Maintenance
29
3. Remove the filler caps from the battery and
connect a 3 to 4 amp battery charger to the
battery posts. Charge the battery at a rate of 4
amperes or less for 4 hours (12 volts). Do not
overcharge the battery. Install the filler caps after
the battery is fully charged.
POTENTIAL HAZARD
• Charging the battery produces gasses.
WHAT CAN HAPPEN
• Battery gasses can explode.
HOW TO AVOID THE HAZARD
• Keep cigarettes, sparks and flames away
from battery.
4. Install the battery in the chassis; refer to
Installing the Battery, page 27.
Spark Plug
Service Interval/Specification
Install a new spark plug after every 100 operating
hours. Check the spark plug after every 25 operating
hours. Make sure the air gap between the center and
side electrodes is correct before installing the spark
plug. Use a spark plug wrench for removing and
installing the spark plug and a gapping tool/feeler
gauge to check and adjust the air gap.
Type: Champion RC12YC (or equivalent)
Air Gap: 0.030” (0.762 mm).
Removing the Spark Plug
1. Disengage the blade control (PTO), set the
parking brake, and turn the ignition key to
“OFF” to stop the engine.
2. Open the hood.
3. Pull the wire off the spark plug (Fig. 24). Now
clean around the spark plug to prevent dirt from
falling into the engine and potentially causing
damage.
4. Remove the spark plug and metal washer.
1
m–1798
Figure 24
1. Spark plug wire
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