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By Kaz
Troubleshooting a no spark issue, was running OK, maybe a little rich, turned it off, now no spark. I've checked/ohmed out the main key switch, the start/stop switch, neutral switch, brake switch - all good. It will crank the starter, but no spark with the starter or when I try the pull start. I've checked all fuses and diodes. Swapped battery. New plug. New coil. Swapped in a used CDI - no help. Traced, removed, cleaned, reattached all grounds. Removed things like my winch from the circuits to be sure a bad relay or something was dragging it down. When testing voltages, the orange wire going from the CDI to the ignition coil shows no/very low voltage-shouldn't it have 12V on it? Sometimes I get a very weak, intermittent glow on my spark tester, but not enough to fire the plug. I've checked continuity on just about all wires in the harness. Checked/cleaned/lubed w dielectric grease- all connections, redid a few that looked old/dirty. I've checked the stator resistances, all good, but have a stator and rectifier ordered anyway, will arrive Sunday. I verified that the rectifier has a voltage output back to charge the battery while cranking - 10.5-11V, low, but expected while starter is engaged. What else can I check as part of troubleshooting? I have a Haines service manual, but the 1999 350 4x4 seems to be an odd model, there isn't an exact electrical diagram for it, but found one for another year that has all the same number of wires and same color wires, so I've referenced that. Any hints, tips or advice would be appreciated! Thanks!
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By qcm413
Hi,
Thanks for a newbie on this site !
i have grinding noise in my front differential. the front right wheel is turning and the left is try to turn but no movement and make sound like a gear broken. somebody have any idea ? not enough oil in diff ?
thank
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By ruslan1o1
Hey everyone looking for a suggestion of where i can start looking. But first I'd like to explain what happened. Took the bike this morning got it started in 6 degrees celsius in 6-7 kicks? No choke. Drove 6km and when shifted to next gear bike decided to just shut off, stopped checked everything out seemed good, started first kick and on i went, drove maybe another 2km bike did same thing but this time it took me 10-15 kicks to get it started, on the third time after a kilometer decided not to start at all. Kicked it like a 450 a couple hundred times, nothing. So far checked gas is good, bypassed fuel filter and on/off valve to eliminate that problem, hot wired the kill switch in case something got corroded there. Nothing. Any suggestions would be welcomed. (Heard valve adjustment are a must do?)
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By 86ccord
Starting this build thread to keep up with everything on my build and hope to motivate someone!
I picked up this 2008 Yamaha Big Bear 250 2 weeks ago. A guy that I hunt with parked it at the hunt club for a year or so before I asked him if he wanted to sell. He said " fill my feeder and throw some batteries in my cameras, and you can have it". Sounds like a deal to me!
I have attached some pictures of how it sat under a tarp in the woods and when I got it home and cleaned up a little.
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By p5200
I've been using Valvolene 10w 40 ATV oil but, it's like $8.00 a quart. Is that about the going rate? Or is there cheaper alternatives that would be suitable? Thanks
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