Maintenance Instructions
D21d
Checking and Servicing
74
Alternator Belt Tension
Check and adjust the alternator belt tension
to
avoid
engine overheating and insufficient bat
-
tery charging.
Push on the belt in the middle of
the span between the alternator and crankshaft. If
properly tensioned, it should deflect about
0.4 in.
(10 mm).
Also check the belt for cracks or deterio-
ration.
Alternator Belt
0.4 in. (10 mm)
Deflection
Alternator Belt Tension
Security of Air Filtration Components
NOTE:
The following inspection is
only an exter-
nal inspection
and should be done without
“dis-
turbing”
the filtration components.
On a daily basis, visually inspect the external
condi tion of the complete air cleaner system. The
follow ing items should be inspected:
1. Check the Donaldson Radialseal
TM
air cleaner
canister for damage. Make sure the cover is
in place and the cover latches are secure—do
not run the engine without the air cleaner
cover in place and secure.
2. Inspect the air intake hose for cracks, nicks,
cuts, etc., and check the hose clamps for
tight ness.
3.
Check to make sure the air filter restriction
gauge is in place and hose connections are
secure.
Battery
The battery comes sealed and is maintenance-
free, so the electrolyte level will not need to be
checked or filled.
IMPORTANT:
Make sure battery is securely
mounted in the frame. A loose battery may cause
damage to the case resulting in acid leakage and
severe damage to the machine. A hazard may be
created by damage to critical working parts and
safety systems.
CAUTION
Important Battery Service, Installation, and
Charging Tips:
●
Do not allow the battery cables to touch
opposing terminals. When connecting
battery cables attach the positive (+)
cable to positive (+) battery terminal
first, followed by negative (-) cable to
negative (-) battery terminal.
●
Never start the engine when the cables
are loose or poorly connected to the
battery terminals.
●
Never disconnect battery while engine
is running.
●
Never use a quick battery charger to
start the engine.
Cleaning the Terminals
If battery terminals are corroded,
remove the
battery
from the mower. Using a wire brush,
remove corro sion with a solution of
one part bak-
ing soda and four parts water.
Rinse with clean
water. Coat the terminals with petroleum jelly or
terminal protector spray to retard further corrosion.
