Farm Star MDM70-72C 6 - Manual (Page 20)

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O W N E R S E RV I C E
The information in this section is written for operators
who possess basic mechanical skills. Should you need
help, your dealer has trained service technicians
available. For your protection, read and follow all safety
information in this manual.
W A R N I N G !
▲ Before working underneath, raise 3-pt. hitch to
highest position and block cutter securely.
Hydraulic system leakdown and failure of
mechanical or hydraulic system can cause equip-
ment to drop.
▲ Keep all persons away from operator control area
while performing adjustments, service or mainte-
nance.
▲ Lower mower to ground or block securely, turn
tractor engine off, remove key and disconnect
mower driveline from tractor PTO before perform-
ing any service or maintenance.
L U B R I C AT I O N I N F O R M AT I O N
Figure 7 shows the lubrication points. The accompany-
ing chart gives the frequency of lubrication in operating
hours, based on normal conditions. Severe or unusual
conditions may require more frequent lubrication.
Do not let excess grease collect on or around parts,
particularly when operating in sandy areas.
Use an SAE 90W gear lube in gearbox.
Use a lithium grease of NO. 2 consistency with a MOLY
(molybdenum disulfide) additive for all locations. Be sure
to clean fittings thoroughly before attaching grease gun.
When applied according to the lubrication chart, one
good pump of most guns is sufficient. Do not over
grease.
Figure 7.
LUBRICATION CHART
REF NO. DESCRIPTION FREQUENCY
1 Front U-Joint 8 Hrs.
2 Rear U-Joint 8 Hrs.
3 Gearbox – Fill to proper level Check Daily
4 Slip Joint 8 Hrs.
5 Tail Wheel 8 Hrs.
Daily lubrication of the PTO slip joint is necessary.
Failure to maintain proper lubrication can result in
damage to U-joints, gearbox, tractor PTO and/or mower
driveline.
ALWAYS OBEY ALL
SAFETY WARNINGS!!
R O U T I N E M A I N T E N A N C E
DAILY CHECKS:
1. Check that all bolts, nuts, and screws are tight.
Checking the bolts and nuts on the blade beam
assembly is particularly important.
2. Check daily the level of the gearbox oil and top up to
the correct level. Check for gearbox oil leaks. It should
be noted that no warranty claim can be submitted on
a gearbox that has run dry. It is essential that the
gearbox is kept correctly filled with gearbox oil.
3. Grease the PTO shaft daily.
4. Check the wear on the blades. Sharpen them
routinely with an angle grinder or replace when worn
down too far. You should keep at least two sets of
blades, bolts, and nuts as spares for your mower.
AT THE END OF YOUR CUTTING SEASON:
1. Drain and change the oil in your gearbox.
2. Check and replace, where necessary, blades, bolts,
nuts, or bushings, on the machine.
3. Clean machine and touch up any rust spots that may
have appeared.
4. Replace any safety signs if damaged.
5. Store mower in clean, dry location.
Figure 4.
NOTE: The use of a PTO over-running clutch or exten-
sion could require that the PTO driveline be shortened a
considerable amount. If this is done, the driveline halves
may separate when the mower is lowered to the ground
or when operated on rough ground.
NOTE: Because of the above situation, and that the use of
PTO extensions extend the front PTO driveline joint beyond
the protection of the tractor PTO shield, the use of PTO
extensions and over-running clutches of this type are not
recommended.
If your tractor is not equipped with a “Live” PTO and
requires an over-running clutch, check with your dealer
about the availability of special PTO drivelines equipped
with an over-running clutch.
4. Raise and lower the mower to determine position with
greatest distance between the PTO shaft and gearbox
input shaft. Shut tractor off, leaving mower in position
of greatest distance between shafts. SECURELY
BLOCK MOWER IN POSITION.
5. Hold driveline sections parallel to each other and
check for minimum 6” (15cm) overlap. If driveline
has been marked for cutting, overlap will be the
distance between the two marks. If driveline has less
than minimum overlap, do not use. Contact
authorized Worksaver dealer.
I N S T R U C T I O N S (continued)
1. Drive Shield
2. Tether Chain
3. Bolt
4. Nut
5. Gearbox Input Shaft
6. Gearbox Input Shield
Figure 3.
Optional Slip Clutch Driveline Installation
Align the holes in the driveline yoke and gearbox input
shaft and install bolt (7) and (1).
Lubricate rear driveline half and install front driveline
half.
SLIP CLUTCH MODELS
Optional Slip Clutch Driveline Installation
(Figure 3)
A new slip clutch, or one that has been in storage over
the winter may seize. Before operating, make sure it will
slip. Refer to slip clutch adjustment on page 26.
In some cases it will be necessary to shorten the PTO
assembly to match your particular tractor. The following
procedure should be used:
1. Raise the tractor 3-pt. hitch so the input shaft of the
mower gearbox is in line with the PTO shaft on the
tractor. Shut down tractor, leaving mower in position
of shortest distance between shafts. SECURELY
BLOCK MOWER IN POSITION.
2. Pull driveline apart. Attach outer (female) section to
tractor PTO shaft. Pull on driveline section to be sure
that yoke locks into place.
3. Hold driveline sections parallel to each other to
determine if too long. Each section should end
approximately 3” (76mm) short of reaching universal
joint shield on opposite section. If too long, measure
3” (76mm) back from universal joint shield and mark
on opposite section (Figure 4). Do this for both sec-
tions. DO NOT CUT UNTIL STEPS 4 AND 5 ARE
CHECKED.