Specifications

17
III. MAINTENANCE
C. V-Belts
Warning: Never make adjustments to belts or pulleys while
engine is running!
1. The best tension for a belt drive is the lowest tension at
which the belts will not slip under full load.
2. Simply take up the drive until the belts are snug in the
grooves. Run the drive for about 15 minutes to "seat" the
belts. Then impose the peak load. If the belts slip tighten
them until they no longer slip at peak load.
3. Remember too much tension shortens belt and
bearing life!
4. Check the belt tension frequently during the first day of operation. Check
the belt tension periodically thereafter and make any necessary
adjustments.
5. The two most common causes of misalignment are shown in the drawing.
a). The engine drive shaft and the blade shaft are not parallel.
FIGURE ONE
b). The pulleys are not located properly on the shafts.
FIGURE TWO
6. To check alignment , all you need is a steel straight edge .
7. Line up the straight edge along the outside face of both pulleys as shown
in the drawing.
8. Misalignment will show up as a gap between the pulley face and the
straight edge.
9. Make sure that the width of the outside land is equal on both pulleys.
FIGURE 1
FIGURE 2