Maintaining your lawn mower, Warning – Cub Cadet 990 User Manual
Page 15

1
Maintaining
Your Lawn
Mower
2. Insert the battery charger plug into a standard 120
volt household outlet. See Figure 5-15. Charge battery 
for 8 to 10 hours before initial use. 
Do not charge
longer than 12 hours. The battery should only need 
to be charged upon initial setup and after any other 
extended periods of non-use.
3. After charging, disconnect charger plug from outlet
first, then disconnect charger lead from battery.
IMPORTANT: Always plug charger lead into battery pack 
lead first, and then insert battery charger plug into 120 
volt standard household outlet. Follow this order of action 
every time you charge the battery.
Replacing Fuse
The electric starter circuit and battery are protected by a 
40 ampere fuse. If the fuse burns out, the electric starter 
will not operate. If the unit fails to start with the electric 
starter, perform the following steps to check the fuse 
inside the battery housing:
1. Open the battery cover as described in 
Replacing
Battery. Refer to Figure 5-13.
2. Remove fuse from socket and inspect as shown in
Figure 5-16. If it is burned out, replace with standard 
automotive 40 ampere fuse.
3. Carefully place wiring back into housing, close battery
cover, and fold upper handle back into place.
NOTE: The engine can be started manually if the fuse 
burns out.
Off-Season Storage
The following steps should be taken to prepare your lawn 
mower for storage.
• Clean and lubricate mower thoroughly as described in 
the lubrication instructions.
• We do not recommend the use of a pressure washer
or garden hose to clean your unit.
• Refer to engine manual for correct engine storage
instructions.
• Coat mower’s cutting blade with chassis grease to
prevent rusting.
• Store mower in a dry, clean area. Do not store next to
corrosive materials, such as fertilizer.
When storing any type of power equipment in a poorly 
ventilated or metal storage shed, care should be taken to 
rust-proof the equipment. Using a light oil or silicone, coat 
the equipment, especially cables and all moving parts of 
your lawn mower before storage.
Battery (If Equipped)
The battery must be stored with a full charge. Extended 
storage of a discharged battery will reduce life and 
capacity of the battery.
Figure 5-16: When replacing fuse, use a standard automotive 
40 Amp fuse.
Do not remove the
battery pack from the
electric starter hous-
ing for any reason
other than replace-
ment.
WARNING
NOTE: The engine can 
be started manually if 
the fuse burns out.
