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Husqvarna LTH1538/96043003802 Owner's Manual page 18

Ride-on mowers
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TRANSAXLE COOLING
Keep transaxle free from build-up of dirt and chaff which
can restrict cooling.
ENGINE
LUBRICATION
Only use high quality detergent oil rated with API service
classification SG-SL. Select the oil's SAE viscosity grade
according to your expected operating temperature.
SAE VISCOSITY GRADES
5W-30
-20
0
30
F
C
-20
-30
-10
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
Change the oil after every 50 hours of operation or at least
once a year if the tractor is not used for 50 hours in one year.
Check the crankcase oil level before starting the engine
and after each eight (8) hours of operation.
TO CHANGE ENGINE OIL (See Figs. 19 and 20)
Determine temperature range expected before oil change.
All oil must meet API service classification SG-SL.
Be sure tractor is on level surface.
Oil will drain more freely when warm.
Catch oil in a suitable container.
Remove oil fill cap/dipstick. Be careful not to allow dirt
to enter the engine when changing oil.
Remove yellow cap from end of drain valve and install
the drain tube onto the fitting.
OIL DRAIN VALVE
CLOSED
AND
LOCKED
POSITION
YEL LOW CAP
Unlock drain valve by pushing inward and turning
coun ter clock wise.
To open, pull out on the drain valve.
After oil has drained completely, close and lock the
drain valve by pushing inward and turning clockwise
until the pin is in the locked position as shown.
Remove the drain tube and replace the cap onto to the
bottom fitting of the drain valve.
Refill engine with oil through oil fill dipstick tube. Pour slowly.
Do not overfill. For approximate capacity see "PRODUCT
SPECIFICATIONS" section of this man u al.
Use gauge on oil fill cap/dipstick for checking level.
For accurate reading, insert dipstick into the tube and
push down firmly into place before removing. Keep oil
up to, but not over, the "FULL " line on dipstick. Push
dipstick down firmly into the tube when finished.
MAINTENANCE
10W30
32
40
60
80
0
10
20
30
oil_visc_chart4_e
Fig. 19
DRAIN
TUBE
Fig. 20
V-BELTS
Check V-belts for deterioration and wear after 100 hours
and replace if necessary. The belts are not adjustable.
Re place belts if they begin to slip from wear.
CLEAN AIR SCREEN
Air screen must be kept free of dirt and chaff to prevent
engine dam age from overheating. Clean with a wire brush
or com pressed air to re move dirt and stubborn dried gum
fibers.
AIR FILTER
Your engine will not run properly using a dirty air filter.
Service air cleaner more often under dusty conditions.
See Engine Manual.
100
ENGINE OIL FILTER
40
Replace the engine oil filter every season or every other
oil change if the tractor is used more than 100 hours in
one year.
MUFFLER
Inspect and replace corroded muffler and spark arrester
(if equipped) as it could create a fire hazard and/or dam-
age.
SPARK PLUGS
Replace spark plugs at the beginning of each mowing sea-
son or after every 100 hours of use, whichever comes first.
Spark plug type and gap setting is shown in "PROD UCT
SPECIFICATIONS" section of this manual.
IN-LINE FUEL FILTER (See Fig. 21)
The fuel filter should be replaced once each season. If fuel
filter becomes clogged, ob struct ing fuel flow to car bu re tor,
re place ment is re quired.
With engine cool, remove filter and plug fuel line sec-
tions.
Place new fuel filter in position in fuel line with arrow
pointing towards carburetor.
Be sure there are no fuel line leaks and clamps are
properly positioned.
Immediately wipe up any spilled gasoline.
CLAMP
CLEANING
Clean engine, battery, seat, finish, etc. of all foreign
matter.
Keep finished surfaces and wheels free of all gasoline,
oil, etc.
Protect painted surfaces with automotive type wax.
We do not recommend using a garden hose or pressure
washer to clean your tractor unless the engine and trans-
mission are covered to keep water out. Water in engine or
transmission will shorten the useful life of your tractor. Use
compressed air or a leaf blower to remove grass, leaves
and trash from tractor and mower.
18
CLAMP
FUEL FILTER
Fig. 21

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