Replacing The Spark Plug; Replacing The Rotor Blades - Toro CCR POWERLITE 38170 Operator's Manual

9. Install the drive belt cover and tighten the fasteners
securely, but do not overtighten.

Replacing the Spark Plug

Before each season, check the spark plug. If the electrodes
in the center of the plug are dark or have deteriorated,
install a new NGK BPMR4A spark plug.
1. Remove the two screws that secure the control panel to
the housing (Fig. 12).
Figure 12
1. Control panel
2. Remove the ignition key and lift off the panel,
allowing it to hang on the recoil rope.
3. Pull the wire off the spark plug and remove the spark
plug (Fig. 13).
Figure 13
1. Spark plug wire
4. Examine the spark plug and replace it if it is cracked,
fouled, or dirty.
IMPORTANT: Do not sandblast, scrape, or the clean
spark plug. Dirt may fall into the cylinder and cause
engine damage.
5. Set the gap between the electrodes at .030 in.
(.76 mm). Install the plug and tighten to 15 ft-lb
.
(20.4 N m). If you do not have a torque wrench,
tighten the plug firmly.
917
2. Screws
6. Push the wire onto the spark plug.
7. Install the control panel with the screws.

Replacing the Rotor Blades

Before each season, inspect the rotor blades for wear.
When a rotor blade edge has worn to the wear indicator
hole (Fig. 14), replace both rotor blades to ensure proper
performance and to prevent damage to the underside of
the snowthrower.
1. Wear indicator hole
Note: Replace the scraper whenever you replace the rotor
blades. This ensures proper snowthrower operation and
performance.
Note: The running time and the roughness of the driveway
or the sidewalk determines the wear rate of the rotor
blades.
Removing the Old Blade
Note:
You will need a T27 torx driver to complete this
procedure.
1. Remove four torx screws, two caps screws, and six
locknuts that secure the blade to the rotor shaft
assembly.
2. Slide the blade out from between the blade supports
(Fig. 15).
Installing a New Blade
1. Examine a new rotor blade edge for the difference in
layer thickness (Fig. 15). Some rotor blades have a
part number on the thick side of the blade.
12
.030 in.
(.76 mm)
1
Figure 14