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Section 3 - MAINTENANCE
3.3 SERVICE EVERY 25 OPERATING HOURS
3.3.1. ENGINE
5. Air Filter
c. Reinstall air cleaner cover. Insert tabs located
on the engine cover into corresponding slots in air
cleaner cover. IMPORTANT: The yellow tabs must
be completely inserted into air cleaner cover or the
compartment will not be completely sealed to
prevent debris from entering into the carburetor.
a. 18 HP Engines: Change air filter. Pull up and
rotate the air cleaner latch to remove cleaner cover.
See Figure 3.4.
IMPORTANT: When cover is removed, you are
viewing the carburetor side of the air filter, which
will appear clean. Remove filter and pre-cleaner for
inspection.
FIGURE 3.4
b. Refer to engine owner's manual for cleaning and
service instructions. Remove and clean engine air
pre-cleaner. Remove and replace engine air
cleaner. See Figure 3.5. Install pre-cleaner and air
cleaner per engine owner’s manual.
FIGURE 3.5
c. Reinstall air cleaner cover. Insert tabs located at
the bottom of the cover into corresponding slots in
engine cover. Position cover and engage latch over
cover and rotate and push down to lock.
3.3.2. MOWER COMPONENTS
1. Mower Drive Belt
Check belt for proper tension. No adjustment
required. Replace belt as needed.
2. Mower Blade
Check blade for sharpness, wear, damage, and
torque. See the section on Mower Blade
Replacement/Repair.
3. Mower Deck Levelness
Check mower deck for proper levelness. Adjust as
required. See section on Mower Deck Adjustment -
Levelness.
4. Cleaning Mower Deck
a. Close vent on fuel cap and make sure cap is
tight.
b. Remove key from ignition switch. Engage
parking brake.
c. Remove spark plug wire(s) and secure away
from spark plug(s).
d. Raise cutting deck to highest setting. With a
floor jack, raise front of machine to gain easier
access to under deck. Block machine securely.
WARNING
Lifting or letting down the machine onto blocks
manually can cause severe injury. Always use floor
jack when raising machine.
e. Clean underside of mower deck, removing all
accumulation of grass clippings and debris.
f. Lower SCRAMBLER to ground. Clean top of
deck, removing all grass clippings and debris.
3.3.3. LUBRICATION
1. Mower Blade Spindle
a. Lubricate spindle bearings with three shots of
general purpose grease from grease gun. See
Figure 3.6.
FIGURE 3.6
LUBRICATE
SPINDLE
BEARINGS
TOP VIEW OF 48” DECK
AIR CLEANER
COVER
AIR CLEANER
LATCH
AIR CLEANER
AIR PRE-
CLEANER