MAINTENANCE
Checking Engine Oil – WH2000i Series
NOTICE
Always maintain proper engine oil level. Failure to
maintain proper engine oil level could result in severe
damage to the engine and/or shorten the life of the
engine.
Always use the specified engine oil. Failure to use the
specified engine oil can cause accelerated wear
and/or shorten the life of the engine.
Engine oil level should be checked before every use.
1. Always operate or maintain the inverter on a flat
surface.
2. Stop engine if running.
3. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
4. Remove the engine service panel to access the oil
fill/drain plug.
5. With a damp rag, clean around the oil fill/drain plug.
6. Remove the oil fill/drain plug (see Figure 35).
Figure 35 – Oil Fill/Drain Plug
NOTICE
Engine oil must always be checked and added when
the inverter is on a flat, level surface, or an inaccurate
reading may result, causing serious engine damage.
7. Check oil level:
When checking the engine oil, remove the oil fill/
drain plug.
• The oil level is acceptable if oil is visible at the
bottom of the threads of the oil fill plug.
• If oil level is low, add to the correct level using
the supplied oil fill bottle. Do not overfill the oil
crankcase.
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Figure 36 – Checking Oil Level
Adding Engine Oil – WH1000i
1. Always operate or maintain the inverter on a flat
surface.
2. Stop engine if running.
3. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
4. Remove the engine service panel to gain access to
the oil fill/drain plug.
5. Thoroughly clean around the oil fill/drain plug.
6. Remove the oil fill/drain plug.
7. Select the proper engine oil as specified in Figure
32.
8. Using the supplied oil fill container, slowly add
engine oil to the engine. Stop frequently to check
the oil level and avoid overfilling (see Figure 37).
Figure 37 – Adding Engine Oil
9. Continue to add oil until the oil is at the correct
level. See Checking Engine Oil – WH1000i on page
33.