The Craftsman 2.0 chain saw , as with all natural gas - power Craftsman sawing machine , need mixed fuel for combustion . This fuel combine petrol and an engine oil , which lubricates the plunger and crankcase during mathematical operation . Without this specific amount of locomotive engine fossil oil , the piston would overheat and ball up out the cylinder , ruining the seal , piston and crankcase .
Chainsaw Oil
The railway locomotive need oil to keep the crankcase lubricated to keep the piston moving at high speeding . Unlike cars or boats , the Craftsman 2.0 chainsaw does n’t use an crude oil pump to deliver oil colour into the crankcase . This oil , designed especially for two - stroke railway locomotive , will break apart equally inside the gas , so when it combust , a small amount of residual oil develops on the cylinder walls and on the crankshaft . If possible , use only oil recommended for utilisation in two - fortuity air - cool engines , which will evenly separate . However if no chainsaw oil is available , mix the fuel with new SAE 30 locomotive engine oil color .
Chainsaw Gasoline
The Craftsman chainsaw hunt down at high speed , often higher than 10,000 RPM , so it postulate a higher - caliber gas to keep the piston at the right operating temperature . A petrol grade at 87 or higher is broadly speaking advocate for enjoyment in the 2.0 chainsaw . However , this fuel grade is n’t an absolute necessity , but it will increase the performance and living of the locomotive engine . Never expend gasoline with other additives , such as ethanol or gasohol , and never use diesel gasoline for the mix .
Oil-Gas Ratio
The Craftsman 2.0 chain saw is an older model of chainsaw , so it ’s likely that some — if not all — of the fuel components in your chain saw are dirty or restrain . If you have n’t done so , put back the entire fuel lines and pickup arm , and clean house the carburettor thoroughly , which will allow you to get a better , skimpy fuel mixture into the engine . While Craftsman recommends a throttle - to - oil variety of 32:1 up to a 40:1 mixture , other factors , such as air quality or meridian , may castrate the required amount of oil for your engine .
Finding Right Mixture
Getting the ripe miscellany for your 2.0 chainsaw in your area will take some trial and error . mix in a raft of gasoline on the rich side of the musical scale , starting at about 30:1 . Run several cooler of gas pedal with this mixture , and monitor the engine performance during quickening , stagnate and power at full load . If the locomotive is sulky or drops under lading , list the formula up to the higher final stage of 40:1 . If you ’re at a high elevation , you may require to launch the formula up to 50:1 , though this will put added pressure on the locomotive engine and may cause impairment .
