309.002 - STIHL TS 400 Cutting Saw.pdf

Fresno City Fire Department 300 Training and Equipment Manual SECTION 309.002 STIHL TS 400 CUTTING SAW PURPOSE The purpose of this policy is to provide instruction to Fresno Fire Department (FFD or Department) members on the proper use and maintenance of the Stihl TS 400 cutting saw. APPLICATION Th...

Fresno City Fire Department 300 Training and Equipment Manual SECTION 309.002 STIHL TS 400 CUTTING SAW PURPOSE The purpose of this policy is to provide instruction to Fresno Fire Department (FFD or Department) members on the proper use and maintenance of the Stihl TS 400 cutting saw. APPLICATION The Stihl TS 400 cutting saw, when equipped with the proper blade, can be used for a variety of tasks on an emergency scene, including cutting most metals, masonry, wood-based materials, plastics, rubber, and glass. OPERATIONAL POLICY This section intentionally left blank. OPERATIONAL GUIDELINE Safety Precautions: • Always wear the appropriate personal protective equipment when using the saw. This includes full turnouts, helmet, gloves, and eye protection. • Never set the saw down, shift hands, or hand it to another person until the saw is at idle speed. • Ensure all personnel not in control of the saw place themselves a significant distance away while in use. The Stihl TS 400 cutting saw is capable of dislodging and throwing objects such as nails, small rocks, and blade teeth a considerable distance, especially to the front of the saw. Effective Date: March 2009 Current Revision Date: 9/22/2022 Next Revision (1) Date: 9/22/2024 Evan Sutliff, Fire Captain Section 309.002 Page 1 of 7 (Figure 1) PROCESS Maximum cutting efficiency is obtained by pulling rather than pushing the saw through the material to be cut. 1. Drive Belt Tensioning: The Stihl TS 400 saw is driven by a two-cycle gas engine through a centrifugal clutch and V-belt drive. This drive system prevents blade breakage by allowing the belt to slip should the blade become bound in the cut. Proper belt tensioning is critical to smooth operation. This saw is equipped with an automatic spring-loaded V-belt tensioning device. This feature is engaged whenever the tensioning nut arrow (towards the rear of the cast arm) points away from the “O” printed on the cast arm. By twisting the nut counter-clockwise, pointing the arrow towards the “O”, tension on the arm is relieved. (Figure 2) Effective Date: March 2009 Current Revision Date: 9/22/2022 Next Revision (1) Date: 9/22/2024 Evan Sutliff, Fire Captain Section 309.002 Page 2 of 7 a. Checking the Belt Tension: i. b. Rotate the blade in the direction of travel. If the blade “kicks back”, the belt is tensioned correctly. Adjusting the Belt Tension: i. Loosen the three hexagon bolts on the V-belt guard. ii. Relieve pressure on the arm using the tension nut (Rotate counterclockwise). iii. Re-apply the pressure by turning the tension nut clockwise away from the “O”. iv. The V-belt is automatically tensioned by the force of the spring. v. Retighten the hexagon bolts. vi. Adjust the blade guard. 2. Fueling: The 2-cycle engine requires TruFuel from the 50:1 fuel-oil mix container. 3. Care and Maintenance: a. Weekly Check: i. Check the fuel level. (See Figure 3). ii. Check the blade for security and proper rotation. iii. Check the belt tension. iv. Check for cleanliness. v. Start the engine and check for smooth operation at all speeds. Effective Date: March 2009 Current Revision Date: 9/22/2022 Next Revision (1) Date: 9/22/2024 Evan Sutliff, Fire Captain Section 309.002 Page 3 of 7 (Figure 3) b. After Use Check: i. Clean dust and debris from saw. ii. Check the blade. iii. Check the blade belt tension. iv. Check the blade guard for security and proper positioning. v. Refusal as necessary. 4. Saw Blades: The Stihl saw should be equipped with a Klingspor DT900 All Cut Rescue Diamond blade. This blade is a directional blade and should be installed with the label facing the blade guard. The all cut rescue blade has the capabilities of cutting most metal, masonry, wood-based materials, plastics, rubber, and glass. The Stihl TS400 should not be equipped with a carbide tooth blade. 5. Arbor Size: The Stihl TS 400 has a 20mm arbor. A brass spacer should be stored in the saw box to allow a blade to be adapted for 1-inch to 20mm, these arbor spacers can be procured from the Fire Shop parts. The spacer allows the saw to be equipped with 1-inch and 20mm blades. 6. Blade Care and Replacement: a. Klingspor DT900 All Cut Rescue Blade: i. Clean with soap and water. ii. Monitor for stress cracks. Effective Date: March 2009 Current Revision Date: 9/22/2022 Next Revision (1) Date: 9/22/2024 Evan Sutliff, Fire Captain Section 309.002 Page 4 of 7 Note: For prolonged cuts, use fine water spray to keep the blade cool. iii. iv. Check to make sure blade is flat (not twisted) by removing and placing on a flat surface. Blades can be procured through PS Trax, Fire Shop parts. 7. Starting/Stopping: This saw is equipped with a three-position control lever (Off/Run/Start) and a throttle trigger interlock. The “Start” position on the control lever and the trigger lock are used in conjunction to aid in starting the saw. With the trigger interlock set, the control lever can remain in the “Start” position and then spring to “Run” once started. (Figure 4) The saw also has a three-position choke lever and a decompression valve. The decompression valve automatically disengages upon starting. The choke lever needs to be manually disengaged. (Figure 5) 8. Cutting: • • Be aware of reactive forces, especially when cutting with the front portion of the wheel. Throttle up to full rpm, begin cutting and continue at full speed. Effective Date: March 2009 Current Revision Date: 9/22/2022 Next Revision (1) Date: 9/22/2024 Evan Sutliff, Fire Captain Section 309.002 Page 5 of 7 • If possible, avoid standing in direct line with the blade. • Be aware of pinching or twisting the blade. 9. Changing the Mounting – Inboard Versus Outboard: This saw can be changed from an inboard mount to an outboard mount in the field using the supplied wrench tool. The saw is to be kept in service in the outboard configuration. a. Steps to Switch Mounting: i. Turn the tension nut to “0”. ii. Remove the three hexagon bolts. (See Figure 6). iii. Remove the V-belt pulley and guard assembly with blade. (See Figure 7). (Figure 6) (Figure 7) iv. Reposition the handle by removing the two handle screws. Effective Date: March 2009 Current Revision Date: 9/22/2022 Next Revision (1) Date: 9/22/2024 Evan Sutliff, Fire Captain Section 309.002 Page 6 of 7 v. Fit the guard and pulley assembly in new position. vi. Loosely screw in the three hexagon bolts. vii. Turn the tension nut to re-apply tension. viii. Tighten the three hexagon bolts. INFORMATION Specifications: Engine: Blade Speed: Weight: Fuel Capacity: Depth of Cut: Arbor Size: 2-Stroke, 4.4 hp, 3.9 Cu. Inch (Max. Spindle Speed) 5,350 rpm 20 Pounds 1.39 US Pints 4 to 4.5 Inches 20 mm DEFINITIONS This section intentionally left blank. CROSS REFERENCES STIHL TS 400 Instruction Manual https://s3.amazonaws.com/tsresources.targetsolutions.com/D98C4688-BE40-F6437F26-81253BE3654F.pdf Effective Date: March 2009 Current Revision Date: 9/22/2022 Next Revision (1) Date: 9/22/2024 Evan Sutliff, Fire Captain Section 309.002 Page 7 of 7