Subaru 2008 IMPREZA - Manual (Page 310)

11-18
Maintenance and service
Spark plugs
It may be difficult to replace the spark
plugs. It is recommended that you have
the spark plugs replaced by your
SUBARU dealer.
The spark plugs should be replaced
according to the maintenance schedule
in the
“Warranty and Maintenance Book-
let ”.
CAUTION
. When disconnecting the spark
plug cables, always grasp the
spark plug cap, not the cables.
. Make sure the cables are re-
placed in the correct order.
& Recommended spark plugs
Non-turbo models:
FR5AP-11 (NGK)
Turbo models:
SILFR6A (NGK)
Drive belts
1) Power steering pump pulley
2) Front side belt
3) Alternator
4) Air conditioner compressor pulley
5) Rear side belt
6) Crank pulley
A) 98 N (10 kgf, 22 lbf)
The alternator, power steering pump, and
air conditioner compressor depend on
drive belts. Satisfactory performance re-
quires that belt tension be correct.
To check the tension of the front side belt,
place a straightedge (ruler) across two
adjacent pulleys (alternator and crank
pulley) and apply a force of 22 lbs (98 N,
10 kg) midway between the pulleys by