Arizona

was going to adjust the clutch but lucky me the 300 it looks like you have to take off the case to do that. There are 2 covers on the clutch side, took both off nothing there, looks like adjustments are internal. May put it off until I finish the Polaris. Az

Ok, so its been a while on this bayou 300. It runs great but has a tapping noise from the motor. Gets worse as it warms up. Runs smooth, but that noise is pretty loud, I know its hard to identify motor noises but thinking may need piston. Gonna eventually pull it apart after done with my other project. Not sure what rod bearings sound like on a atv but to me it sounds like piston or wristpin. What you think. You tube video here--------

So few months ago I acquired a 01 Explorer 4x4 (think its a 350 but not sure) Anyway the owner said it started reving very high, shut the key off and still kept running until finally he shut off fuel and it finally died. During the run away he said the exhaust got red hot and has melted plastics to prove it. Said some thing flew out the tail pipe, I kinda figured it was the top of the piston. Anyway finally got around to looking at it (have a lot of other projects in the works) and checked the compression, Shows about 40 psi. Can hear air coming out the carb while rotating the motor over. Gonna pull it apart eventually, don't hear any noises or binding in the stroke, You think the piston came apart? any horror stories of these and is it worth my effort and money? Don't really have any money in it yet. Thoughts? Az

Well im looking into a used oem carb. The online engine builder says he has a few and should call me back. also found 1 on ebay but looks pretty rough. Ign. coil was putting out about 28kv I sure find the weird ones! Az

talked to an atv engine builder and he said you will get different compression readings between no throttle and full throttle. Should be checked at full throttle. I checked the online manual and it says check at wot

I agree weird readings. But they are repeatable. Just depends if throttle is open or not. Would think cam problems would be constant. I cant think of anything that would make them change due to throttle angle. Im stumped. Any Yamaha motor builders out there that have ideas? On a second note, after screwing with the second carb I got it to go quite a bit faster but still not right. I can floor it in neutral and it wont redline. Just revs about half of what it should be. Pretty odd as it idles pretty smooth and starts pretty easy. Hoping for some knowledge on the motor Az

Yes the compression changes every time I either open or close the throttle. Never heard of the readings changing with throttle angle. It will read 125 as long as throttle is opened. If not it reads about 85psi. The motor runs super smooth at idle and doesn't smoke. Any ideas what I should do with it or just leave it alone? Now second thing. I do not have the oem carb. Should I try the jet kit on the new Chinese carb? or wasting my money? Az

Well was going to tear it down today but double checked a few things rechecked compression, right at 85psi then rechecked compression with throttle wide open and I get 125 psi. Double checked and confirmed with throttle open 125 psi. so I assume the motor is not the issue. Still looking at the carb as it feels like a carb issue. Similar to problems with the Kaw bayou 300 I had. So gonna set the valves before I put it together, Since I don't have original carb and have tried 2 Chinese carbs, should I try a jet kit and install in this carb? If so what ones do you have the most luck as far as accuracy with? Might also see if ign. coil is putting out enough volts, I am assuming it should at least put out 20kv Any other ideas? Thanks Az

usually a good smack to the fuel bowl with a screwdriver handle will bust it loose.

So my latest find is a Moto 4 250. Looked in good shape, started right up but would backfire and die upon acceleration but you could get it to go if you were good with the throttle. I figured it was the carb. was a brand new Chinese carb, he didn't have original. I took it apart and cleaned it, only thing I found was some debris in main jet and the main adjustment on bottom was at 41 turns. Cleaned it out and set at 2 turns, re installed. Starts up, runs better actually drove it but seems really sluggish, once I hit 3rd gear could barely pull it. Rechecked everything, even ordered a new carb as I had this problem with another atv but still same problem. Now I pull it apart and decided to check compression, I show only 85 psi. I checked valve adjustment (after aligning up cam gear to mark on case). to make sure not too tight still right at 85 psi. I assume I need to pull the head and look at the valves, Any ideas I am missing something? motor does not smoke but is super sluggish. The specs I find are off the downloaded manual of a 94 but figure should be the same. It states compression standard is 128 and Minimum is 114 and Max is 142 Any other Ideas before I tear it down? Thanks in advance Az

Nice of you to let the kid have it. Nice work, like the green and the air filter color matches as well.

