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TO MIX THE FUELSee Figure 3.? The product is powered by a 2-stroke engine and requires pre-mixing petrol with2-stroke oil. Pre-mix unleaded petrol and 2-stroke engine oil in a clean containerapproved for petrol.? The engine is certified to operate on unleaded petrol intended for automotive usewith an octane rating of 91 ([R+M]/2) or higher.? Do not use any type of pre-mixed petrol/oil from fuel service stations, such asthe pre-mixed petrol/oil intended for use in mopeds, motorcycles, etc. Do not useautomotive oil or 2-stroke outboard oil.? Use only synthetic 2-stroke oil.? Mix 2% of synthetic 2-stroke oil into the petrol. This is a 50:1 ratio
The engine on that trimmer will be a 2 stroke 30cc engine not a 4 stroke.
"Two Stroke Oil" is added to the fuel for a 2 stroke fuel mix in accordance with the proportions specified by Ryobi for that engine. The required petrol/oil mix may be printed on the top of the fuel cap. No other oil is used in a 2 stroke engine.
There are a number of videos on Youtube people have uploaded which will show you how to replace the pull cord on a trimmer.
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?
There is a special 2-stroke engine oil mix that you can purchase at various stores that have outdoor equipment or you can also find mix at Walmart. There are instructions for proper mixing on the bottle.
Remember not to put 2-stroke mixed fuel in your lawn mower unless it is also 2-stroke (rare). And the converse is also true, do not put your 4-stroke lawn mower fuel in your 2-stroke weed eater.
Determine if your engine is a two-stroke or a four-stroke. Check the gas
tank on your lawnmower or the owner's manual to determine what type of
engine you have.
Read the label of your two-stroke oil. Follow the directions on the
package to ensure the right mix. Measure and pour the gasoline in to the empty gas can.
Add four ounces of two-stroke oil per each gallon of gas.
Replace the cap on the gas can and shake the oil and gas to mix. Add
fuel to your engine.
The fuel to oil ratio tells how much fuel and oil to mix for a given 2 stroke engine. It can be different depending on the recommedation from the manufacturer. NOT ALL 2 STROKE ENGINES USE THE SAME RATIO. You have to know the manufacturer recommendation for your engine.
i guess your asking if its a 2 stroke or a 4 stroke right ?
2 stroke engines dont have an oil filler cap , just a fuel filling point, the fuel used in a 2 stroke is just normal unleaded (aus) but you mix 2 stroke oil in the fuel before filling (about 50/1) or whatever it recomends.
4 stroke uses the same fuel but you dont mix the oil with the fuel , it has its own filler point for oil , however you must use a 4 stroke oil with these .
hope this is what you were after.
DO NOT mix oil in the gas on your four stroke engine. You will foul the spark plug(s), build up deposits on the valves and head, and make a smokey, smelly mess. A two stroke engine uses the fuel/oil mix to lubricate the engine before being used as fuel. A four stroke engine has a separate lubrication system and does not normally burn any oil. As the name implies, a two stroke engine works in two strokes. The first stroke is downward, where the fuel/oil mix and air are drawn into the cylinder. The momentum from the crankshaft counterbalance or force from the other cylinder(s) drive the piston back up compressing the mix, and the spark plug sparks at or slightly before the top of the stroke. The rapid combustion of the fuel/oil/air mix drives the piston down, which is the power stroke, and then the cycle starts all over again. A four stroke engine has an intake stroke down taking in the fuel/air mix, a compression stroke up, a power stroke down as the fuel/air mix is ignited at or before the top of the stroke, and a exhaust stroke up before starting all over again. A four stroke is much cleaner and more reliable than a two stroke, but it is heavier and has less torque. A two stroke engine is much lighter and has more torque, but takes more maintenance.
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