Wen GN9500 Instruction Manual page 14

GENERATOR PREPARATION
STEP 1 - ADD / CHECK OIL (CONTINUED)
Fig. 7
For subsequent operation, the oil level should be checked
before each use, or after every 8 hours of operation. The
generator is equipped with a low-oil sensor and will not
start without a sufficient amount of oil.
To check oil level (before every subsequent start):
1. Place the generator on a level surface. Make sure the
engine is OFF before adding or checking oil.
Upper Limit
2. Remove and wipe the dipstick with a clean rag.
3. Insert the dipstick into the oil fill without screwing it in.
Remove the dipstick to check the oil mark.
Lower Limit
4. If the oil mark covers less than one half of the dipstick,
slowly add oil until the oil mark reaches the top of the
dipstick (or when you can see the oil coming halfway up
the oil fill threads).
OIL LEVEL SHUTDOWN
To protect the unit from damage, the generator is equipped with a low-oil-pressure shutoff that will automatically
shut down the engine when the oil level is too low. The oil level of the engine should be checked before each start
to ensure that the engine crankcase contains sufficient lubricant.
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