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GB - 15
1. Loosen wing bolt and lift cover.
Remove pre-cleaner and cartridge
assembly.
2. Wash pre-cleaner in liquid detergent
and water. Allow to dry thoroughly.
Saturate pre-cleaner in oil (SAE #30).
Squeeze to remove excess oil. Do not
wring. Replace if extremely dirty or
damaged.
3. Tap cartridge gently on a flat surface.
Do not oil cartridge. Replace if
extremely dirty or damaged.
4. Do not use petroleum solvents
(kerosene) which will cause cartridge to
deteriorate. Do not use pressurized air
to clean cartridge. Damage can result.
5. Place the pre-cleaner on the cartridge.
6. Install air cleaner assembly in base.
Reinstall cover on air cleaner and
tighten wing bolt securely.
CHECK ENGINE OIL
IMPORTANT: Change engine crankcase oil
after first two (2) hours of operation.
Thereafter, change oil every twenty five hours
of operation (more often in dusty, dirty
conditions). Refer to Engine Manual for oil
type and grade and detailed instructions.
Engine Oil Check and Change
The engine crankcase oil should be checked
before each use or every five (5) hours of
operation. Oil level MUST be maintained in
safe operating range on dipstick at all times or
engine damage will result.
IMPORTANT: DO NOT overfill. Be sure
engine is level when adding oil.
See Engine Manual for detailed instructions.
CHECK MOWER BLADE
See figures 10 and 11.
Check blade for wear.
Check blade mounting: blade must be secure
and cap screw torqued to 37.5 - 50 ft. lbs.
(lock washer should be fully compressed by
cap screw).
When blade needs sharpening:
1. Block blade to prevent rotation.
2. Remove cap screw, lock washer and
blade from shaft.
3. Sharpen both ends of blade at original
angle (25°), removing equal amounts of
material from each end to maintain
proper blade balance. New blades are
balanced to within 1.3 in. oz. at factory.
DO NOT grind around corner at tip of
blade. If cutting edge of blade cannot
be sharpened in a straight line to within
1/8 of an inch of its end, replace blade
with Husqvarna replacement blade
only.
4. Install blade, lock washer and cap
screw. Blade must be secure and cap
screw torqued to 37.5 - 50 ft. lbs. (lock
washer should be fully compressed by
cap screw).
IMPORTANT: If mower is used under sandy
soil conditions, replace blades when air lifts
become eroded.
Figure 9
OM0590
1. Base
2. Packing
3. Cartridge
4. Pre-cleaner
5. Cover
6. Grommet
7. Wing Bolt
1
2
3
4
5
6
7
OM0230
OM0240
Mulching
Blade
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift
5. Reverse Lift
1
2
3
4
1
2
3
4
5
Standard Blade
Figure 10