Changing The Spark Plugs - Toro 41163 Operator's Manual

Caution
The dust in the clutch will become airborne and
could damage your eyes or you could inhale it
causing breathing difficulties.
Wear safety goggles and a dust mask or other eye
and respiratory protection when performing this
procedure.
5. Lubricate the moving parts in the areas circled in Figure
56 using Toro Dry Lubricant Spray, available through
your Authorized Toro Dealer or Distributor.
Figure 56
6. Install the clutch cover and secure it with the 3 bolts
removed previously.
7. Connect the hose on the front of the tank (Fig. 54).

Changing the Spark Plugs

Change the spark plugs after every 200 operating hours.
Make sure the air gap between the center and side
electrodes is correct before installing the spark plugs. Use a
spark plug wrench for removing and installing the spark
plugs and a gapping tool/feeler gauge to check and adjust
the air gap.
Type: Champion RC-12YC (or equivalent)
Air Gap: 0.030 inch (0.76 mm)
Removing the Spark Plug
1. Set the parking brake, stop the pump, stop the engine,
and remove the ignition key.
2. Release the latch on the back of the seat and lift the seat
forward.
3. Pull the wires off the spark plugs (Fig. 57).
4. Clean around the spark plugs to prevent dirt from
falling into the engine and potentially causing damage.
5. Remove the spark plugs and metal washers.
1. Spark plug wire
Checking the Spark Plugs
1. Look at the center of the spark plugs (Fig. 58).
If you see a light brown or gray coating on the insulator,
the engine is operating properly. A black coating on the
m–6989
insulator usually means the air cleaner is dirty.
Important
replace a spark plug when it has a black coating, worn
electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Fig. 58) and bend the side electrode, if the gap is not
correct.
2
1. Center electrode insulator
2. Side electrode
Installing the Spark Plug
1. Install the spark plugs and metal washers.
2. Tighten the spark plugs to 18 to 22 ft-lb (24.4 to
29.8 N⋅m).
41
Figure 57
2. Spark plug
Do not clean the spark plugs. Always
1
Figure 58
3. Air gap (not to scale)
s
2
1
m–3246
3
0.030 inch
(0.76 mm)
m–3215