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Old 07-02-2008, 10:58 PM   #1
Ryder29
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Default Yamaha-Not Working

Hello everyone.
I have a problem i was hoping i could get some feedback on. I have a Yamaha XS400 that isn't working. At first, I'd turn the ignition, but the electrics wouldn't work. It was in storage for a while, so I assumed it was a dead battery (it was old anyway). I purchased a brand new battery, filled it with acid, charged it for about an hour, and tried again...nothing. Any ideas what the problem may be?
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Old 07-03-2008, 12:51 AM   #2
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First: Charge the battery at least overnight.

Second: Look for "mice damage" to the wiring.
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Old 07-03-2008, 07:38 AM   #3
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A battery will have more than enough charge to run the bike as soon as it's filled, though it's better to charge it a few hours until it is bubbling nicely. Did you check the fuses? Spray some wd40 in the ignition switch and work it a bit? Is the kill switch off?
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Old 07-03-2008, 10:20 AM   #4
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As another recent poster found, check the battery terminals to make sure they are really tight. Now you need to find out where your electrical problem is. After following Airhawk and Seru's advice, I'd take a multi-meter and measure voltage at the battery, then start following the wiring to the ignition, kill switch and starter button through to the starter looking for problems. Try putting the bike in it's top gear, and see if you can spin the rear wheel with it in the air (it will take some effort), that will tell you don't have a "stuck" motor (cylinder, piston, bearing, etc.).
Electrical problems suck. Can you bump start the bike?
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Old 07-08-2008, 04:01 PM   #5
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Sometimes when a bike sits for eons with the battery hooked up, the hot wire (positive) gets all corroded under the insulaiton, and won't conduct electricity anymore. Take a pocket knife and cut away some insulation about 5 inches from the battery, if a bunch of white stuff falls out, and is packed inside where the wires use to be, there you go, bad hot side wire.
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Old 07-08-2008, 04:18 PM   #6
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Quote:
Originally Posted by mscuddy View Post
Sometimes when a bike sits for eons with the battery hooked up, the hot wire (positive) gets all corroded under the insulaiton, and won't conduct electricity anymore. Take a pocket knife and cut away some insulation about 5 inches from the battery, if a bunch of white stuff falls out, and is packed inside where the wires use to be, there you go, bad hot side wire.
Your forgot to tell him to stand in a puddle of water while holding a hair dryer for safety.
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Old 07-08-2008, 06:58 PM   #7
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And not one of you even hinted at submerging the the bike in warm salt water for a few days. Have we learned nothing here? Buy them books, send them to college, and they still sit around all day smoking dope and listening to the radio.
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Old 07-08-2008, 11:07 PM   #8
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Radio Sucks, dude. And it's too f'n hot here to sit-around smokin' dope all day - I'd much rather sit around drinkin' Beer all day - and I don't even like Beer..............
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Old 07-09-2008, 07:45 AM   #9
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Loose translation:.....I got this bike that's been sitting in the corner of someones garage for the last 20 years to save gas and now it won't start...any ideas?
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Old 07-10-2008, 08:25 PM   #10
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The bike was purchased by and belonged to my older brother, who moved out about a year ago and gave the bike to me. Like I said, it's been in storage for a while, a few years before he moved out in fact. I've charged the battery, and I'm sure it's charged. I'm going to start checking along the cable for any damage or malfunctions, as was suggested, this weekend (I attend school: not much time). I'll update if I find anything out...or don't find anything out. Maybe i can get some pointers on what to do next.

Thanks for the tips guys. I greatly appreciate it!
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