A 40:1 mixture will ensure that there is enough oil with your gas. 3.2 ounces of an oil designed to mix with gas should do fine. It's 3.2 ounces of oil with one gallon of gas.
As for exact DB's I'm unsure, but mine is about the same as a well tuned lawn mower.
That depends entirely on what's wrong with it. If you have no knowledge of this fairly complicated machine, you should take it to a 'small engine and lawn mower' repair shop.
Homelite string trimmers are inexpensive brand that you can probably buy at home depot. Depending on how much trimming you have to do in your lawn, should help you decide on how much you want to put down on a trimmer. I suggest going with a Stihl trimmer or a Poulan Pro. You can probably find a bottom of the line residential unit from these brands for about what you would pay for a homelite maybe a few dollars more, but worth it.http://www.weedwackerstore.com
It is almost a pure compound but it will have had things in it so in effect it is a mixture.
Lawn is killed by herbacides, lack of proper watering, fungus, insect infestation, and excessive fertilizing
Use a broom or switch to spread them before cutting. It is not a good idea to kill the worms they do more good than harm.
Several things can be done to make a beautiful, healthy lawn. They include fertilization, watering, weeding and proper mowing.
Lawn sand is a mixture of fine dry sand and sulphate of iron which is used to kill moss in lawns and encourage growth.
John Deere lawn mowers are famous for being very high quality and with the proper care having quite a long life.
NO points. 2 and 4 cycle engines used on outdoor lawn equipment, chain saws, leaf blowers, trimmers etc. use a simple magneto ignition. the flywheel has a magnet on it and as it spins it passes the coil pick up and as it does the creates a magnetic field to form and after it passes the coil fires. Even a brand new Homelite uses the same ignition system
The fuel/air mixture is compressed by the piston moving upwards, the spark plug ignites that mixture and causes an explosion which pushes the piston downward.
The ratio of Tide detergent to water for lawn application is 1 teaspoon detergent is to 5 gallons of water. This mixture will make dying grass grow.