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2001 Yamaha XL800 voltage alarm.

walidjomaa

Member
Messages
1
Reaction score
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Boat Make
Yamaha
Year
2001
Boat Model
Jet Ski
Boat Length
17
Hello, Yamaha 2001 XL800. I get a battery alarm beeping and flashing in the gauges, if i charge the battery then it will not come on for a little bit, but then the alarm comes back sound and flashing. The battery has 12v with ski turned off and also just 12v with ski running.
is it the rectifier/regulator, how do i check before i spend the money and buy it. The fact that the voltage is not increasing when the ski is running tells me that the battery is not charging, am i correct? Is there a fuse that could be blown?
 

Julian

Jetboaters Fleet Admiral
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Location
Raleigh, NC 27614
Boat Make
Yamaha
Year
2016
Boat Model
242X E-Series
Boat Length
24
Sounds like the rectifier. Not sure if there is a fuse, but can't hurt to check them all. 12.0 volts is low regardless, 13 is fully charged.
 

Neutron

Jetboaters Captain
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Location
New Bern, NC
Boat Make
Yamaha
Year
2016
Boat Model
AR
Boat Length
24
There should be an a/c voltage check across all the wires from the stator. I would google the spec. Once verified good then most likely the regulator/rectifier is at fault.
 
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