Polaris 650 2023 Owner's Manual page 145

COOLANT LEVEL
The engine coolant level is controlled by the recovery system. The recovery
system components are:
• Coolant bottle/overflow tank
• Pressure cap
• Connecting hoses
• In-bottle Thermostat (650, 850, 9R and 850 Boost models only)
Always maintain the coolant level at or slightly above the FULL COLD mark on
the coolant bottle (when the engine is cold).
1. Stop the engine.
2. Open the right side panel.
3. View the coolant level in the coolant bottle. Add coolant as needed.
Operating the snowmobile with insufficient coolant will result in overheating
and serious engine damage. Always maintain the coolant level as
FLUSHING THE COOLING SYSTEM
To ensure that the coolant maintains its ability to protect the engine, Polaris
recommend that the system be completely drained every five (5) years and fresh
Antifreeze 50/50 Premix added. This service must be performed when the
engine is cold. Your POLARIS dealer can check the coolant when performing
the fall tune-up on your snowmobile.
BLEEDING THE COOLING SYSTEM
The cooling system is a self bleeding system.
Cooling system under pressure. Steam and hot liquids will cause burns to your
skin. Never bleed the cooling system or remove the pressure cap when the
engine is warm or hot. Wear eye protection when servicing the cooling system.
Pressure cap rated at 13 PSI (0.9 BAR). Use of a non-standard pressure cap
will not allow the recovery system to function properly.
NOTICE
recommended.
CAUTION
NOTICE
MAINTENANCE
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