leave a 1/16" blunt edge. Do not sharpen back side of blade. When replacing blades, do not substitute any bolt for the special Nylok blade bolt. The Nylock bolt is
NOTICE
■On mowers with white frames, the blade bolts have left hand threads.
Both 59 and 306 mowers use cup washers under blades. These washers will burn and lose their clamp- ing force if excess slippage occurs. Inspect and replace as necessary. The L306 mower incorporates a friction clutch disc which is designed to slip only when striking a solid object. Should blade slip during mowing, tighten by adding thin shim washers over bushing, between top cup washer and blade, until blades will hold desired load. Blade bolts should be torqued to 170
HOW TO SOLVE BELT PROBLEMS
Assemble as shown on mower decal. If not installed correctly, more twist will result than is allowable.
Belt whip is caused by belt misalignment unless mower is driven by a
Proper position of L59 and L306: Adjust mower for- ward and back to such a position that the rear
It is assumed that the mower is adjusted to run approx- imately level. If the front of the mower is down, the idlers will have to be raised. If the back of the mower is down, the idlers will have to be down further. Belts must be in proper alignment with sheave grooves as shown in Figure 4 and Figure 5.
PTO pulleys must be moved in or out to cause the belt to be in alignment with the idlers.
Belt Tension: Run belts very tight. Present belt designs are much stronger than we are accustomed to and will stand more tension. Slipping will heat and ruin a belt but tension is not harmful. You can minimize the amount of change in belt length as mower is raised and lowered by keeping the rear idlers adjusted to a low position.
Figure 3. Use of Straight Edge (Side View)
How to Align a Twisted Belt
Right: Inside edge of belt are approximately lined up with the sheave.
Figure 4
Wrong: Outer edge of belt appears to be in line.
Figure 5
29936 (Rev. 5/18/2007) | Operation 9 |
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