Form No. 3374-363 Rev A CS-1 and CS-2 Concrete Saw Model No. 68045—Serial No. 313000001 and Up Model No. 68046—Serial No. 313000001 and Up G019180 Register at www.Toro.com.
Introduction WARNING CALIFORNIA Proposition 65 Warning This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This machine is designed to flat saw asphalt and concrete. It is not intended to cut wood any other material other than asphalt and concrete. Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage.
Safety Improper use or maintenance by the operator or owner can result in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the safety alert symbol , which means: Caution, Warning, or Danger—personal safety instruction. Failure to comply with the instruction may result in personal injury or death. Figure 2 1. Safety alert symbol This manual uses 2 other words to highlight information.
• Never let children or untrained people operate or service • • Look behind and down before backing up to be sure of the equipment. Local regulations may restrict the age of the operator. The owner/user can prevent and is responsible for accidents or injuries occurring to himself or herself, other people or property. a clear path. • Keep pets and bystanders away. • Use care moving the machine between job sites. Slow down when and use caution when making turns and when crossing roads and sidewalks.
• Keep hands and feet away from moving parts. If possible, – Never refuel the machine indoors. do not make adjustments with the engine running. – Never store the machine or fuel container inside where there is an open flame, such as near a water heater or furnace. • Keep all parts in good working condition and all hardware tightened. Replace all worn or damaged decals. • Keep nuts and bolts tight.
00 00 00 00 00 00 00 00 00 00 00 00 125–4922 125–4925 1. Cutting/dismemberment hazard of hand, circular blade—stop the blade; keep hands away from moving parts; keep all guards in place. 1. Warning—read the Operator’s Manual. 4. Raise blade 2. Warning—keep hands away from moving parts; keep all guards in place. 5. Lower blade 3. Warning—wear eye, head, hearing, and respiratory protection. 125–4920 1. Engine—run 8.
Product Overview 20 19 18 13 12 1 1 11 2 3 5 16 15 4 5 6 4 6 17 2 3 10 14 13 7 7 8 8 9 G019190 9 Figure 3 Overview (Model 68045) 1. Air filter cover 8. Blade guard 2. Fuel tank cap 9. Saw blade 3. Engine switch 10. Belt guard 4. Oil filler cap/dipstick 11. Handle bar 5. Oil drain bolt 6. Belt tension bolt 12. Elevation crank 13. Operator panel 10 11 12 G019187 Figure 4 Overview (Model 68046) 7. Forward pointer 1. Operator panel 11. Forward pointer 2. Throttle lever 3.
Engine Controls Controls Become familiar with all the controls (Figure 5, Figure 6, and Figure 7) before you start the engine and operate the machine. Operator Panel (Model 68045) 1 1 4 2 3 4 5 2 3 G019199 6 Figure 5 Operator Panel (Model 68045) 1. Index hole 2. Water valve handle G019202 Figure 7 Engine Controls (Models 68045 and 68046) 3. Water connector 4. Elevation crank 4. Throttle lever 5. Recoil start handle 6. Engine switch 1. Choke lever 2. Fuel valve lever 3.
Choke Lever The choke lever (Figure 8) is required when starting a cold engine. Before pulling on the recoil starter handle, move the choke lever to the closed position. Once the engine is running, move the choke lever to the open position. Do not use the choke if the engine is already warmed up or the air temperature is high. Throttle Lever (Model 68045) OFF ON The throttle lever (Figure 8) controls the speed (RPM) of the engine. It is located next to the choke lever.
Specifications described above must all be set correctly for the engine to start. Note: Specifications and design are subject to change without notice. Oil Alert System Model 68045 The Oil Alert system is designed to prevent engine damage caused by an insufficient amount of oil in the crankcase. Before the oil level in the crankcase can fall below a safe limit, the Oil Alert system will automatically stop the engine (the engine switch will remain in the ON position).
Adjusting the Handle Bar (Model 68046) Operation Important: Before operating, check the fuel and oil level, and remove debris from the machine. Also, ensure that the area is clear of people and debris. You should also know and have marked the locations of all utility lines. Raising and Lowering the Handle Bar 1. Locate the bolts that secure the handlebars to the back of the console (Figure 12). Note: Determine the left and right sides of the machine from the normal operating position.
• Ensure that the blade specification and size matches the cutting application. Check with the blade manufacturer for the proper application. 1 • Ensure that the blade is not damaged with any of the following conditions: – Worn core 2 – Cracked core – Missing segments – Worn arbor hole G019213 – Worn drive-pin hole Figure 14 Arbor Wrench Storage Removing the Blade 1. Wrenches 1. Raise the saw blade to the Start Elevation; refer to step C in Changing Cut Depth (page 14). 2. Storage bracket 6.
