Cleaning The Blower Housing; Fuel System Maintenance; Replacing The Fuel Filter - Toro 74912 Operator's Manual

Zero-turn-radius riding mower
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1
Figure 43
Installing the Spark Plug
Tighten the spark plug to 18-22 ft-lb (25-29 N-m).
18-22 ft-lb
25-29 N-m
Figure 44

Cleaning the Blower Housing

To ensure proper cooling, make sure the grass screen,
cooling fins, and other external surfaces of the engine
are kept clean at all times.
Annually or every 100 hours of operation (more often
under extremely dusty, dirty conditions), remove the
blower housing and any other cooling shrouds. Clean
the cooling fins and external surfaces as necessary. Make
sure the cooling shrouds are reinstalled. Torque the
blower housing screws to 5.5 ft-lb (7.5 N-m).
Important: Operating the engine with a blocked
grass screen, dirty or plugged cooling fins, and/or
cooling shrouds removed, will cause engine damage
due to overheating.
2
G008794
G010339
Fuel System
Maintenance

Replacing the Fuel Filter

Service Interval: Every 500 hours/Yearly (whichever
comes first) (more often under dusty,
dirty conditions).
1. Disengage the blade control switch (PTO), move the
motion control levers to the neutral lock position,
and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Allow the machine to cool down.
4. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
5. Squeeze the ends of the hose clamps together and
slide them away from the filter (Figure 45).
G008963
1. Fuel filter
2. Hose clamp
6. Remove the filter from the fuel lines.
7. Install a new filter and move the hose clamps close
to the filter (Figure 45).
8. Open the fuel shutoff valve.
Note: It is important to reinstall the fuel line hoses and
secure with plastic ties the same as they were originally
installed at the factory to keep the fuel line away from
components that could cause fuel line damage.
35
1 2
3
Figure 45
3. Fuel line

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