneven wear. This will
result in shortened chain life.
How tight should the chain be?
•
If the chain is skipping or jumping on the sprockets, this is too loose and may be harmful.
•
If the chain is making a humming sound when the wheel is turning, this is too tight and may cause
the chain to snap.
•
The correct tension is achieved by adjusting the chain from its loose position to when it becomes
lightly tense.
To tighten the chains:
1. Slightly loosen the two axle bolls on the both sides of the rear wheel. Then, slowly adjust the two
adjusting screws on each side of the rear tyre until chain reaches the proper tension.
2. Rotate the rear wheel to make sure the chain is aligned.
3. Finally, lock and tighten the rear axle bolts prior to riding.
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