hour meter

D

Dan McNally

New member
Ok brats help me out, does anyone know if a hour meter records straight time run or is the time recorded varied with rpms? Or better stated does the hour meter show more hours at full throttle then at idle?

Thanks for your input,

Dan
 
On our Honda twin forty's with Honda gauges and hour meters the hour meters run off the ignition key. When the key is on the hour meter is counting time whether the engine is running or not. Found this out when I accidentally left the ignition key on and found I had run up an extra 5 hours on the starboard engine.

Jay
 
Dan McNally":2opaa1kr said:
Ok brats help me out, does anyone know if a hour meter records straight time run or is the time recorded varied with rpms? Or better stated does the hour meter show more hours at full throttle then at idle?

Thanks for your input,

Dan
Click to expand...

Dan, never heard of one that varied with rpms, only those that count time when the key is on...

Charlie
 
If a new Honda hour meter is installed for a Honda engine that already has,say, 200 hours on it, will the meter show zero or 200?

MartyP
 
dotnmarty":22m22llf said:
If a new Honda hour meter is installed for a Honda engine that already has,say, 200 hours on it, will the meter show zero or 200?

MartyP
Click to expand...

When I got my new Yami earlier this year the digital gauge read 0. Now I have an analog gauge that reads something like 370 and an integrated digital gauge that reads 42.

Now I know how long the boat has run since 1994 -- as well as how many hours I have on the new motor. I don't know whether the gauge can be forwarded -- but you could certainly power it for the 200 hours (power just the gauge, not the ignition) to get where you want it to be.

M
 
The Honda digital gauges only record time when the motor is running, not just when the key is turned on.
General Motors vehicles consider other operating parameters when telling you when to change the oil, but that's not the case with outboards.
 
Minnow":24llwnj6 said:
The Honda digital gauges only record time when the motor is running, not just when the key is turned on.
General Motors vehicles consider other operating parameters when telling you when to change the oil, but that's not the case with outboards.
Click to expand...
Well a statement like that after I already posted our Honda hour meters run just off the ignition key sent me out to the boat for another look at the hour meters. An apology is in order because I found all the gauges related to Honda motors to be Honda except wouldn't you know it "the hour meters". Found them to have the name OMRON marked on the front. So with my apologies on giving wrong info on Honda gauges I can say OMRON hour meters on our Honda motors count time from the ignition key being turned on whether motors are running or not.

Jay
 
Papillon":37hh7p0j said:
Tortuga,

If you want to run that hour meter back....find yourself a old time used car dealer....they will know how to do it.
Click to expand...

Or maybe you could just go out and drive around in reverse for a day or two?? :roll:

Charlie
 
Minnow":cctwz5z5 said:
The Honda digital gauges only record time when the motor is running, not just when the key is turned on.
General Motors vehicles consider other operating parameters when telling you when to change the oil, but that's not the case with outboards.
Click to expand...

My digital gauge recorded about 300 hours last winter when I left the key, so not sure this is true.
 
I have 87 hours worth of proof that the Honda BF90 hobbs meter runs when the ignition is left in the ON position and not just when the motor is running.

:? :beer :beer :beer
 
I lost a long post responding to this, but here's the short version:

I think the old motors just had an electric clock that ran when the key was on.

The new EFI models have total control computers on board, just like cars, that record actual hours running (plus all parameters, sensors, error codes, etc.), and can be downloaded to another computer or sensor set.

Mine records hours run at each rpm group range (in 500 rpm increments) on my 2005 Yamaha 90 EFI model. (Tells the Technician whether you've been naughty or nice!)

Fun to read the printouts!

Joe. :teeth :thup
 
Interesting information. It would seem that there could be any number of ways that time is recorded depending on what type of unit you have. I would think that the best way to measure use would be to have a variable speed setup, it would seem that high rpms and low idle rpms need to be accounted for.
Thanks for help.

Dan.
 
If you have the analog type hour meter (I have a 2005 25) you can reset the hour meter to zero by jumping across two of the four contacts on the back of the meter. The problem is I can't remember which two. Les would know. I once left the key on and ran the meters up. I reset and then ran them back to where they where supposed to be.
 
I would like an hour meter for my BF15, since with its sporadic use, I have no idea how many hours it actually has on it (not many, but I would like to track for service). I don't have a controls for it at the helm. How would you hook an hour meter into this puppy?
 
Pat, all you gotta do is find a positive wire (usually red) that is "hot" when the engine is running or turned on. I'll see if I can find a wiring diagram for you for a BF 15 but here's the instructions from one mfr

You could mount the meter on the dash and run a positive wire back to the stern or mount it at the stern somewhere and keep the wire short. The ground can go to any boat ground in front or to a negative battery terminal at the back. Hardest part would be to find a red wire that is hot only when the engine is running.

on edit: Pat, pretty sure you have electric start. Google BF15 Honda Owners Manual and if you input your serial number, you can look at the wiring diagram in it, or just look at the paper copy you have. You probably have an ignition switch somewhere (may have three positions, off, on and start) that has the battery lead running to it. There will be three leads on the back, one that has 12V all the time, coming from the battery, one that is hot only when you use the start position (this closes a relay (solenoid) that connects the starting battery lead to the starter motor on the outboard) and one that is hot only when the switch is in the "on" position. This is the one you want.

Charlie
 
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