1. what is the minimum setting for the air/fuel screw?
---stock is 1.5 turns out and for under 40 deg recemends 1.0 turns out, i had it at 1.0 already but want to go to .5

2. the service manual said the counterbalancer holds 100 ml. but drained and refill with 70 to 75 cc.
---- is this a misprint and should read ml.? I drained the counterbalancer and refilled this week.

3. where is the filler for the "crankcase"?
----there is a drain plug next to the counterbalancer drain plug and i can't find it in the manual.

thanks
Jim

 

Hey Jim. I think on question 1 that sounds about right. On number 2 it's 70 cc's which is around 3 oz. And on number 3 There's only a drain plug for the crankcase and it's just to the left of the counterbalancer drain plug if you were sitting on the bike. Hope this helps. Shawn.

 

I can answer one of your questions. There is no crankcase oil, and thus no filler. The bottom end of a two stroke engine (rod and crank bearing) gets lubricated by means of the oil/fuel mixture flowing past them on its way to the combustion chamber. That is why you mix the fuel and oil. Once it has lubricated things, the oil part of the mix isn't needed, but you can't separate it back out so it gets burned during combustion. That is why 2 stroke engines smoke more than 4 strokes - burning oil.

The engine counterbalancer has oil, as you said in your second question, so some people might think that is the crankcase oil, but it is contained in a separate area at the front of the engine, not actually in the crankcase. A Polaris has a gearbox that is a completely separate unit from the engine, much like a Harley Davidson motorcycle, so it will have its own oil and filler, located on the right side behind the rear brake master cylinder reservoir.

 

Thanks Shawn, so is that a min setting (1/2 turn out), you can't "close" it altogether I would imagine?
I am aware of the drain plug but does something need to be drained?

 

Thanks Kudzu, thats what i had thought but why a drain plug? is there some waste from the injection oil that don't get burnt and needs to be drained?

Thanks again guys.
Jim

 

you may be looking at the starter drain plug.

steve

 

no, theres a recoil drain plug at the far right then a starter drain, counterbalancer drain and the "crankcase" drain plug at the left, as sitting on the quad.

 

I'm not where I can look at my Scrambler to see if it has a crankcase drain too, but that wouldn't be unprecedented if it did. I know my 650SX jetski, the old stand up kind, has a crankcase drain that actually has a cable to it and **** on top of the engine to make it easy to get to. I guess they thought it would be a regular thing to need it. And, to be honest, I have sunk it a time or two (you'd think those things would float better!). The engine sucks in water so you pull the plugs, open that crankcase drain and crank it over and water squirts out everywhere. Then you just put the plugs back in and it runs. I've nearly sunk my Scrambler a time or two as well. If it ever got so deep it ingested water in the intake you'd be mighty glad to have a crank drain.

 

im not sure about this drain but i have heard that if you leave the gas turned on that your case can fill up with it....

 

I'm not saying its functional but there is one there and it shows it in the manual , just nothing of what to do with it drain/ fill etc.?
I spent some time under there last weekend.[img]i/expressions/face-icon-small-wink.gif[/img]