7 6 1 2 B. Ensure that the machine surfaces are cool. C. Disconnect the spark plug (Figure 13). D. Remove the 2 arbor wrenches from the storage bracket at the back-left side of the operator panel; refer to Removing the Blade (page 12). 3 4 E. Open the forward section of the blade guard; refer to Removing the Blade (page 12). F. Inspect the outer collar, inner collar, drive pin, and arbor for damage. Clean the collar clamping surfaces, drive pin, and arbor with a clean rag. G.
H. Place one arbor wrench on the flats of the inner collar and place the other wrench on the arbor nut. Tighten the arbor nut by rotating it clockwise. 3. Lower the front blade guard section, stow the arbor wrenched in storage bracket, and connect the spark plug. 11 10 9 1 4. Start the engine and allow the machine to run at full throttle for 30 seconds; refer to Starting the Engine (page 19). 5. Stop the engine.
Locking the Blade Elevation Note: The Start Elevation is when the saw blade is at +11 mm (+7/16 inch) above the job-site surface. Raise the saw blade to the start elevation when moving the machine, maintaining the machine, and starting and stopping the engine The blade elevation can be locked when maintaining the blade elevation is desirable. Lock the blade elevation as follows: 1. Raise or lower the saw blade by rotating the elevation crank until the desires blade elevation is achieved (Figure 18). 2.
1 1 3 2 2 G019226 Figure 20 Pointer Alignment (Model 68045) 1. Pointer 2. Mason’s line 7 3. Saw-blade core 6 • Model 68046—Align the front pointer by doing 3 the following: 5 4 A. Loosen thumbscrew that secures the forward pointer to the pointer fork (Figure 21). G019231 Figure 22 Rear Pointer Alignment (Model 68046) 1 2 1. Forward pointer 5. 3–6 mm (1/8–1/4 inch) 2. Saw blade 3. Rear pointer 6. Thumbscrew 7. Console 4. Chalk line 4 3 5 2.
DANGER WARNING In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property. Gasoline is harmful or fatal if swallowed. Long-term exposure to vapors can cause serious injury and illness. • Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any gasoline that spills. • Keep face away from nozzle and gas tank or conditioner opening. • Avoid prolonged breathing of vapors.
Note: SAE 10W-30 is recommended for general use. Other viscosities shown in the chart may be used when the average temperature in your area is within the indicated range. Checking the Engine Oil Level Important: Running the engine with low oil level can cause engine damage. This type of damage is not covered by warranty. The engine is equipped with an oil alert system that will automatically stop the engine before the oil level falls below the safe limit. 1.
1 Note: On model 68046 machines, do not use the throttle control lever on the engine. 4. On the engine, move the lever of the fuel valve to the On position—all the way to the right; refer to Fuel Valve (page 8). 5. To start a cold engine, move the choke lever to the Closed position—all the way to the left; refer to Choke Lever (page 9). Note: To restart a warm engine, leave the choke lever in the Open position (all the way to the right). 6.
Cutting the Job-Site Surface 1. Raise the saw blade to the Start Elevation; refer to Adjusting the Cutting Depth (page 14) CAUTION 2. Ensure that the choke lever is in the Off position; refer to Choke Lever (page 9). • Operate the machine with the safety guards in place and in good condition. 3. Do the following to stop the engine: • Model 68045 • Do not operate the machine with a blade diameter larger than the specified capacity; refer to Specifications (page 10). A.
1 2 2 3 1 3 G019273 4 2 Figure 28 Water Shutoff Valve and Connector 1. Off position 3. Shutoff valve and coupling 2. On position 4. Water supply hose 3 4 G019280 Figure 29 Forward Pointer (Models 68045 and 68046) 3. Ensure that the handle for the shutoff valve is in the Off position (Figure 28). 4. Align the hose with the coupling and thread the coupling and hose together (Figure 28). 1. Model 68045 3. Extended position 2. Stowed position 4. Model 68046 5. Tighten the coupling. 3.
Changing the Cutting Position Important: For cuts deeper than 102 mm (4 inch), several cutting passes should be made in 38 mm (1–1/2 inch) to 51 mm (2 inch) steps until the desired cut depth is reached. Use this procedure to configure a machine with the blade on the right side to a machine with the blade on the left side, or change the saw blade position from the left side to the right. 1. Unlock the blade elevation by pushing the elevation crank down to disengage the index pin.
