Adjustment of Belt Tension
Warning
Be sure to stop the engine before adjusting
the belts.
Important
Before making sure of belt tension, rotate the
belt several times.
If the belt becomes slack due to frequent use, it
may jump or slip.
In addition, if it is overtightened, it may wear
prematurely.
If necessary, adjust it, and always check the
belt for appropriate tension.
Adjustment of Pump Drive Belt
The belt tension is appropriate when there
is approximately 10 mm (0.39 in) of slack
when the belt is pressed lightly by finger at
98 N (10 kgf) around the center section
between the belt pulleys (arrow in the
diagram).
Tighten the high nut until there is no
clearance between the spring cover and the
tension fulcrum fitting, and then lock it in
place with the nut.
9
8
7
3
5
4
2
1
6
vottpg-001
Adjustment of Pump Drive Belt_001
1
High nut
2
Spring cover
3
Tension fulcrum fitting
4
Nut
5
Belt
6
Spring
7
Tension pulley
8
Engine pulley
9
Pump pulley
1.
2.
Adjusting the Brush Belt
Important
If the brush belt is incorrectly adjusted, the
brushes will not rotate properly.
Move the machine to level ground.
Depress the locking pedal while firmly
depressing the brake pedal to lock it.
Lower the brush frame and the bucket.
Stop the engine.
Remove the four bolts, and then remove
the belt cover.
2
1
lnomt3-001
Adjusting the Brush Belt_001
1
Bolt
2
Belt cover
Loosen the bolt, and then tighten the nut to
adjust the tension pulley.
2
3
1
lnomt3-002
Adjusting the Brush Belt_002
1
Nut
2
Bolt
3
Tension pulley
The V-belt tension is appropriate when the
belt slacks by approximately 10.0 mm (0.39
in) when you apply a force of 98 N (10 kgf)
with your finger to the belt at the middle
point.
1.
2.
3.
4.
5.
6.
7.
Maintenance
FS900
Maintenance
Page 6-9
Adjustment and Replacement
