Craftsman 107.28993 - Manual (Page 25)

25
Service Interval: 100 hours.
1. Disconnect the cables from the battery, negative
cable first (B, Figure 25).
2. Remove the rubber strap securing the battery, and
remove the battery.
3. Clean the battery and battery compartment with a
solution of baking soda and water.
4. Clean the battery terminals and cable ends with a
wire brush until shiny.
5. Reinstall the battery and secure with the rubber strap.
6. Reattach the battery cables: first attach the positive
cable (see A, Figure 25), then attach the negative
cable (B).
7. Coat the cable ends and battery terminals with petro-
leum jelly or non-conducting grease.
Figure 25. Engine Compartment
A. Positive (+) Battery Cable
B. Negative (-) Battery Cable
CHECK RIDER SAFETY
SYSTEM
Service Interval: Every 100 hours, every spring/fall,
and after storage of 30 days or longer.
This unit is equipped with safety interlock switches.
These safety systems are present for your safety. Do
not attempt to bypass safety switches, and never tamp-
er with safety devices. Check their operation regularly.
Operational SAFETY Checks
TEST 1 — ENGINE SHOULD NOT CRANK IF:
• Mower blades switch is ON, OR
• Ground speed control levers are not in their
START/PARK positions, OR
• Parking brake lever is in DISENGAGE position.
TEST 2 — ENGINE SHOULD CRANK IF:
• Mower blade switch is OFF, AND
• Ground speed control levers are in their
START/PARK positions, AND
• Parking brake lever is in ENGAGE position.
TEST 3 — ENGINE SHOULD SHUT OFF IF:
• Operator rises off seat with the mower blade switch
ON, OR
• Operator rises off seat with the ground speed levers
in DRIVE positions, OR
• Operator rises off seat with the parking brake in
DISENGAGE position, OR
• Operator moves the left and/or right ground speed
control lever out of its START/PARK position with
the parking brake lever in ENGAGE position.
TEST 4 — BLADE BRAKE CHECK
The mower blades and mower drive belt should come
to a complete stop within five seconds after the mower
blade switch is turned OFF. If mower drive belt does
not stop within five seconds, contact your local author-
ized dealer.
NOTE: Once the engine has stopped, the mower blade
switch must be turned OFF, the ground speed control
levers must be locked in their START/PARK positions,
and the parking brake lever must be in the ENGAGE
position in order to start the engine.
WARNING
If the unit does not pass a safety test, do not oper-
ate it. See your local authorized dealer. Under no
circumstance should you attempt to defeat the pur-
pose of the safety interlock system.
WARNING
Corrosion hazard.
Batteries contain acid. Always keep the
battery upright and do not spill the
electrolyte. Avoid contact with skin and
eyes.
Explosion hazard.
Changing the battery produces explosive
hydrogen gas. Only charge the battery in a
well ventilated area, away from any ignition
source such as a water heater, electric
motor, or a lit cigarette.
Wear Protective Equipment
Always wear gloves and safety glasses
when handling the battery and battery
cables.
CLEANING THE BATTERY AND
CABLES
A
B
Not
for
Reproduction