MerCruiser, 4-Cylinder, Engine, 1985, 1986, 1987, 1988, 1989, maintenance, pdf, repair
How to fix your used 4-Cylinder Engine with the help of this professional electronic pdf download version of the detailed and specific MerCruiser service manual / repair guide.
MCM 120 MR - serial numbers 6853914 to OA492055
MCM 120 Alpha I - serial numbers OA492056 to OB531853
MCM 2.5 Liter - serial numbers OC856450 and above
MCM 140 MR - serial numbers 6852270 to OA484072
MCM 140 Alpha I - serial numbers OA484073 to OB450800
MCM 3.0 Liter - serial numbers OC856450 and above
Sea Ray 3.0L - serial numbers OC856450 to B917530
NOTE: MCM 2.5L - Same as MCM 120
NOTE: Sea Ray 3.0L - Same as MCM 140 (later models are rated at 130 HP and have 9.2:1 compression ratio).
Start your 4-Cylinder Engine repair today!
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