1998 Scrambler 400 Premix

I bought a 98 Scrambler 400 for my son for Xmas that I am reconditioning - The previous owner already got rid of the oil injection and was using premix at 40:1 - Most of the oil I find like Klotzs or Spectrum says 50:1 what does the forum think the correct ratio should be ?

Also how do I make sure the oil pump will not be a future issue ? can or should it be removed and if so how ?

Thank you in advance !

Brand new 850, alignment out of square to rear wheels

Hey guys so I bought a brand new bike picked it up on Wednesday. I took it arou d the feild here for 5 or 10 mins. Realize its wandering left. No biggie. It's a new bike. Dealer probzblyjhst slapped it together.

Wasn't a big deal to me as I'm no stranger to wrenching. So I setup the stringline, with 2 jackstands, I get up front and crack the jamb nuts on both side of the roads, left and right. Spin one out a couple turns, same with the other. then I tale my carpenters square for measure, the alognemmts almost zeroed out. However I realize that my front drivers wheel is about 1/2" Inside of my string line from rear wheel. On the passenger side front, I'm about 1 to1 1/8" inside of my stringline.

I got the alignment done and set it zero. Thought I'd try that out. But the wheels are out of square to the rear wheels. I took a 8 foot straight edge to get my stringline bang on to see if I was overlooking. Nope I look all around, looking to see if the dealer accidentally installed something wrong or the kid there put a spacer in a wheel on accident or something. I can find anything. Has anyone else had this problem? I will post pics tmo

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94 400l 2×4 kicking my but!!

Hey guys,
I bought old 94 400 L for next to nothing and I am having the hardest time getting it to run. The guy I got it from said that it ran last season. But you all know we all say the same stuff. It will turn over and almost kick off but nothing. It starts back firing through the exhaust and start smoking like it really wants to run but nope. I changed the spark plug. I took the carburetor apart and it is clean as a whistle all the jets are clear and the floats float. I took the reed cage out and inspected the reeds and they all opened and reseated fine. I turned over the motor with the carb. off and it shot out a huge fireball so I know it is getting fire. the thing is when I put my hand over the carb to choke off the air it does not pull a vacuum. I checked the boot or the intake and everything is sealed up tight. I am at my whits end everything is saying it should run but nada

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