SMART ebike - Page 64

Drive belt routed incorrectly
Drive belt routed correctly
ebike, left-hand side
A
Clearance between : and ;
:
Pulley stop
;
Drive belt
=
Dropout bolt
?
Dropout
A
Lock nut
B
Adjustment screw
i
Observe the instructions on handling
the drive belt (Y page 43)
X
Loosen bolts = at both dropouts ?
using a 6 mm (0.24 in) Allen key (5 bolts
in total).
X
Loosen lock nut A at both dropouts ?
using a 10 mm (0.39 in) open-end wrench.
To do this, use a second 10 mm (0.39 in)
open-end wrench to counterhold adjust-
ment screw B.
X
To increase the drive belt tension:
unscrew both adjustment screws B from
dropouts ? by the same amount (turning
them in an anti-clockwise direction).
X
To reduce the drive belt tension: screw
both adjustment screws B into drop-
outs ? by the same amount (turning them
in a clockwise direction). Push the rear
wheel towards the front wheel.
X
When checking the tension of drive
belt ;, turn the pedal crank a quarter of
a turn 4 times, each time pressing down
on drive belt ;.
i
The drive belt is correctly tensioned if
it can be pressed down in the centre
between the two pulleys by approx.
10 mm (0.39 in). The force exerted with the
thumb when pressing down on the drive
belt should be approx. 1 kg (2.2 lbs).
smart recommends that you have the drive
belt tension checked at a qualified spe-
cialist workshop.
X
To check and adjust the routing: turn the
pedal crank 10 to 15 times in both direc-
tions, checking the routing of drive
belt ; as you do so.
i
The drive belt is correctly routed if
there is an optimum clearance “A” of
0.5 mm (0.02 in) between drive belt ; and
the stop on rear belt pulley :. The max-
imum clearance is 1 mm (0.04 in).
62
Tightening and aligning the drive belt
>> Practical advice.