
86
the nut can be unscrewed with fingers.
Remove nut, retainer and washer. Discard
all parts - do not reuse any part.
If you are unable to unscrew the safety
valve, use a second spanner to hold the
retainer and remove the safety valve as
follows:
4.
Place the ring end of one spanner
on the retainer on the underside of the lid and hold it in place
with the thumb of the left hand while
grasping the lid with the same hand (see
Picture 4
). With the right hand, place
the other spanner around the nut on
the top of the lid (see
Picture 5
). Exert
downward pressure on the nut. Remove
and re-apply spanner on the nut at a higher
angle. Repeat downward pressure. Repeat
procedure until the nut can be unscrewed
from the retainer with fingers. Remove nut,
retainer and washer. Discard all parts - do not reuse any part.
TO REPLACE
1.
Clean all surfaces around the lid hole where the safety valve will sit
and wipe dry.
2.
Unscrew the new nut from the retainer (which is fitted with
silicone washer) and keep them to one side.
3.
Push retainer with silicone washer into the safety valve hole
from the underside of the lid and hold in place with the left hand.
Place the nut chamfered
side down, flat side up
around retainer threads
on top surface of lid and
screw nut in a clockwise
direction with your
fingers until tight (see
Picture 1
).
4.
Hold the lid vertically and grip with your left hand. The top
of the lid should be facing you. Hold retainer on underside of lid
firmly in place with one or two fingers of left hand (If required,
cover the retainer with a cloth to protect fingers). With the right
hand, place the spanner around the nut on the top of the lid at
an upward angle and exert downward pressure on the spanner
PICTURE 5
PICTURE 4
PICTURE 1
RETAINER
NUT
Chamfered
(rounded)
side
Flat
side