Question about Yamaha 2004 Warrior Base

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1987 yamaha yfm 100 champ no spark

I want to test coil ,stator & pick up but do not have access to a manual , I would greatly appreciate test procedure for these parts & a wiring diagram. thank you my product is not the same as listed could not find YFM 100 ON THE LIST

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  • dalinf250 May 11, 2010

    is it not working or why do u want to test these things.. if u have ohm meter u can test them but not sure on the output readings... the coil can be tested by putting th spark plug against th head and turning it over. but dont hold the plug unless u want a buzz

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1 Answer

My 2012 450 Kodiak atv has no spark I wanted to know how to check the stator and pickup coil


google for a pinout on the stator plug or a service manual then get a multimeter and check for resistances acrossed each coil. should be semi low. they're just coils of wire.

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No spark at spark plug could the coil be bad and how do you test it ?


put an insulation screw driver in the wire end that connects to the cap, obviously disconnecting it from the cap. Crank over and move metal part of screw driver next to some metal and you should see a spark coming from the wire to ground if coil is good.

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Atv charging problems


115 ac volts at idle seems very high to me. if all 3 coils are putting out the same voltage I'd say its ok.

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Testing the stator what measurement should I get from the black wire to white?


More than likely, sorry to say - probably not. I'd be really careful too, because if something goes haywire, you're risking your rectifier and cdi going bad. If you can tell me your make and model - if I have the specs I'll send them to you - but basically, when you check the stator - it's a resistance reading that you're looking for. For example: 99-04 Yamaha Bear Tracker - from white to black resistance is .45 - .55 ohms at 68 degrees f/20 degrees c

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How do I fix my front wheel drive system on my 2004 ATV 400 Sportsman Late model? After extensive work and parts replacement my all wheel drive is not working.


Just a suggestion but you should consider soldering all your electrical connections to insure they are weather and vibration proof. Additionally, I added a small 3 amp circuit breaker, but a 1.5 to 2 Amp automotive fuse and fuse holder will do nicely.

Process:

1- Disassemble the 'Instrument/Light' cluster cover.

2- Remove the 'Radiator access' panel.

>>>Perform This Test BEFORE Proceeding and make SURE all power is OFF!<<<

3-On the drivers LEFT side of the radiator access area, locate two (2) connectors, each with SOLID GREY wires and BROWN wires with a WHITE Stripe on top and smaller diameter Solid Grey and Brown wires with a White stripe leading down.
--a) Disconnect both connectors by pulling the top and bottom sections away from each other. (DO NOT pull the WIRES, use the connector body to pull).
--b) Test EACH of the two (2) connectors with the SMALL DIAMETER wires leading down. (see Hub Coil Connectors pix)
--c) Using an OHM meter, measure the resistance across the two pins (one connector at a time) for each connector. Depending on the accuracy and sensitivity of the meter, each connector should read between 25 and 28 OHMS. NOTE: If EITHER of the two (2) Hub Coils reads ZERO (0) or less than 25 or Greater than 28 OHMS STOP!!! The Hub Coil itself OR the wires OR the connectors may be defective or in need of repair!
--d) Using an OHM meter, on EACH of the two connectors, measure the resistance between one pin of each connector and GROUND (any bare metal point on the ATV frame). NOTE: If EITHER of the two (2) connectors resistance to GROUND reads anything GREATER/ABOVE than ZERO ( 0 ) OHMS STOP!!! The Hub Coil itself OR the wires OR the connectors may be defective or in need of repair!

>>>If the test in 'c)' or 'd)' FAIL STOP, DO NOT proceed!! The Hub Coil itself OR the wires OR the connectors may be defective and MUST be repaired before ANYTHING else is done!<<<

4-(For my model) On the right handlebar, check the lamp in the AWD switch to make sure it is not burned out or missing. Replace lamp if necessary. (Not essential to the AWD operation, just nice to have to confirm voltage is being applied to the front wheel Hub Coils)

5-In the 'Radiator Access' area, locate the Red/White stripe wires providing (switched) full time + (battery plus) voltage (accessory power) via a ΒΌ" female connector. "Accessory Leads" - in the wiring diagram.

6-Using a volt meter (or continuity light), CONFIRM that the terminal is OFF (NO voltage) when the ignition switch and the 'Engine STOP/START switch (on the left handlebar) are both OFF, and has + (positive) battery voltage, when the ignition switch and 'Engine STOP/START switch are both ON, with the engine NOT running.

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1 Answer

My honda bid red wont start jus keeps cranking


Does it have spark no spark could be cdi box ignition coil stator pick up .or cold be in carb if not getting gas need more information to help you

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