Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 65Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 65

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SERVICE MANUAL NUMBER 24

Ignition Timing
Thunderbolt Models
1 Connect timing light to number spark plug wire2 Connect shop tachometer to the engineIMPORTANT: Before starting t

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