Well decided to do the drive yesterday after work. Looked at the Yam 250 and in pretty good condition. Starts right up, new tires, all lights work etc. Just needs carb redone and some detailing. Tried to get Willie and the boys to help load it up lol Az

I rarely put that much into my finds, In order to make any money you have to buy them cheap and watch your costs. Hell I even figure out the gas spent to look at some if its worth it or not. Now if it was my personal one that I was keeping I can see spending more than planned. So where are the pics of your barn find? I assume was a good deal. Im after one probably tomorrow but a long drive and not sure if worth the effort. Pics to follow. Az

1350.00 But probably end up around 1150 or so. Just put it up and someone wants it for 1000 I think I will wait and see what it brings. That thing is super clean and runs really good. Az

Ok, so the Bayou 220 is done and gonna post for sale. Couple of pics. Gotta love that old nasty seat lol. That's the best I could do with that beat to hell muffler. Must have flipped it at one time. Az

The Mojave turned out great, good job. I try to limit myself on the price and if I cant get it fairly cheap ill pass. Few things matter is the shape, If I can find parts, the price and what I think I will have to put in to it to fix. If you pay too much you will never get your money out of it. Its fun to build them but it has to be profitable. Hey Ajmboy, the paint I use is usually semi gloss rustoleum from Lowes. Its all in the prep. spend a little time before painting goes a long way. Most people will buy a clean machine pretty quickly. I always make sure nothing is rigged and is working a 100 % Some of the most expensive items are batteries (which they all need) and Tires.

So I sold the Moto 4 a few weeks ago, did good on the profit. Today I Sold the TimberWolf, Man that thing was a blast to ride, wheelie city! Get this I ended up trading it for a 01 Polaris Explorer 4x4. and he also gave me 900.00 Catch is he blew the motor. I pulled the pull cord and no compression. He said it got super hot and would not turn off with the key. I assume it was dieseling off the 2 stroke oil, any way he said some thing flew out the tail pipe (Yea probably the top of the piston) and wont start now. So its on the back burner while I finish the 220. Couple of pics. Some of the Timberwolf and the rest of the Polaris. Stay Tuned lol Az.

Well the reverse cam stopper showed the other day so I installed it and rechecked the readings on the switch. I showed good so I just sanded down the switch like you said and installed it. Put it all back together and now I get a neutral light and im sure its gonna crank when I get a battery. You nailed it. Just a 12 dollar part and some labor and it seems fixed. Thanks for the info. Now the 220 is out of the paint shop, some pics Az.

Well already ordered one and cant be returned cheaply so ill just replace it. Have switch off ohms out ok then goes open then ok etc. might be me moving the contacts lol. I did ohm the pin on the reverse stop to ground and not liking the readings so I ordered a new one anyway. Cheap insurance while in there. What holds the reverse stop in on that shaft? is it just floating there. Just remove the c clip and the tensioner and it slides out? Some pics for your enjoyment

Great man, exactly what I needed to see. Let you know how it goes. Az

On one of the atv I recently purchased the neutral switch is bad, Any one ever replaced one. looking for some pics. I assume I need to remove the drive shaft to pull the cover foward to clear the gear shift shaft. Any easy ways to do this. So far have motor moved forward all bolts out except nuts on drive shaft which are loose Thanks Az

Little of both but mostly paint. Seems to scrape off pretty easily. Gonna hit it with the power washer on my day off and see how much flies off lol. Az

Well yesterday went shopping, found this 02 Honda, pretty dirty but in perfect working order except for rear brakes and maybe some brake cable and tlc needed. Starts right up and runs pretty good. Ended trading for a .22 that I paid nothing for and a C-note.

Started tearing it apart, pulled the carb to rebuild, removed exhaust, battery, fenders etc. cleaned it up pretty good, did some painting, reinstalled exhaust, carb, other accessories and got it to fire up. Runs pretty good. Ordered me a seat cover, battery and front tires and a petcock. few more pics after. Will post finished pics when done. Next will be the Bayou 220 Az

Yea it came with the seat but was off and did not want it to blow out of the truck so I had it inside. I don't know whats up with people wiring batteries backwards. The Bayou 300 I have was wired the positive and bolted it to ground! People just dont pay attention. Thank god most batteries are dead when I get them.