what do you have to check/matenince often on a 2-stroke i know the air filter has to be clean regulary, what kind of pre mix works best , what ratio do you mix your gas, what other things do you have to check regualry

 

just the filter and change the oil reguraly. and make sure you mix you gas/oil mix right

 

There is no oil to change on a two stroke. On non-oil injected models you need to see your owners manual. I have several two stroke moters, and so I end up with several labled gas cans, one each for 16:1, 24:1, 32:1, 50:1. I've also seen moters that wanted 20:1 and 40:1, but I don't own any of those. The right mix is important, and as every engine is different I won't venture to guess. BTW, the newer the engine the less oil it needs in general.

Adding oil to the gas decreases the octane. No oil will give you more power, perfect if you are trying win the off the line quarter mile with no warm up - expect to rebuild your engine after every run though. Adding extra oil makes the spark plug foul faster, but can increase engine life a little bit, so long as you don't get low octane problems. (But not much or they would recomend it)

Other then finding out what the right pre-mix is and always using it, and cleaning the air filter keep several spark plugs handy and know how to change them in the field. 2 strokes are murder on spark plugs, I never go anywhere without at least one extra spark plug.

There isn't much maintance on a 2 stroke. No oil to change (Note, your transmission might have oil to change!). pre-mix is part of getting gas.

In the long run a 4 stroke is a long running more reliable, cleaner engine. 2 strokes can be reliable, but run both with the proper maintaine exactly the same and the 2 stroke will need a rebuild first. That said, I have 2 strokes from the 1940s that still run great.

 

When I was racing Moto back in the 80's our mechanic would change the piston and rings every 5 races. Thats 5 races not motos. We never once had a problem. We also ran Bel-ray oil at 50:1.
Some people do it more often but that seemed to work for us. It easy to replace a piston and rings on 2 stroke. Although it gets pricey but we weren't worried about that because American Honda picked up that bill. We had a support ride with Honda in the early 80's.

 

well at least on a 250r you have to change oil, you have to put in oil to keep the clutch and tranny lubercated!!!!!

 

thats what i meant in the tranny changint the oil.