Yamaha Warning Buzzer - heating or charging?

Fabbit · #1 August 5th, 2001, 08:06 AM

My 1998 C115 Yamaha warning buzzer goes off at high rpm - I've read the posts on this - doublechecked the water pump - no problem there - have thermosats on order

Question - my Chilton (Seloc) manual indicates that Yamaha motors with the V76 charging system have a feature that causes the warning buzzer to sound and the RPM drop back when the charging system detects a loose battery connection - this is the EXACT same thing that is supposed happen when an overheat situation occurs.

Has anyone heard of this - no mention in the owners manual or in the Clymers manual on this engine. I don't even know if the C115 uses this same charging system.

thanks

Mikey39073 · #2 February 4th, 2002, 06:50 AM

Very interesting..I have 1994 Yamaha 115 and have had problem with the alarm coming on and RPM's limiting, and I have replaced impeller / O-ring..and it occasionally still

does it..as indicated, wait a few minutes and it will be fine again for some period. Also, I never lost my tell-tale..so I am very interested in this battery angle as I know my "A" battery is about shot...

LRV · #3 February 5th, 2002, 05:36 AM

Fabbit:

Regarding the warning buzzer set up on the Yamaha V76 motors I have a 1997 225 EFI with the digital gauges and this is how it works:

Overheat Warning-The buzzer sounds

Speed is reduced to 2000 rpm and the indicator light on the gauge blinks.

Oil Level Warning-The same as overheat but the oil indicator on the gauge blinks.

Low Battery Voltage-The volt readout on the gauge shows the actual volts and the display blinks if the volts fall below 12. NO buzzer sounds in this case.

I don't know if the C115 motors have the same exact charging system but I would doubt it.

Hope this helped in some way!

Good Luck

Mikey39073 · #4 March 11th, 2002, 04:49 AM

Have now run two weekends in a row with a brand new battery. There have been no alarms at all. Have run about 3 hours and logged about 45 miles...There just may be something to a bad battery or connection causing the alarm/RPM limiting issue...

Mikey39073 · #5 March 16th, 2002, 03:51 PM

Okay, make sure your battery connections are clean and tight or check your battery. I ran 34 miles today with zero problems!!!!