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99 Kawi zx 900c won't crank or start, I've been told that it's either the stator or rectifier, how can I test these parts to be sure

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The rectifier is the easiest to test by replacing first, but I would not even look that direction, I would start at the starter relay and fuses, test these with a volt meter first, the relay will engage when you press the starter, no voltage no start, voltage but no start then check connections on starter or replace starter motor. rectifier and stator only related to battery charging

Posted on Nov 27, 2013

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The stator and rectifier are parts of the charging circuit, don't control motor operation. An ohm test will check a stator, you need specs to know what it should be. A rectifier changes ac to dc (I think) and has it's own test, which I forget.
Cranking and starting are battery and ignition and fuel things.

Posted on Nov 27, 2013

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Will not hold a charge it has a new battery,stator and rectifier.

Take it back to the dealer! they will check for free. It is one of those. Sometimes you get a new part that is still bad, it happens. Take it to any reputible dealer and like i said, they will check it for free

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This problem is the alternator is not charging. You will need to trouble shoot the stator, rectifier/regulator. You will need a volt/ohm meter. It is best to get you a good manual. But as always check your fuses. The stator will produce AC voltage in about the 27 - 32 volts AC range at idle. Unplug the stator and check for voltage there at this plug when idling. Next plug the rectifier back in and check for voltage at the battery at idle, should be in the 14 volts DC range. If you are getting the proper AC voltage at the two wires on the stator and only battery voltage at the battery, then your rec/reg is not doing its thing. Hope this helps FixYa up.

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Hi, I'm trying to figure out how to bench test a rectifier on an 06 GSXR 600. I know my stator is gone but I need to test the rectifier to see if that's next but I'm not sure of the exact...

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MTD yard Machine lawnmower,17hp Briggs And Stratton engine. Runs for about 15 or 20 minutes and stalls. It will not start again until I recharge the battery over night. Then only runs again for 15 or 20...

yes it could be

check your battery 1st , then check the stator a/c output

• 10 or 16 Amps DC regulated for charging
• Two black leads (C) from stator
• Yellow connector (D) with two pin
• Two yellow leads (E) to regulator-rectifier
• One red lead (B) from regulator-rectifier
to red connector output lead (A)
• 10 and 16 Amp systems use the same
stator, color coding and regulator-rectifier
• Alternator output is determined by the
flywheel alternator magnet size

The stator and regulator-rectifier are the same
for the 10 and 16 Amp systems. The system
output is determined by the flywheel magnet
Test Alternator Output
1. Temporarily disconnect stator wire
harness from the regulator-rectifier.
2. Insert RED test lead (A, Figure 28) into the
V ω receptacle in the meter.
3. Insert BLACK test lead (B) into COM
4. Rotate selector to AC Volts position.
5. Insert RED (A) and BLACK (B) test lead
probes into output terminals (D & E) in
YELLOW connector (C). (Test clip leads
may be attached to either terminal).
6. With the engine running at 3600 rpm, the
output should be no less than:
• 20 volts - 10 Amp System
• 30 volts - 16 Amp System
7. If No or Low output is found, check for
bare wires or other defects. If wiring
defects are not found, replace the stator.
voltage depending on alternator type and magnet size

then check the regulator / rectifier , make sure it is grounded properly

make sure battery earth lead is good

i suspect loss of bat voltage is letting the afterfire solenoid close off the main jet

let me know model and type codes off engine & i will try help further


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1 Answer

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1 Answer

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Stupid Question but are all your wires clean and tight connections? Also make sure your batt ground is good too. R1's can be picky like that.



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