53
GVM-VAC
www.gvm-vac.com
Service Section
A
Figure #1
Figure #2
Figure #3
A
Figure #4
C
B
B
5.5 Belt Adjustment and Replacement Guide
Belt Removal
1. Make sure the leaf vacuum is not running and remove the battery cable from
the negative battery terminal to ensure that the unit cannot be accidentally
started.
2. Open the belt guard assembly to gain access to the belt and pulleys.
3.
Loosen the four motor mount bolts (Items A and B, figures #1 and #2) located
above the motor mount adjustment brackets.
4. To create slack in the belt, the motor assembly needs to be moved toward the
blower housing. Locate the adjustable motor mount nuts (C) at the rear of the
unit (figure #3). Use a 7/8” socket to turn the nuts counter-clockwise alter
-
nating between the left and right mounts. Move one side approximately two
inches then move the other side to keep the mounts from binding.
5. Continue moving the motor inward until the belt is loose enough to be re-
moved.
Belt Replacement
1. Place the belt around the two pulleys, aligning the grooves of the belt with the
grooves of the pulley.
2. The motor assembly needs to be moved back away from the blower housing
to tighten the belt. Using the adjustable motor mount nuts at the rear of the
unit (Item C, figure #3) turn one of the nuts clockwise to start moving the mo
-
tor assembly. Move the motor assembly approximately two inches then do the
same to the other side. Continue alternating between the two sides until the
belt is tight.
3.
IMPORTANT: Use a straight edge to make sure the pulleys are aligned (figure
#4).
4. If the pulleys are not aligned use either of the adjustable motor mount nuts to
compensate for the mis-alignments. Check the tightness at the center of the
belt between the two pulleys. The belt should depress approximately 1/2”.
5.
Tighten down the 2 bolts closest to the blower housing (Item A, figures #1 and
#2). Loosen the adjustable motor mount nuts (Item C, figure #3) by turning
counter-clockwise a couple of turns until the front 2 motor mount bolts (Item
B, figures #1 and #2) are competely straight. The motor assembly should not
move, if it does move then the bolts (Item A) were not tight enough and the
belt would need to be readjusted using the steps above. Once the bolts (Item
B) are straight tighten them down.
6. Close the belt guard assembly and secure it with the latches.
7. Re-attach the battery cable to the negative battery post.
8. Start the engine and increase the throttle to 750 RPM’s.
9. Engage the clutch, listening for any squealing from the belt. If the belt
squeals use the above directions to tighten the belt a little more.
10. After approximately 8 hours of use the new belt should be checked for proper
tightness in case the belt stretched.
Before opening the belt cover emove the negative bat-
tery cable to ensure unit can not be started.
Summary of Contents for GVM8000
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