- Features
- Technical Details
● Single-cylinder, four-stroke, air-cooled, electric starting engine.
● It adopts a single-cylinder four-valve, SOHC structure, with low air intake resistance, high inflation efficiency and strong power.
● It adopts finger roller rocker arm and cylinder eccentric technology to reduce power loss, longer life and strong power.
● Small size and high performance starter motor, electric starting sound is small.
● The secondary air supply structure is adopted to re-oxidize harmful gases in the exhaust gas and reduce the emission of pollutants.
● Adopting centrifugal oil and gas separation circulation technology, exhaust emissions and oil consumption are lower.
● Adopting the latest platform shifting mechanism, shifting is more labor-saving and provides better in-place feel and comfort.
● An external paper fine filter is used to filter the entire engine oil. Different from the centrifugal partial filtration structure, the heat parts and each kinematic pair have less wear and higher reliability.
● Adopt reinforced main and counter shafts to improve gear fatigue strength and extend service life.
● 18-roller starting overrunning clutch, starting is more reliable.
WIDE OPEN THROTTLE CURVES （YB250F）
WIDE OPEN THROTTLE CURVES （YB250F-1）
INSTALLATION DIMENSIONS