Johnson Service Bulletin SB-916 (1962) - Venturi Locating Gauge 379242

Issued August 25, 1962, this Johnson factory bulletin explains the use of special service tool 379242 to position the secondary (high-speed) venturi on all 75 HP V-75 carburetors. Includes factory photographs and the original special-tool order form.

Johnson Motors blue Service Bulletin letterhead
August 25, 1962Bulletin No. SB-916
Special Tools
SUBJECT: #379242 LOCATING GAGE - SECONDARY VENTURI: All V-75 ENGINES.
Johnson special tool 379242 venturi locating gageFactory photograph of locating gage being used on V-75 carburetor

Illustrated here is the tool, and its use, required to properly locate the secondary (high speed) venturi of all 75 h.p. carburetors.

Should it be necessary to remove the secondary venturi for any reason, this locating tool is absolutely essential to reinstall the venturi in their correct and original positions in the carburetor barrels. The slightest deviation from the proper location will create a disturbance in fuel distribution to each of the four cylinders which results in erratic engine performance.

Price of Locating gage #379242 is $3.25 each, net, F.O.B. Galesburg, Illinois.

NO C.O.D. ORDERS. REFER TO SERVICE BULLETIN #SB-768 AND MAIL ALL ORDERS, WITH PREPAYMENTS, AS INSTRUCTED THEREIN. DO NOT ORDER FROM THE FACTORY.

JOHNSON MOTORS
Robert Compton
Robert Compton
Service Department

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NOTE: Post this bulletin in your V-75 index.

Original Special Tool Order Form

Original 1962 order form for special tool 379242, listed at $3.25

Related special service tools and bulletins

379242 - Gauge, Venturi Locating - tool page and fitment information.

SB-768 - Ordering instructions referenced in the original bulletin.