Tach issue

[FZ1Logan]

Installed a tail tidy and when checking new brake lights and turn signals I forgot to turn the bike off and killed the battery. When I was trying to start the bike this happened. Have a new fresh battery no loose connections everything works, bike will even run and drive. I just don’t want it do anything to mess it up with the tach acting all funny on me

 

[Isleoman]

Tach not working / Not running

Last night I dropped my oil pan and cleaned out the pick up tube and put a new oil pan gasket on. When I reassembled the bike it woudln't crank. So I checked my fuses and I was getting power on both sides of the ignition circut and everything else was working. The bike would just spin over no...

998cc.org

There's no final conclusions in the link but there are a lot of suggested things to check. Does needle move or bounce at all when the bike is running? There's a metal stop at 0 RPM, so it must have spun all the way around clockwise. Were you jumping it off another vehicle before you got the new battery?

It's not that hard to take the meter off and remove the covers to expose the needle but who know what turning it back by hand would do. There are various codes that are displayed thru the Tach mostly related to the TPS. I wouldn't think riding the way it is would harm the bike. Worst case is a used one off the Bay.

 

[FZ1Logan]

http://[URL]https://998cc.org/threads/tach-not-working-not-running.17291/

[/URL]

There's no final conclusions in the link but there are a lot of suggested things to check. Does needle move or bounce at all when the bike is running? There's a metal stop at 0 RPM, so it must have spun all the way around clockwise. Were you jumping it off another vehicle before you got the new battery?

It's not that hard to take the meter off and remove the covers to expose the needle but who know what turning it back by hand would do. There are various codes that are displayed thru the Tach mostly related to the TPS. I wouldn't think riding the way it is would harm the bike. Worst case is a used one off the Bay.

I did jump it off another vehicle, and I’m trying to remember correctly but I am almost positive it had done this before that had happened. I haven’t turned it back by hand in hopes of pulling off a magic trick and getting to go back in it’s own. When I start it up it hits the metal stop at 0

 

[Isleoman]

It may be that it needs to be lifted over the 0 RPM stop since it wants to spin clockwise. Or the needle needs to come off completely and be placed back on the rotating pin at 0 rpm with the bike not running.

Turning it backward seems like going up stream. The needle could be slipping or has slipped on the pin that rotates.

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[Klurejr]

Super late to this - but my tach started being weird a few years ago. It works fine at idle and when I rev up it holds steady on the correct RPM. But as soon as I let off the gas to slow down the needle drops to the bottom like a rock. Pops right back up as I rev again...

Annoying - but it works enough.

 

[FZ1Logan]

Super late to this - but my tach started being weird a few years ago. It works fine at idle and when I rev up it holds steady on the correct RPM. But as soon as I let off the gas to slow down the needle drops to the bottom like a rock. Pops right back up as I rev again...

Annoying - but it works enough.

Yeah my issue was very odd. It skipped past the stop at 13000 rpm’s and I just lifted it over the stop at 0 and it was fine after.