what should the oil/gas ratio be on a 1994 2 stroke?

 

To be on the safe side 40:1 gas to oil ratio is what I would run. Some even go with 36:1 all the way to 50:1 AND higher, BUT a lot depends on the oil being used. The variable pump from the factory on the 350 and 400 engines were metered about 50:1

 

i think 40 to 1 is a great place to start. just keep watching the plug for oil foul to see if its too much. imo.

 

thanks guys

 

manual says to used 40:1

 

any one know what oils is recomended for a scrambler 400 2x4 (fuel mixture oil and crank case, tranny? ) not sure of these things for this bike recently bought this thing with no information on it. any help would be appreciated

 

<div class="FTQUOTE"><begin quote>Originally posted by: 00polarbear

any one know what oils is recomended for a scrambler 400 2x4 (fuel mixture oil and crank case, tranny? ) not sure of these things for this bike recently bought this thing with no information on it. any help would be appreciated</end quote></div>

If still using oil pump and not premixing,oil tank at front of machine,can use cheapy tcw3 rated wally world oil or better synthetic for oil injection applications. NO crankcase oil in this machine, trans takes AGL synthetic trans fluid. IF pump blocked off and premixing,use 40-1 ratio. NGK BR8ES spark plug. ALSO keep air filter and prefilter CLEAN. Plus has counter balancer fluid 75 cc's 30 weight oil,dipstick under carb

 

there is a counter balance oil on the motor. should be a red plastic cap that unscrews and has a dip stick on it. kinda hard to see but usually have to pull the carb/airbox off to get at it. cant remember what oil or how much goes in there tho

 

thanks guys... new bike for me and no book or anything for it. actually first polaris to. but so far this is the problem iv run into and needing to know oil so bad.....

 

Looks like waterpump seals bad! Needs to be repaired before major damage happens! Antifreeze contamination can destroy bearings and gears in counterbalancer area.