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MAINTENANCE
5.
Install a new filter and move the hose clamps
close to the filter (Figure 12).
6.
Wipe up any spilled fuel.
Open fuel shut-off valve on console.
Servicing the Spark Plug
Check the spark plug(s) after every 200 operating
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: Champion RC12YC (or equivalent).
Air Gap: 0.030 in. (0.76mm).
Removing the Spark Plug
1.
Disengage the power take off (PTO) and turn the
ignition key to off. Move levers to neutral locked
position and apply parking brake. Remove the
key.
2.
Pull the wire(s) off the spark plug(s) (Figure 13).
Now clean around the spark plug(s) to prevent dirt
from falling into the engine and potentially causing
damage.
Figure 13
(1) Spark Plug Wire
2 - 10
(s)
m-3218
(2) Spark Plug
3.
Remove the spark plug(s) and metal washer.
Checking the Spark Plug
1.
Look at the center of the spark plug(s) (Figure 14).
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.
Figure 14
Never clean the spark plug(s). Always
Important
replace the spark plug(s) when it has: a black coating,
worn electrodes, an oily film, or cracks.
2.
Check the gap between the center and side
electrodes (Figure 14). Bend the side electrode
(Figure 14) if the gap is not correct.
Installing the Spark Plug
1.
Install the spark plug(s). Make sure the air gap is
set correctly.
2.
Tighten the spark plug(s) to 20 ft-lb (27 N·m).
3.
Push the wire(s) onto the spark plug(s) (Figure
13).
Check Valve Clearance
Refer to the engine manufacturer's service manual for
service interval and instructions.
1101-020
(s)
Mid-Mount Z Service Manual
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