LETS STOP GUESSING ABOUT ENGINE RPM & FUEL CONSUMPTION!

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SPB #351

1. Quickly adaptable to all OMC outboard engines with the non-pressurized fuel system. (Hook-up time approximately 5 min.).
2. Tachometer reads engine RPM accurately to assist in making correct propeller selection for optimum performance. (Tachometer adaptable to all two-cycle engines battery or magneto ignition).
3. Flowmeter accurately senses rate of fuel flow at all engine speeds. (Show your customers how to operate their engine for peak economy - Savings of 20 to 40% by running in fuel saver range).
4. Flowmeter will show positive evaluation or verification of occasional complaints of excessive fuel consumption. (See fuel consumption chart and reasons for slight variances below).

ALL FUEL CONSUMPTION TESTS SHOULD ONLY BE MADE AFTER THE ENGINE HAS REACHED NORMAL OPERATING TEMPERATURE. DO NOT ATTEMPT TO TEST RATE OF FUEL CONSUMPTION ON AN ENGINE THAT IS IN NEED OF A TUNE-UP.

Fuel consumption figures below are based on the RPM at which these engines develop their certified rated horsepower.

NOTE: Fuel consumption can vary slightly due to a number of reasons, several of which are as follows:

1. Incorrect high speed jet or jets being used (Refer to Johnson Service Bulletin SB-982).
2. Slow speed jet or jets adjusted too rich (all engines).
3. High speed jet or jets adjusted too rich (engines with adjustable high speed jets).
4. Improperly adjusted or partially closed choke (manual or automatic).
5. Leaky float valve needle and seat.
6. Atmospheric conditions (high barometer) etc.