Chevrolet Corvette 1953 Operation Manual page 47

assembly toward Advance or Retard as desired and tighten
the clamp bolt securely. By adjusting the spark in this
manner it can be readjusted to the original setting when de-
sired without special ignilion timing equipment. The use of
"Premium" grades of gasoline in your Corvette engine is
recommended.
FUEL PUMP
A vacuum fuel pump (fig. 68) is mounted on the right side
of the engine and is operated
by
an eccentric on the engine
camshaft. It pumps fuel from the 17 gal. fuel tank and
delivers it to the carburetors. The built·in vacuum pump
feature assures continuous operation of windshield wipers
even under swtained pulling at fuU throttle.
F'I. 68-Futl aM Y«uwn
Pump
The fuel pump to engine
attaching bolts and the
glass bowl retaining nut
should be kept properly
tightened. The glass howl
permits visual inspection to
determine the amount of
sediment or water in the
fuel pump. When sediment
or water
is
visible in the
bowl, it should be removed
Cram the pump.and cleaned
as Collows:
1. Loosen the glass bowl retaining nut and remove gl
bowl and screen and clean.
2. Remove gasket and clean aU dirt and water Cram pum
and gasket seat.
3. Ins taU new gasket and the bowl.
4. Tighten bowl retaining nut securely.
5. Start engine and run until fuel pump bowl fiUs wit
gasoline, then check Cor leaks.
FUEL FILTER
Fig. 69-FJUI Fitin'
A fuel filter (fig. 69) ;"
vided as standard equi
ment in the Corvette.
filter should be checked .
fuel system trouble ;"
couDtered and the
filt
element replaced if
nec
sary.
To remove filler e1
ment, loose n glass bow
retaining nUL and ranov
glass bowl, spring, lilt
element, and g3.!.k.ct. Cl
gasket seat and inslall n
gasket before assembling.
CARBURETOR ADJUSTMENTS
NOTE: When making these adjusonents, it
is
nec .... ry
that the two air cleaners and breather are
llr