PERIODIC MAINTENANCE AND MINOR REPAIR
7-19
77. Install the air filter element by fit-
ting the projection on the air filter
element into the holder in the air
filter case, then tightening the
screws.
EC000082*
CAUTION:@ l
Make sure that the air filter ele-
ment is properly seated in the
air filter case.
l
The engine should never be op-
erated without the air filter ele-
ment installed, otherwise the
pistons and/or cylinders may
become excessively worn. 
@
8. Install the air filter case cover by
installing the bolts.
9. Install the air filter by pushing it
onto the air filter joint, then tighten-
ing the air filter joint clamp screw.
10. Install the air filter case by install-
ing the bolts.
11. Install the cowlings.NOTE:@ Make sure that the air filter case drain
hose is routed as shown. @
EAU00630
Adjusting the carburetors The carburetors are important parts of
the engine and require very sophisti-
cated adjustment. Therefore, most car-
buretor adjustments should be left to a
Yamaha dealer, who has the neces-
sary professional knowledge and expe-
rience. The adjustment described in
the following section, however, may be
serviced by the owner as part of routine
maintenance.
EC000095
CAUTION:_ The carburetors have been set and
extensively tested at the Yamaha
factory. Changing these settings
without sufficient technical knowl-
edge may result in poor perfor-
mance of or damage to the engine. _
1. Air filter case drain hose
E_5jc.book  Page 19  Monday, January 22, 2001  12:12 PM