Polaris ACE 150 EFI (2018 year). Manual - part 23

96

MAINTENANCE

Cleaning and Storage

Storage Tips

NOTICE: Starting the engine during the storage period will disturb the 

protective film created by fogging and damage could occur. Never 

start the engine during the storage period.

Clean the Exterior
Make any necessary repairs and clean the vehicle as recommended. 

See page 93.
Stabilize the Fuel
1. Fill the fuel tank.
2. Add POLARIS Carbon Clean Fuel Treatment or POLARIS Fuel 

Stabilizer or equivalent fuel treatments or stabilizers. Follow the 

instructions on the container for recommended amount. Carbon 

Clean removes water from fuel systems, stabilizes fuel, and 

removes carbon deposits from pistons, rings, valves, and exhaust 

systems.

3. Allow engine to run 15-20 minutes to allow stabilizer to disperse 

through entire fuel system.

Air Filter / Air Box
Inspect and clean or replace the air filter. See page 76. Clean the air 

box. Drain the sediment tube.
Fluid Levels
Inspect the fluid levels. Add or change fluids as recommended in the 

Periodic Maintenance Chart beginning on page 57.
• Transmission fluid
• Brake fluid (change every two years and any time the fluid looks 

dark or contaminated)

Engine Oil
Change the oil. See page 66.

97

MAINTENANCE

Cleaning and Storage

Storage Tips

Inspect and Lubricate
Inspect all cables and lubricate all areas of the vehicle as 

recommended in the Periodic Maintenance Chart beginning on page 

57.
Fog the Engine
1. Treat the fuel system with POLARIS Carbon Clean or other 

equivalent fuel treatment. Follow the instructions on the container. 

Start the engine. Allow it to idle for several minutes so the Carbon 

Clean reaches the injectors. Stop the engine.

2. Remove the spark plug and add 2-3 tablespoons of engine oil. To 

access the plug hole, use a section of clear 1/4” hose and a small 

plastic squeeze bottle filled with the pre-measured amount of oil.

3. Reinstall the spark plug. Torque to specification. See page 71.
4. Apply dielectric grease to the inside of the spark plug cap. Do not 

reinstall the cap onto the plug at this step. 

5. Turn the engine over several times. Oil will be forced in and 

around the piston rings and ring lands, coating the cylinder with a 

protective film of fresh oil.

6. If fuel system additive is not used, fuel tank, fuel lines, and 

injectors should be completely drained of gasoline.

7. Reinstall the spark plug cap to the spark plug.

98

MAINTENANCE

Cleaning and Storage

Removal from Storage

1. Check the battery and charge if necessary. Install it in the vehicle. 
2. Make sure the spark plug is tight.
3. Fill the fuel tank with fuel.
4. Check all the points listed in the Daily Pre-Ride Inspection section 

on page 43. Tightness of the bolts, nuts and other fasteners should 

be checked by an authorized POLARIS dealer or other qualified 

service facility.

5. Lubricate at the intervals outlined in the Periodic Maintenance 

Chart beginning on page 57.

Battery Maintenance 
See pages 90-92 for storage and charging procedures.
Storage Area/Covers
Be sure the storage area is well ventilated. Cover the vehicle with a 

genuine POLARIS cover. Do not use plastic or coated materials. They 

do not allow enough ventilation to prevent condensation, and may 

promote corrosion and oxidation.

99

MAINTENANCE

Transporting the Vehicle

Follow these procedures when transporting the vehicle.
1. Place the transmission in neutral. Set the 

parking brake. 

2. Stop the engine.
3. Remove the key to prevent loss during 

transporting.

4. Secure the fuel cap and seat. Ensure that 

the seat is attached correctly and is not 

loose.

NOTICE: Always tie the frame of the POLARIS 

vehicle to the transporting unit securely 

with suitable straps or rope. Do not attach 

tie straps to the front control arm bolt 

pockets.

5. Wrap the front tie strap through the frame 

tubes, or attach a tie-down hook around 

each of the tubes.

6. Wrap the rear tie strap around the swing 

arm.

Step 5

Step 5

Step 6

Tubes