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NOTICE
Check for damage of the air cleaner gasket before reassembling.
If necessary, please replace and pay attention to assembling
direction, viewing from the air cleaner side.
Before assembling, check breather hose for deterioration or
damage. Replace if necessary. Pay attention to connect the
beveled end shorter (big head end) to the air cleaner housing
while the other end connect to the engine.
NOTICE:
Don’t wash the foam element with the gasoline, acidity, alkalic or organic solvent
Don’t pull and wrest the sponge or it will be damaged.
WARNING: Don’t start the engine without air cleaner or the engine will be quickly worn.
4-3-6 Carburetor
At high altitude, the standard carburetor air-fuel mixture will be excessively
rich. Output power will decrease, and fuel consumption will increase.
Engine performance can be improved by installing a smaller diameter main jet in the carburetor
and readjusting the pilot screw. If you always operate the engine at altitudes higher than sea level
1000 meters over, have RATO authorized dealer perform this carburetor modification. If not,
should lower load power in operating gasoline engine.
Even equipped with suitable carburetor, engine horsepower will decrease approximately 3.5% for
each 300 meter increase in altitude. The effect of altitude on horsepower will be lowered greater
than this if no carburetor modification is made.
If a carburetor suitable to high altitude is equipped with engine suitable to a lower altitude,
the lean air fuel mixture will make engine output power lowering, over-heat and seriously
damage.
The gasoline enters into the carburetor from the fuel tank and fuel filter. The fuel filter can filter
the foreign matters in the gasoline and oxide out of the fuel tank. If having quality defectiveness,
partly foreign matters will enter into the carburetor. Otherwise, the gasoline contains some
composition which can form the colloid after long sediment, and attach in the carburetor parts
Breather hose