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MAINTENANCE
2.13
SPARK PLUG INSPECTION
Spark Plug Removal and Replacement
1. Turn the fuel valve to OFF.
2. Remove the front cab.
3. Move the fuel valve hose clamp (1) forward and
gently remove the hose from the fuel valve fitting
on the gas tank.
1
2
3
4. Remove the vent hose (2) from the instrument
panel, taking note of the hose routing for
reinstallation.
5. Remove the tank mounting bolt (3) at the rear of
the gas tank.
6. Move the tank rearward and upward over the
engine. Slowly remove the tank, being careful not
to catch any hoses, wires or other components.
Place the tank on a stable surface or work bench
to protect the valve from contamination or
damage.
7. Remove spark plug high tension lead. Clean plug
area so no dirt and debris can fall into engine
when plug is removed.
8. Remove spark plug. and inspect electrodes for
wear and carbon buildup. The insulator tip should
be a light tan color, indicating good combustion.
Look for a sharp outer electrode edge with no
rounding or erosion.
9. If needed, clean spark plug with electrical contact
cleaner or a glass bead spark plug cleaner only.
CAUTION: Wire brushes or coated abrasives
should not be used.
10. Measure gap with a wire gauge. Refer to
specifications for proper spark plug type and gap.
Adjust gap if necessary by bending the side
electrode carefully.
11. If necessary, replace spark plug with proper type.
CAUTION: Severe engine damage may occur if
the incorrect spark plug is used.
12. Apply a small amount of anti-seize compound to
the spark plug threads.
13. Install spark plug and torque to specification.
Reverse steps as needed for reassembly.
Recommended Spark Plug:
NGK DCPR8E
Spark Plug Torque:
14 Ft. Lbs. (19 Nm)
.035s (0.9 mm)
Spark Plug Gap
IGNITION TIMING
Refer to Chapter 10 for ignition timing checks.
BATTERY MAINTENANCE
WARNING
Battery electrolyte is poisonous. It contains
sulfuric acid. Serious burns can result from con-
tact with skin, eyes or clothing. Antidote:
External: Flush with water.
Internal: Drink large quantities of water or milk.
Follow with milk of magnesia, beaten egg, or
vegetable oil. Call physician immediately.
Eyes: Flush with water for 15 minutes and get
prompt medical attention.
Batteries produce explosive gases. Keep
sparks, flame, cigarettes, etc. away. Ventilate
when charging or using in an enclosed space.
Always shield eyes when working near batter-
ies. KEEP OUT OF REACH OF CHILDREN.
The battery is located under the left rear fender.
NOTE: All Predator ATV batteries are
Maintenance-- Free design and construction.
Before placing the battery into service, check the
battery condition and charge accordingly. Use
of
Conventional Lead--Acid batteries is
not
recommended.
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