Servicing The Electronic Fuel Injection System; Servicing The Fuel Filters - Toro Z286E Operator's Manual

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 Premium Gold 2071 (or equivalent) Air
Gap: 0.030 in. (0.76 mm)
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) (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.
2
Figure 29
1. Spark plug wire
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.
(s)
1
m–4811
2. Spark plug
33
2
1
Figure 30
1. Center electrode insulator
2. Side electrode
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) (Fig. 29).
Servicing the Electronic Fuel
Injection System
This machine contains an electronic fuel injection system.
It controls the fuel flow under different operating
conditions.
Checking the Malfunction Indicator Light
If the malfunction indicator light (MIL) illuminates,
during operation, 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.

Servicing the Fuel Filters

Important
Removal of hose clamps requires special
pliers. Contact an Authorized Kohler Service Dealer for
ordering pliers.
Replacing the Low Pressure Fuel Filter
Replace the low pressure fuel filter after every 200
operating hours or yearly, whichever occurs first.
3
0.030 in.
(0.76 mm)
m–3215
3. Air gap (not to scale)
(s)