Gravely 911530 - Pro 21 SCH - Manual (Page 14)

GB - 14
Gravely Dealers will provide any service, parts
or adjustments which may be required to keep
your unit operating at peak efficiency. Should
engine require service, contact a Gravely
dealer or an authorized engine manufacturer's
service center.
MAINTENANCE SCHEDULE
NOTE: Some working conditions (heavy
loads, high ambient temperatures, dusty
conditions, or airborne debris) may require
more frequent service.
See engine manual for further maintenance
and troubleshooting information.
After first 5 Hours of operation
CHECK ENGINE/BLADE
CONTROL
The engine and blade must stop within 3
seconds after releasing the control. If the
engine and blade continue to run, adjust or
repair control immediately. See Engine/Blade
Control Adjustment on page 17.
CHECK WHEEL DRIVE CONTROL
The unit must stop quickly and completely
when the control is released. Adjust or repair if
necessary. See Wheel Drive Control
Adjustment on page 18.
CHECK GRASS BAG
Check grass bag frequently for wear or
deterioration. Replace worn or damaged bag
with Gravely original equipment replacement
bag only.
CLEAN UNIT
Before each use clean unit, muffler and engine
surfaces of debris, oil or fuel spills to ensure
proper cooling and prevent fires.
CHECK ENGINE OIL
IMPORTANT: Maintain proper oil level at all
times or engine damage will result.
Check the level of the engine crankcase oil
before each use.
Make sure engine is level when checking oil.
See engine manual for instructions.
CHECK MOWER BLADE
See Figure 6.
Check blade mounting: blade must be secure
and bolt torqued to 37.5 - 50 lbf-ft (51-68 N•m)
(bolt should fully compress lock washer).
Check blade for nicks and dull cutting edges.
Sharpen if necessary.
Check blade for rounded or broken ends,
thinned metal or other damage. Replace if
necessary.
NOTE: Blades should be sharpened and
balanced professionally. Contact your Gravely
Dealer.
To remove blade:
1. Stop engine, wait for all moving parts to
stop, and disconnect spark plug wire.
2. Block blade to prevent rotation.
3. Remove bolt, lock washer, flat washer
and blade from shaft.
To install blade:
1. Replace blade, flat washer, lock washer
and bolt on shaft.
2. Torque bolt to 37.5 - 50 lbf-ft (51-68 N•m)
(bolt should fully compress lock washer).
3. Connect spark plug wire.
MAINTENANCE
CAUTION: AVOID INJURY. Read
and understand the entire Safety
section before proceeding.
MAINTENANCE SCHEDULE
Service Performed Before
Each
Use
25 100
Check Engine/Blade
Control •
Check Wheel Drive
Control •
Check Grass Bag •
Clean Unit •
Check Engine Oil •
Check Mower Blade •
Check Drive Belt •
Check Fasteners •
Check Air Cleaner •
Change Engine Oil •
General Lubrication •
Replace Oil Filter •
Check Spark Plug •
Check Engine
Cooling •
Check Muffler •
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