Adding Engine Oil; Changing Engine Oil; Air Filter Maintenance - Westinghouse WHXC3750 Instruction Manual

Adding Engine Oil

1. Always operate or maintain the generator on a flat
surface.
2. Stop engine if running.
3. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
4. Thoroughly clean around the oil fill plug/dipstick.
5. Remove oil fill plug/dipstick and wipe clean.
6. Select the proper engine oil as explained in Engine
Oil Specification on page 30.
7. Using the supplied funnel and tube, slowly add
engine oil to the engine as shown in Figure 28.
Stop frequently to check the level to avoid
overfilling.
Figure 28 – Adding Engine Oil
8. Continue to add oil until the oil is at the correct
level. See Checking Engine Oil on page 30. A
simple visual guide is to observe the oil level
relative to the bottom lip of the oil filler neck in the
engine (into which the oil plug/dipstick is screwed).
If the oil reaches the bottom lip, then it's at the high
level. If the oil is above the bottom lip and flows
out of the hole, then it's too full and the excess
must be drained out.

Changing Engine Oil

Tools required (not included) – 10 mm spanner (for
models WHXC3750 and WHXC3750-PRO) or 12 mm
spanner (for all other models) and oil drain pan.
1. Stop the engine.
2. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
3. Place oil pan (or suitable container) under the oil
drain plug.
4. With a damp rag, thoroughly clean around the oil
drain plug.
MAINTENANCE
Figure 29 – Oil Drain Plug
5. Remove the oil drain plug (see Figure 26). Once
removed, place the oil drain plug on a clean
surface.
6. Remove the oil fill plug/dipstick so the oil can flow
more easily from the oil drain port.
7. Allow oil to drain completely.
8. Replace and tighten oil drain plug.
9. Fill crankcase with oil following the steps outlined
in Adding Engine Oil.
10. Dispose of used engine oil properly.
NOTICE
Never dispose of used engine oil by dumping the oil
into a sewer, on the ground, or into groundwater or
waterways. Always be environmentally responsible.
Follow the guidelines of the governmental agencies
for proper disposal of hazardous materials. Consult
local authorities or reclamation facility.

air FiltEr MaintEnanCE

!
WARNING
Never use fuel or other flammable
solvents to clean the air filter. Use
only household detergent and warm
water or alternatively a non-flammable
solvent.
NOTICE
Do not operate the generator without an air filter
element or with a damaged air filter element.
This will allow dirt to enter the engine and cause
accelerated wear and/or shorten the life of the
engine.
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