Okay, I'm new to the ATV world, and I just bought my son a 1984 lt50 four wheeler. Can anybody tell me if it's a 2 stroke or 4 stroke engine? I'm assuming it's a 2 stroke, but I want to make sure. Also, do you have to mix the gas and oil like on a lawn mower? If so, what ratio do I use? I know these are simple questions, but I've looked everywhere it seems online without any luck. Thanks for your help.

 

I had the exact same quad. I rebuilt the engine from split case up.Also re-did or rebuilt everything on mine, front to back.

It is a 2-stroke. It is oil injected. The oil resevoir is under the seat.Kind of a pain to get at seat nuts with a 10mm socket. check the tube from the resevoir goes to the pump which is located on the top of the clutch cover on the left side(?).. not sure which side, but it'll have tube going to it, or tubes might be cut & blocked off.The pump sticks up and looks like a little pressure release valve (kinda/sorta). The pump is gear driven, so it varies the mixture, depending on how many revs it gets. They work fine and there is no reason to disconnect. If it has been disconnected, I ran fuel at 40:1. If your child is full throttle maybe go 36 or 32:1. As always, best way to adjust mixture is by checking the plug after running your mixture.

there is only a rear brake. keep very watchful eye on that brake adjustment, as brake wears out super quick if you do any mud or water riding (it gets inside drum and wears it down like sandpaper, even if you don't use brake). On dry stuff, it'll last a long time. Adjustment is simple, you just turn in nut at back of cable (by brake drum). Once you've gone all the way on cable adjustment, you can get more life out of brake shoes by moving brake cam LEVER back a notch, then re-adjust cable. you should get 2 more adjustments this way, and then cam will get to the point where it's fully open and you still have brake lining, but brake won't work.

check chain tension and keep it lubed.

check rear wheel bearings. Again, water and mud wear these out fast. if you need any bearings, there is a # on the side of bearing and you can get them cheaper from a bearing shop than from Suzuki. you can also get sealed bearings from shop.

good luck. BTW, it'd be a great idea to buy a repair manual for it. I found a Haynes manual for mine. Repairmanuals.com may have it.

 

Thank you so much. Hopefully we'll have it up and running in the next week or so.

Lori

 

glad to help. this is an excellent forum for this type of info. PM me if you need any other info on the LT50. I got to know mine pretty good.