34
Removing the Spark Plug(s)
1. Disengage the power take off (PTO) and turn the
ignition key to “OFF” to stop the engine. Move levers
to neutral locked position and apply parking brake.
Remove the key.
2. Pull the wire(s) off the spark plug(s) (Fig. 29). Now
clean around the spark plug(s) to prevent dirt from
falling into the engine and potentially causing damage.
3. Remove the spark plug(s) and metal washer.
1
2
m–4811
Figure 29
1. Spark plug wire 2. Spark plug
Checking the Spark Plug
1. Look at the center of the spark plug(s) (Fig. 30). 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(s). Always
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
(Fig. 30). Bend the side electrode (Fig. 30) if the gap is
not correct.
0.030 in.
(0.76 mm)
2
3
1
m–3215
Figure 30
1. Center electrode insulator
2. Side electrode
3. Air gap (not to scale)
Installing the Spark Plug(s)
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) (Fig. 29).
Electronic Fuel Injection
System
This machine contains an electronic fuel injection system.
It controls the fuel flow under different operating
conditions.
Malfunction Indicator Light
If the malfunction indicator light (MIL) illuminates the
electronic control unit (ECU) has detected a problem or
fault in the electronic fuel injection (EFI) system.
Once the MIL illuminates, initial trouble shooting checks
should be made. Refer to Troubleshooting on page 53
under the MIL section.
If these checks do not correct the problem, further
diagnosis and servicing by an Authorized Service Dealer
is necessary.
To Next Page
Loading...
