Instructions to change the blade.
- Community Technician Level 2
Personal Protective Equipment (PPE):
• Sturdy, close-toed shoes must be worn at all times.
• Long hair, jewelry, and loose clothing must be tied back.
• Safety glasses and earmuffs must be worn while machines are running.
• A dust mask or a NIOSH certified respirator is recommended.
Do not do ___
Important point!
Warning
For more information on shop safety visit [applicable shop](applicable shop link) under "Safety."
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- Make sure the outer guide bearings are loose.
- Make sure the teeth are pointing in the right direction (See Figure 4).
- Place the blade around the wheels and between the guide bearings.
- Hold the blade in position and apply tension.
- Push the blade against the wheel flange.
- Tighten the blade until it is properly tensioned. A properly tightened blade will ring slightly when the back of the blade is plucked (like a string of an instrument).
- Adjust the outer guide bearings.
- Check for proper tracking (See Tracking Adjustment).
Proper tracking is achieved when the drive wheel and tracking wheel are aligned. A blade that is not tracking correctly can come off the blade wheels. Although adjustment is rarely required, tracking should be checked frequently.
- Raise the head. Open the wheel cover.
- Insert a piece of paper between the blade and the left side of the idler wheel.
- Let the blade grab the paper. Rotate the tracking wheel so the paper goes around the wheel.
- Refer to Figure 5 to determine if an adjustment is needed.
The tracking is adjusted by positioning the tracking wheel shaft.
The positioning is done with the socket head bolts.
- Loosen the two socket head bolts.
- Adjust the tilt with set screws. For correct tracking, refer to Figure 5. Turn 1/4 revolution at a time.
- Check the blade tension and adjust if necessary.
- Recheck the tracking.
- Once the proper position has been found, tighten the bolts securely.
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