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1. Side electrode
2. Center electrode
2. Use a gapping tool for spark plugs or a feeler gauge to
measure the gap between the side electrode and center
electrode (Figure 56).
3. If the gap is not within the specified range, do the
following:
A. If the gap is too small, carefully bend the side
electrode away from the center electrode until
the gap between the electrodes is 0.7 to 0.8 mm
(0.028 to 0.031 inch).
B. If the gap is too large, carefully bend the side
electrode toward the center electrode until the
gap between the electrodes is 0.7 to 0.8 mm (0.028
to 0.031 inch).
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 spark plug clockwise using a 13/16 inch (21
mm) spark-plug wrench until the plug and sealing
washer are seated (Figure 55).
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 54).
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4
G019300
Figure 56
3. Insulator
4. 0.7 to 0.8 mm (0.028 to
0.031 inch) gap
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
If the engine has been running, the muffler will be
hot.
1. Remove the divider plate; refer to Removing the
Divider Plate (page 28).
Note: Model 68024 does not have a divider plate.
2. Remove the 2 nuts (8 mm) and remove the muffler
from the cylinder (Figure 57).
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2
3
4
5
G019331
1. Deflector (if
applicable)
2. Protector
3. Screw (6 mm)
4. Muffler
3. Remove the 3 screws (4 mm) from the exhaust
deflector and remove the deflector (Figure 57).
4. Remove the screws (5 mm and 6 mm) from the muffler
protector, and remove the muffler protector (Figure
57).
5. Remove the screw (4 mm) from the spark arrester and
remove the spark arrester from the muffler (Figure 57).
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12
8
7
6
Figure 57
5. Exhaust pipe
9. Spark arrester
6. Nut, 8 mm (2)
10. Screws (5 mm)
7. Gasket
11. Exhaust port
8. Bolt (8 mm)
12. Screw (4 mm)
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