Table of Contents
Advertisement
Maintenance
Air Gap: 0.030 inch (.76 mm)
1.
Disengage the PTO and ensure the parking brake
is engaged.
2.
Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3.
Disconnect the wire from the spark plug.
4.
Clean around the spark plug to prevent dirt from
falling into the engine and potentially causing
damage.
5.
Remove the spark plug and metal washer.
Installing the Spark Plug
1.
Install the spark plug. Make sure that the air gap
is set correctly.
2.
Tighten the spark plug to 16 ft-lb (22 N-m).
3.
Push the wire onto the spark plug.
Figure 45
Figure 46
Checking the Spark Plug
1.
Inspect the spark plug
Note: 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: Do Not clean the spark plug.
Always replace the spark plug when it has a
black coating, worn electrodes, an oily film,
or cracks.
g027478
2.
Check the gap between the center and side
electrodes.
3.
Set the gap to 0.030 inch (.76 mm).
Cleaning the Blower Housing
Service Interval: Every 100 hours/Yearly
To ensure proper cooling, make sure the grass screen,
cooling fins, and other external surfaces of the engine
are kept clean at all times.
1.
Remove the blower housing and any other cooling
shrouds.
2.
Clean the cooling fins and external surfaces as
necessary.
3.
Make sure the cooling shrouds are reinstalled
Important: Operating the engine with a blocked
grass screen, dirty or plugged cooling fins,
and/or cooling shrouds removed, will cause
g027735
engine damage due to overheating.
48
Figure 47
(whichever comes first)
More often under dirty
conditions.
g027479
Advertisement
Table of Contents
