Change Hydraulic Transmission Filters And Fluid; Check Spark Arrester (If Equipped); Check The Seed Gate; Thread Locking Adhesives - Exmark SD270SB20 Operator's Manual

Change Hydraulic
Transmission Filters and
Fluid
Service Interval: Every 100 hours
1. Stop engine, wait for all moving parts to stop, and
remove spark plug wire. Engage parking brake.
2. Remove the transmission from the unit.
3. Carefully clean area around the expansion tank
and oil fill port. It is important that no dirt or
contamination enter hydraulic system.
4. Remove and retain the oil fill port fitting and
position the transmission so the oil will drain
completely out of the housing.
5. When all the oil has drained from the transaxle,
remove and retain the #10-32 x 1/2 inch
self-tapping screw and ratchet fastener holding
the expansion tank to the housing.
6. Remove the expansion tank and drain the oil.
Note: Do Not remove the vent cap from the
tank.
Note: Do Not remove the tank hose or o-ring
unless a replacement is needed.
7. Reinstall the expansion tank by first inserting the
hose into the tank. Place the tank opening over
the o-ring and push down to ensure a proper seal.
Install the #10–32 x 1/2 inch self tapping screw
and torque to 25 in-lb (2.8 N-m).
8. Fill the transaxle, at the oil fill port, until the oil
level is 1/2–1 1/4 inches (13–32 mm) below the
top of the fill port.
Exmark Premium Hydro Oil is recommended.
Mobil 1 15W50 is an acceptable alternative.
9. Reinstall the oil fill port fitting.
Check Spark Arrester
(if equipped)
Service Interval: Every 50 hours
WARNING
Hot exhaust system components may ignite
gasoline vapors even after the engine is stopped.
Hot particles exhausted during engine operation
may ignite flammable materials. Fire may result
in personal injury or property damage.
Do Not refuel or run engine unless spark arrester
is installed.
1. Stop engine, wait for all moving parts to stop.
2. Wait for muffler to cool.
3. If any breaks in the screen or welds are observed,
replace arrester.
4. If plugging of the screen is observed, remove
arrester and shake loose particles out of the
arrester and clean screen with a wire brush (soak
in solvent if necessary). Reinstall arrester on
exhaust outlet.

Check the Seed Gate

Service Interval: Before each use or daily
1. Stop engine, wait for all moving parts to stop, and
remove spark plug wire. Engage parking brake.
2. Check to verify the seed gate moves freely and
is clear of debris. If necessary, clean the gate
assembly (see Cleaning the Seed Gate in the
Cleaning section).
3. If the seed gate does not open to the stop, when
the seeder control lever is in the On position,
clean the gate assembly (see Cleaning the Seed
Gate in the Cleaning section).

Thread Locking Adhesives

Thread locking adhesives such as "Loctite 242"
or "Fel-Pro, Pro-Lock Nut Type" are used on the
following fasteners:
Clutch retaining bolt in end of engine crankshaft.
All set screws.
Emptying the Fuel Tank
Service Interval: As required
1. Stop the engine and wait for it to cool down.
Engage parking brake.
Note: Drain gasoline for a cold engine only.
25
Maintenance