1985 Mercury Outboard V-300 V-3.4L Shop Service Manual, Page 8Get this manual
Figure 2APort View of Powerhead
Figure 2BStar board View of Powerhead
aFlywheel CoverTiming PointerAir SilencerFuel Enrichener ValveSpark Advance Lever Ignilion Coils (6)Fuel ConnectorShill ShaltCover, Poppet Relief Valve (2) 1- Waler Pump "Tell TaleHose Tilt Ignllion Stop Switch 1- StarterStarter SolenoidUpper Switch 80KLower SwitCh 80KIn-Une Fuse (20 Amp)RectifierVoltage RegulatorFuel Pump (One Each Side)