G014537
1
Figure 33
1.
Spark plug and wire location
Checking the Spark Plug
1. Look at the center of the spark plug (Figure 34).
If you see light brown or gray on the insulator, the
engine is operating properly. A black coating on the
insulator usually means the air cleaner is dirty.
Important:
Never clean the spark plug. Always
replace the spark plug when it has a black
coating, worn electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Figure 34). Bend the side electrode (Figure 34) if
the gap is not correct.
Figure 34
1.
Center electrode insulator
3.
Air gap (not to scale)
2.
Side electrode
Installing the Spark Plug
1. Install the spark plug. Make sure that the air gap is
set correctly.
2. Tighten the spark plug to 30 ft-lb (41 N-m).
3. Push the wire onto the spark plug (Figure 33).
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.
29
Summary of Contents for SS 3200
Page 46: ...Schematics G014644 Electrical Diagram Rev A 46 ...
Page 47: ...Notes 47 ...
