Technical data

36
1 – nut; 2 – pan.
Fig. 15 – Checking the oil level in the air cleaner pan.
3.3.7. Changing Oil in the Engine Crankcase
Drain the used oil from the crankcase when the engine is warmed up. To drain the oil,
unscrew the crankcase plug. After the oil has been drained completely from the crankcase, replace
the plug. Fill the engine with oil through the oil filler neck up to the upper mark on the dipstick.
Use only the oil recommended by this Manual in accordance with the season of operation.
3.3.8. Cleaning the Rotor of the Centrifugal Oil Filter
Clean the rotor of the centrifugal oil filter each time the engine crankcase oil is changed.
Unscrew the nut 1 fastening the cover 2 of the centrifugal oil filter, as shown in Fig. 16
and remove the cover. Block the rotor assembly to prevent rotation by inserting a screwdriver or
rod between the filter housing and the rotor bottom and, turning the nut 4 fastening the rotor cap
by means of a wrench, pull out the rotor cap 3.
Check the condition of the filtering screen; clean and wash it, if necessary.
Remove the layer of deposits from the internal walls of the rotor cap using a scraper.
Before assembling the cap with the rotor housing, lubricate the rubber packing ring with
motor oil. Align the balancing marks on the rotor cap and housing. The cap-fastening nut should
be turned with slight torque until the cap is mounted onto the rotor completely.
After assembling, the rotor shall rotate freely by hand, without jamming.
Replace the cover of the centrifugal oil filter and retighten the cover nut with the torque
of 25.8-36.9 lb.ft (3.5...5.0 kgf m).