The Homelite Super 2 chainsaw operates on an internal combustion engine, which needs both gasoline and oil. Unlike other engines, such as four-cycle engines and higher, the Homelite Super 2's engine does not operate with a separate oil and fuel pump, only a fuel pump. So the Super 2's engine needs a combination fuel of oil and gas.
Super 2 Oil
The Super 2 chainsaw will require a special type of engine oil, different from other engines, such as a boat or snowmobile. The engine oil will need to break apart inside the gasoline, so it must not be as thick and dense as other engine oils. Homelite manufactures a line of this oil intended for use in all of its two-cycle gas engines. This oil will blend sufficiently with the gasoline and protect the cylinder, piston and crankcase. However, purchasing Homelite brand oil isn't a requirement; similar high-quality, two-cycle, air-cooled oil will also work.
Super 2 Gas
The Super 2 chainsaw will also need a slightly different kind of fuel than your car or boat. Super 2 chainsaws can operate with only a higher grade of gasoline, 87 octane and higher, for the oil and gas to ignite properly inside the cylinder. Lower-grade gasoline will leave too much unburned fuel in the cylinder, igniting at a lower temperature. This fuel will also give the necessary power to drive the chain at speeds above 10,000 rpms. Never use fuel additives, such as ethanol or gasohol, in the fuel mix.
Super 2 Mix
When the fuel enters the cylinder and it is not ignited properly, the entire engine will suffer: acceleration will slow to a crawl and the engine may backfire and will eventually shut off. If the mix of gasoline to oil is not set at the proper ratio, the fuel may burn poorly enough inside the cylinder to cause damage to the piston, seals and crankcase. Homelite suggests a mix ratio of 40-to-1 gasoline to oil, but environmental factors, such as elevation or dust, may require an alteration to this ratio.
Mixing the Fuel
To find the proper mix ratio, accounting for environmental regulations, pour the engine oil into the fuel canister. Then pour the gasoline on top; shake the contents to thoroughly blend. (Shake the canister before each use as well.) Fill the tank and run several tanks at the set ratio. Monitor the cutting performance, such as acceleration, power under full load and idling, and slowly thin or enrich the fuel mixture with more oil or gasoline. Strive for the cleanest, smoothest burning fuel that provides the optimum amount of power with protection.
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