speedo

Boatist

Rear Admiral
Joined
Apr 22, 2002
Messages
4,552
Re: speedo

Yes water presure pushes air from the pick up to the speedometer. All mechinical except if it has a light for night time.
 

craze1cars

Lieutenant Commander
Joined
Dec 26, 2004
Messages
1,822
Re: speedo

Next time it's outta the water take your compressor and blow air at the water intake hole...you'll see the needle move all over. A speedo is nothing more than a simple air pressure gauge. One of the most common causes of a speedo not working is a crusted up intake hole that can often be easily cleared with a stiff wire and some compressed air. Also common...the air hose comes loose or breaks off from the intake hole at the lower unit.
 
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