[mort]

I have a 300 fourtrax 2 WD not sure what year. I only have spark after releasing the starter button. no neutral lite,oil lite only stays on for a few seconds,battery fully charged. Any ideas?

 

[shadetree]

sparks when you release start button ?..BAD C.D.I. !.

 

[shadetree]

find the vin number, its stamped on the front of the frame somewhere, read left to right, count the 10th digit, let us know, or google it ?, that will tells us what year trx300 you have .

 

[retro]

Replace with an OEM Honda CDI (or genuine Ricks purchased directly from Ricks website) only... if you put a china knockoff on it you might fry stuff. Expect no mercy.

 

[retro]

Reminder steve james, the TRX300 bikes all have DC-CDI ignition systems. No exciter coil on them... and the stator is used for charging system purposes only.

 

[shadetree]

I have a 300 fourtrax 2 WD not sure what year. I only have spark after releasing the starter button. no neutral lite,oil lite only stays on for a few seconds,battery fully charged. Any ideas?

A single spark when the starter button is pressed is a false trigger from the CDI which occurs as the system activates and deactivates. This may not be the fault of a bad cdi. You’ll need to test: Stator (3 phases) & a/c exciter coil, pulsar coil, 12vdc and ground at the CDI connector.

Neutral light shouldn’t be an issue as if the circuit was faulty it would not allow the starting circuit to operate.

if he does not show a neutral light on the dash ?, he will never get it to fire the park plug !. not saying the bulb can't be bad ?, but its best for the green light to be lit. and yes..it means the c.d.i. is bad..been there..done that..thousands of times !!!.

 

[shadetree]

A single spark when the starter button is pressed is a false trigger from the CDI which occurs as the system activates and deactivates. This may not be the fault of a bad cdi. You’ll need to test: Stator (3 phases) & a/c exciter coil, pulsar coil, 12vdc and ground at the CDI connector.

Neutral light shouldn’t be an issue as if the circuit was faulty it would not allow the starting circuit to operate.

if he does not show a neutral light on the dash ?, he will never get it to fire the park plug !. not saying the bulb can't be bad ?, but its best for the green light to be lit. and yes..it means the c.d.i. is bad..been there..done that..thousands of times !!!.

You’re correct, the ground for the cdi is interrupted. Ground the cdi through the neutral switch or to the frame and spark is most likely to return.

and thats a hack way to fix the problem, bypassing the neutral switch.

 

[GirlsRideToo]

A single spark when the starter button is pressed is a false trigger from the CDI which occurs as the system activates and deactivates. This may not be the fault of a bad cdi. You’ll need to test: Stator (3 phases) & a/c exciter coil, pulsar coil, 12vdc and ground at the CDI connector.

Neutral light shouldn’t be an issue as if the circuit was faulty it would not allow the starting circuit to operate.

if he does not show a neutral light on the dash ?, he will never get it to fire the park plug !. not saying the bulb can't be bad ?, but its best for the green light to be lit. and yes..it means the c.d.i. is bad..been there..done that..thousands of times !!!.

You’re correct, the ground for the cdi is interrupted. Ground the cdi through the neutral switch or to the frame and spark is most likely to return.

If I were to do this won't the bike now start in gear??? If so, isn't this a safety issue????

 

[shadetree]

if he does not show a neutral light on the dash ?, he will never get it to fire the park plug !. not saying the bulb can't be bad ?, but its best for the green light to be lit. and yes..it means the c.d.i. is bad..been there..done that..thousands of times !!!.

You’re correct, the ground for the cdi is interrupted. Ground the cdi through the neutral switch or to the frame and spark is most likely to return.

If I were to do this won't the bike now start in gear??? If so, isn't this a safety issue????

correct ^^^^^^ !!, could not have said it any better..well..i could have <evil grin>...lol.

 

[GirlsRideToo]

You’re correct, the ground for the cdi is interrupted. Ground the cdi through the neutral switch or to the frame and spark is most likely to return.

If I were to do this won't the bike now start in gear??? If so, isn't this a safety issue????

Your right, don’t test anything and just buy a new OEM cdi. That’ll fix everything. I’ve read it here. Not my money.

I asked a simple question. I don't understand your rude response. Thanks so much.

 

[shadetree]

Your right, don’t test anything and just buy a new OEM cdi. That’ll fix everything. I’ve read it here. Not my money.

I asked a simple question. I don't understand your rude response. Thanks so much.

My apologies. My rude response is directly tied to poor treatment from moderators.


To answer your question: yes. Permanently grounding a switch/ cdi ground, will allow the atv to start in any gear. Not safe unless such effect is warranted.

‘88
I said ground the switch/ cdi to see if it starts before replacing the cdi is; the CDI requires a ground connection to work. When in gear, the neutral switch opens (no longer grounded) preventing the engine from starter.

‘89 and after
The above is the same is true except Honda switched the interrupter circuit to the reverse switch. (These models will kick-start without being in neutral, except reverse, as the neutral switch only affects electric start solenoid circuit)



Simple test: place the ATV in neutral remove CDI and turn the ignition key on. With a digital multi-meter, one should see 12vdc across the 2 wires on the small connector (blue/yellow) & (green).

If 12vdc is read across the two terminals, check pulsar coil, stator, ignition coil and CDI.

If the top wire (blue/yellow) has voltage when tested against ground, no issues. No power? check replace fuse or associated wiring.

Check the bottom (green) wire to see if it has continuity to ground. If it does, you’re good. No ground (aka: open circuit)? then check neutral/ reverse switches for continuity based on atv year.

Quick test is to ground this wire (green) (cdi 2 pin) with a long push pin to a jump wire. If the atv starts by jumping the green wire to ground, fix bad switch(es) or wires based on above testing methods.

Does this help?:grin

hey, you get what you earn around here, act like an '' know it all '' and give wrong and incorrect info to members ?, its our job to set you right. if you think us mod's ( me )..are treating you bad ?, your more than welcome to file a compliant with the site owners ?, but i'm telling you right now, you will be wasting your time !..lol. if you don't like the way we run the site here ?, there's the door ---------------->.