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Pump Adjustment: Remove air horn assembly, back out throttle
adjustment screw, and place pump operating link in center hole of throttle
shaft arm. Adjustment can be made by bending horizontal portion of pump connector
link, so that top of pump plunger shaft contacts part of gauge T109-117S
marked 38/64" (15.08 mm).
Pump stroke adjustable for high or low temperature. Set to longest stroke
for cold weather, shorter stroke for hot weather driving.
Maximum economy and performance are secured only when breaker points, spark
plugs, valves and motor timing are set to manufacturer's specifications.
After motor is properlytuned, the following should also be done to insure
satisfactory performance and economy:
(a) Float level must be set as above.
(b) Step-up rod in step-up jet must seat and move freely. When reassembling,
jet must be screwed in tight against seat.
(c) Step-up piston in body casting should not bind and must be free of dirt.
(d) Main metering jet can be replaced with leaner than
standard metering jets, for altitude or high test fuel. Caution: Do not attempt
to gauge metering jets with drills.
These jets have been flow-tested, to insure correct fuel flow.
Studebaker Trucks Late 1938 39 40 41 42 — Nos. 427S, 428S, 429S
WHEN SERVICING, USE GASKET ASSORTMENT No. 621—LIST PRICE $0.65; REPAIR
PKG. No. I317A FOR 4295, PRICE $6.25;
No. 1322 FOR 428S, PRICE $4.95
All Prices Subject to Prevailing Surcharge
INDICATE CONTENTS OF REPAIR PACKAGES
I Part No. PART NAME List Price
86-II Lock washer (9/32" I. D.) (Use with 101-54) 02
86-15 Flange stud lock washer .02
86-17 Lock washer (15/64" I. D.) (Use with 101-55) .02
100-15 Headless screw ------ ------------------------------------ .07
101-6 Choker bracket attaching screw (Sup. by
I01-142S) .07
101-10 Wire clamp screw .07
101-12 Throttle lever clamp screw .07
101-34 Clamp screw .07
101-54 Flange attaching screw (Sup. by 101-145S)_. .07
101-55 Air horn attaching screw (Sup. by 101-146S) . .07
101-58 Throttle adjusting screw ___ .07
I01-142S Choker bracket attaching screw & washer ass'y .07
10I-1455 Flange attaching screw and washer ass'y (2) .07
I01-1465 Air horn attaching screw and washer ass'y .( 4) .07
I05A-10 Choker tube clamp nut .__.. .07
105A-I3 Flange stud nut .07
116-13 Pump cylinder ball .04
116-18 Pump check ball .07
117-45 Pump connector link .15
117-60 Pump operating link .20
117-61 Pump connector link (Sup. by 117-45) .15
121-37 Body flange gasket (2) .07
121-49 Body gasket .15
123-3IS Idle orifice tube and plug assy. (4275-428S) . .45
I23-36S Idle orifice tube and plug assembly (429S).... .45
145-29 Main vent tube .20
149-43S Step-up jet and gasket assembly (429S) 35
149-48S Step-up jet and gasket assembly (427S) .35
149-62S Step-up jet and gasket assembly (428S) .35
150A-13 Pin spring .02
159-58S Main metering jet and gasket assy.—standard 45
159-60S Main metering jet and gasket assy.—I size lean
Standard—for use with heavy duty oil bath
air cleaner .45
I59-64S Main metering jet and gasket assy.—2 sizes lean
I size lean—for use with heavy duty oil bath
air cleaner .45
159-65S Main metering jet and gasket assy.—2 sizes lean
—for use with heavy duty oil bath air cleaner .45 160-465 Step-up piston,
plate and rod assembly-__ .60
183-16 Insulator .50
*Gaskets so marked must be soaked in 90 proof denatured alcohol for 15 minutes,
installed on part and let dry before using. CARTER SERVICE DISTRIBUTORS:
AUTO ELECTRIC SERVICE CO., Ltd., 1009 BAY ST., TORONTO, ONT. BEATTIE AUTO
ELECTRIC, Ltd., 176 FORT ST., WINNIPEG, MAN. ,y
PART NAMES IN BOLD TYPE, LISTED BELOW, Part No. PART NAME List Price
I-2345 I -240S IA-23 IA-30 2-86 3-338S 4-303S 4A-47S 6-230S 7-1055 IIB-17
IIB-40 IIB-41 11B-79 IIB-103 IIB-108 14-2I0S 20-26 20-3 I 20-51 20-52 2I-49S
24-23 25-44S 25-48S 30A-37 39-II 48-67S 48-69S 48-77S 48-79S 61-58 61-72
61-84 61-134 61-144 61-157 61-173 62-87S 63-24 63-37 64-49S 86-10
Body flange assembly (4275-428S) $3.70
Body flange assembly (429S) 3.70
Flange gasket 111/4" for use with governor ..... .10
Flange gasket 11/4" for use without governor.. .10
Throttle valve ................................. ... .30
Throttle shaft and arm assembly .... 90
Throttle lever assembly ___..__..___._ 90
Throttle shaft dog assembly assembly 50
Air horn assembly ... 3 70
Choker valve assembly 75
Pump check plug .15
Rivet plug (Sup. by 11B-79) 04
Rivet plug (Sup. by IIB-79)_ 04
Rivet plug (2) 04
Main vent tube rivet plug 04
Idle hole rivet plug 04
Choker control lever and shaft assembly 60
*Main metering jet gasket 07
*Needle seat gasket 07
*Step-up jet gasket ........ .07
Step-up piston gasket 07
Float and lever assembly 1 20
Float lever pin 07
Needle and seat assembly (429S) 1 20
Needle and seat assembly (4275-428S) 1 20
Idle adjustment screw .._.__._._... .45
Valve attaching screw (4) 2 for 07
Pump jet ass'y (427S) (Sup. by 48-79S) 35
Pump jet ass'y (4285-429S) (Sup. by 48-775)__._ .35
Pump jet assembly (4285-429S) 35
Pump jet assembly (427S) 35
Throttle lever adjusting screw spring 07
Choker pull-back spring .15
Idle adjustment screw spring .07
Step-up piston spring .07
Pump spring (conical) 15
Plunger spring .15
Pump check spring .07
Choker tube bracket assembly .75
Float lever pin retainer 07
Retainer ring (pump). .07
Plunger and rod assembly (Shaft No. 49-104) . 1 05
Lock washer (I I/64" I. D.) (Use with 101-6) 02
Copyright 1938
by Carter Carburetor Corporation
All Rights Reserved
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