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I recently acquired an old Bayou from a neighbor that I cleaned up a got running, then from nowhere a problem crops up where it refuses to start........ I pull the plug and it has no spark, pulled the plug cap off and laid the bare wire on the exhaust header and still nothing......once in a while though when I push the starter button but as I let off the button it might spark once. Now it did begin sparking normally just once and I plugged everything back in and it ran normally again until I turned the engine off. Next time I tried starting it we were back to no spark or the one spark deal.
I have tested the stator wires at 140 ohm, the pick up at 130 ohm (I can't seem to find a reliable number for these values online), I bought a new ignition coil and ignition switch on chance those may have been the problem but were not, not sure where to look from here......... does the starter relay switch have anything to do with the ignition on these? I know these older Bayou's are magneto type ignitions and do not need battery power to operate but I wonder if there are safety switches involved I may not be aware of. Also, can someone point me to a good wiring schematic for the magneto 220's? Pre 95 I believe.
thanks for any help!
So I bought a 2001 Quad Runner 250 for my son/wife. Sorry I run a Grizzly 660.
I’ve rode it many times with no issue.
My son’s first time out, I could always hear him but feeling he ran it red line in first gear a lot.
So this is what it was doing during/end of the 2-3 hour ride:
- halfway though noticed smoke (oil) coming from front of the motor sort of under exhaust manifold. Once back at the truck, it was really noticeable. Definitely oil burning off. I’m thinking from the top end maybe.
So quick inspection:
- No leaks or seepage of oil that I could see
- I pulled the plug and it’s black but not wet
- No blue/white smoke in exhaust
- seems to still ride fine
- Engine still has plenty of oil
But now that I’m looking at it back at the house - it’s a hard/won’t start when hot. It starts right up cold no problem but once it stalls when hot, have to let it sit for 10-15 before it will start again.
It wasn’t idling before that trip so I jacked up the idle a bit as well but I think that’s a carb clean/adjustment but...
Any input is appreciated.
Thanks for any help.
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I have a 1998 Big bear 350...the tail pipe/spark arrestor is broke in the exhaust....how can I get it out to replace it? And what's the best way to get the new one in?
got a big bear I'm working on for a guy and it was flooding gas out into the air box, but still running. I pulled the carb and its beat up just like his other bike I worked on for him (the bayou 220). Its a weird carb tho: the throttle comes in at two locations. it has a plunger and a butterfly. Is this necessary and could I just switch to a butterfly carb? The problem with it is it has a broken float fork (the metal piece that holds the float pivot in place. I'm assuming it is causing the flooding. also the rest of the carb is well worn out and most of the screws are stripped telling me that it has been fiddled with too much by someone who didnt know what they were doing. Also, the oil temp light is turns when key is turned and then goes off after a second- dont know if thats supposed to happen or not.
Fixing for a friend. Atv was at a different friends house to be fixed and he rebuilt the carb and had it running nice, then it shut off and no more. He replaced the key and the coil.
So he got busy, so I am helping, I checked the wiring from the stator to the cdi, and from the cdi to the coil. All is good. I checked resistance on the pickup coil, good, and on the source coil, open. I buy a new stator (China) and the 4 prong plug only has 3 wires in it while mine has all 4. I checked resistance in the source coil and it's in the 300's. I pulled one of the old pickup wires out of the old stator and wire it in the new one. Still no spark.
Why do the wires differ, I checked the VIN again and it's "J" for the year and I got a 1988 stator. Please help!
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