Each device has the term of operation. Whatever one may do, nothing is eternal. However this term is directly proportional extents of care for this device. If in time to change the account and greasing materials, then this term can be increased many times over.
Replacement of oil in old models
In old models of chainsaws, such as "Friendship" and Ural, replacement of oil occurs a little heavier, than in new. Engine construction is arranged so that it is possible to find approach to all interlinks of this device. Be it the carburetor, the kickstarter or piston. The motor is similar to form of the domestic moped, but in more compact size. Before changing oil in the engine, remove it from frame. For this purpose turn off the carburetor that it was not interfered with you, remove nasvechnik and unscrew spark plug. From the opposite side from combustible distributor gear turn off the exhaust pipe, she reminds soap tray form. After that unscrew the bolts fastening the engine and frame and remove the motor. Then from it turn off side cover, there will be motor chain and opening conducting in box there. Invert the engine and merge old oil, it is called still working off.
One or one and a half hours after working off completely flows down later, invert the engine back and check motor chain. High turns at operation of the chainsaw stretch it. If necessary replace chain with new. Fill in engine oil, M-8B or otherwise AS-8 very well will approach. This oil is generally filled in in box of motorcycles. It long time does not lose the greasing properties, even because of high turns. It should be changed through three-four seasons, depending on extent of use of the chainsaw.
Replacement of oil in new models
New models of chainsaws have two valves from side and bottom side of cursor. Through lower the working off merges, through side new oil is filled in. The complexity is that most often the engine in new models is completely covered with plastic covering. Before updating the greasing substance, remove completely all plastic. Unscrew the lower valve and let's old oil merge completely. Be extremely attentive. Merge working off in previously prepared capacity. At its hit on the earth, it poisons the soil. When everything has merged, twirl the lower valve and fill in in side new oil. For such chainsaws in auto parts special duple engine oil which also is intended only for them is on sale. Such oil has the softening and cleaning effect that positively influences the equipment and prolongs time of her "life". It is necessary to change such oil through two-three seasons. As well as in last case, everything depends on extent of use of the chainsaw.