i:onn 3369 W-I Circuit Replacing Form 3316 CARTER CARBURETOR CORPORATION, ST. LOUIS. MO.• U. S. A. Service Procedure August. 1939 Reprinted February. 1940

SERVICE PROCEDURE W-I CARBURETER

A fast. simple. Circuit method of servicing Carter W-l Carbureters. Use Carter Tool Kit. BE ACCURATE. .}

1.

Disconnect throttle connector rod at pump ann.

Check for wear at upper end of rod and hole In pump arm.

2.

Remove throttle shaft ann and throttle connector rod.

Check lor wear at lower end of rod and hole in arm.

3.

Remove bowl cover with all parts attached.

4.

Remove nozzle passage plug and nozzles.

Be sure to remove small nozzle gasket from casting.

5.

Remove air horn assembly.

6.

Remove pump jet plug and pump jet.

r Be sure to remove small copper washer from castin·g.

Cupyrll'ht 103D by Cftrtl!r Carll1Jrt'tor Corporation

~

Remove metering rod jet and gasket assembly.

8.

Remove idle adjustment screw and spring.

Check for groove on seating surface.

9.

Remove idle port plug.

10.

Remove check valve passage plug. strainer. intake and dischar,ge check valves.

Remove copper washer Irom casting.

11.

Remove low speed jet.

Remove small copper washer from casting.

12.

Remove throttle valve and throttle shaft and lever assembly.

Check shaft for wear. loose lever and throttle rod hole in lever for wear.

CARTER CARBURETOR CORPORATION, ST. LOUIS. MO., U. S. A.

25.

Install throttle shaft and lever assembly, and throttle valve.

Back out adjusting screw. Small "c" or part number should be toward idle port and lacing manifold side 01 flange. Center throttle valve by tapping lightly belore tightening screws. Always use new screws.

26.

Install idle adjustment screw and spring.

Back out from seated position to specifications.

27.

Install idle port plug.

28.

Install new low speed let.

Be sure to Install new copper washer in casting belore instal1lng let.

29.

A88emble parts for pump circuit.

Replace both spring and leather if either shows wear or mutl1ation. Test check.s by blowing for free operation.

30.

Install pump jet cJDd pump jet plug.

Be sure jet is clear 01 all restriction and seats properly. Place new copper washer in casting belore installing plug.

31.

Install discharge check plug.

32.

Install intake check pluq.

33.

Install check .a1.e passaq. plug and strainer.

Place Dew copper washer in caaling belore Installing plug and strainer.

3(.

Install pump spring and pump plunger assembly.

Use loading tool to avoid damage to plunger leather.

35.

Assemble parts controlling high speed circuit.

Check pump arm and countershalt for wear on shaft and for loose lever. If metering rod shows wear, replace both rod and jet. New no~nles should be used whenever carbureters are serviced.

36.

Install metering rod jet and gasket assembly.

Use new gasket.

CARTER CARBURETOR CORPORATION. ST. LOUIS, MO.• U. S. A.

13.

Remove all parts from bowl cover.

14.

Remove all parts from air hom.

TO REASSEMBLE

15.

Group all parta controlliDg gasoline level

16.

Group all parts controlling idle circuit.

17.

Group all parts controlliDg high speed circuit.

18.

Group all parts conuolliDg pump circuit.

19.

Group all parts controlling choke circuit.

Examine each part in the five groups cmd replace any part that shows wear, or does not meet specifications.

20.

Assemble parts that control gasoline level.

Check float lor dents and wear on lip, cmd float pin lor wear. Check bowl cover lor warpage cmd wear in countershalt hole. II needle shows groove on seating surface. replace both needle cmd seat.

21.

Install needle seat and gasket assembly.

Use new gasket.

22.

Install needie. float and lever assembly and float pin.

Set float level to specifications by bending lip, not float. (See figure 23.)

23.

Method of setting fioat level.

Measure from machined surlace 01 bowl cover. ReIer to specification sheet lor corree! gauge.

24.

Assemble idle circuit parts as shown.

(See note at bottom 01 page.'

Never reinstall a used low speed jet. Be sure to scrape all carbon Irom bore 01 casting.

CARTER CARBURETOR CORPORATION. ST. LOUIS. MO.• U. S. A.

37.

Install bowl cover assembly and gasket.

Use new gasket.

38.

Install pump ann. spring and counterahaft assembly.

Connect pump shaft to pump arm with connector link.

39.

Install metering rod gauge.

Pin in pump arm should seat on shoulder of notch in g aug e. See specification sheet for correct gauge number.

40.

Inatall throttle shaft arm and throttle connector rod.

41.

Throttle connector rod should just fit in hole in pump arm.

II it does not. adjustment can be made by bending connector rod at lower angle. Then remove gauge and connect top end of rod in pump arm.

42.

Install metering rod and disk.

Make certain rod is in jet. Hook metering rod spring to rod.

43.

Install air hom.

Be sure to use new air horn gasket. No. 20-XX (see catalog page.)

-44.

Inatall nozzles and pCUlsage plug.

Put new gasket on nozzle before installing. Slip nozzles should always be installed with flat surface upward. Insert new copper washer in casting before installing plug.

45.

Assemble parts controlling choke circuit.

Check for loose lever on shaft.

46.

Install choker shalt and lever assembly.

47.

Install choke valve.

Use new screws.

Protect your work with a Carter Ceramic Filter.

Alwoys use complete new gasket assortment when

servicing a Carter Carbureter.

NO CARBURETER CAN DELIVER GOOD MILEAGE

OR PERFORMANCE UNLESS COMPRESSION IS

NORMAL AND THE MOTOR IS PROPERLY TUNED.

CARBURErER Trado Mark: R~. U. S. A... & Canada