Husqvarna ST131 [13/31] Servicing your engine

Snow Engine Manual 10rev. 01/04/16

SNOW ENGINE OIL CHANGE PROCEDURE

1. Begin the oil change with a cold engine.

2. Start and run the engine for 1-2 minutes.

3. Turn the engine off.

4. Place the rocker switch in the stop position.

5. Remove the snow safety key.

6. The body of the oil drain tube (if equipped) should be supported as the oil

drain plug is removed. Support the body of the oil drain tube with a 14mm

10. Rell the crankcase with the proper oil type and amount.

11. Checking oil with a dip stick; screw the dip stick cap down tightly, then remove

and check oil level.

ENGINE OIL RECOMMENDATIONS

• Engine oil affects performance and service life. Use 4-cycle automotive detergent oil.

• 5W-30 oil is recommended for general use (synthetic oil is an acceptable alternative).

• The SAE oil viscosity and service classication are in the API label on the oil container.

Use API SERVICE category SJ engine oil, or higher.

SPARK PLUG MAINTENANCE

F6RTC (Torch) Plug Recommended / F6RTP (Platinum) Optional

Using an incorrect spark plug may cause engine damage.

Changing the Spark Plug

The heater box may be hot and must be allowed to cool completely before touching.

Muffler and components inside heat shield may be HOT! Allow to cool before servicing the

spark plug or any area inside and around the heat shield.

1. When engine is cool, remove safety key.

2. Disconnect the spark plug cap and remove any debris from the spark plug area with high pressure air.

3. Remove the spark plug with a 13/16-inch spark plug wrench.

4. Inspect the spark plug. Replace it if the electrodes are worn or if the insulator is cracked or chipped. Spark plug gap should be set

to 0.027 - 0.030 inches.

Servicing Your Engine CONTINUED

Engine Oil Capacities: