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What should I do about this , bad oil leak where the filter cover bolts on . Can I use some gasket maker

95 bayou 300 2wheel. This is my first four wheeler. The guy I bought it from showed me slight drip on his floor from a drain plug he recently retapped. I figured I could handle a small leak from a second hand machine. Well after a few times of riding it the bayou seems to be running low on oil. Now maybe this is normal operations as well so I refilled the oil. But the next day I notice my drip on the floor was slightly larger. I wanted to see this drain plug for myself so I took off the skid plate and found a pretty rough looking installed drain plug. It does have a small drop but also seemed to have an excessive gasket and maybe some grey looking “jb-weld” ish material around it. So that’s scary but I figure surely that’s not the only source since my floor spot Grew a bit. I went on to find recent moist around the head gasket for the top end. I’ve never seen it drip but it drips on the new starter the guy installed so it seems the head gasket leaks too. He did say he replaced that gasket when I inquired about the darken stains around that area of the motor. He said he replaced that gasket during. Ring replacement when the bayou was smoking. It no longer smokes by the way. So I continue on thinking well maybe I can do another top end gasket myself some day but still the oil on the floor suggests a more visible leak. I mean it’s not a lot but it grew as I mentioned. Then I find my what seems to be an awful thing. The pull cord and starter was replaced by the preavious owner and it appears there’s a busted area on the crankcase where the left side cover mounts to the L-case.I have not seen oil from there but that looks scary to me. Does this area hold oil? I wondered if it doenst maybe I’ll leave it be but if it does it’s probably the reason I lost some oil. I also found tonight oil on the rubber boot cover I think is for the drive shaft or something. Idk my first ride so I’m unsure of how to proceed. Especially with the case cracked like that. I don’t know how the engine works but if there is indeed oil there in the operation of things it seems like I must do a major engine over haul….. any insight would be so very helpful. I bought this for my daughter but I may have been bitten by going with such An older model.

I just got a used kawasaki bayou 250 and oil is leaking around exhaust stud are there any quick affordable fixes

Hello all, I’m working on my sons 99 Yamaha Warrior 350. When I pulled the plastic cover off left side of engine, I can see oil leak at the seal. I pulled the bolt out and then the starter boss(I guess that’s what it’s called?) I can see that the boss doesn’t make contact with the seal. Is there a spacer of some type that slides on to the boss, to make contact with the seal? This seal is held in place with a plate with 3 screws in it. This boss slides into the bearing in the stator. I have been to parts websites and I don’t see what I’m needing. Maybe it’s just the wrong seal?

My 400ex is leaking oil from top end rocker arm bolts being loose. Can someone tell me what I need to do to fix.