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Tachometer Jumping with 1978 GS 400

  • Thread starter Thread starter Anonymous
  • Start date Start date
A

Anonymous

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Hey- I'm Just writing to ask about some tachometer issues with my 78 GS400.

Whenever I rev the engine to about 6 thousand rpms and hold it there for any length of time, It jumps from about 5-7 th. RPMS. It seems like the tachometer cannot keep up with the engine.

Is there any kind of lube I can use?
Is this a normail problem?
Any Suggestions?

ps. I also have a similar problem with the Speedometer, but it's about 5 mph jump.
 
Yep, from my experience the cable needs lubing. It will get worse if you dont lube it, it will jump around at lower rpms also and will eventually break. Same can happen with speedo cables.
 
thats weird, because I was gonna ask the EXACT same question about my '78 GS400 tach... :D
 
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