Servicing The Electronic Fuel Injection System; Electrical System Maintenance; Servicing The Battery - Toro 74933 Operator's Manual

◊ Using a small brush or spray bottle, apply the
solution around all the fittings of the LPG tank
and the fuel connection joint.
◊ Slowly open the gas valve a half-turn.
◊ If bubbles are detected, the joint or fitting has
a leak. Shut off the valve, tighten the leaking
connection, and slowly open the valve again. If
bubbles still appear, do notuse the tank. If it is
safe to do so, remove the tank from your mower;
otherwise, contact trained and qualified personnel
immediately.
◊ If no bubbles are detected, the LPG tank may be
used.
•
Inspecting weekly:
– Check the LPG hoses, regulator, and connections for
damage or deterioration.
– Check the LPG hoses, regulator, and connections for
leaks at all joints using the same method as described
in the previous section.
– Follow all the inspection checks as specified in the
two previous inspection sections.
•
Tank Requalification:
– USDOT (United States Department of
Transportation) regulations require LPG tanks to be
inspected, requalified, and marked within 12 years of
the manufacture date and on a regular basis thereafter.
Typically this occurs when the tank is refilled; contact
a trained and qualified LPG tank provider for more
details.
– Do not fill the LPG tank if it is beyond the
requalification period.
– Do not fill damaged or rusted LPG tanks.
Servicing the Electronic Fuel
Injection System
This machine contains an electronic fuel injection system. It
controls the fuel flow under different operating conditions.
The electronic control unit (ECU) continuously monitors the
operation of the EFI system.
If a problem or fault within the system is detected, the
malfunction indicator light (MIL) is illuminated. The MIL is
the red light located in the right console panel.
Once the MIL illuminates, initial trouble shooting
checks should be made. Refer to the MIL section under
Toubleshooting.
If these checks do not correct the problem, further diagnosis
and servicing by an Authorized Service Dealer is necessary.
Electrical System
Maintenance

Servicing the Battery

Service Interval: Monthly
CALIFORNIA
Proposition 65 Warning
Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California
to cause cancer and reproductive harm.
Wash hands after handling.
DANGER
Battery electrolyte contains sulfuric acid which is a
deadly poison and causes severe burns.
Do not drink electrolyte and avoid contact with
skin, eyes or clothing. Wear safety glasses to shield
your eyes and rubber gloves to protect your hands.
Removing the Battery
WARNING
Battery terminals or metal tools could short against
metal machine components causing sparks. Sparks
can cause the battery gasses to explode, resulting
in personal injury.
• When removing or installing the battery, do not
allow the battery terminals to touch any metal
parts of the machine.
• Do not allow metal tools to short between
the battery terminals and metal parts of the
machine.
40
WARNING