Saab 1987 900 Owner's Manual page 75

Emission systems maintenance program
A. Emission system maintenance
Valve clearance - Check; if necessary
adjust to specification (cold engine). Wash and blow
clean the oil separator in camshaft cover.
(8 valve engines only) ........................................... ... ...... .
x
Engine head bolts and manifolds - Torque to X
specifications (including Turbocharger attachment
bolts - Turbo) ..................................... ...... .. ..... .. ..... ...... .
Spark plugs - Replace and adjust gap to
specification (NOTE: See footnote
1,
below)
Air cleaner insert - Replace ............... .................. ...... ..
Fuel filter - Replace ........ .. .............................. .... ........ . .
Car care and scheduled maintenance 73
Where "miles" or "months" are shown, perform at
whichever limit is reached first.
Int. Oil&-
FilterChg.
(Every 3,750
Mi. or 6 Mos.)
X-Every 30,000
miles.
X- Every 30,000
miles.
(1)
X-Every 30,000
miles.
X-Every 30,000
miles.
1.
Under severe service conditions (including extensive idling, stop-and-go driving, towing, high speed driving, andJor driving in cold climates over repeated short trips
without a sufficient engine warm-up), checking the spark plugs and regapping or replacing, as necessary, is recommended every 15,000 miles.
2. These columns refer to provisions of the California Emission Control System Warranty and apply only to residents of California.