Hi Folks,
I have done extensive research/reading on this site and others regarding my latest issue, which is my SYSTEM CHECK TACHOMETER #177107 intermittently working, dropping out to 0rpms, working fine, jumping all over the place, etc. I will say it works normally probably 85% of the time, which may not matter.
From everything I have read so far it seems more likely that I have a malfunctioning reg/rect, or that is slowly going bad, but I'm not sure based on the following:
What I have done so far is the "easier" stuff - inspect the tach, the 8 pin wiring connector and pins on the back of it, spun the selector on the rear of the tach. All of that "looks" fine. The tach sytem check lights and the horn all work sequentially upon startup as well. Motor itself is running perfectly as well.
I also have measured the two (new last season) batteries' voltages. At rest (no power), they both register at about 12.5V. I've then started the motor on each battery, and they both measure at about 14.4V with the motor running at about 1100rpms give or take. I believe this tells me the batteries are charging correctly.
I did have a new reg/rect installed in 2007 when I acquired the motor originally. It turned out it was not the reg/rect that was the problem, but that's another story.
So to my question - if the batteries are charging normally, does that point more towards a bad tachometer?
I have not tested any other wiring at the motor. I have read Joe Reeve's test procedure but not done it. I was hoping someone could comment as to whether the reg/rect could in fact be fine, and I have a bad tach...or whether the tach operates independently from the reg/rect when it comes to the charging system...as in, could the "tach powering" part of the reg/rect unit be malfunctioning separately from the charging part of the unit?
I really appreciate replies - as usual, couldn't happen at a better time of year. My main concern is that I don't want to be running around with a faulty reg/rect unit that could overheat and start a fire or something. I'm not usually the type to throw parts at a problem, but if a new tach and/or reg/rect unit fixes the problem, I'm in.
Many thanks!
Dave
I have done extensive research/reading on this site and others regarding my latest issue, which is my SYSTEM CHECK TACHOMETER #177107 intermittently working, dropping out to 0rpms, working fine, jumping all over the place, etc. I will say it works normally probably 85% of the time, which may not matter.
From everything I have read so far it seems more likely that I have a malfunctioning reg/rect, or that is slowly going bad, but I'm not sure based on the following:
What I have done so far is the "easier" stuff - inspect the tach, the 8 pin wiring connector and pins on the back of it, spun the selector on the rear of the tach. All of that "looks" fine. The tach sytem check lights and the horn all work sequentially upon startup as well. Motor itself is running perfectly as well.
I also have measured the two (new last season) batteries' voltages. At rest (no power), they both register at about 12.5V. I've then started the motor on each battery, and they both measure at about 14.4V with the motor running at about 1100rpms give or take. I believe this tells me the batteries are charging correctly.
I did have a new reg/rect installed in 2007 when I acquired the motor originally. It turned out it was not the reg/rect that was the problem, but that's another story.
So to my question - if the batteries are charging normally, does that point more towards a bad tachometer?
I have not tested any other wiring at the motor. I have read Joe Reeve's test procedure but not done it. I was hoping someone could comment as to whether the reg/rect could in fact be fine, and I have a bad tach...or whether the tach operates independently from the reg/rect when it comes to the charging system...as in, could the "tach powering" part of the reg/rect unit be malfunctioning separately from the charging part of the unit?
I really appreciate replies - as usual, couldn't happen at a better time of year. My main concern is that I don't want to be running around with a faulty reg/rect unit that could overheat and start a fire or something. I'm not usually the type to throw parts at a problem, but if a new tach and/or reg/rect unit fixes the problem, I'm in.
Many thanks!
Dave
