Generac Power Systems RG10090 Owner's Manual page 32

Maintenance
Inspecting Coolant Level and Hoses
WARNING
Risk of burns. Allow engine to cool before
draining oil or coolant. Failure to do so could
result in death or serious injury.
Proceed as follows to inspect the coolant level and
hoses:
1. See Figure 5-4. Verify coolant level is between
HOT and COLD marks on the overflow reservoir.
Figure 5-4.
Figure 5-4. Coolant Overflow Reservoir
NOTE: Coolant expands when hot, so coolant level
may be higher than the HOT mark. Do not add
coolant higher than the HOT mark.
2. If coolant level is below the COLD mark, remove fill
cap from overflow reservoir and add coolant. See
Coolant Water Treatment.
3. Inspect coolant hoses for leaks. Tighten hose
clamps, if necessary.
4. Inspect hoses for nicks, cuts, tears, or general de-
terioration. Replace as necessary.
Inspecting Radiator for Clogging
Proceed as follows to check radiator for clogging:
1. Use a flashlight to inspect the radiator fins.
2. Inspect for debris, accumulations of dirt, or other
deposits.
3. Carefully remove any debris from radiator fins. Use
warm soapy water and a soft bristled brush to re-
move dirt and other deposits, if necessary.
Checking Lubricating Oil Level and Drain Hose
NOTE: If changing engine lubricating oil and filter, see
Replacing Lubricating Oil and Oil
Proceed as follows to check oil level and oil drain hose:
1. If engine was running, wait at least 10 minutes to
verify oil has fully drained into oil pan.
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Filter.
NOTE: The most accurate oil level readings are ob-
tained when engine is cold.
2. See Figure 5-1. Remove oil dipstick (F) and wipe
dry with a clean, lint free cloth.
3. Slowly insert oil dipstick into oil dipstick tube.
4. Verify oil dipstick is fully seated in oil dipstick tube.
NOTE: Some oil dipsticks require more effort to
fully seat than others.
5. Allow at least 10 seconds to elapse.
6. See Figure 5-5. Slowly remove oil dipstick (A).
Figure 5-5.
Figure 5-5. Oil Dipstick Location
7. See Figure 5-6. Verify oil level is at or near FULL
mark (B). Add oil as necessary.
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