Servicing The Spark Arrester - Toro CM Series Operator's Manual

Checking the Spark Plug
Important: Do not clean the spark plug. Always replace
the spark plug when it has: a black coating, worn
electrodes, and oily film, or cracks.
Note: If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the insulator
usually means that the air cleaner is dirty.
Set the gap to 0.7 to 0.8 mm (0.028 to 0.031 inch).
A
Figure 49
Installing the Spark Plug
Important: Ensure that the gap between the side and
center electrodes is correct before installing the spark
plug.
1. Thread the spark plug clockwise into the spark-plug
hole by hand.
Note: Avoid cross-threading the spark plug with the
threads of the spark-plug hole.
2. Rotate the spark plug clockwise using a 21 mm (13/16
inch) spark-plug wrench until the plug and sealing
washer are seated (Figure
3. Tighten the spark plug as follows:
•
When installing an in-service spark plug, tighten
the plug an additional 1/8 to 1/4 turn.
•
When installing a new spark plug, tighten the plug
an additional 1/2 turn.
4. Push the spark-plug wire onto the terminal of the spark
plug (Figure 47).
B
g027479
48).

Servicing the Spark Arrester

Cleaning the Spark Arrester
Service Interval: Every 100 hours
Note: A spark arrester is available as an option. If you
require a spark arrester, contact your Authorized Toro Service
Dealer.
Genuine Toro spark arresters are approved by the USDA
Forestry Service.
WARNING
Contact with hot surfaces may cause personal
injury.
Keep hands, feet, face, clothing and other body
parts away the muffler and other hot surfaces.
1. Remove the divider plate; refer to
Divider Plate (page
2. Remove the 2 nuts (8 mm) and remove the muffler
from the cylinder
1
2
3
4
5
G019331
1. Deflector (if 5. Exhaust pipe
applicable)
2. Protector 6. Nut (8 mm)
3. Screw (6 mm) 7. Gasket
4. Muffler 8. Bolt (8 mm)
3. Remove the 3 screws (4 mm) from the exhaust
deflector and remove the deflector
4. Remove the screws (5 mm and 6 mm) from the muffler
protector, and remove the muffler protector
50).
5. Remove the screw (4 mm) from the spark arrester and
remove the spark arrester from the muffler
34
Removing the
29).
(Figure 50).
10
12
8
7
6
Figure 50
9. Spark arrester
10. Screws (5 mm)
11. Exhaust port
12. Screw (4 mm)
(Figure 50).
(Figure
11
10
9
(Figure
50).