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TOPIC: 1989 Force 85 Tach

1989 Force 85 Tach 30 Aug 2016 15:48 #1

  • Derb25
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Just picked up a 20 pole tach for my boat any one know how to hook this up??

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1989 Bayliner Capri 1700
1989 Force 85

1989 Force 85 Tach 01 Sep 2016 18:39 #2

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Bump

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1989 Bayliner Capri 1700
1989 Force 85

1989 Force 85 Tach 01 Sep 2016 18:50 #3

  • Dutchpirate
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If I remember correctly it's the purple wire coming from the motor, or at least that's what I have on mine, I'll check when I get home. There should be an adjustment on the back of the gauge that sets the readout to the number of impulses the engine sends. It might be a pull-out and turn adjustment, don't crank on it or you could break it. You will need to run power as well, but that can chain off another gauge.

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There is NOTHING--absolute nothing--half so much worth doing as simply messing about in boats

1989 Cobra 1810 "A-Lure"
1998 Force 120hp

Medicine Hat, AB
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1989 Force 85 Tach 01 Sep 2016 20:37 #4

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Might be beyond my knowledge. I have an accessory harness that comes off my control box that ties into my dash gauges. What type of control box do you have?

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There is NOTHING--absolute nothing--half so much worth doing as simply messing about in boats

1989 Cobra 1810 "A-Lure"
1998 Force 120hp

Medicine Hat, AB

1989 Force 85 Tach 17 Jul 2017 14:16 #5

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Finally got the tach installed and operating almost a year later but it is in now. I have taken it out twice now with the tach and at WOT it is only getting 4100 RPM's? Any advice on prop change size?

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1989 Bayliner Capri 1700
1989 Force 85
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