39
Section 5: Maintenance & Lubrication
11/05/10
Z48, Z54, ZSR54 & ZSR60 Accu-Z Razor
®
Zero Turn Mowers 357-344M
Table of Contents
13. Reinstall expansion tank cap (#7) by hand. Be
careful to not overtighten.
14. Wipe off all excess oil. A degreaser may be needed
to remove excess oil.
15. Repeat steps 1 thru 14 for the right side.
Transaxle Purging Procedures
It is critical that air is purged from the hydrostatic drive
system to keep it efficient. This is because compression
and expansion rate of air is higher than that of oil.
This purge procedure should be implemented any time
the hydrostatic system has been opened to facilitate
maintenance or after the oil has been changed.
Symptoms of a hydrostatic system that has not been
purged may be:
1.
Noisy operation.
2.
Lack of power after short term operation.
3.
High operation temperature and excessive
expansion of oil.
Refer to Figure 5-11 on page 38:
Before purging the system, make sure fill tubes (#10) are
full of oil and expansion tanks (#11) are filled to the cold
full line. Squeeze all air from the fill tubes and add oil if
the expansion tanks are low. See page 51 for transaxle
oil specifications.
The following procedures are best performed with the
mower drive wheels off the ground. Then repeated under
normal operating conditions. If this is not possible, then
the procedure should be performed in an open area free
of any objects or bystanders.
1.
Open both transaxle bypass valves by pulling out on
the bypass valve rods (#13) and lifting them into the
slot to lock them in position. Bypass valve rods are
located at the rear of the engine platform.
2.
Start the engine and place both control levers in
neutral. Slowly move the control levers completely
forward and reverse 5 to 6 times.
3.
Close both bypass valves by pulling back on the
rods, lowering them down and slowly releasing them
to allow the springs to pull back on the rods.
4.
With the engine running and the control levers in
neutral, slowly move the levers forward and reverse
5 to 6 times.
5.
Stop engine and check fill tubes (#10) and expansion
tanks (#11). Squeeze any air out that might be in the
expansion tubes and add oil to the expansion tanks if
low.
NOTE: The fill tube (#5) should be hand squeezed
several times to burp out air and to drain oil from the
expansion tank into the tube. Be careful not to
damage the tube while squeezing it. Use a
protective cloth wrapped around the tube if using a
tool to squeeze such as a pair of pliers.
6.
It may be necessary to repeat Steps 1 to 5 until all air
is completely purged from the system and the
transaxle operates at normal noise levels and travels
at normal speeds.
Fuel System
!
DANGER
• Replacement of fuel system parts (i.e. gas caps, hoses, fuel
tanks, fuel filters, etc.) must be the same as original parts.
Fire and/or explosion can occur if not followed.
• Observe safe fuel handling precautions.
• Replace gas cap immediately after filling tank with fuel.
Never operate mower without gas caps installed.
• Do not smoke while handling fuel or around the gas tank.
• Do not fill tank with engine running or while engine is hot.
Allow engine to cool before filling. Spilling fuel over
engine, muffler, or hot objects may result in a fire or
explosion.
• Allow engine to cool before servicing the fuel system.
• Do not fill fuel tanks to the top if mowing on hilly terrain or
in hot weather. Gas can rise up to the fuel cap vent hole and
seep out.
• Clean up any gasoline spills immediately.
• Keep fuel away from open flame or spark.
• Store mower away from open flame or spark if there is fuel
in the tank.
• Use extra caution when handling gasoline and other fuels.
They are flammable and vapors are explosive. A fire or
explosion from gasoline can burn you and others and can
damage property.
• Refuel outdoors preferably, or in well ventilated areas.
• Never attempt to start the engine when there is a strong
odor of gasoline fumes present. Locate and correct cause.
• Store gasoline in an approved container and keep it out of
children’s reach.
• Never buy more than a 30 day supply of gasoline.
• Do not fill gasoline containers inside a vehicle, on a truck,
or on a trailer. Interior carpets and plastic truck bed liners
insulate the container and slow loss of static charge.
• When practical, remove equipment from the truck or trailer
and refuel the equipment with its wheels on the ground. If
this is not possible, then refuel the equipment on the truck or
trailer using a portable container and not a gasoline
dispenser nozzle. If a gasoline dispenser nozzle must be
used, keep nozzle in contact with rim of fuel tank or
container opening at all times until fueling is complete.
• Gasoline is a poison that is harmful or fatal if swallowed.
• Avoid prolonged breathing of vapors. Long-term exposure
to vapors can cause serious injury and illness
• Keep face away from nozzle and gas tank opening.
• Keep gas away from eyes and skin.
IMPORTANT: The transaxle is considered purged
when it operates at normal noise levels and moves
smoothly forward and reverse at normal speeds.
