Cleaning The Blower Housing; Fuel System Maintenance; Replacing The Fuel Filter - Toro 74840 Operator's Manual

Installing the Spark Plug
Tighten the spark plug(s) to 18-22 ft-lb (25-29 N-m).
15 ft-lb
20 N-m
Figure 42

Cleaning the Blower Housing

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.
Fuel System
Maintenance

Replacing the Fuel Filter

Service Interval: Every 100 hours/Yearly (whichever
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. Raise the seat and locate the fuel filters as shown in
G010476
Figure 43.
1
1. Tee Fitting, vent line
2. Emissions filter
3. Open port
4. Fuel line from tank
5. Squeeze the ends of the hose clamps together and
slide them away from the filter (Figure 44).
37
comes first) (more often under dusty,
dirty conditions).
2
3
Figure 43
5. In-line Fuel filter
6. Flow direction arrow
7. Fuel line to engine
8. Hose clamp
4
5
6
8
7
G015036