heating YAMAHA YFM80R 2005 Owners Manual

6-21
EBU02092
Engine break-in
There is never a more important period in the
life of your machine than the period between
zero and 20 hours.
For this reason, we ask that you carefully read
the following material. Because the engine is
brand new, you must not put an excessive load
on it for the first several hours of running. During
the first 20 hours, the various parts in the engine
wear and polish themselves to the correct oper-
ating clearances.
During this period, prolonged full throttle opera-
tion or any condition which might result in exces-
sive engine heating must be avoided. However,
momentary (2-3 seconds maximum) full throttle
operation under load does not harm the engine.
Each full throttle acceleration sequence should
be followed with a substantial rest period for the
engine by cruising at lower r/min so the engine
can rid itself of the temporary build up of heat.
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cC
Never operate the engine with the air filter ele-
ment removed. This will allow unfiltered air to
enter the engine, causing rapid engine wear
and possible engine damage. Additionally,
operation without the filter element will affect
carburetor jetting with subsequent poor per-
formance and possible engine overheating.
EBU01035
Air intake restrictor plate removal
To obtain full engine performance capability,
removing the air intake restrictor plate is
required.
1. Remove the air filter element. (See page
8-27 for removal and installation procedures.)
2. Remove the air intake restrictor plate.
NOTE:
Store the air intake restrictor plate with the
owner’s manual so you can install it whenever
you want to reduce the top speed available.
3. Install the air filter element.
q
1. Air intake restrictor plate1. Cache réducteur d’air admis1. Placa de restricción de admisión de aire
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