Chery QQ3, User Manual

Page: 158 / 184

Service and Maintenance
149
Clean carbon deposit on spark plug. Use
brush to clean electrode, then raze carbon
on insulation with small fill. Then blow
using compressed air. Upper insulation
must be cleaned. Adjust spark plug
clearance (standard clearance is 0.7
mm-0.9 mm).
Service Interval
Every3,0000 kmor18 months, replace.
Replacing Spark Plug
-Clean dust on spark plug seat.
-Remove high tension wire, then remove
spark plug using spark plug wrench.
-Install new or cleaned spark plug using
hand force, rotate spark plug clockwise
for several turns. If spark plug cannot
be smoothly rotated, remove it and try
again. Ensure prop er engage between
plug thread and cylinder head thread.
-Tighten spark plug to specified torque
using plug wrench (standard torque: 25 N.
m).
Connect high-tension wire using right
sequence.
！
Notice
If engine spark plugs are installed
improperly or plugs of wrong brand are
installed, stumble engine operating may
be caused, and even engine components
may be damaged. To prevent engine or
other components damaging, follow
below items:
8.
Spark plug must be tightened to
specified torque. Spark plug cannot
be over tightened, otherwise
cylinder body threads may be
damaged;
9. Align plug with hole when removing
or tightening.
10. When install spark plug, tighten
using hand force first.
11. Pull the sleeve when install spark
wiring, do not pull spark plug.
12. Do no use spark plug of other brand.
13. Do not foul spark plug hole.
14. Use cares to avoid accidental
burning when remove spark plug
while engine is at high temperature.
Drive Belt
Install belt properly and ensure
appropriate belt tension, otherwise
generator, A/C and other system
operating may be affected. If drive belt is
worn, cracked or swelled, replace it.
Check belt tension: apply appropriate
thumb pressure at the middle and
measure if belt displacement is about
10mm.If belt is too loose, adjust and
repair at nearest CSSS.
！
Notice
DO NOT run engine when checking belt,
otherwise moving parts will be pressed,
broken and twisted.