Break-In Period

Content Source: 2021 600/850 AXYS Switchback Assault / RMK / SKS / Indy / Voyageur Owner’s Manual (9931265 R01) > Operation Chapter

IMPORTANT

The Owner's Manual for this vehicle contains warnings, instructions and other information you must read and fully understand before safely riding or performing maintenance on this vehicle.Always follow the warnings and instructions in Owner's Manual.

Click the CONTENTS link above for the Table Of Contents, or download a full PDF of the Owner Manual in the Owner Support area of Polaris.com

Break-In Period

Engine Break-In

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 AXYS 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.

Engine Break-In Periods

600 Models

Break-In Function	Engine Run Time Duration	Description
Fuel Injectors	2 hours *	5% additional fuel
600 AXYS Engine Oil Pump Enrichment Period	5 Hours *	5% additional enriched oil supply to engine
* = Total engine run time above 5,500 RPM

850 Models

Break-In Function	Engine Run Time Duration	Description
Fuel Injectors	2 hours *	2% additional fuel
Oil Pump Enrichment Period	10 Hours *	15% additional enriched oil supply to engine
* = Total engine run time above 3,500 RPM

Oil Injection System

Always check and fill the oil bottle during pre-ride inspection and refueling.

NOTICE

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, contact your dealer or other certified technician immediately.

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.
New drive belts should be washed with warm, soapy water and allowed to air dry prior to 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.