Dealing With Punctures; Brakes - Stromer ST3 User Manual

For Stromer tyres in sizes e 57– 584 a pres-
sure of 2.2 bar/32 psi is recommended.
Tires are wear parts. You should therefore regu-
larly check the pressure, tread and condition of your
tires. Not every tire is designed for every type of use.
The tires of an S-Pedelec may only be exchanged
for authorized products that were approved by the
manufacturer. Here it is important to ensure the
correct size. Seek advice from your Stromer dealer
when selecting tyres. It is essential to get advice
from a Stromer dealer when selecting tires.
There are special tires for use in winter. Ask
your Stromer dealer for tires with a special profile
and a suitable rubber compound.
The following tire dimensions are permitted for
the Stromer:
Customs designation ETRTO size
27.5 x 2.25" (650b) e 57–584

Dealing with punctures

Contact your Stromer dealer or an authorised
S-Pedelec workshop to fix flat tyres.

Brakes

Your Stromer is equipped with a hydraulic disk
brake.
Brakes are vital to your safety on the bike.
You should therefore maintain them on a regular
basis. This requires specialist knowledge and spe-
cial tools. Leave all work on your S-Pedelec to
your Stromer dealer! Work that is improperly car-
ried out endangers your safety on the S-Pedelec!
Brake discs and brake pads are particularly
subject to wear. Please allow a specialist retailer
to check these key parts on a regular basis and
replace any worn parts if necessary.
Source: Shimano® techdocs
Do not touch the brake disk while it is rotat-
ing or directly after braking. This could result in
injury or burns.
Safety instructions for hydraulic disk
brakes
Avoid permanently braking for longer peri-
ods, as can be the case during long, steep de-
scents. Otherwise this can allow vapor bubbles to
form and cause a complete failure in the braking
system. This could result in serious falls and in-
jury.
The brake lever must not be applied if the
S-Pedelec is on its side or upside down. Otherwise
air bubbles can enter the hydraulic system which
could cause the brakes to fail. After transport-
ing the bicycle, check if the pressure point of the
brakes seems softer than it was before. Slowly ap-
ply the brakes several times. This allows the brak-
ing system to discharge any bubbles.
If the pressure point remains soft, please refrain
from riding. The Stromer dealer must bleed the
brake.
You can avoid this problem by applying the
brake lever before transport and then fixing it in
this position using a strap. This prevents any air
from entering the hydraulic system.
When you come to clean the braking system,
please first read the instructions provided by the
component manufacturer.