32
SPARK PLUG INSPECTION
Recommended spark plugs:
NGK-CR7HSA, BOSCH-UR4AC,
Champion-P-RZ9HC (Federal Mogul)
•
C any lean dirt around the spark plug base.
For most riding conditions this spark plug heat
range number is satisfactory. However, if the
vehicle is going to be operated for extended
periods at high speeds or near maximum
power in hot climates, the spark plug should
be changed to a cold heat range number,
consult Authorised Hero MotoCorp workshop
on this if required.
•
D noise suppressor (1) isconnect the cap
and remove the spark plug with the (2) help
of spark plug box wrench provided in the
tool bag.
•
M ake sure that the spark plug gap is
0.6-0.7 mm using a wire-type feeler
gauge. If adjustment is necessary, bend the
side electrode carefully Make sure the plug .
washer is in good conditions.
•
Tighten with a new spark plug 1/2 turn
spark plug wrench to compress the washer.
If you are reusing a plug, it should take only
1/8-1/4 turn after the plug seats.
Use hero genuine engine oil or recommended
grade oil.
GRADE: SAE 10W 30 SL Grade
(JASO MA2).
Manufactured by:
•
Tide Water Oil Co. (India) Ltd.
•
With the plug washer attached, thread the
spark plug in by hand to prevent cross-
threading.
ENGINE OIL
BRAND: Hero 4T plus
there is apparent wear or if the insulator is
cracked or chipped.
•
Visually inspect the spark plug electrodes for
wear. The center electrode should have
square edges and the side electrode should
not be eroded. Discard the spark plug if
(2) Spark plug(1) Noise suppressor cap
1
2
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