Toro TITAN HD 1500 Series Operator's Manual page 51

Servicing the Spark Plug
Service Interval: Every 200 hours—For Kohler
engines—check the spark plug(s).
Every 500 hours—For Kohler engines—replace
the spark plug(s).
The spark plug is RFI compliant; you can also use
an equivalent plug.
Type: Champion XC12YC
Air Gap: 0.76 mm (0.03 inch)
Removing the Spark Plug
1. Park the machine on a level surface, disengage
the blade-control switch (PTO), and engage the
parking brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Clean the area around the base of the plug to
keep dirt and debris out of the engine.
4. Remove the spark plug
Figure 65
Checking the Spark Plug
Important:
Do not clean the spark plug(s).
Always replace the spark plug(s) when it has a
black coating, worn electrodes, an oily film, or
cracks.
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.
Set the gap to 0.76 mm (0.03 inch).
(Figure 65).
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Installing the Spark Plug
Cleaning the Blower Housing
Every 100 hours/Yearly (whichever comes
first)—For Kohler engines—clean the cooling
fins (more often under dusty, dirty conditions).
To ensure proper cooling, ensure that the grass
screen, cooling fins, and other external surfaces of the
engine are kept clean at all times.
For Kohler engines, remove the blower housing, and
any other cooling shrouds. Clean the cooling fins and
external surfaces as necessary. Make sure that the
cooling shrouds are installed.
Important:
Operating the engine with a blocked
grass screen, dirty or plugged cooling fins, and/or
cooling shrouds removed, will cause engine
damage due to overheating.
51
Figure 66
Figure 67
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