Saab 1987 900 Owner's Manual page 61

avoid damage to the threads in the alumi-
num cylinder head. The firing order is 1-3-
4-2 (cylinder number 1 is closest to the fire-
wall).
Windshield wipers
Inspect and clean the rubber blades of the
windshield at regular intervals. Methyl al-
cohol is recommended for cleaning. If the
blades show signs of wear, they should be
replaced. 400 mm. (16 in.) blades are
specified.
Changing the windshield wiper blades
Lift the wiper arm. Depress the plastic clip
(1) and remove the complete wiper blade
(2) (see illustration).
Free the rubber from the retainer (see illust-
ration) by pressing together the two shiny
metal pieces and twisting the rubber. The
rubber can now be withdrawn through the
Car care and scheduled maintenance 59
other retainers. To fit the rubber, slide it
through the four retainers and then tighten
it so that the retainer at one end engages the
recess in the blade rubber.
Replacement blades are also available as a
complete insert.
Washers
The reservoir holds 6.5 U.S. quarts. Fill up
with suitable anti-freeze washer fluid .
Plain water will freeze in the winter. The
spray nozzles consist of rotatable balls. To
adjust the direction ofthe jet, insert a needle
in the hole ofthe nozzle.
Headlights, bulbs, fuses
Headlights
Adjustment of the headlights is made by
means of two knobs at the back of each
headlight unit, accessible from the engine
compartment. The higher knob is for verti-
cal adjustment and the lower one for lateral
adjustment.
It
is extremely important that the head-
lights be correctly adjusted to achieve the
best possible lighting effect without any
risk of blinding oncoming drivers. All ad-
justments should be done by an authorized
Saab dealer, according to specifications
and/or applicable state laws. Special head-
light aiming equipment is required to do
the job properly.
Headlight
1 Bulb holder
2 Headlight adjustment knobs