Engine Fuel; Carburetors; Table Of Contents; Preliminary Checks - Chevrolet 10 1971 Series Chassis Service Manual

Carburetors used with Chevrolet Trucks are designed
to meet the particular requirements of engine, trans­
mission and vehicles. Carburetors that look alike are
not always interchangeable.
number and/or specifications.) Service procedures for
the various carburetors are similar, therefore, typical
illustrations and procedures are used except where spe­
cific illustrations or procedures are necessary to clarify
the operation.
This section covers carburetor removal and installa­
tion and external adjustments for all 10-30 Series
General Description ............................................................................... ...6M-1
Service Procedures ............................................................................... ...6M-1

Preliminary Checks

...............................................................................6M-1
External Adjustment (also see below Additional External
Settings and Adjustments)
Rochester Carburetors ................................................................. ...6M-2
Holley Carburetors ........................................................................6M-6
Removal ............................................................................................. ...6M-9
PRELIMINARY CHECKS (ALL

CARBURETORS)

1. Thoroughly warm-up engine. If the engine is cold,
allow to run for at least 15 minutes.
2. Inspect torque of carburetor to intake manifold bolts
and intake manifold to cylinder head bolts to exclude
the possibility of air leaks.
3. Inspect manifold heat control valve (if used) for
freedom of action and correct spring tension.
4. Check and adjust choke as required, using proce­
dures specified in this section.
5. Adjust idle speed and idle mixture as outlined in
Section 6, "Engine Tune-up" and at the end of the
carburetor group in this section under, "Additional
External Settings and Adjustments."

ENGINE FUEL

INTRODUCTION
(Refer to carburetor part
CONTENTS OF THIS SECTION
Carburetors .............................................................................................
Accelerators and Choke Controls
Governors ...................................................................................... ...
Air C le a n e r s .............................................................................................6M-17
Fuel Pumps ...........................................................• . ..............................6M-22
Special Tools ......................................................................................... 6M-24
CARBURETORS
..............................................................6M-2
SERVICE PROCEDURES
SECTION 6 M
Trucks. Also covered in this section are maintenance
procedures for choke coils, throttle linkage, accelerator
and choke controls, air cleaners and fuel filters.
carburetor identification, overhaul procedures, assem­
bly and disassembly of components, and internal carbu­
retor adjustments, refer to Sectien 6M, of the Overhaul
Manual, under the carburetor being serviced. In addi­
tion to carburetor adjustment specifications, also refer
to Specifications at the end of the manual for carburetor
application and type.
.......................................................
INDEX
Test Before Installation
Installation ......................................................................................... 6M-10
Fuel Filter Maintenance
Automatic Choke Coil Assemblies
Choke Coil Replacement
Additional External Settings and Adjustments
Throttle Linkage Adjustment
Fig. 1C— Fast Idle Adjustment (Rochester M V )
Page
6M-1
6M-2
6M-14
................................................................. 6M-10
................................................... ............... 6M-11
................................................6M-11
................................................................. 6M-11
. ..................... 6M-11
.......................................................6M-12
10-30 CHEVROLET TRUCK SERVICE MANUAL
For