Exmark QUEST S Series Operator's Manual page 47

7. Check the oil level; refer to Checking the
Engine Oil Level section.
8. Start the engine and check for leaks.
Servicing the Spark Plug
Service Interval: Every 100 hours/Yearly
(whichever comes first)
Every 200 hours/Every 2
years (whichever comes
first)—Replace the spark
plug (Exmark engine).
Ensure that 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 and a gapping tool or feeler gauge to
check and adjust the air gap. Install a new spark plug
if necessary.
Type: Champion RN9YC or equivalent
Air Gap: 0.030 inch (.76 mm)
Removing the Spark Plug
1. Disengage the PTO and ensure the parking brake
is engaged.
Figure 39
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.
Note: Due to the deep recess around the spark
plug, blowing out the cavity with compressed air
is usually the most effective method for cleaning.
The spark plug is most accessible when the blower
housing is removed for cleaning.
Installing the Spark Plug–Exmark
g027484
Engine
1. Install the spark plug. Make sure that the air gap
is set correctly.
2. Tighten the spark plug to 18.5–22.1 ft-lb (25–30
N-m).
3. Push the wire onto the spark plug.
47
Maintenance
Figure 40
Figure 41
g027478
g027960