I have heard that the mix ratios on two strokes typically have a huge safety factor. You could probably run it 50:1 with good oil. I think 32 or 40:1 would be safe. If the tank has run out of oil, or a hose has been disconnected, there is a bleed procedure.
Post by feddies105 on Jan 17, 2006 22:53:11 GMT -5
32:1 is good to run you will never blow it up. it does build up alot of carbon in the exhoust. we run 40:1 with amsoil and we dont see hardly any carbon bulid up. and when i do topends the pistons look really good.
Our PW50 motor seized up after using the one mix fits all ratios oil from Home Depot. I had ran it in my weed eater and gas shears for the previous season without any issues. So, I decided to keep using it and went as far as my Husqvarna saw and PW50. Big mistakes for both of them. The PW50 motor seized up once it got hot, and the saw was down on power. It took a little while for me to put the two incidents together since I used them months apart. I replaced the crap oil with genuine Yamalube 2 Stroke Racing Oil semi-synthetic yesterday and the bike ran flawlessly never seizing all day. Obviouls I would recommend using this oil in the future.
Even after the motor seized up about 7 times it ran great yesterday. Compression and power seemed to be there, enough to pull both of us around a flat yard, I weigh 225 pounds and he about 40. I know, I know- I am killing the suspension. But, this bike will never be raced, just for giggles around the yard.