Polaris Hawkeye 4x4 - Manual (Page 46)

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OPERATION
Break-In Period
The break-in period for your new Polaris ATV is the first ten hours of
operation, or the time it takes to use the first two full tanks of gasoline.
No single action on your part is as important as following the
procedures for a proper break-in. Careful treatment of a new engine
and drive components will result in more efficient performance and
longer life for these components.
NOTE: Install the accessory oil cooler if the ATV will be used for
towing heavy loads, dragging ground surfaces or performing
similar activities. Install the accessory oil cooler if the ATV
will be operating longer than 1/2 hour in temperatures above
100° F. (38° C).
CAUTION
Excessive heat build-up during the first three hours of operation
will damage close-fitted engine parts and drive components. Do
not operate at full throttle or high speeds during the first three
hours of use.