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Could Use Some Electrical Help...

1720 Views 18 Replies 6 Participants Last post by  retro
So for as long as I've owned my Honda 300 it's given me problems starting. All my mods are in my sig, so you can see what I have...

IF it's left outside overnite and temps are around freezing or very chilly the quad will barely turn over. I need to kick it. Fires up 1st kick.

IF it's left for days or weeks without starting in a heated garage, it's a crap shoot if it will fire up or if I need to kick it.. bur way better than if it was left out overnite. Always first kick it's running.

IF I have to kick it because the battery won't fire it up, & I run the quad for a little bit or hours, it will always fire right up with the battery.

I had installed a new battery over a year ago thinking it was the culprit, however it continued to do the same thing.

I do have the winch wired up to the aux pink wires direct. it's not with key power.

I'm leaning towards the rectifier?? I remember a while back I tried to check the voltage while cranking & was getting something like 7v, but while running it was 13v or 14v if memory serves me correct...

I would love some advice so I can check some things before I just start throwing $$ at it replacing parts!!!!!

Thanks in advance!
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Retro , put you on a good trick using the compression lever with the electric starter , I have had 300's for 10 years now and never knew about that trick till last year , in the woods and the battery was weak and wouldn't turn the bike over , engaged the decompression lever and it fired right up -------- only thing is your bike needs to be in tune and start easy , as you only get one shot at it cause the decompression lever jump off when the engine starts turning

TBC , brought up an interesting thing , I take it as changing the starter reduction gears to a BigRed 250 ( which I would call a ATC250ES ) will change the ratio , makes sense to me , I had a 250ES and don't remember it having a decompression lever and the TRX250A don't have a decompression lever either , maybe those gears are the same as the 250ES

Wheeler , I have a half dozen TRX250A engines and would give you a set of starter gears if that would help you to start easier
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I have had trouble with the ground cable where it hooks to the bolt which holds the starter in , bad connection at that spot , or even take the starter out and sand the area where it touches the crankcase and where the bolts go thru the tabs at the rear of the starter
Wheeler , I went to the shed for you and Shade , I dug out a 86 TRX250A and pulled the stater reduction gears , cleaned them off and found one was a broke off tooth , but to add insult to injury ----in the mean time , I looked up the reduction gears of the 96 300,
86 250A and the 86 ATC250ES and all have the number of teeth listed and they are all the same , 25T x 43/18T and 21T , so there is no gear reduction gain on any of those years and models , maybe a 85

Tennessee Boy , what year and model would he need


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