7 - MAINTENANCE INSTRUCTIONS

7 - MAINTENANCE INSTRUCTIONS

7-2. AIR FILTER

CAUTION

NEVER operate blower without the air filter. The air filter must be kept clean. If it becomes damaged, install a new fil- ter.

TO CLEAN AIR FILTER:

1.Loosen knob (A) holding air filter cover in place, remove cover (B) and lift filter (C) from air box (Fig. 7- 2A & Fig. 7-2B).

2.Wash filter in soap and water. DO NOT USE GASO-

LINE!

3.Air dry filter.

4.Reinstall filter.

NOTE: Replace filter if frayed, torn, damaged or unable to be cleaned.

B

A

7-2A

C

7-2B

7-3. FUEL CAP / FUEL FILTER

CAUTION

Remove fuel from unit and store in approved container before starting this procedure. Open fuel cap slowly to release any pressure which may have formed in fuel tank.

FUEL FILTER:

1.Completely remove fuel cap (A) from fuel tank (B) to be able to remove fuel filter (C) from tank. Use a piece of wire (C) with a hook formed at the end to pull filter out of tank. (Fig. 7-3A & 7-3B)

2.Pull filter (D) off with a twisting motion. (Fig. 7-3C)

3.Replace fuel filter (D). (Fig. 7-3C)

NOTE: Never operate the blower without the fuel filter. Internal engine damage could result!

A

7-2A

C

B

7-2B

D

7-2C

7-4. IDLE ADJUSTMENT

The carburetor was pre-set at the factory for optimum per- formance. If further adjustments are necessary take your blower to McCulloch service dealer.

7-5. SPARK PLUG

1.To remove spark plug (B) (Fig. 7-5B) for cleaning or replacement: make sure engine is off, spark plug is cool, then grasp spark plug boot firmly and remove from spark plug. Remove spark plug with correct spark plug tool. Inspect, clean or replace as needed.

2.Spark plug gap = .025" (.635mm) (Fig. 7-5A).

3.Torque to 105 to 130 inch pounds (12 to 15 N•m). Connect spark plug boot.

4.If need replace spark plug with Champion RZ7C or equivalent.

.025" (.635mm)

Spark

Plug

7-5A

B

A

7-5B

7-6. SPARK ARRESTOR SCREEN / COLLAR ASSEMBLY

1.To replace spark arrestor screen/collar assembly (A) (Fig. 7-5B), use a needle nose pliers and pinch an edge of the collar. Pull out the whole spark arrestor screen assembly.

2.Use the needle nose pliers to push in a new spark arrestor screen assembly by opening the pliers slight- ly to press the inner surface of the assembly securely into place

7-7. STORAGE

Failure to follow these steps may cause varnish to form in the carburetor which can cause difficult starting or perma- nent damage following storage.

1.Perform all the general maintenance recommended in the Maintenance Section of your User Manual.

2.Clean exterior of engine and blower tubes.

3.Drain fuel from the fuel tank by running the unit dry or by removing the fuel cap and tipping the motor hous- ing/fuel tank over and draining oil/fuel mixture into a container with the same 2-cycle fuel mixture.

4.After fuel is drained, start engine.

5.Run engine at idle until unit stops. This will purge the carburetor of fuel.

6.Allow engine to cool (approx. 5 minutes).

7.Using a spark plug wrench, remove the spark plug.

8.Pour 1 teaspoon of clean 2-cycle oil into the combustion chamber. Pull starter rope slowly several times to coat internal components. Replace spark plug.

9.Store unit in a cool, dry place away from any source of ignition such as an oil burner, water heater, etc.

7-8. REMOVING A UNIT FROM STORAGE

1.Remove spark plug.

2.Pull starter rope briskly to clear excess oil from com- bustion chamber.

3.Clean and gap spark plug or install a new spark plug with proper gap.

4.Prepare unit for operation.

5.Fill fuel tank with proper fuel / oil mixture. See Fuel and Lubrication Section.

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McCulloch ASB3206 AIR Filter, Fuel CAP / Fuel Filter, Idle Adjustment, Spark Plug, Spark Arrestor Screen / Collar Assembly

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