WT5C SERIES WATER TRAILER • OPERATION MANUAL — REV. #6 (05/28/21) — PAGE 29
MAINTENANCE
Perform the scheduled maintenance procedures as defined
by Table 6 and below:
DAILY
Thoroughly remove dirt and oil from the engine and
control area. Clean or replace the air cleaner elements
as necessary. Check and retighten all fasteners as
necessary. Check the gearbox for oil leaks. Repair or
replace as needed.
WEEKLY
Remove the fuel filter cap and clean the inside of the
fuel tank.
Remove or clean the filter at the bottom of the tank.
Remove and clean the spark plug (Figure 28), then adjust
the spark gap to 0.024–0.028 inch (0.6–0.7 mm). This
unit has electronic ignition, which requires no adjustments.
Figure 28. Spark Plug Gap
ENGINE OIL
1. Drain the engine oil when the oil is warm as shown in
2. Remove the oil drain bolt and sealing washer and allow
the oil to drain into a suitable container.
3. Replace engine oil with recommended type oil as
listed in Table 4. For engine oil capacity, see Table 1
(Specifications).
DO NOT
overfill.
4. Install drain bolt with sealing washer and tighten
securely.
GAP
:
0.024 – 0.028 in.
(0.6 – 0.7 mm)
Figure 29. Engine Oil (Draining)
ENGINE AIR CLEANER
1. Remove the air cleaner cover and foam filter element
as shown in Figure 30.
2. Tap the paper filter element (Figure 30) several times
on a hard surface to remove dirt, or blow compressed
air not exceeding 30 psi (207 kPa, 2.1 kgf/cm²) through
the filter element from the air cleaner case side.
NEVER
brush off dirt. Brushing will force dirt into the fibers.
Replace the paper filter element if it is excessively dirty.
3. Clean foam element in warm, soapy water or
nonflammable solvent. Rinse and dry thoroughly. Dip
the element in clean engine oil and completely squeeze
out the excess oil from the element before installing.
Figure 30. Engine Air Cleaner
DRAIN
BOLT
SEALING
WASHER
OIL FILLER
DIPSTICK
DANGER
DO NOT
use gasoline as a cleaning solvent to avoid
creating the risk of fire or an explosion.
AIR CLEANER
COVER
PAPER FILTER
ELEMENT
BLOW COMPRESSED
AIR FROM THE
INSIDE OUT
FOAM FILTER
ELEMENT
GASKET
WING NUT
