FUEL SYSTEM/CARBURETION
4.13
FLOAT HEIGHT
ADJUSTMENT
1.
Place the carburetor on a level surface as shown
at right to remove weight from float arm. In this
position, the float tongue will rest lightly on the
inlet needle valve pin without compressing the
spring.
Float Height BST 34:
13--14 mm (.51--.55 inches)
2.
Measure the height from the float bowl mating
surface to the top of step in float as shown. Both
sides of float should be parallel to each other. The
measurement should be made at the mid-point on
the top of the float using Float Adjustment Tool
(PN 2872314) or a vernier caliper.
When
measuring the height be sure the inlet needle
valve spring is not compressed.
3.
If adjustment is necessary, bend the tongue
slightly. Be sure float measurement is even on left
and right side.
Bend to adjust
float
Float arms even
NEEDLE AND SEAT
LEAKAGE TEST
1.
Install the float bowl. Invert the carburetor and
install a Mity-Vac
t
(PN 2870975) to the fuel inlet
fitting. Apply 5 PSI pressure to inlet fitting. The
needle and seat should hold pressure indefinitely.
If not, inspect needle and seat and seat O-ring.
Mity Vac
t
(PN 2870975)
PartShark.com
877-999-5686
Summary of Contents for 2009 Trail Blazer 330
Page 94: ...ENGINE 3 48 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 110: ...FUEL SYSTEM CARBURETION 4 16 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 124: ...BODY STEERING SUSPENSION 5 14 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 196: ...ELECTRICAL 10 4 REVERSE LIMIT SYSTEM P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 226: ...ELECTRICAL 10 34 NOTES P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 227: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BOSS P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 228: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BOSS P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 229: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BLAZER P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...
Page 230: ...ELECTRICAL WIRING DIAGRAM 2009 TRAIL BLAZER P a r t S h a r k c o m 8 7 7 9 9 9 5 6 8 6 ...