Yamaha YB50 Service Manual page 39

CLEANING AIR FILTER
2. Remove:
• Air filter box
• Air filter
ATTENTION:
Never start up the engine with the air filter
removed. This will allow the entry of unfilte-
red air, causing rapid wear and possible
damage to the engine. Also, using the engi-
ne without the filter will affect the carburet-
tor jets resulting in poor performance and
the possible overheating of the engine.
Be careful not to block the inlet area of the
air filter with cloths or rags.
3. Inspect:
• Damaged element
4. Clean:
• Air filter
Steps for cleaning air filter:
• Wash the filter carefully but completely with
solvent.
s WARNING
s
Never use solvents with a low flammability
point, such as petrol, to clean the filter.
Such solvents may cause fire or explosions.
• Clean off excess solvent from the filter and
leave it to dry.
ATTENTION:
Do not wring the filter when drying it.
• Apply oil for foam air filters or YAMAHA 2T
engine oil or equivalent oil for 2 stroke air-
cooled engines.
• Wipe off the excess oil.
NOTE:
The filter should be wet but not dripping.
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