Toro Wheel Horse 12-32, Operator'S Manual

Page: 34 / 52

Maintenance
32
Checking the Spark Plug
1. Look at the center of the spark plug(s) (Fig. 19).
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. 19). Bend the side electrode
(Fig. 19) if the gap is not correct.
0.030”
(.762 mm)
2
3
1
Figure 19
1. Center electrode insulator
2. Side electrode
3. Air gap (not to scale)
Installing the Spark Plug
(s)
1. Install the spark plug. Make sure the air gap is
set correctly.
2. Tighten the spark plug(s) to 15 ft–lb (20.4 Nm).
3. Push the wire(s) onto the spark plug (Fig. 18).
Greasing and Lubrication
Service Interval/Specification
Grease the machine after every 50 operating hours or
yearly, whichever occurs first. Grease more frequently
when operating conditions are extremely dusty or
sandy.
Grease Type: General-purpose grease.
How to Grease
1. Disengage the power take off (PTO), set the
parking brake, and turn the ignition key to
“OFF” to stop the engine. Remove the key.
2. Clean the grease fittings with a rag. Make sure to
scrape any paint off the front of the fitting(s).
3. Connect a grease gun to the fitting. Pump grease
into the fittings until grease begins to ooze out of
the bearings.
4. Wipe up any excess grease.
Where to Add Grease
1. Lubricate the front wheels and spindles until
grease begins to ooze out of the bearings
(Fig. 20).
Figure 20