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Clean Air Screen; To Change Engine Oil - Husqvarna LTH1438 Owner's Manual

Husqvarna lawn mower user manual
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TRANSAXLE MAINTENANCE
The transmission fan and cooling fins should be kept clean
to assure proper cooling.
Do not attempt to clean fan or transmission while engine
is running or while the transmission is hot. To prevent pos -
si ble damage to seals, do not use high pressure water or
steam to clean transmission.
Inspect cooling fan to be sure fan blades are intact and
clean.
Inspect cooling fins for dirt, grass clippings and other
materials. To prevent damage to seals, do not use
compressed air or high pressure sprayer to clean
cool ing fins.
TRANSAXLE PUMP FLUID
The transaxle was sealed at the factory and fluid main te -
nance is not required for the life of the transaxle. Should
the transaxle ever leak or require servicing, contact your
near est au tho rized ser vice center/department.
V-BELTS
Check V-belts for deterioration and wear after 100 hours
of operation and replace if necessary. The belts are not
ad just able. Re place belts if they begin to slip from wear.
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
NOTE: Although multi-viscosity oils (5W30, 10W30 etc.)
improve starting in cold weather, they will result in increased
oil consumption when used above 32°F. Check your engine
oil level more frequently to avoid possible engine damage
from running low on oil.
Change the oil after every 25 hours of operation or at least
once a year if the tractor is not used for 25 hours in one year.
Check the crankcase oil level before starting the engine
and after each eight (8) hours of operation. Tighten oil fill
cap/dipstick securely each time you check the oil level.
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.
MAINTENANCE
SAE 30
32
40
60
80
0
10
20
30
Fig. 19
CLOSED
AND
LOCKED
POSITION
YEL LOW CAP
Remove yellow cap from end of drain valve and install
the drain tube onto the fitting.
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.
AIR FILTER
Your engine will not run properly using a dirty air filter.
Service air cleaner more often under dusty conditions.
See Engine Manual.

CLEAN AIR SCREEN

Air screen must be kept free of dirt and chaff to prevent
100
engine dam age from overheating. Clean with a wire brush or
40
compressed air to re move dirt and stubborn dried gum fibers.
ENGINE COOLING SYSTEM (See Fig. 21)
Debris may clog the engine's air cooling system. Remove
blower housing and clean the area shown to prevent over-
heating and engine damage.
AIR SCREEN
18
OIL DRAIN VALVE
DRAIN
TUBE
Fig. 20
CLEAN OUT CHAFF AND DEBRIS
02744
Fig. 21

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