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1988 trx300 fw starting problems
Hello , new here , first post . Figured id introduce myself and post my problem on the same thread . I have a 1988 fourtrax 300fw , mostly restored that I mainly use for hunting . The starting system has been working flawless for years and then after deer season I forgot to trickle charge the battery and didn't notice it for almost a year when hunting season rolled around . Of course the battery was weak , only clicked a few times and then nothing . I had a car battery on charge and hooked it up and it turned over a few times and then nothing . So now I charged the battery and when I hit the button , nothing and I figured something may have gotten fried hooking it up to a car battery . The starter was brand new , only a year old as well as the battery was new . Tested the voltage of the battery and it reads 12.6 . The switch was really old and falling apart so I bought a new switch assembly and when I opened the box on front of the bike the main plug was unplugged and filthy so I cleaned them and installed the new switch , nothing ( headlights not plugged in cuz the plastic is off ) . Maybe the solenoid is bad , I had a new one as a back up and installed it and checked the fuses with my multi meter and the fuses were fine but still won't even click when I hit the starter button . I got out my solenoid jumper button and when I hit the trigger the bike starts so the starter is good . I checked the little diode that apparently controls the neutral safety switch / light and it was packed full of mud . When I unplugged it the light on the dash went out , cleaned it and checked polarity and no reading but when I reinstalled it the light came back on . not sure how the diode works but I have a new one on the way hoping that is what is keeping it from turning over . When I installed the solenoid I used the multi meter and grounded the black to the battery ground and the red to the yellow/red wire and when I hit the start button it jumps up in voltage and when I test the green wire it does the same , so it seems to be getting voltage sent to solenoid , so why isn't it at least clicking ? . Going back to the front to the starter switch plug , I see both the yellow/red and green wire and a brown wire (?) , what is the brown wire for ? Also when I opened the front box and the plug was unplugged , there was a black wire unplugged also , I plugged everything back in . new switch , solenoid , starter , battery , fuses are good , seems to be getting voltage to the solenoid and it still won't turn over . This has me really confused and scratching my head . Anyone have any ideas on this ? I can start the bike fine with the kickstart and it runs great but who really wants to do that , lol ?
I also just redone my whole front brake system , with new calipers and shoes and controls . I have them adjusted all the way out but have to press really hard to get it to stop with the front breaks , is this normal or do I need new drums ? They were pretty rusted and I soaked them in vinegar and scrubbed them with soapy water and scotchbrite , they cleaned up real well and aren't pitted , maybe just too wore down ? All the bike I have owned in the last 25 years have grabbed a lot more than these are grabbing
Any advice would be appreciated , thanks