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Wen PW3400 - Page 12

Wen PW3400
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10W30 OIL
ADD ENGINE OIL
The pressure washer is shipped without oil. User
must add the proper amount of oil before operat-
ing the pressure washer for the first time. The
oil capacity of the engine crankcase is 20.3 fl. oz.
(600 mL). For general use (above 40° F), we rec-
ommend 30W, 4-stroke engine oil.
ENGINE OIL RECOMMENDATIONS
Select good quality detergent oil bearing the American Petroleum Institute (API) service classifications SJ, SL, or
SM. (Synthetic oils may be used.) Use the SAE viscosity grade of oil from the above chart that matches the starting
temperature anticipated before the next oil change.
To add oil, follow these steps: (Fig. 6A & 6B)
1. Make sure the pressure washer is on a level surface. Tilting the
pressure washer to assist in filling will cause oil to flow into the
wrong areas of the engine and will cause damage. Keep pressure
washer level.
2. Remove the dipstick (Fig. 6A - 1) from the engine.
3. Add oil slowly to bring level to full. Make sure oil comes approxi-
mately halfway up the crankcase threads to ensure enough oil has
been added.
4. To check the oil level: Wipe the dipstick with a clean rag. Insert
the dipstick into the oil fill opening without screwing it in. Remove
the dipstick to check the oil mark. (Fig. 6B)
5. Slowly add more oil and repeat step 4 until the oil mark reaches
to the top of the dipstick. Do not over fill the crankcase.
6. Check for oil leaks. Tighten dipstick firmly.
-20 0 20 40 60 80 100
-20 -10-30 0 10 20 30 40
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
°F
°C
5W-30, 10W-30
SYNTHETIC 5W-20, 10W-30
30
**
*
ASSEMBLY & ADJUSTMENTS
Fig. 6A
1
Fig. 6B
Min Oil Level
Max Oil Level
12

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