Fuel System / Air Intake; Fuel System; Fuel Lines; Fuel Filters - Polaris Sportsman 850 Service Manual

FUEL SYSTEM / AIR INTAKE

FUEL SYSTEM

WARNING
Gasoline is extremely flammable and explosive under
certain conditions.
• Always stop the engine and refuel outdoors or in a well
ventilated area.
• Do not smoke or allow open flames or sparks in or
near the area where refueling is performed or where
gasoline is stored.
• Do not overfill the tank. Do not fill the tank neck.
• If you get gasoline in your eyes or if you swallow
gasoline, seek medical attention immediately.
• If you spill gasoline on your skin or clothing,
immediately wash it off with soap and water and
change clothing.
• Never start the engine or let it run in an enclosed area.
Engine exhaust fumes are poisonous and can result in
loss of consciousness or death in a short time.
• Never drain the fuel when the engine is hot. Severe
burns may result.

FUEL LINES

1. Check fuel lines for signs of wear, deterioration,
damage, or leakage. Replace if necessary.
2. Be sure fuel lines are routed properly and secured
with cable ties where applicable.
CAUTION
Make sure lines are not kinked or pinched.
3. Replace all fuel lines every two years.

FUEL FILTERS

This machine uses a serviceable high-volume, high-
pressure fuel pump that includes a preliminary filter and
an internal fine filter located before the pump regulator. If
the fuel pump filters require service, the fuel pump must
be replaced as an assembly.
NOTE
Refer to Chapter 3 for fuel pump replacement and all
other information related to the EFI System.

VENT LINE

1. Check the vent line from the fuel tank for signs of
wear, deterioration, damage or leakage. Replace the
line every two years.
2. Verify vent line is routed properly and secured with
an appropriate number of cable ties.
CAUTION
Make sure lines are not kinked or pinched.

THROTTLE OPERATION

Check for smooth throttle opening and closing in all
handlebar positions. Throttle lever operation should be
smooth and lever must return freely without binding.
1. Place the gear selector in Park.
2. Set parking brake.
3. Start the engine and let it idle.
4. Turn handlebars from full right to full left. If idle speed
increases at any point in the turning range, inspect
throttle cable routing and condition. If cable is routed
properly and in good condition, no adjustment is
required.
MAINTENANCE
2
2.13