300ex problem

[ltl666devil]

im having a problen starting my girlfriends 300ex. when the key and switch is on and i hit the start button it does nothing. i just hear the relay clicking. what could this be. please help asap thanks

[dirtrider77]

mine does the same thing

i just hook it to charger and start it right up

i usually charge it overnight once a week

even when the lights are fully bright and i think its good 2 go, it does the same thing u r talking about

u could buy a new battery if u dont want to charge tho

[ltl666devil]

i just put anewbattery in it

[dirtrider77]

hmmm.....i have no idea then....good luck

[ltl666devil]

thanks tho if anyone else knows please help me

[Jason Hall]

Sounds like a bad connection. Check and clean all the connections at the battery, and the ground cable at the frame. Also check the connections at the starter relay.

[pods_BMOC]

worse comes to worse may need a new CDI

[colesdaddy02]

try taping on the starter with a wrench while pushing the start button.sometimes the starter gets stuck.mine gets stuck and i tap it with something and it cranks over.

[f4istunna]

IF none of that works try jumping the selonoid w/ a screw driver. My 400 would just click when the solenoid was bad

[pods_BMOC]

Check the voltage with a meter coming into the starter

this happin to me before its time to buy a new starter... theres this place that sells them cheap an like new or new. i got one for 119 the handa dealer wants around 300... i will post the number to the place after i find it.. but try tapping the starter with a hammer it might be sticking

[John451]

Try taking it out and seeing if it looks ok. you might have gotten water in there and it might be sticking. While its out i would run wires from the starter connections to the battery to see if it would spin. If it doesnt or hesitates I would replace it. But if it works, grease / oil it and put it back in and give it a try.

[bwamos]

Originally posted by ltl666devil
i just put anewbattery in it

I know I'm asking the obvious, but did you charge the new battery?

After putting the acid in the new battery and sealing it, you're still supposed to charge it.

Also, you did get the TRX300EX battery not the TRX300 battery correct. The TRX300 battery is a much weaker battery and it can have a hard time starting the 300ex.

What's the model# and brand of the battery you got?

[John451]

Originally posted by bwamos
I know I'm asking the obvious, but did you charge the new battery?

After putting the acid in the new battery and sealing it, you're still supposed to charge it.

Also, you did get the TRX300EX battery not the TRX300 battery correct. The TRX300 battery is a much weaker battery and it can have a hard time starting the 300ex.

What's the model# and brand of the battery you got?

You have to put acid in the battery??? That sucks I'm not gettin a new battery haha.

[ltl666devil]

i found out the problem its my wirining harness so i needa wiringharness and all the boxs

[bwamos]

Glad you figured it out.

Before you go out and buy a new harness. Pull apart the big connector underneath the tank. There's no dielectric grease sealing that from the factory, it's jsut a plain undealed plastic connector. Those connections get oxidized bad. If you see a black connection you might be able to clean it, or you can just bypass the connector.

If you do get a new harness, be sure to seal that connector w/ some dielectric grease.

[bwamos]

Originally posted by John451
You have to put acid in the battery??? That sucks I'm not gettin a new battery haha.

LOL, yep. The battery comes with the sulfuric acid you need. They are your standard Lead-Acid battery. It's very simple to do. They call it "electrolyte" so it doesn't sound as scary I guess, but it is sulfuric acid.

[John451]

Originally posted by bwamos
LOL, yep. The battery comes with the sulfuric acid you need. They are your standard Lead-Acid battery. It's very simple to do. They call it "electrolyte" so it doesn't sound as scary I guess, but it is sulfuric acid.

haha, nah, I'm not actually scared. I kinda thought that the battery would come pre filled. I was just confused because my battery doesn't have any ports or holes where you can drain the sulfuric acid.