2. Remove the water line from the barbed fitting. Note: Remove the hose clamp from the water line and retain it. 3. Route the water line as follows: • Model 68045—Route the water hose to the opposite side of the machine. • Model 68046 A. Push the water hose in through the opening at the bottom-forward corner of the console (Figure 31). 1 4 3 2 2 1 G019285 Figure 32 Blade Guard Removal 1. Forward bolt and washers 2. Blade guard B.
Important: Right-hand blade installation—ensure that the arrow on outside of the blade guard indicates clockwise rotation. A. Remove the bolt, washers, and nut that secure the pointer to the mounting tab on base of the machine (Figure 35). A. Position the blade guard at the opposite side of the machine. B. Align the cutout in the blade guard with the arbor. C. Align the mounting holes of the blade guard with the holes in the base of the machine. D.
Transporting the Machine Prepare the Machine for Transport 1. Remove the saw blade. 2. Rotate the elevation crank counterclockwise to lower the machine to the lowest elevation height. 3. Move the lever on the fuel valve to the Off position—all the way to the left; refer to Fuel Valve (page 8). 3 2 4. Raise and secure the forward pointer to the stowed position (Figure 29). 1 5. Model 68046—stow the rear pointer (Figure 22).
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Important: The machine may be tipped backward or on its side to facilitate access for cleaning or service, but no longer than 2 minutes. If the machine is held in this position for too long, the engine can be damaged by gasoline draining into the crankcase. Should this happen, perform an extra oil change on the engine.
Lubrication Lubricate the Elevation Screw Service Interval: Before each use or daily Greasing the Machine 1. Using a rag, wipe the elevation screw and tilt arm clean of excess lubricant, dirt, and dust. Service Interval: Before each use or daily 1 Grease Type: General-purpose grease. 2 1. Grease the tilt bearing and arbor bearing blocks by doing the following: A. Elevate the blade to its highest position. B.
Engine Maintenance 5. Align the air intake screen of the cyclone housing with the opening in the air filter cover. Carefully assemble the cyclone housing the filter housing (Figure 39). Servicing the Air Filter Note: Ensure that the slot in the cyclone cover that is adjacent the air intake screen is aligned with the tab in the bottom of the air filter cover; Do not use force; align it in place. 6. Secure the cyclone housing to the air filter cover with the screws removed in step 1 (Figure 39).
D. Changing the Engine Oil Gently wind the filter in an absorbent cloth and squeeze out excess oil. Service Interval: After the first 50 hours/Monthly (whichever comes first)—Change the oil. 3. Remove the wing nut on top of the air filter and remove the paper filter (Figure 40). Every 100 hours/Every 6 months (whichever comes first)—Change the oil. 4. Tap the air-filter element against a fixed surface several times to remove dirt.
1 30 5W–30 · 10W–30 0 -20 20 -10 40 0 80 60 10 20 100°F 30 40°C G019298 Figure 42 Recommended Oil Viscosity 1. Oil viscosity range for ambient operating temperatures 5 1 Note: SAE 10W-30 is recommended for general use. Other viscosities shown in the chart may be used when the average temperature in your area is within the indicated range. 2 1. Level the engine by raising it with the elevation crank; refer to Adjusting the Cutting Depth (page 14). 3 2.
3. Pull the spark plug wire off the terminal of the spark plug (Figure 44). 1 2 Figure 44 3 4 Figure 43 Sediment Cup and Fuel Filter 1. Fuel valve (Off) 3. Fuel filter 2. O-Ring 4. Sediment cup 2. Wire 1. Spark plug G019333 4. Clean around the spark plug. 5. Rotate the spark plug counterclockwise using a 20 mm (13/16 inch) spark plug wrench to remove the plug and sealing washer. Checking the Spark Plug Note: Do not clean the O-ring in solvent. 6.
Servicing the Spark Arrester 2. If the measured air gap is not within the specified air gap range, do the following: Service Interval: Every 100 hours/Every 6 months (whichever comes first)—Clean the spark arrester. A. If the gap is too small, carefully bend the side electrode away from the center electrode until the gap between the electrodes is within the measured air gap range. B.
Belt Maintenance Servicing the Drive Belts 1 G019332 Service Interval: Every 40 hours—Check the pulley security and alignment, and the drive belt tension. Replace the damaged belts as needed. 2 Every 2 years—Replace all drive belts. Replace the belts if any shows any signs of wear, cracks, glazing, or damage. Figure 47 Cleaning the Spark Arrester 1. Spark arrester screen 2. Brush Removing the Belt Guard Note: Be careful not to damage the screen. 1.
