Reedless 2 cycle engine

[TrailerRider]

On my 1986 Polaris 250 2 stroke there are no reeds either.
One thing that will make it not run is if the carb leaks thru (even just a little) and gets fluid in the bottom engine case.
There is a convenient drain on the bottom front to drain any gas/oil mix.
Believe me when I say if there is a any fluid in the bottom case, it will not run/start.
Just something else for you to check.

Good luck ! john

Wow someone else that deals with this problem. Our 1987 Polaris 250 2stroke is a reedless engine and when it gets any gas/oil mix in the bottom it plain will not start. I have to drian it through the plug as well. Then she'll run aftre a few dry pulls.

I am betting your gonna whoop some ass with that sled motor Pics/Vids to comes right

[RIDE-RED 250r]

lol thanks man = ) but im a mikuni type of guy . i know them pretty good and as i said they have way better throttle response than the tilly carbs . but thank you for the link man i book marked it just encase ..

right there with ya.....

[3wheelmecca]

Why not a Walbro? those work great on saws and Ive seen big ones. That would make that sled sing in the top end.

[RIDE-RED 250r]

Why not a Walbro? those work great on saws and Ive seen big ones. That would make that sled sing in the top end.

Arctic Cat used Walbros on alot of their Kawi powered sleds back in the 70's as im sure a few other brands did back then.............they are out there. but i think for what this young fellow is looking to do, just rebuilding the carb he has will probably best serve his purpose with minimal expense and modification

[Pafrig]

hey, i just set up a gravity feed and it worked out running. Today at school i welded brakets for a fuel tank, muffler, and transmission mount. THe thing is coming together nicley. i think ratios are about right for eighth mile sprints. im just hoping my lawnmower tranny dosent die too soon.

[Rocketblt]

I think I might have the solution for you pafrig. I don't know if this is comparable, but its worth a shot. I have a 1972 Arctic Cat Lynx with a Kawasaki 292 single banger, and Tilotson Carb. It is reedless and The Tilotson & Walbro carb uses diaphragms and relies off off a carnkcase vacumn\pulse to pump the fuel. It never ran right for 10 years, even the dealers couldn't tune it right. No matter how many carb rebuilt kits I put it in, or how I adjusted the low-high idle mixture screws, it would only run for about 2 minutes, wouldnt idle, and only run high speed before cutting off and fouling plugs. Try checking this! All of this might come down to a .10 cent spring. There is a spring for the fuel inlet lever within the diaphragms. These springs come in different tension sizes to allow a certain amount of fuel to pass through the diaphragms. Go on a weak spring, and you receive too much fuel and plug fouling and flooding. Go with a too tight spring and the engine will only run at high speeds, and no idles. Try ordering a new diaphragm kit from EC Tilotson, and getting a set of springs with different tension setting in them, and attempt your tune from there. Here is theyre link:

http://www.eccarburetors.com/store/i...ain_page=index

Let me know how you make out.

[Pafrig]

Hey, thanks all for the help. It was running and popping wheelies in the school parking lot for a few laps, but then I sheared off a 3/8 tranny driveshaft.... Oh well. Now that I have access to that shop again I'm building it up right. Basicly a mid engine cvt. Then again... I gotta start building a trike!