Rev counter advise please

[Budgie1]

Just started my old 1994 60hp Merc for the first time this year, started on the button 😃and thanks to good winterisation all appears good except!!!! ..... Needle on rev counter moves fractionally on start up then doesn't move, assume something is sticking inside the unit but anyone any suggestions how to resolve, are they easy to strip down and clean?

[Chris Caton]

Originally Posted by Budgie1

Just started my old 1994 60hp Merc for the first time this year, started on the button 😃and thanks to good winterisation all appears good except!!!! ..... Needle on rev counter moves fractionally on start up then doesn't move, assume something is sticking inside the unit but anyone any suggestions how to resolve, are they easy to strip down and clean?

have you tried giving the rev counter a sharp tap whilst the engine is running, sounds like you have had a bit of condensation trapped in the rev counter over the winter I've not had much luck stripping down instruments like these, think they are glued together to keep us out

[Budgie1]

Yep tried gentle tap Chris ..... Have just tried slightly more aggressive approach but still no joy!! :-(

[gotchiguy]

Originally Posted by Budgie1

Yep tried gentle tap Chris ..... Have just tried slightly more aggressive approach but still no joy!! :-(

If it is an analog instrument, there may be a little switch on the back that can be turned. Twiddle it through its various settings (4, 6 & 8) I think, and see if one of them gives you a normal reading. Maybe it just got knocked over winter

[Nos4r2]

Usually a case of changing the unit if they stick.

[Chris Caton]

Originally Posted by Nos4r2

Usually a case of changing the unit if they stick.

i though the same, but always worth a "little" tap first, nowt to loose and better to get frustrated with the old one, not the expensive replacement