Question about Yamaha FZ 600 Motorcycles

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Battery not charging on my 1987 fz600. if i put an ohm meter on the plugs coming out of the generator will that tell me anything? is there a voltage regulator (maybe by another name?) or is it built into the generator? bikes quits if the battery is disconnected.

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Put your Ohm meter on DC Voltage and put the negative or black on the negative of the battery and the red on the positive and see what your voltage is with all your lights on. Should be around 13 to 14 volts. If not and is around 11.5 or 12 then either your alternator or regulator is shot.

Posted on Jul 28, 2009

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My Grizzly 07 / 700 will not charge, when I put my battery on the charger it charges for a short time then the gharger goes into default. I had the battery test at 3 different locations and they say it is...


Your Charging Stator seems to be the culprit. The Battery when it is STATIC should be 12.4-12.8 Volts. When running, there is a Draw from any electrical component. The Stator works as the Alternator/Generator on your vehicle and should boost the Voltage Output up to 13.4-14.2. Seeing that it drops, it is telling me that you have either lost Ground or the Stator is defective and needs to be tested for Continuity and OHM's. This will give you something to troubleshoot and rectify your problem.

Mar 01, 2014 | Vehicle Parts & Accessories

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Battery will not hold charge.


Not a lot of information there. How old is the battery? The first thing I'd do is have the battery "load tested". Just because a volt meter tells you that it has 12.3 volts doesn't mean it'll start your bike. The meter is designed not to put a load on the circuit being tested. Your bike starter puts a tremendous load on the battery. Most any automotive parts store will test the battery for free.

Here's how to check the charging system. To do this you need to fully charge the battery and you'll need a good Digital Volt Ohm Meter. Using the meter's function selector switch, set it to DC VOLTS with a range of 20 volts or greater. Connect the red meter lead to the positive battery post and the black meter lead to the negative battery post. Start the
engine and bring it to a high idle. After about a minute or so, your meter should read between 14.5 and 15.0 volts. Any lower than 14 volts, your battery will not be charged.

If you don't have the minimum voltage at the battery in the previous test, you need to check the
alternator to see if it's generating sufficient voltage. You'll have to follow the wires from your voltage regulator going to the lower left front of your engine until you come to a plug. Unplug the plug and look into the engine side of it. You'll see two metal contacts in the rubber plug. This is where you are going to test the voltage from your alternator. Since you'll be testing AC voltage, it makes no difference which meter lead goes into which contact, just one lead into each contact. Set your meter's function selector switch to AC VOLTS with a 50 volt or greater range. Start the engine and bring it to a high idle. Insert one meter lead into each of the metal contacts. Do not let the leads touch each other or the engine case or ground. Your meter should read at least 25 volts.

If you do not have the 25 volts from the alternator, your stator is bad and must be replaced. If you have 25 volts or more but not the 14 volt minimum at the battery, your voltage regulator is probably bad. Make sure you voltage regulator is properly grounded. Check the condition of the wire coming from the regulator going to the battery. This wire is usually larger in diameter than the other two going to the alternator.


Good Luck
Steve

Aug 17, 2011 | Harley Davidson DNA 50 Motorcycles

1 Answer

Battery does not hold charge battery is good


How do you know the battery is good? Have you had a load test performed on the battery? Just because a battery reads 12 volts when using a volt meter doesn't tell you anything. You need to have the battery load tested. If it tests good, charge the battery to full charge. Put it in the bike and connect the negative battery cable. Using a good Digital Volt Ohm Meter that will measure amps up to ten amps. Set the meter up to measure AMPS. and put it in it's highest scale. Put the postive lead of the meter to the postive battery post. Put the negative meter lead to the postive battery cable that is disconnected from the battery. If you have a current drain, lower the scale range until you get a stead readable value. Then, disconnect the voltage regulator from the battery and read the current drain. Since you bike is ECM controlled, it will draw a little current but not over one amp.

Good luck
Steve

Jul 12, 2011 | Harley Davidson FLHR-FLHRI Road king...

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My radio will not play or charge a batterie while plugged in. I put in a new fuse because the original one blew and as soon as i plugged it back in it blew the new one. It will run with a charged batterie....


Hello,,,

my name is Falco, are you ready to take the unit apart ? do you have the necessary screwdriver ? do you have a volt meter ohm meter ? and do you know anything about electronics ?

May 05, 2011 | Dewalt DC011 AM/FM Radio

1 Answer

Not charging


To test the chargeing system on your bike. First, text the battery. Unless it is "brand new" there is always the posibility that your battery is the problem. This is especially true on an Ironhead Sporty due to the vibration. Take it to an automotive parts store and ask them to load test it.

