Ryobi 2079r - Manual (Page 18)

MAINTENANCE AND REPAIR INSTRUCTIONS
18
REPLACING THE SPARK PLUG
Use a Champion RCJ6Y spark plug (or equivalent). The
correct air gap is 0.025 in. (0.655 mm.). Remove the plug
after every 50 hours of operation to 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.
Note: Replace cracked, fouled or dirty spark plug.
3. Set the air gap at 0.025 in. (0.655 mm.) using a
feeler gauge (Fig. 24).
CAUTION: Do not sand blast, scrape, or
clean electrodes. Grit in the engine could
damage the cylinder.
0.025 in.
(0.655 mm.)
Fig. 24
ACCESSORIES/REPLACEMENT PARTS
2-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147543
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181765
Replacement Line . . . . . . . . . . . . . . . . . . . . . . . 612454
Replacement Line Cartridge . . . . . . . . . . . . . . . 147345
Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . 610636
Bump Head Knob Assembly . . . . . . . . . . . . . . . 180814
Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180000
The 2079r trimmer is convertible to a brushcutter with
the optional Brush Blade Kit. The kit contains all the
necessary parts to safely convert the trimmer to
brushcutter capability.
NOTE: A Brush Blade Kit, Part # 300026 can be
purchased from your local authorized dealer.
4. Install a correctly gaped spark plug in the cylinder
head. Tighten by turning the 5/8 in. socket clockwise
until snug.
If using a torque wrench torque to;
110-120 in.•lb. (12.3-13.5 N•m).
Do not over tighten.