Disconnect hoses 9 and 5 (see fig. 35) ventilation system from the nozzles, remove the flame arrester 8 from the hose 9, remove the cover 10 of the oil separator and wash them with gasoline or kerosene. Replace damaged hoses with new ones.
Rinse the spool of the carburetor, the cavities and pipes of the air filter through which crankcase gases pass.