Polaris ACE 900 2017 Service Manual page 74

MAINTENANCE
8. Measure gap with
specifications in picture below for proper spark plug
type and gap. Adjust gap if necessary by bending the
side electrode carefully.
Spark Plug Gap:
.035–.039 in. (0.8–1.0 mm)
9. If necessary, replace spark plugs with proper type.
CAUTION
Severe engine damage may occur if the incorrect spark
plug is used.
Recommended Spark Plug:
NGK MR7F
10. Install spark plugs and torque to specification.
TORQUE
Spark Plug:
9 ft-lbs (12 Nm)
11. Install the plug caps to the appropriate cylinder by
referencing the MAG and PTO spark plug wire decals
(B). Ensure wires are pushed down all the way so
they engage onto the spark plugs.
12. Reinstall the (-) negative battery cable and the
driver's seat.
2.50
a wire gauge. Refer to
9929422 R02 - 2017-2019 ACE 900 Service Manual
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