Stihl MS 360 C Instruction Manual - Page 30
Tensioning the Saw Chain, Checking Chain Tension, Fuel, firmly, classification TC.
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Tensioning the Saw Chain Checking Chain Tension Fuel english / USA 1 Retensioning during cutting work: : Shut off the engine first - and then loosen the nut. : Hold the bar nose up and use screwdriver to turn tensioning screw (1) clockwise until chain fits snugly against the underside of the bar. : While still holding the bar nose up, tighten down the nut firmly. : Go to chapter "Tensioning the Saw Chain". A new chain has to be retensioned more often than one that has been in use for some time. : Check chain tension frequently - see chapter "During Operation". 133BA024 KN 143BA007 KN : Shut off the engine. : Wear work gloves to protect your hands. : Pull the hand guard toward the rear handle. : Press down the throttle trigger interlock to release the chain brake. : Chain must fit snugly against the underside of the bar - and, with the chain brake disengaged, it must still be possible to pull the chain along the bar by hand. : If necessary, retension the chain. A new chain has to be retensioned more often than one that has been in use for some time. Check chain tension frequently - see chapter "During Operation". This engine is certified to operate on unleaded gasoline and with the mix ratio 50:1. Your two-stroke engine requires a mixture of brand-name gasoline and quality two-stroke engine oil with the classification TC. Use regular branded unleaded gasoline with a minimum octane rating of 89 RON. If the octane rating of the regular grade gasoline in your area is lower use premium unleaded fuel. Note: Units with a catalytic converter require unleaded gasoline. The efficiency of the catalytic converter can drop more than 50 % if several tankfuls of leaded gasoline are used. Fuel with a lower octane rating may result in preignition (causing "pinging") which is accompanied by an increase in engine temperature. This, in turn, increases the risk of the piston seizure and damage to the engine. The chemical composition of the fuel is also important. Some fuel additives not only detrimentally affect elastomers (carburetor diaphragms, oil seals, fuel lines etc.), but magnesium castings as well. This could cause running problems or even damage the engine. For this reason it is essential that you use only name branded fuels! Use only STIHL two-stroke engine oil or equivalent branded two-stroke aircooled engine oils with the classification TC for mixing. MS 360 C 29
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