Spark Arrester Screen - Toro AC-1 Service Manual

b
4. If the clearance is not within specification, adjust as
follows:
a. Turn the adjusting nut (Figure 1-18), using a
5/16 in (8 mm) wrench or nut driver.
To increase the rocker arm to valve clearance, turn
the adjusting nut counterclockwise.
To decrease the rocker arm to valve clearance, turn
the adjusting nut clockwise.
b. Recheck the clearance with a flatfeeler gauge
and readjust as necessary (see Figure 1-1
7).
5. Reinstall the rocker arm cover, using a new gasket.
Torque the rocker arm cover screw to
20-30 in-lb
(2.2-3.4 N.m).
Figure 1-18. Adjusting Nuts.
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6. Install the breather hose to the air filter base.
7. Reinstall the engine cover and screws. Refer to
Part 5
-
Engine Reassembly.
Torque the top screws to 15-20 in-lb (1.7-2.2 Nom).
Torque the front screw to 20-25 in-lb (2.2-2.8 Nom).
Torque the rear screw with washer to 30-35 in-lb (3.5-
4.0 Nom).
Spark Arrester Screen
This unit is equipped with a spark arrester screen.
Every 50 hours of operation, check the spark arrester
screen for debris and/or deposits.
WARNING: Hot Surfaces!
Make sure the muffler is cool before checking the
spark arrester screen to prevent injury.
1. Remove the spark arrester cover screw and cover
(Figure 1-1
9).
Figure 1-1 9. Spark Arrester Screen.
3.6051.019
2. Push the spark arrester screen out of the cover.
3.
Inspect the spark arrester screen.
If the screen is clean, reinstall the screen,
cover and screw. If the screen is plugged,
replace it.
4. Torque the screw to 15-20 in-lb (1.7-2.2 N-m).
1-16