Polaris RANGER 1000 2023 Owner's Manual page 107

MAINTENANCE
WET FOULED PLUG
The wet fouled insulator tip is black. A damp oil film covers the firing end. There
may be a carbon layer over the entire nose. Generally, the electrodes are not
worn. General causes of fouling are excessive oil, use of non-recommended oil
or poor fuel quality.
COOLING SYSTEM
The engine coolant level is controlled or maintained by the recovery system. The
recovery system components are the overflow bottle, radiator filler neck, radiator
pressure cap and connecting hose.
As coolant operating temperature increases, the expanding (heated) excess
coolant is forced out of the radiator, past the pressure cap, and into the overflow
bottle. As engine coolant temperature decreases, the contracting (cooled)
coolant is drawn back up from the tank, past the pressure cap, and into the
radiator.
Some coolant level drop on new vehicles is normal as the system is purging
itself of trapped air. Observe coolant levels and maintain as recommended by
adding coolant to the overflow bottle.
ADDING OR CHANGING COOLANT
POLARIS recommends the use of POLARIS Antifreeze 50/50 Premix. This
antifreeze is already premixed and ready to use. Do not dilute with water.
To ensure that the coolant maintains its ability to protect the engine, we
recommend that the system be completely drained every five (5) years and fresh
Antifreeze 50/50 Premix added.
Any time the cooling system has been drained for maintenance or repair,
replace the coolant with fresh Antifreeze 50/50 Premix. If the recovery bottle has
run dry, the level in the radiator should be inspected. Add coolant as needed.
RADIATOR AND COOLING FAN
Always check and clean the screen and radiator fins at the intervals outlined in
the Periodic Maintenance Chart. Do not obstruct or deflect air flow through the
radiator by installing unauthorized accessories in front of the radiator or behind
the cooling fan. Interference with the radiator air flow can lead to overheating
and consequent engine damage.
NOTICE
Washing the vehicle with a high-pressure hose could damage the radiator fins
and impair the radiator's effectiveness. Using a high-pressure system is not
recommended.
105