case could lead to a crack in the frame and / or a crash when riding
the bike.
To perform a check of compatibility, release all the air from the
shock to compress it all the way and check for any points of contact
between the frame and the shock. If there are any levers on the
shock, please also check them in every position for points of con-
tact. If there is no contact between shock and frame, it can be used
without any doubt.
Compatible shocks
The Yuma model is only approved to be used with air shocks. Many
of the recent air shocks should be compatible with the frame of the
Yuma, nevertheless you have to perform a check of compatibility
before installing it into the bike. Shocks using a steel spring must
not be used with the Yuma as they are not compatible to be used
with the bike. Furthermore, the use of a steel shock could cause
collisions of the shock and the frame.
Shock maintenance
Permanent excellent performance of the shock can only be guaran-
teed if it is serviced periodically. To ensure that you should keep a
few things in mind:
Clean the running surface of the shock after every ride, especially
in extremely dusty or muddy conditions. Lubricate the seal at the
piston rod according to the manufacturer’s instructions.
Depending on the conditions but not less than every year, Propain
recommends doing a shock service at the manufacturer.
Not less than twice per year you should do an air can service. This
can be done at either a bike dealer in your region or at the manu-
facturer of the shock.
If you are uncertain in any of the points mentioned above, please
do not hesitate contacting Propain or your local bike dealer.
Shock setup
Your shock needs to be set up correctly to ensure your bike per-
forms well. Wrongly set up shocks can cause damages to the frame
or its spare parts. Furthermore, it can cause crashes leading to se-
vere injuries or death.
Your air pressure is set up correctly if it compresses ap-
proximately 30% when you sit on the bike (SAG).
Ask a friend for help to find the right air pressure. He can either
measure the remaining visible length of the piston rod or read the
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