first crank the bike. (with battery charger if need be) then disconect the battery while its running. if the bike goes dead this means that the only thing feeding your spark plugs and coil is the juice from the battery and you have problem with the magneto most likely. if the bike remains running after you disconect the battery you should still check the voltage in the battery leads (the wires you disconected, not the battery) with a volt meter. if the system is "charging" it should give you better than 12 volts. these two things should tell you if you have to look further.
When the battery light is on. That means your charging system isn't working. You should have your system check. It will drain your battery.
If the battery is slowly going down, it's probably the charging system. Batteries are only storage devices, and only store electrical energy that is created elsewhere, in this case, by the charging system. If your charging system is getting weak it might not be able to keep up with the radiator fan.
Auto Zone will check your charging system for FREE. Go to any Auto Zone and have them check your Alternator / and charging system.
Just run a volt meter on the battery with the motor off, should have 12.4 or so. That means that the battery is good. Run up the engine to around 2500 to 3000 rpm, should have around 14 volts. If so, then all is well.
A water pump circulates the coolant on a 1983 Honda Shadow. But if you are having problems with it circulating you might want to check your thermostat first because it might be stuck , before you start digging into the water pump.
Go to autozone and get a free charging system check.
It means that the computer has detected a malfunction in the charging system. It could be over or under charging. You will need to have the system checked.
Check under the seat.
I just purchased a 2002 Honda Shadow Sabre. It did not come with a owners manual and this is my first bike and of coarse I want to take care of it.
There are several different avenues a person can take if they wish to buy a Honda Shadow Spirit 750. The best options are to check with the local classifieds and through approved Honda dealers in the area.
The Alternator.
The Alternator.