CTS 400 Flex Owner’s Guide: 56
INTERVAL HOURS - 600 TO 1200
Engine oil and filter
Blower oil
High pressure
pump oil
Low pressure pump
tuning
SERVICE
600 625 650 675 700 725 750 775 800 825 850 875 900 925 950 975 1000 1025 1050 1075 1100 1125 1150 1175 1200
Inspect recovery tank
filters for tears, holes,
etc. Repair or replace
as needed.
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Inspect the vacuum
relief valve. Clean
and lubricate as
necessary.
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Clean the recovery
tank thoroughly with
pressure washer.
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Check the oil level in
the blower. Add oil if
needed.
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Check the pump
drive belt for wear
and proper tension.
Tighten as needed.
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Check all the hoses
and wiring for wear
and chafing. Secure
as needed.
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Flush the water and
chemical systems
with solution of equal
parts white vinegar
and water.
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Check all the nuts
and bolts. Tighten as
needed.*
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Change the engine
oil and filter every 50
hours. (Every 25
hours if operating in
high ambient
temperatures or
heavy use
conditions.)
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R
SERVICE
600 625 650 675 700 725 750 775 800 825 850 875 900 925 950 975 1000 1025 1050 1075 1100 1125 1150 1175 1200
Check the engine air
filter. Clean or
replace as
necessary.
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Check the water level
in battery. Fill as
needed.
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Clean QC filter and
orifice with water
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Clean the battery
terminals as needed.
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Lubricate inlet float
plunger with
SuperLube O-ring
grease #92003 or
equivalent.
C/L
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C/L
C/L
SERVICE
600 625 650 675 700 725 750 775 800 825 850 875 900 925 950 975 1000 1025 1050 1075 1100 1125 1150 1175 1200
Check the coupler
element (rubber
insert) for cracks or
wear. Replace as
necessary.
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Check the fuel lines.
Repair or replace as
needed.
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Gap the spark plugs
to 0.030”. Replace if
excessive carbon
buildup is visible.
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Change the fuel filter.
R
R
R
Change pump drive
belt.
R
R
R
SERVICE
600 625 650 675 700 725 750 775 800 825 850 875 900 925 950 975 1000 1025 1050 1075 1100 1125 1150 1175 1200
Change the blower
oil.
R
Change the high
pressure pump oil.
R
Check the engine
valve clearance
(intake and exhaust
0.004” - 0.006”)
CH
Change the fuel filter.
R
SERVICE
600 625 650 675 700 725 750 775 800 825 850 875 900 925 950 975 1000 1025 1050 1075 1100 1125 1150 1175 1200
Change air filters.
R
Check carburetor.
Clean or replace as
necessary.
CH
Replace the coupler
element (rubber
insert) for cracks or
wear. Replace as
necessary
R
Clean the heat
exchanger core.
C/I
Adjust
Check
Clean and Inspect
Clean and Lubricate
Flush
Replace
DAILY MAINTENANCE CTS 400
Check the engine oil level. Add oil if needed.
Check the high pressure pump oil. Add oil if needed.
Inspect and clean the recovery tank filters.
Inspect and clean the orifices and filters.
Inspect and clean the garden hose screen.
Lubricate the blower lube port with HydraMaster-recommended spray lubricant.
INTERVAL IN HOURS CTS 400
Change engine oil and filter after first 8 hours; afterwards, change the engine oil and filter every 50 hours.
(Every 25 hours if operating in high ambient temperatures or heavy use conditions.)
Change the blower oil after first 100 hours of use.
Change high pressure pump oil after first 50 hours of operation. (Every 500 hours thereafter.)
Perform Flex pump tuning procedure every 60 days
MAN-46783 Rev. A
Inspect and rinse the recovery tank.
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C/L
F
R
* Check engine and blower mounting bolts, coupler retaining bolts, exhaust fasteners, etc.
A
CH
Inspect the truckmount for water and oil leaks, loose electrical connections, etc. and repair as needed.