Question about Yamaha YZ 250 Motorcycles

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What type of gas does a 4 stroke dirt bike take?

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I run 93 octane in ours(super unleaded) keeps everything nice and clean(and runs smoother in my opinion) yz-maniac

Posted on Oct 11, 2010

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Ok I have a 2004 kawasaki klx125 dirt bike. It was ran on mixed fuel. Will this mess or blow or cease the bike if continued to run on this


Hi, James it won't hurt anything, probably smoke a lot and may oil foul a spark plug, why not just drain it and replace with straight gas if your that concerned for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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1 Answer

How much oil I need to put in gas for dirt bikes


A ratio of 32:1 is pretty standard in 2 stroke dirt bikes. This equals 4 oz. oil per gallon of gas.

Feb 22, 2015 | GAS Motorcycles

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I have a 1993 Honda 125cc was told to mix gas but these oil in crankcase do I need to mix?


You would never mix any fuel and oil for the crankcase. If it is a 2-stroke engine, the fuel and 2-stroke oil will need to be mixed before entering the cylinder. Some engines have an automatic mixing setup - those have a separate oil reservoir for 2-stroke oil, but it will usually be a plastic tank, located nowhere near the crankcase. On a "4matic" engine, it fires like a 4 stroke, but there is no crank case, and the fuel needs to be mixed like a 2 stroke. What is the vehicle you are referencing? A dirt bike or street bike? It seems the CR125 and NR125 are both 2 stroke engines, so somehow the fuel needs to be mixed with 2-stroke oil. Can you take a picture of the crankcase oil cap?

Feb 04, 2015 | Honda Motorcycles

1 Answer

Bike not starting


first try a new spark plug, if you get spark check gas filter, have spark ,have fuel, have timing it should start

Jan 05, 2014 | Pit Bike 125cc 4 Stroke Dirt Bike

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1981 Yamaha towny oil type recommendations


Hi, Anonymous for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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1 Answer

Bike backfires when trying to crank


On most 4 stroke dirt bikes it is not the timing but the valves are out of adjustment. Usually they tightened up as they wear. If you have a manual on the bike it will show you how to check the valves.

Oct 28, 2009 | Sport & Outdoor - Others

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