Cold Weather Or Extended Storage Draining Instructions - Mercury SKI Instruction Manual

Gasoline engines

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User manual (68 pages)

Table of Contents

IMPORTANT: Be sure to disconnect the jumper wire from the ignition system test lead

before attempting to resume normal operations. If the jumper wire is left in place, the

ignition module will operate in the "Base Timing Mode." This means that the addition-

al timing advance features would not be functioning.

6. Remove the jumper wire from the timing lead.

ENGINE IDLE SPEED (EFI MODELS)

Engine should idle at rpm (as specified in Operation, Maintenance and Warranty Manual)

with engine at normal operating temperature. If idle speed is incorrect, proceed as follows:

1. Ensure that throttle cable has been adjusted properly.

2. If idle speed is still not correct, it may be necessary to perform EFI System Diagnostic

Tests on the idle circuit. Refer to the appropriate MerCruiser Service Manual for proce-

dures.

WIDE-OPEN-THROTTLE TEST

IMPORTANT: To run engine at full throttle before the break-in period is complete, fol-

low this procedure.

1. Start engine and run at idle rpm until normal operating temperature is reached.

2. Run boat up on plane.

3. Advance engine rpm (in 200 rpm increments) until engine reaches its maximum rated

rpm.

To test if the correct propeller has been installed, operate boat (with normal load on board)

at WOT and check rpm with an accurate tachometer. Engine rpm should be near top of the

specified range so that under a heavy load engine speed will not fall below specifications.

If engine speed is too high, replace propeller with a higher pitch propeller. Normally, a 150

rpm change exists between propeller pitches.