Coolant - APRILIA SR 50 Workshop Manual

PERIODIC MAINTENANCE
2.2.3.

COOLANT

CHECKING AND
COOLANT LEVEL
WARNING
Wait for the engine to cool down before
checking or topping up the coolant level.
•
Stop the engine and wait until it has cooled down.
CAUTION Place the vehicle on a firm and level surface.
•
Remove the front cover, see (REMOVING THE
FRONT COVER).
•
Make sure that the level of the fluid contained in the
expansion reservoir is included between the "MIN" and
"MAX" marks.
MIN = minimum level.
MAX = maximum level.
If not so:
•
Unscrew the filler plug (by turning it counterclockwise
two turns), without removing it.
•
Wait a few seconds in order to release any residual
pressure.
•
Unscrew and remove the plug.
WARNING
Do not put additives or other substances into
the fluid.
•
Top up the expansion reservoir by adding coolant, see
(LUBRICANT CHART), until it almost reaches the
"MAX" level.
•
Do not exceed this level, otherwise the fluid will flow
out while the engine is running.
•
Refit the filler plug.
WARNING
In case of excessive consumption of coolant
and in case the expansion reservoir remains
empty, make sure that there are no leaks in the
circuit.
BLEEDING THE COOLING SYSTEM
CAUTION If the coolant in the expansion reservoir is used
up or if the circuit is emptied, it is necessary to bleed it.
Proceed as follows:
•
Remove the rubber gaiter on the bleed valve located
on the head.
•
Fit a small tube in the bleed valve and leave the other
end in a suitable receptacle.
•
Unscrew the bleed valve.
•
Fill the expansion reservoir with coolant.
•
Bleed the air, tighten the valve and continue adding
fluid until reaching maximum level.
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TOPPING UP THE
SR 50