Retrospec KOA REV+ Assembly Instructions Manual page 15

Remove the springs from the worn-out pads and fit them onto the new pads.
Replace the new pads, keeping them slightly inclined into the seat of the caliper.
Check that the spring hooks correctly onto the small piston. (When pulling
downwards the pads should not come out). Refit the caliper to the fork (or frame
for rear brake). Turn adjuster screw C (Fig.18) until the pads are centered on the
disc and the wheel spins freely. Again, there may be some noise from the brake
until it "bed" in. You may have to adjust the cable tension and lever adjustment-
follow previous Step A. Brake Lever and its Brake Pad Travel Adjustment.
We strongly advise you have your brakes periodically checked and maintained by
your dealer or a professional bicycle mechanic.
Step 7: Derailleur Gears Maintenance and Adjustment
The gears/derailleur(s) on your bicycle should be correctly adjusted from the
factory. However, as cables do seat and stretch, it's important to check the
function of your shifting after your first ride. Note that it's not unusual for your
shifting system to need some adjustment after being used a few times.
We strongly recommend you have your e-bike serviced by your dealer or
professional bike shop/mechanic.
To ensure long life and efficiency for your drivetrain system, it must be kept clean
and properly lubricated. Before attempting any adjustments, make sure you
understand the drivetrain components functions and feel confident to attempt
such maintenance.
• Left shifter controls the front derailleur and chain wheel(s);
Right shifter controls the rear derailleur and rear cogset.
• The largest/larger rear sprockets on the cogset are the low [speed] gears
used for hill climbing and low speed technical riding; the smallest/smaller rear
cogs are for cruising and high(er) speed and downhill riding.
Fig. 18
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