Briggs & Stratton 203721GS - Manual (Page 17)

17
Engine Maintenance
Oil
Oil Recommendations
We recommend the use of Briggs & Stratton Warranty
Certified oils for best performance. Other high-quality
detergent oils are acceptable if classified for service SF, SG,
SH, SJ or higher. DO NOT use special additives.
Outdoor temperatures determine the proper oil viscosity for
the engine. Use the chart to select the best viscosity for the
outdoor temperature range expected.
* Below 40°F (4°C) the use of SAE 30 will result in hard starting.
** Above 80°F (27°C) the use of 10W30 may cause increased oil
consumption. Check oil level more frequently.
NOTE: Synthetic oil meeting ILSAC GF-2, API
certification mark and API service symbol with
“SJ / CF ENERGY CONSERVING” or higher, is an
acceptable oil at all temperatures. Use of synthetic
oil does not alter required oil change intervals.
Checking Engine Oil Level
Oil level should be checked prior to each use or at least
every 8 hours of operation. Keep oil level maintained.
1. Place unit on a flat, level surface.
2. Clean area around oil fill and remove oil fill cap.
3. Verify oil is at the point of overflowing at oil fill opening.
4. Replace and tighten oil fill cap.
Adding Engine Oil
1. Place unit on a flat, level surface.
2. Check oil level as described in Checking Engine Oil
Level.
3. If needed, slowly pour oil into oil fill opening to the
point of overflowing at oil fill.
4. Replace and tighten oil fill cap.
Changing Engine Oil
Change the oil after the first 5 hours of operation. Change oil
every 50 hours thereafter. If you are using your air
compressor under extremely dirty or dusty conditions, or in
extremely hot weather, change the oil more often.
KEEP OUT OF REACH OF CHILDREN. DON’T
POLLUTE. CONSERVE RESOURCES. RETURN
USED OIL TO COLLECTION CENTERS.
Change the oil while the engine is still warm from running,
as follows:
1. Place unit on a flat, level surface.
2. Disconnect the spark plug wire from the spark plug and
place the wire where it cannot contact spark plug.
3. Clean area around oil drain plug (A). The oil drain plug is
located at base of engine, opposite carburetor.
4. Remove oil drain plug and drain oil completely into a
suitable container.
5. Reinstall oil drain plug and tighten securely. Remove oil
fill cap.
6. Slowly pour oil (about 20 oz.) into oil fill opening (B) to
the point of overflowing (C) at oil fill cap. DO NOT
overfill.
7. Reinstall oil fill cap. Finger tighten cap securely.
8. Wipe up any spilled oil.
CAUTION
Avoid prolonged or repeated skin contact with used motor
oil.
• Used motor oil has been shown to cause skin cancer in certain
laboratory animals.
• Thoroughly wash exposed areas with soap and water.
WARNING
Unintentional sparking can result in fire or
electric shock.
WHEN ADJUSTING OR MAKING REPAIRS TO YOUR AIR
COMPRESSOR
• Disconnect the spark plug wire from the spark plug and place
the wire where it cannot contact spark plug.
WHEN TESTING FOR ENGINE SPARK
• Use approved spark plug tester.
• DO NOT check for spark with spark plug removed.
A
B C