The first thing we want to do is to "polarize" the generator. Using a jumper wire, MOMENTARILY touch the wire from the "A" terminal to the positive terminal of the battery. Just make it spark, that's all.

Now, with the battery FULLY CHARGED, connect a DVOM (digital volt ohm meter) to the battery. Red meter lead to the positive and black meter lead to the negative. Put the meter's function switch in DC VOLTS, 20 VOLTS or greater scale. Start the engine bring it to a high idle. The meter should read 14.5 to 15.0 volts. If not, test the generator.

First, remove all the wires from both the "A" and the "F" terminals. put your meter's function switch to DC VOLTS, 50 VOLTS or greater. Connect the red meter lead to the "A" terminal and the black meter lead to a good ground. Start the engine and bring the revs up to about 2000 rpm. MOMENTARILY, connect a jumper lead form ground to the "F" terminal of the generator. Your volt meter should read 25-30 volts.

If your generator output is good, you need to replace your regulator. If the output of the generator is zero or low, you need to service the generator. Check the brushes to make sure they're not worn and you may need to recondition the communtator surfaces.

Good luck
steve

Sep 19, 2010 | 1979 Harley Davidson XLH 1000 Sportster

1 Answer

1993 Harley Sportster 883 Batt. is tested and good, generator tested and good, regulator is tested and good, no drwa on batt with ignition off, Charging system putting out 13.5 VDC at 2000 rpm. At idle...


You've already spotted the problem. 13.5 volts is not enough to keep the battery charged. It will slowly lose it's charge. You should be charging at 14.5-15.0 volts.

Check your regulator output. Look just behind the base of the rear cylinder and you'll see the wires coming out of the primary that go to the regulator. There's a plug in the line somewhere. Unplug it. You'll be measuring the output of the alternator so you'll be dealing with the wire on the alternator end of the plug. There are two metal contacts in the plug. You'll need a DVOM (digital volt ohm meter) to do this test. Set the meter's function selector switch to AC VOLTS, 50 VOLTS or greater. Start the engine and bring it to a high idle. Insert one meter lead into each metal contact. It make no difference which lead goes where as you're measuring AC voltage. Your meter should read at least 25 volts or higher. If not, your stator is bad.

If you read 25 volts or more, your regulator needs replacing.

Good Luck
steve

BTW: Early 1984 was the last year for a generator on the Sportster. Late 1984 to present, the bikes have alternators on them. Much better than the old generators. Much better.

Sep 13, 2010 | 1993 Harley Davidson XLH Sportster 883

1 Answer

1987 Shadow 700 charging problem


yes there is a couple of different ways to test these components,first you will need a voltmeter and the first test is an ohms (resistance) test unplug the stator and place the meter leads on the stator leads 1and 2 then 1and 3 then 3 and 2 should read between .2 and 2.5 ohms then do an insulation breakdown one lead to stator lead the other to ground should read OL or OFL if any reading stator is junk. Then test out put meter to ac-volts meter leads to stator leads start the bike should read 15-100 vac. Then as far as the reg/rec goes set meter to diode mode and place one meter lead to the power output and the other to the stator input side of the connector do this to all three wires and then rev. the meter leads and do again 0.3-0.8 forward bias OFL in rev. bias then place meter lead to ground wire on reg/rec and do the same test if you get readings in both forward and reverse bias the reg/rec is bad replace

Jun 04, 2010 | 1987 Honda VT 1100 C Shadow

1 Answer

I have a 1988 honey motorhome with a 5.0 cck onan generator there is a single wire with a diode the wire goes under the sheet metal on the engine the other end goes to the positive lead on the solnoid this...


It is a wire to let the charging system know what voltage/amps, is being devoloped. It has a diode to check the voltage one way.
Take a volt meter. Put it on OHMS. You should read only one way, if not replace it.

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1 Answer

My 546i is telling me to pedal fast after I hit Quick Start or manually start a program. It's obviously not working. I just put a new battery in it too.


This problem maybe coming for n the generator it performs 3 function 1. controls electrical load / resistance to pedals 2. Charging system for the battery 3. Monitors unit when in use (stride) or when it is idle.
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1 Answer

Charging failure on a 1987 fz600


The generator will produce ac voltage not dc so the meter needs to read ac voltage. the readings need to be taken between the three wires using two at a time until all combinations have been tried. readings should all be the same. Engine will have to be run at about 5000rpm while readings are obtained. Other possible problem could be the regulator / rectifier unit breaking down when hot.

Aug 08, 2009 | 1986 Yamaha FZ 600

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