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Questions? Call Toll Free at 1-800-737-2112 Copyright © 2009 MAT Engine Technologies, LLC
How to Replace the Drive Belt
Before you remove the drive belt, disconnect the wire from
the spark plug.
1. Remove the two fasteners that hold the rear of the shield
to the trimmer housing. (See Figure 19)
2. Remove the four fasteners that hold the front of the
shield and trimmer head to the trimmer housing.
3. Remove the shield and the trimmer head.
(See Figure 19).
4. Remove the “V” Pulley from the idler bracket.
(See Figure 20)
5. Raise the front of the trimmer housing and remove the
drive belt. Do not bend the belt guides. (See Figure 20)
IMPORTANT: Only use a replacement belt from the manufac-
turer. To order spare parts call us at 1-800-737-2112
6. To assemble the drive belt, reverse the above steps.
7. The torque specs are
• 22-40 foot-pounds [30-55 Nm] for the shield fasteners,
• 27-33 foot-pounds [36.6-44.7 Nm] for the drive pulley
mounting bolt, and
• 18-25 foot-pounds [24.4-34 Nm] for the trimmer head
bolts.
8. Check the routing of the drive belt. Make sure the drive
belt is inside of all belt guides and that the belt is not
twisted. (See Figure 20)
IMPORTANT: Test the drive system. Start the engine and
move the throttle control to the FAST position. Engage and
disengage the trimmer head several times. When disen-
gaged, make sure the trimmer head completely stops when
resting on the ground. If the trimmer head continues to
rotate, take the trimmer to an authorized Service Center.
Figure 20
TrimmerHousing
Drive Belt
Shield
TrimmerHead
“V” Pulley
Belt Guide
Belt Guide
Mounting Bolt
Drive Pulley
Belt Guide
Drive Belt
NOTE: View is bottom of the unit
Figure 19
Maintenance (Continued)
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WARNING
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