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Tach inop


N543TF
(@n543tf)
New Member
Joined: 4 weeks ago
Posts: 2
Topic starter  

 I changed a CHT probe yesterday and ran the engine.  All was well. Today I cowled the plane up and went to fly.  Tach is inop.  Reads zero and does not move.  Both mags work fine.  I have the ignition booster installed so when I check the left mag the tach goes to zero normally (well shows about 10 rpm).  I looked for loose or broken wires and everything seems fine.  I assume the tach sensor is the small three wire unit at the top of the flywheel.  

Everything worked yesterday and all I did was cowl the airplane.  I'm at a loss.

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Jabiru Support
(@jabiru-support)
Member Admin
Joined: 1 year ago
Posts: 120
 

Hello,

I am guessing that you are taking you tacho signal from the coils somehow?  Can you attach a picture of this tach sender unit, as I don't think I am understanding properly?


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N543TF
(@n543tf)
New Member
Joined: 4 weeks ago
Posts: 2
Topic starter  

@jabiru-support Away from the airplane.  Will respond with photos asap.

 

Bill


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