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1990 4.3L & Alpha drive Mercruiser Service Manual help?

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1990 4.3L & Alpha drive Mercruiser Service Manual help?

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Old 04-21-2019, 09:28 PM
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Default 1990 4.3L & Alpha drive Mercruiser Service Manual help?
Can anyone tell me which p/n and/or manual number is applicable to a 1990 mercruiser 4.3l and Alpha one? I can't seem to locate the correct manual for the year.......

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Old 04-21-2019, 09:52 PM
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Have them all and have all the Service bulletins and any recalls per the serial runs. If you want get me your serial number and a shipping address I could see what that costs
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Old 04-21-2019, 09:55 PM
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I can let you know Saturday. However, I’d be perfectly fine with used manuals.
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Old 04-28-2019, 10:17 PM
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MCM 4.3 LITRE/LX

Engine s/n: OC758101
Drive s/n: OC841877

Does the s/n of the drive give away what gear ratio it is?

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Old 04-29-2019, 10:27 PM
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yes I can run the drive # and will tell me the gear ratio for a OEM stock unchanged drive unit
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