Vehicle Break-In; Engine Break-In Period; Engine Break-In Periods; Drive Belt Break-In - Polaris 850 MATRYX INDY XC 129 2021 Manual

MAINTENANCE

VEHICLE BREAK-IN

ENGINE BREAK-IN PERIOD

IMPORTANT
Engines equipped with an electronic oil pump do not
require initial fuel premix.
Excessive heat build-up during the first three hours of
operation will damage close-fitted engine parts. Do not
operate at full throttle or high speeds for extended
periods during the first three hours of use. Vary the
throttle openings and vehicle speeds to reduce friction on
all close-fitting machined parts, allowing them to break in
slowly without damage.
NOTICE
The engine management system utilizes both a fuel
injector break-in period and oil pump enrichment
program. The duration of these break-in programs are
independent of each other and are timed-out based on
engine run-time. Regardless of these automatic engine
break-in / enrichment features, the following engine
break-in procedures must be performed when the
engine is new or overhauled.
IMPORTANT
Never mix brands of oil. Serious chemical reactions can
cause injection system blockage, resulting in serious
engine damage. Oils may also be incompatible and the
result could be sludge formation, filter blockage, and
reduced cold weather flow rates. All Polaris oils are
compatible with each other.
Drive with extra caution during the break-in period.
Perform regular checks on fluid levels, lines, and all other
important areas of the snowmobile.
Always check and fill the oil bottle when refueling.
IMPORTANT
Serious engine damage can occur without the proper
lubrication. Check the oil bottle level often during the
first tank of fuel. If the oil level doesn't go down, inspect
oil injection system.
NOTICE
For rebuilt engines, reset the Oil Pump Enrichment
Mode Timer.
2.6

ENGINE BREAK-IN PERIODS

FUNCTION
Fuel Injectors
Enrichment

DRIVE BELT BREAK-IN

The break-in period for a new drive belt is 30 miles (48
km). During this time, vary the throttle position under
50% and limit full throttle use.
Always take time to warm up the belt and driveline prior
to operating the snowmobile. Free the track and skis
from the ground before engaging throttle.

TRACK BREAK-IN

A new track will stretch during its break-in period. A
typical track will be properly broken-in between 250-500
miles (400-800 km).
Track break-in time is dependent on track type, riding
style, and whether your snowmobile is equipped with
During the track break-in period, Polaris recommends
checking track tension after every completed riding day
when the track is new. See Maintenance chapter for
more information.
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
ENGINE RUN
BREAK-IN
TIME
DURATION
2 hours *
Oil Pump
10 Hours *
Period
* = Total engine run time above 3,500 RPM
IMPORTANT
studs.
DESCRIPTION
2% additional
fuel
15% additional
enriched oil
supply to engine
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