18785 1 Mercury GASKET

Table 1
Map Number     Engine Speed    
00     No selection    
01     1200 RPM    
02     1100 RPM    
03     1000 RPM    
04     1400 RPM    
05     1500 RPM    
06     1800 RPM    Note: The speed timing map can only be changed when the engine is stopped. An "E4" fault diagnostic will be generated on the DDT if the parameter is changed during engine operation. This fault will not cause the engine to shut down. Press the "CLEAR" key on the DDT in order to return to the normal display. Speed Sensitive Timing Maps
Table 2
Map 01 (1200 RPM Rated Speed)    
Engine Speed (RPM)     Degrees Of Timing Retard
(From Initial Value)    
1200 and above     0    
1150     1    
1100     2    
1050     3    
1000     4    
950     5    
900 and below     6    
Table 3
Map 02 (1100 RPM Rated Speed)    
Engine Speed (RPM)     Degrees Of Timing Retard
(From Initial Value)    
1100 and above     0    
1050     1    
1000     2    
950     3    
900     4    
850     5    
800 and below     6    
Table 4
Map 03 (1000 RPM Rated Speed)    
Engine Speed (RPM)     Degrees Of Timing Retard
(From Initial Value)    
1000 and above     0    
950     1    
900     2    
850     3    
800     4    
750     5    
700 and below     6    
Table 5
Map 04 (1400 RPM Rated Speed)    
Engine Speed (RPM)     Degrees Of Timing Retard
(From Initial Value)    
1400 and above     0    
1350     1    
1300     2    
1250     3    
1200     4    
1150     5    
1100 and below     6    
Table 6
Map 05 (1500 RPM Rated Speed)    
Engine Speed (RPM)     Degrees Of Timing Retard
(From Initial Value)    
1500 and above     0    
1450     1    
1400     2    
1350     3    
1300     4    
1250     5    
1200 and below     6    
Table 7
Map 06 (1800 RPM Rated Speed)    
Engine Speed (RPM)     Degrees Of Timing Retard
(From Initial Value)    
1800 and above     0    
1750     1    
1700     2    
1650     3    
1600     4    
1550     5    
1500 and below     6    Desired Timing Parameter
The desired timing parameter allows the customer to electronically program the ignition spark timing of the timing control system. The desired timing is programmed with the DDT. The value can be changed when the engine is running or when the engine is stopped. The value that is entered for the Desired Timing is the ignition timing when the engine is operating at the rated speed. The actual ignition timing at any instance may be less due to the selected speed timing map, the engine speed, or the detonation activities.Note: The minimum programmed value for the desired timing is 20 degrees less than the magneto calibration timing (manual timing mode). The maximum programmed value is six degrees less than the magneto calibration timing.