g015238
G012845
3/4
2
3
4
5
6
1
Figure 47
Note:
Ensure the oil filter gasket touches the engine
and then an extra 3/4 turn is completed.
4. Fill the crankcase with the proper type of new oil;
refer to Changing the Oil.
Servicing the Spark Plug
Service Interval:
Every 100 hours
Make sure the air gap between the center and side
electrodes is correct before installing the spark plug.
Use a spark plug wrench for removing and installing
the spark plug(s) and a gapping tool/feeler gauge to
check and adjust the air gap. Install a new spark plug(s)
if necessary.
Type for all Engines:
NGK
®
BPR4ES or equivalent
Air Gap:
0.030 inch (0.75 mm)
Removing the Spark Plug
1. Disengage the PTO, move the motion control levers
to the neutral locked 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.
g015238
Figure 48
Checking the Spark Plug
Important:
Never clean the spark plug(s). Always
replace the spark plug(s) when it has: a black
coating, worn electrodes, an oily film, or cracks.
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.
Set the gap to 0.030 inches (0.75 mm).
G008794
1
2
Figure 49
36
