Zero Turn Riding Mower Operator's Manual

English-38
MAINTENANCE
9. Connect BLACK grounding cable to
negative (-) battery terminal with
remaining hex bolt and hex nut.
10. Tighten securely.
11. Close terminal access doors.
12. Lower seat.
Ignition System
The engine is equipped with an electronic
ignition system. Only the spark plugs require
maintenance.
For recommended spark plugs, see Technical
Data.
1. Remove the ignition cable boot and
clean around the spark plug.
2. Remove the spark plug with a spark plug
socket wrench.
3. Check the spark plug. Replace the spark
plug if fouled, the electrodes are burned
and if the insulation is cracked or
damaged. Clean the spark plug with a
steel brush if it is to be reused.
4. Measure the electrode gap with a
gapping tool. The gap should be .030”
(0.75 mm). Adjust as necessary by
bending the side electrode.
5. Reinsert the spark plug, turning by hand
to avoid damaging the threads.
6. After the spark plug is seated, tighten it
using a spark plug wrench so that the
washer is compressed. A used spark
plug should be turned 1/8 of a turn from
the seated position. A new spark plug
should be turned 1/4 a turn from the
seated position.
7. Replace the ignition cable.
IMPORTANT INFORMATION
Fitting the wrong spark plug type can
damage the engine.
Inadequately tightened spark plugs can
cause overheating and damage the
engine. Tightening the spark plugs too
hard can damage the threads in the
cylinder head.
8011-054
Measure the electrode gap