Polaris 2007 Sportsman 450 EFI, Service Manual

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2.19
MAINTENANCE
2
New Batteries: Batteries must be fully charged
before use or battery life can be reduced by 10-30%
of full potential
. Charge battery for 3-5 hours at a
current equivalent of 1/10 of the battery’s rated amp/
hour capacity (i.e. 12amp hr x .10 = 1.2 amp charg-
ing). Do not use the alternator to charge a new bat-
tery.
Liquid Cooling System Overview
The engine coolant level is controlled or maintained by the
recovery system. The recovery system components are the
recovery 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 recovery 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 machines is normal as the
system is purging itself of trapped air. Observe coolant levels
often during the break-in period.
Overheating of engine could occur if air is not fully purged from
system.
Polaris Premium 60/40 is already premixed and ready to use. Do
not dilute with water.
Coolant Strength / Type
Test the strength of the coolant using an antifreeze hydrometer.
• A 50/50 or 60/40 mixture of antifreeze and distilled
water will provide the optimum cooling, corrosion
protection, and antifreeze protection.
• Do not use tap water, straight antifreeze, or straight
water in the system. Tap water contains minerals and
impurities which build up in the system.
• Straight water or antifreeze may cause the system to
freeze, corrode, or overheat.
Cooling System Hoses
1. Inspect all hoses for cracks, deterioration, abrasion or
leaks. Replace if necessary.
2. Check tightness of all hose clamps.
Radiator/Grill Screen
1. Check radiator (A) air passages for restrictions or damage.
Check and clean the radiator screen (B).
2. Carefully straighten any bent radiator fins.
3. Remove any obstructions with compressed air or low
pressure water.
Polaris 60/40 Anti-Freeze/ Coolant
(PN 2871323)
Antifreeze Hydrometer
CAUTION
Do not over-tighten hose clamps at radiator,
or radiator fitting may distort,
causing a restriction to coolant flow.
Radiator hose clamp torque is 36 in. lbs. (4 Nm).
A
B