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SECTION 4 - SERVICE
WARNING
Once blades are disengaged, they should come to a
complete stop in 7 seconds or less. If the blades
continue to rotate after 7 seconds, the electric
clutch must be checked. Replacement of electric
clutch may be necessary. Return machine to dealer
for replacement. DO NOT CONTINUE to operate
mower if blades fail to stop in 7 seconds.
4,1 ELECTRIC CLUTCH ADJUSTMENT
The Pro Hydro Mowers are equipped with an Electric Blade
Control. The cutter blades should STOP within 7 seconds
after the BLADE SWITCH is moved to "OFF" position. If
blade stopping time exceeds 7 seconds, check the clutch air
gap setting as follows:
1. With the Ignition Switch moved to "STOP" and the Blade
Switch moved to "OFF", locate the three air gap check
"SLOTS" as shown in Figure4.2.
ADJUST AIR GAP TO
BE .010 TO .012. ADJUSTING NUT
2. Before removing parts from the Hydraulic System, check
to make sure another part of the machine is not causing
the problem. Look for:
A. Loose Drive Belt.
B. Improperly set or bad Idler Pulley.
C. Loose or lost set screws and/or sheared Keys in Pulleys.
D. Pump Release loose.
E. Oil saturated Drive Belts.
F. Loose Drive Arms on Pumps.
4.2.2. PUMP/MOTOR REPLACEMENT
1. Should it become necessary b replace a Pump or Motor,
it is recommended that the affected Pump or Motor be
replaced as a set (both Pump and Motor). Generally,
when a Pump or Motor is bad, itwill affect the associated
Pump or Motor.
2. Relieve all pressure in the system and disconnect Spark
Plug(s). See Figure 4.3.
3. Replace the affected component(s).
TURN PRESSURE RELIEF
VALVE ON EACH PUMP
TO RELEIVE SYSTEM
PRESSURE.
CLUTCH FIGURE 4.2
2. Insert a feeler gauge into each of the three slots.
3. The clearance in each slot should be NO MORE than
.010to .012.
4. If adjustment is required, keep feeler gauge in slot and
turn the adjusting nut until the gap is correct.
5. Adjust all three slots.
4,2 HYDRAULIC SYSTEM ADJUSTMENTS
& SERVICE
4.2.1. GENERAL HYDRAULIC SERVICING
1. The Hydraulic Oil and Filter should be changed after the
initial 25 hours of use and after every 200 hours of use.
Drain both compartments of the hydraulic reservoir
completely. Replace filter using genuine Snapper
replacement only.
Fill reservoir using 1gallon of SAE10W-30 oil.
Operate machine for several minutes.
Check oil level. Reservoir is properly filled when level is 1-
1/2"from the top of the filler neck. See Figure 3.1.
NOTE: Always clean the Cap and surrounding area before
checking Oil Level or adding Oil. The Hydraulic Oil Tank is
FULL when the Oil is 1-1/2"from the top of the filler neck as
shown in Figure 3.1.
LEFT HAND
PUMP
FIGURE 4.3
RIGHT HAND
PUMP
4,2.3. HYDRAULIC PUMP BELT REMOVAL
1. STOP ENGINE! Loosen and remove Nut from under the
Spring Tensioner for Hydraulic Belt Idler Tensioner.
Remove Spring from Bolt. See Figure 4.4.
HYDRAULIC
PUMP BELT
BOLT /
SPRING TENSIONER
REMOVE NUT
FIGURE 4.4
18
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