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Curing a jumpy tach
jralbert
#1 Posted : Wednesday, June 09, 2010 3:22:48 AM(UTC)
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(I copied this over from a different section - good advice)

fishnatic wrote:
any ideas to get tachs to settle down other than buying new ones?

On the back of the tach you will see a switch marked 4 6 8. This is a screw driver adjustment for the number of cylinders the engine has. Exercise this switch ten or fifteen times and see if that cures your problem. Do not use contact cleaner as it can get on the face of the tach and screw it up. There could also be loose or corroded wiring from the coil to the tach. Rick
Joel Albert, Potomac MD
"Charlie B" - 1988 32' FBS
Twin 318's/FWC/16x15 nibral props
docked Deale, MD
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