6. Replace the air filter in the air filter/muffler cover(Fig. 22)
NOTE: Operating the unit without the air filter and air filter/muffler cover assembly will void the
warranty.
Reinstalling the Air Filter /muffler Cover
1. Place the air filter/muffler cover over the back of the carburetor and muffler.
NOTE: The choke lever must be in position B (Fig. 21) to install the air filter/muffler cover.
2. Insert the four (4) screws into holes in the air filter/muffler cover (Fig. 210 and tighten. Use a flat
blade or T-20 TORX bit screwdriver. Do not over tighten. Do not force.
REPLACING THE SPARK PLUG
Use a Torch BM6A spark plug (Or equipment), the correct air gap is 0.5mm (0.02 in.) . Remove the pug
after every 50 hours of operation a check its condition.
1. Stop the engine and allow it to cool. Grasp the plug wire firmly and pull the cap from the spark
plug.
2. Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning
a 5/8 in. socket counterclockwise.
3. Replace cracked. Fouled or dirty spark plug. Set the air gap at 0.5mm (0.02. in.) using a feeler
gauge (Fig. 26)
4. Install a correctly gapped spark plug in the cylinder head. Tighten by turning the 5/8in. socket
clockwise until snug.
If using a torque wrench. Torque to: 12.3-13.5 N.M (110-120 in.lb), Do not over tighten.
Fig 26
CLEANING AND STORAGE
CLEANIG THE UNIT
Use a small brush to clean off the outside of the unit and to keep the air vents free of obstructions.
CLEANING THE VACUUM BAG
1. Empty the bag after each use to avoid deterioration and obstructing air flow, which will reduce
the performance of the vacuum.
2. Wearing eye protection and a dust mask. Clean the bag as needed. Turn the bag inside out after
P-17