Coleman HS400UTV-2 Owner's Manual page 165

low temperature
6 Coolant boils.
7 Engine will not start.
Periodic Maintenance and Adjustment
goes down
If the temperature is under -18 deg C (0 deg F), place the
vehicle in a warmer place before attempting to start.
Check cooling fins on radiator for debris, clean if necessary.
Check temperature sensor of radiator for damage and Check
fan for failure.
Check antifreeze, make sure vehicle has the correct type and
quantity.
Check to make sure the coolant system does not have air
pockets.
Check battery, make sure it is charged and can hold a charge.
Check starter motor for damage.
Check carburetor and fuel filter for blockage.
Check ignition loop, make sure it is in good condition.
Check if spark plug is fouled or burned.
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