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First recorded activity by BoatBanter: Jan 2009
Posts: 282
Default Merc tach question


"Jim" wrote in message
...
SteveB wrote:
I started ripping and tearing today on my Lund, replacing plywood,
wiring, and just junk that went nowhere and did nothing. Got a good
start on it.

On the tach, I was surprised to find a vacuum line. The globe on the
tachometer is foggy, so I don't have a clue if this was functioning or
not. I was surprised that a tach would be vacuum operated. A VERY long
line from motor to dial.

A couple of questions: How can I check this? Just fire it up in a
barrel of water, and see if there is suction? Put a vacuum gauge on
there? (I'd have to buy one.) Or just put a 1/8" end plug from my
gardening stuff on a shortened stub on the motor, and fergaddabout RPM's,
which really don't mean much to me on a 40. I can hear more than a tach
can tell me. A new digital tach from Northern Tools is about $40, and
that would just be $40 that I could spend on carpet or towards a bimini,
or towards upholstery material. Gas even.

Guess I should take some before and after pics to show everyone. Just
making a silk purse out of a sow's ear, but it needed some dressing up,
and mods.

Steve

Are you sure you aren't looking at a speedometer?


Well, then, that's that. It would cost an arm and a leg to get a new glass
for this one, and then not be sure if it would work. My GPS does the same
thing, and is pretty accurate.

Steve


 
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