Ariens 929000 - Manual (Page 68)

ENGINE SPEED AT FULL THROTTLE. Regulate travel
speed on hydrostatic models with the hydrostatic
control lever. Regulate travel speed on gear shift
models by selecting an appropriate gear. The power
requirement increases in dense, high grass condi­
tions. If travel speed of the tractor is too fast for
mowing conditions, the engine and thus the mower
will slow down reducing the cutting efficiency of the
mower. In some conditions, excessive FORWARD
travel speeds may cause the engine to stall and the
mower to plug or a drive belt to slip.
7. For any emergency or "panic" stops, depress
the clutch brake pedal on gear shift models or the
neutralizer and brake pedal on the hydrostatic
models.
NOTE: KEEP FOOT OFF PEDAL DURING NORMAL
OPERATION. NEVER USE PEDAL AND HYDROSTATIC
CONTROL LEVER SIMULTANEOUSLY AS THE PARTS
ARE INTER-CONNECTED AND THE LINKAGE COULD
BECOME DAMAGED OR MISADJUSTED. ON GEAR
SHIFT MODELS, BELT SLIPPAGE COULD OCCUR.
MOWER ADJUSTMENTS AND MAINTENANCE
A
BE CAREFUL; NEVER ATTEMPT TO SERVICE
OR MAKE ANY ADJUSTMENTS TO THE
MOWER WHILE THE ENGINE IS RUNNING.
WHEN SERVICING OR MAKING ADJUST­
MENTS; IT IS A GOOD PRACTICE TO USE THE
FOLLOWING PROCEDURE;
1. Disengoge implement power clutch.
2. Hydrostatic models — Place hydrostatic con­
trol lever in the "park-start" position and apply brake
lock. ^
Gear shift models — Place gear shift lever in first
gear and apply brake lock.
3. Lower the mower.
4. Stop engine and remove ignition key.
6. Disconnect spark plug wire.
ADJUSTING BLADE LEVEL AND PITCH
Proper leveling of the blades is essential in
obtaining a smodth, evenly cut lawn. Blade pitch is
correct when the front blade tips are slightly lower
than the rear blade tips. Improper pitch adjustment
will affect engine power requirements and can cause
uneven cutting.
Use the following procedure to adjust blade level
and pitch:
1. Check tire pressure and adjust as required
(front tires — 10 lbs.; rear tires — 6 lbs.)
2. Place tractor on a smooth level surface,
preferably a concrete slab or smooth floor.
3. Place cutting height adjustment lever. Figure
37, in the highest cutting position.
4. With the attachment lift lever, lower the
movver so the roller assembly firmly rests on the floor.
5. Rotate the blades until they are parallel to the
roller assembly as shown in Figure 39. Measure
distances A and B (from end of blade tips to the floor).
These distances should be equal. If they are not equal,
loosen roller assembly adjusting bolt C or D and pivot
the mower deck up or down until distances A and B
are equal with the roller resting firmly on the floor.
NOTE: If there are any indications of damage to
the mower deck, blades or blade spindles, measure
the blade tips at A and B, then rotate the blades 180
degrees and measure the opposite blade tip ends. If
the measurements vary more than 1 /8" on any blade,
see your Ariens dealer for service. If the variation is
not excessive, level the mower using the lowest
measurement from blade tip to ground at A and 6.
bolts 6. Tighten roller assembly mounting
securely.
7. Rotate the blades until they are perpendicular
to the roller assembly as shown in Figure 40.
8. Measure distances A (from both outboard tips
to the floor). Then measure distance B. The front
blade tip (distance B) should be 1 /8" less than the rear
blade tip (distance A). Loosen both front support
mounting bolts C and pivot front of mower "up" or
"down" until the front blade tip B is 1/8" closer to the
floor than the rear blade tips A.
i
Figure 40
CUTTING HEIGHT
The cutting height is adjustable to any of six
different positions by moving the cutting height
adjustment lever shown in Figure 37. Raise the lever
to decrease cutting height. Lower the lever to
increase cutting height.
MOWER DRIVE BELT REPLACEMENT
Constant tension is maintained on the drive belt
by a spring-loaded idler. Therefore, belt adjustment is
not required.
Figure 41 shows the correct belt rotating (with
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