Checking the Pulleys and Drive Belts (Figure 50). If the pulley is loose on the arbor, align and secure the pulley; refer to step 3 in Aligning the Pulleys (page 36). 1. Remove the belt guard; refer to Removing the Belt Guard (page 33). 2. Check that the arbor pulley is centered in the opening in the base of the machine. If the arbor pulley is misaligned, refer to step 3 in Aligning the Pulleys (page 36) (Figure 49). 1 5 2 6 3 7 4 8 G019307 Figure 49 Pulley Alignment 1.
Adjusting the Drive Belt Tension 1. Remove the belt guard; refer to Removing the Belt Guard (page 33). 2. Loosen the engine mounting hardware as follows: • Model 68045 A. Elevate the blade to its highest position. B. 1 Loosen the bolts, washers, and nuts that secure the engine to the base of the machine (Figure 52). 2 G019310 Figure 51 Measuring Belt Tension 1 1. Straight edge B. 2. Deflect 5 mm at 2 kg (.19 inch at 4.
Aligning the Pulleys 1. Remove the belt guard; refer to Removing the Belt Guard (page 33). 1 1 2. Reduce the belt tension; refer to adjust the belt tension in step 4 in Adjusting the Drive Belt Tension (page 35). 3. If the arbor pulley is misaligned in the opening of the base of the machine or loose on the arbor (Figure 49), do the following: A. Pull the recoil start handle of the engine until the setscrew hole in the center V-belt groove of the pulley is accessible (Figure 54).
A. While supporting the arbor shaft, remove the bolts, washers, and nuts that secure the arbor bearing blocks to the bottom side of the base of the machine (Figure 56). 1 4 1 1 11 3 10 1 2 2 G019314 3 Figure 55 Drive-shaft Pulley Alignment 1. Alignment points 3. Drive-shaft pulley 2. Straight edge 4. Arbor pulley 8 5. If the drive-shaft pulley is not aligned do the following: 4 A.
Saw Blade Maintenance Checking the Condition and Function Service Interval: Before each use or daily—Check the condition of the saw blade condition for wear and damage. Important: The wear and loss of the saw-blade segments can significantly impair the efficiency and performance of the machine. Therefore, it is important to make frequent checks of the condition of all of segments and replace the blade if the segments are worn excessively or damaged.
Blade Troubleshooting Table (cont'd.) Blade Will Not Cut G019323 Cracked Core G019328 Undercutting the Core Bond / matrix is too hard for material being cut. Install the proper blade per the blade manufacturer recommendation. Blade has become dull. Dress or sharpen by cutting softer abrasive material to expose the diamonds. Failure to initially break-in a new blade on the specific material being cut. Beak-in the blade on the material to be cut. Bond / matrix is too hard for material being cut.
Cleaning Storage Cleaning the Machine Storing the Machine For storage over 30 days, prepare the unit as follows: Regular cleaning and washing will increase the life span of the machine. Clean the machine after each use, before the dirt hardens. 1. Remove dirt and grime from the external parts of the entire unit, especially the engine. Clean dirt and sawdust chips from the outside of the engine cylinder head fins and blower housing.
screw; refer to Greasing the Machine (page 27) and Lubricate the Elevation Screw (page 27). 9. Check and tighten all bolts, nuts, and screws. Repair or replace any part that is damaged. 10. Paint all scratched or bare metal surfaces. Paint is available from your Authorized Service Dealer. 11. Store the unit in a clean, dry garage or storage area. 12. Cover the unit to protect it and keep it clean.
Troubleshooting Note: Saws with the Honda GX series engines are equipped with the Oil Alert® System. Oil Alert® is a registered trade mark of HONDA GIKEN KOGYO KABUSHIKI KAISHA CORPORATION. Problem The engine will not start. Possible Cause 1. On the operator panel, the engine switch is in the Stop position 1. Press the engine switch to the Run position. 2. The fuel valve is Off. 2. Move the fuel-valve lever to the On position. 3. Open the choke when starting a hot engine. 4.
Notes: 43
Concrete, Masonry, and Compaction Equipment The Toro Warranty A limited warranty (see warranty periods below) Conditions and Products Covered The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly warrant your Toro Concrete, Masonry, and Compaction Equipment Products listed below to be free from defects in materials or workmanship. This warranty covers the cost of parts and labor, but you must pay transportation costs.
