I put my fist through the glass tach cover for my 4-108 a couple of days ago. It was sticky, and banging on the face always got it to get closer to working. Banged a little too hard
I could live without a tach; after 10 years I think I know where 2100 RPM is (it's got a Velvet-Drive, so 1:1). Then again, it's kinda nice to have.
All the other instruments "work", where "work" means they seem to indicate nominal operating temp / oil pressure / fuel level / charge amps, but they fog up quite nicely in colder weather and I have no alarms on anything. I have overheated twice because of this (fortunately, not for very long).
I'm considering replacing the whole panel with some Cruzpro digital gauges. Yes, I know what you're thinking, DIGITAL -- UGH! But hey, if my GPS, autopilot, depth, speed and all other gauges are digital and still work after 10 years, so should these.
Wondering if anyone has any experience with this Kiwi company. A new set of gauges would cost me about $500, plus building a new panel. But I could use them on another motor if I repower, or if I rebuild my 4-108. And *every* gauge has an alarm, which is nice. There are other little things that I could do with the new gauges, like making the ammeter use a house shunt and measure both charging current and battery draw. But mostly it's fixing the tach and getting alarms.
Anybody ever try these? I know the company's been around for a good 6-10 years because I've been pondering replacements for that long, but I hadn't broken anything yet...