Servicing The Spark Plug - Toro HoverPro 450 Operator's Manual

machine is tipped in another direction, oil
may fill the valve train—requiring at least 30
minutes to drain.
7. Return the machine to the operating position.
8. Clean spilled oil from the machine.
Note:
Dispose of the used oil properly at a local
recycling center.
Adding Oil to the Engine
Oil Capacity: 0.40 L (13.5 oz)
1. Slowly pour the specified engine oil into the
oil-filler neck (Figure
Figure 37
2. Insert the dipstick into the oil-filler neck, then
remove the dipstick.
Important:
Do not thread the dipstick into
the filler neck.
3. Check the oil level on the dipstick
Note:
If you overfill the engine with oil, drain
the excess oil; refer to
(page 20).
35) and wait 3 minutes.
(Figure 38).
Draining the Engine Oil
1. The oil level is at its
maximum.
2. The oil level is too
high—remove oil from
the crankcase.
4. If the oil level is below the upper limit, wipe
the dipstick with a clean rag and repeat steps
1 through
upper limit mark.
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5. Insert the dipstick into the oil-filler neck and
hand tighten the dipstick securely.

Servicing the Spark Plug

Service Interval: Every 100 hours
Spark Plug Specification: Champion RN9YC or
equivalent.
1. Prepare the machine for maintenance; refer to
Preparing for Maintenance (page
2. Clean around the spark plug.
3. Remove the spark plug from the cylinder head.
Important:
dirty spark plug. Do not clean the electrodes
because grit entering the cylinder can
damage the engine.
4. Adjust the air gap
center electrode and side electrode to 0.76 mm
(0.030 inch).
21
Figure 38
3. The oil level is too
low—add oil to the
crankcase.
3 until the engine-oil level is at the
Replace a worn, damaged, or
(Figure 39) between the
g017332
18).