Jacobsen R-311T, Parts & Maintenance Manual

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4 MAINTENANCE
en-18
4 MAINTENANCE 4.1 GENERAL________________________________________________________________
1. Adjustment and maintenance should always be
performed by a qualified technician. If proper
adjustments cannot be made, contact an Authorized
Jacobsen Dealer.
2. Inspect the equipment on a regular basis, establish a
maintenance schedule and keep detailed records.
a. Keep the equipment clean.
b. Keep all moving parts properly adjusted and lubri-
cated.
c. Replace worn or damaged parts before operating
the machine.
d. Keep all fluids at their proper levels.
e. Keep shields in place and all hardware securely
fastened.
f. Keep tires properly inflated.
3. Long hair, jewelry, or loose fitting clothing may get
tangled in moving parts.
4. Use the illustrations in the Parts Catalog as reference
for the disassembly and reassembly of components.
5. Recycle or dispose of all hazardous materials
(batteries, fuel, lubricants, anti-freeze, etc.) according
to local, state, or federal regulations.
4.2 INSPECTING BLADES______________________________________________________
1. Every 50 hours of operation or whenever blades are
removed from mower, carefully examine the blades to
make sure they are in good operating condition. Blades
showing any bends
(G)
, grooves
(H)
or cracks (
J)
must
be replaced.
2. Any of the above conditions can cause a piece of the
blade to break away and be thrown from the mower
causing very serious injury to bystanders or property
damage.
3. A bent blade could have a microscopic crack
(G)
that
can grow and allow a piece of the blade to break. Bent
blades will also create vibration and other stress on the
machinery.
4. Dust or sand particles can wear a dangerous groove in
the blade
(H)
between the air vanes and the flat portion
of the blade that will rapidly grow and produce a crack
(J)
permitting a piece of the vane to break off.
Figure 4A
WARNING
Before you clean, adjust, or repair this equipment,
disengage all drives, lower implements to the ground,
engage parking brake, stop engine, and remove key
from ignition switch to prevent injuries.
Make sure the mower is parked on a solid and level
surface. Never work on a mower that is supported only by
the jack. Always use jack stands.
!
CAUTION
Use care when checking blades to avoid pinching hands
and fingers between blade ends.
WARNING
Never attempt to straighten, weld, or repair a damaged
blade. Always replace a damaged blade.
!
!
G
H
J
HR025