1.Bolt
2.Splined bushing
3.Key
4.Drive pulley
5.Tractor PTO
Figure 21. Drive Pulley Installation
ATTACHING MOWER TO TRACTOR
Position mower under tractor. If a lifting device is not available, the mower frame is strong enough to back the tractor over mower. Use care to prevent damage to painted surface of mower. Place wood blocks in front of mower and behind tractor tires.
Drive forward over mower to remove from tractor.
MOWER ATTITUDE (FIGURE 22)
Position front of mower level with, or slightly below, the rear to provide closer cutting. Mowing with the front end high will produce ragged cuts with a scalloped look, excessive shredding and will require extra power.
For best mowing results, dimension "A" should not be more than 1/2" higher, and never lower, than dimension "B", except when using the leaf mulcher attachment.
Dimension "B" is set by adjusting casters, gauge wheels or lift chains.
Dimension "A" is set by raising or lowering push chan- nel arms in idler bracket.
Figure 22. Mower Attitude Adjustment
NOTICE
■Any adjustment to either dimension "A" or "B" will require adjustment to the other.
Check cutting height and attitude by placing a straight- edge along the outside edge of mower frame as shown.
Measure from bottom edge of straightedge at the front and rear at least 32" apart.
The front measurement should be approximately 1/2" lower than the rear.
The blade is
When checking cutting height, be sure to take mea- surements on both sides of mower.
Be sure mower is level from side to side using these measurements. This may be changed by adjusting the eyebolt in the rear lift lug. Cut off excess (approxi- mately 18") on each chain after mower is properly adjusted.
BELT
Belt Alignment
Belt alignment and tension should be set at the same time. Read both the alignment and tensioning sections before attempting either. Improper tension or alignment will affect belt life.
With mower level and cutting height set, check belt alignment.
Belt alignment is accomplished by adjusting idler pul- leys. First, align drive pulleys with idler pulleys. Check with a straightedge (see Figure 23). Alternately tighten bolts on taper lock bushing to secure drive pulley in proper alignment. Continue to alternate tightening sequence until assembly is tight and all bolts are torqued to 12
Alignment tolerances are shown in Figure 24 thru Fig- ure 29. The best idler alignment is shown in Figure 24
&Figure 27. However, it is not always possible to achieve. Alignment may be set within the tolerances given, but the left idler must always be at least 1" higher than the right.
51642 (Rev. 11/9/2007) | Assembly 27 |
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