1B-10 - MAINTENANCE 90-823225--1 1096
Tune-Up Specifications (Gen + Engines Only)
MODEL
MCM 350 MPI
GEN+
BRAVO AND
BLACKHAWK
MCM
350 MAGNUM
GEN + ALPHA
5.7LX EFI GEN +
BRAVO
(4 BBL TBI)
350 MAGNUM
EFI GEN +
TOURNA-
MENT SKI
350 MAGNUM
MPI GEN +
TOURNA-
MENT SKI
(BLACK
SCORPION)
MIE IN-
BOARD5.7L
EFI GEN +
Propshaft
HP (KW)
1
300 (224) 280 (209) 290 (217) 315 (235) 290 (235)
Displacement 350 CID (5.7L)
Bore/Stroke
In. (mm)
4.00 x 3.48 (101.6 x 88.4)
Compression
Ratio
9.4:1
Compression
Pressure
150 PSI (1034 kPa)
Idle RPM In
Neutral
2
600
Maximum RPM
(at W.O.T.)
4600-5000 4400-4800 4600-5000 4200-4600
Oil Pressure
(at 2000 RPM)
30-60 PSI (207-414 kPa)
Minimum Oil
Pressure (at Idle)
4 PSI (28 kPa)
Mechanical Fuel
Pump Pressure
(If Equipped)
3-7 PSI (21-48 kPa)
Fuel Pressure
(Running)
(E.F.I. Only)
43 PSI
(241 kPa)
30 PSI
(207 kPa)
43 PSI
(296.7 kPa)
30 PSI
(207 kPa)
Electrical System 12 V Negative (–) Ground
Minimum Battery
Requirements
550 cca/700 mca/120 Ah
Firing Order 1-8-4-3-6-5-7-2
Spark Plug Type AC - MR43LTS / Champion - RS12YC / NGK - BPR6EFS
Spark Plug Gap .045 In. (1.1 mm)
Timing (at Idle
RPM)
3
8° BTDC
Thermostat 160° F (71° C)
1
Power Rated in Accordance with NMMA (National Marine Manufacturers’ Association) rating procedures.
2
Measured using an accurate service tachometer and Fuel Injection engine at operating temperature.
3
Timing must be set using a special procedure as outlined in the appropriate Service Manual. Timing cannot be properly set using
the conventional method.
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