Lastec 721XR, Owner'S Manual

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Initial Set-Up
Deck Belts and Alignment
Initial Set-Up Lastec//092215 3-11
3
Be sure that the idler tensioning spring is properly installed and in good condition. If for
some reason this spring becomes loose, detached, or fatigued, the idler will not properly
tension the belts.
Clean entire deck area (under the belt cover) of all excess grease, oil, fuel, grass, or
debris before operating the Articulator. This will help prevent damage to the equipment,
fire hazard, and projectile hazards.
Be sure to replace the belt cover and hardware.
3.9 Deck Belts and Alignment
WARNING!

NEVER inspect, adjust, or change the deck drive belts while the tractor is running.

Always clean the entire deck (including under the belt covers) of all grease, oil, fuel,
grass or debris to prevent fire or projectile hazards.
CAUTION!

When cutting with new belts, do not over-power the Articulator within the first few
hours of operation. Listen for excessive belt slippage. Check belt tension after 2
hours of operation. Check all belt tension adjustment hardware after the first 8 hours
of operation.
Again, the overall life of the Articulator drive and deck belts is more greatly affected by the
attention given them within their initial 8 hours of use than at any other time. Properly
adjusted, the belts can perform over 1000 hours of service. Improperly adjusted, they can
fail within a few hours. Be aware that over 50% of the total belt stretch will occur within the
first few hours of use.
To access each belt, remove the belt cover hardware, and lift the belt cover from the
mower deck. Follow the procedures below in order to properly tension the deck belts:
1. Remove all belt covers.
2. Deflect the sides of each deck belt inward at its center point between the pulleys. Apply-
ing light pressure (approximately 10 lbs), you should be able to deflect the belt approxi-
mately 1/2' to 3/4" inward.
3. If you cannot deflect the belt at least 1/2" inward with 10lbs of pressure, loosen the belt
slightly. If you can deflect the belt more than 3/4" inward, tighten the belt slightly. To adjust
Warning
Caution