6
Revision 03/05/07
BFS SERIES
Maintenance
Place the transmission in neutral by moving the transmission control
arm back and forth while manually rotating the transmission pulley.
When the pulley spins freely and no movement of the drive chain is
observed, the neutral position has been obtained.
Tighten the cable clamp.
Replace the v-belts and properly adjust v-belt tension by
repositioning engine and tightening the mounting bolts.
Reinstall the belt guard.
6. V-Belts
This machine is equipped with two heavy duty V-belts which are
tensioned properly at the factory. These must be re-tensioned after
the first half day of operation and periodically thereafter. Adjust to the
original tension as set at the factory, which is approximately 1/4 inch
of deflection of the center of the belt halfway between the pulley on
the motor and the pulley on the blade shaft.
To adjust belt tension, first remove the belt guard. With the
belt guard removed, loosen motor mount bolts. Loosen the
lock nut and adjust set bolt on the motor tension adjuster
until the required belt tension is achieved. Retighten the
motor mounting bolts.
The two most common causes of misalignment
are shown in the drawings.
Figure 1 - The engine drive shaft and the blade shaft
are not parallel.
Figure 2 - The pulleys are not located properly on the
shafts.
Never make adjustments to belts or pulleys while engine is running.
DO NOT OVER TENSION as damage to belts and bearings may
occur. Belts that are too loose may slip, resulting in short life and
loss of power to the blade shaft. If any belts are worn or damaged,
replace the complete set.
The motor mounting plate must be maintained parallel to the frame.
Make sure all lock nuts are tightened and retighten the bracket bolts.
NOTE
:
See parts list for further v-belt specific information.
6.8.5
6.8.6
6.8.7
6.8.8
Note: gap between steel
straight edge and sheave
steel straight edge
Fig.1
Fig. 2
Engine
Shaft
CAUTION
