Exmark 850 Lawn Aerator User Manual


 
Maintenance
Change Engine Oil
Service Interval: After the rst 5 hours
Every 100 hours (May
need more often under
severe conditions.)
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Drain oil while engine is warm from operation.
3. Remove the oil drain plug from the right hand
side of the engine. Allow oil to drain, replace
drain plug.
4. Replace the oil lter per the engine owner’s
manual. Clean around oil lter and unscrew lter
to remove. Before the new lter is installed,
apply a thin coating of oil on the surface of the
rubber seal. Turn lter clockwise until rubber seal
contacts the lter adapter, then tighten lter an
additional 2/3 to 3/4 turn.
5. Clean around oil ll cap and remove cap. Fill to
specied capacity and replace cap.
6. Use oil recommended in engine owner’s manual.
Do Not overll. Start the engine and check for
leaks. Stop engine and recheck oil level.
7. Wipe up any spilled oil from engine deck
mounting surfaces.
Check Tire Pressures
Service Interval: Every 40 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Check tire pressure in drive tires.
3. Inate drive tires to 12–16 psi (83–110 kPa).
4. Inate tires to pressures stated above. Measure
the circumference of each drive tire. Adjust tire
pressures within the above range to try to make
tire circumferences match as closely as possible.
5. Semi-pneumatic caster tires Do Not need to be
inated.
Note: A more uniform cutting height may be
obtained with higher tire pressure on rough terrain.
A lower tire pressure provides more otation.
Check Condition Of Belts
Service Interval: Every 40 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Remove the mower deck belt shield to check
mower blade drive belt condition.
3. Look under engine deck to check the transmission
drive belt condition.
4. Inspect wheel drive belt conditions.
5. Check all idler arms to be sure they pivot freely.
Disassemble, clean and grease pivot bushings if
necessary.
Lubricate Grease Fittings
Note: See chart for service intervals.
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Lubricate ttings with NGLI grade #2
multi-purpose gun grease.
Refer to the following chart for tting locations
and lubrication schedule.
Lubrication Chart
Fitting
Locations
Initial
Pumps
Number of Places Service
Interval
32 inch
Deck
36 inch
Deck
48 inch
Deck
1. Front
Caster
Wheel
Bearings
12 2 2 2
Daily
2. Front
Caster
Pivots
2 2 2 2
Daily
3. Drive
Wheels
18 2 2 2
Daily
4. Drive
Wheel
Idler Arm
2 2 2 2
Daily
5. Brake
Arm
2 2 2 2
40
hours
22