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Polaris ACE 150 EFI (2018 year). Manual - part 15

MAINTENANCE

Engine Oil

Oil Recommendations

Always check and change the engine oil at the intervals outlined in the

Periodic Maintenance Chart beginning on page 57. POLARIS

recommends the use of 366\QWKHWLF Engine Oil for this vehicle.

Mixing brands or using a non-recommended oil may cause serious

engine damage. Always use the recommended oil. Never substitute

or mix oil brands.

Oil Check

Maintain the oil level within the safe

range on the dipstick. Do not overfill.
1. Position the vehicle on a level

surface.

2. Remove the dipstick. Wipe it dry with

a clean cloth.

3. Reinstall the dipstick completely.
4. Remove the dipstick and check the oil

level.

Tip: A rising oil level between checks in cool

weather driving can indicate contaminants

such as gas or moisture collecting in the

crankcase. If the oil level is over the full/

safe mark, change the oil immediately.

5. Add the recommended oil as needed.
6. Reinstall the dipstick.

Dipstick

Full

Add Oil

{

Safe Range

MAINTENANCE

Engine Oil

Oil Change

1. Position the vehicle on a level surface. Set the parking brake.
2. Clean the area around the pre-filter plug.
3. Start the engine. Allow it to idle for two to three minutes.
4. Stop the engine.

Hot oil can cause burns to skin. Do not allow hot oil to contact skin.

5. Remove the 4 nuts/bolts holding the lower chain guard in place. Remove

the lower chain guard to avoid collecting oil as it drains.

6. Place a drain pan under the engine crankcase.
7. Remove the pre-filter plug. Allow the oil to drain completely.
8. Wash the oil pre-filter screen with solvent to remove debris. Allow the

screen to air dry.

9. The external oil filter is located behind the seat on the right-hand side of

the rear swingarm. The screw on the oil filter should be replaced when

oil is changed. With the oil drained from the crankcase, unscrew the oil

filter and replace with a new one. Ensure that the oil filter gasket is

properly seated, lubricated with oil and in good condition. Do not over

tighten the oil filter.

10. Clean the pre-filter plug. Install a new sealing washer on the plug. The

sealing surfaces on the plug and crankcase should be clean and free of

burrs, nicks or scratches.

11. Reassemble the pre-filter screen and spring to the pre-filter plug.
12. Reinstall the pre-filter drain plug. Torque to 11 ft. lbs. (15 Nm).
13. Reinstall the lower chain guard.
14. Remove the dipstick. Add 35.5 oz. (1050 ml) of the recommended oil.

Do not overfill. See the specifications section beginning on page 100 for

capacities.

15. Reinstall the dipstick.
16. Start the engine. Allow it to idle for one to two minutes.
17. Stop the engine and inspect for leaks.
18. Check the oil level. Add oil as needed to bring the level to the upper

mark on the dipstick.

19. Dispose of used oil properly.

MAINTENANCE

Transmission (Main Gearcase)

Always check and change the fluid at the intervals outlined in the

Periodic Maintenance Chart beginning on page 57. POLARIS

recommends the use of AGL Gearcase Lubricant & Transmission

Fluid for this vehicle.

Fluid Check

The fill plug is located on the rear of the gearcase.

Access the fill plug on the right-hand side of the

gearcase.

1. Position the vehicle on a level surface.
2. Remove the fill plug.
3. Check the fluid level.
4. Add the recommended fluid as needed.
5. Reinstall the fill plug.

Fluid Change

The drain plug is located on the bottom of the

gearcase.
1. Remove the fill plug.
2. Place a drain pan under the drain plug.
3. Remove the drain plug. Allow the fluid to drain completely.
4. Clean the drain plug.
5. Reinstall the drain plug with a new o-ring. Torque to 14 ft. lbs. (19

Nm).

6. Add 25 oz. (750 ml) of the recommended fluid to the fill hole. Do

not overfill.

7. Reinstall the fill plug.
8. Check for leaks.
9. Discard used fluid properly.

Fill Plug

Drain Plug

MAINTENANCE

Drive Chain Lubrication

Lubricate the drive chain with POLARIS chain spray lube or an

approved chain lube at the general lubrication interval specified in the

Periodic Maintenance Chart beginning on page 57. Lubricate more

often under severe use, such as in dirty or wet conditions. See page

102 for the part numbers of POLARIS products.

NOTICE: Washing the drive chain with a high pressure washer or gasoline

can cause premature wear and drive chain failure. Don't use a high

pressure washer or gasoline to clean the drive chain.
Adjusting or operating the vehicle with improper rear drive chain

slack can result in severe damage to the transmission and drive

components. Always make sure the slack is within the stated

specifications.

Drive Chain Slack Adjustment

1. Loosen the upper nut.
2. Turn lower nut clockwise in 1/2-turn

increments, then turn upper nut until

tight. Follow this procedure until

chain is at proper tension. Chain

should have 1/4” deflection.

3. Repeat these steps until chain is

adjusted to desired fit.

Lower Nut

Upper Nut

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