PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
4. Install the air filter on the air filter
case as shown.
5. Align the match marks and install
the air filter case cover.
EC000082
CAUTION:
@
●
Make sure the air filter is prop-
erly seated in the air filter case.
●
The engine should never be run
without the air filter installed.
Excessive piston and/or cylin-
der wear may result.
@
EAU00630
Carburetor adjustment
The carburetors are important parts of
the engine and require very sophisti-
cated adjustment. Most adjustments
should be left to a Yamaha dealer who
has the professional knowledge and
experience to do so. However, the idle
speed may be adjusted by the owner
as part of routine maintenance.
EC000095
@
The carburetors were set at the
Yamaha factory after many tests. If
they are changed, poor engine per-
formance and damage may result.
@
1. Holder
2. Projection
3. Slot
1. Match marks
E_4xs_Periodic.fm Page 13 Tuesday, November 30, 1999 2:36 PM
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