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9 parts petrol 1 part oil?whoops-that was total nonsense,should have read 19 parts.But others say 40:1I think I`m wasting oil
better starting because your spark plug does not fowl up.
We use 50:1 mix for all strimmers, chainsaws, leaf blowers and hedgecutters at work. BUT IT MUST BE THE PROPER OIL SOLD FOR THE PURPOSE, such as Stihl, and Husqvarna being the most common. With this oil and mix you get mush less exhaust smokeyness and better starting because your spark plug does not fowl up.