Form No. 3441-196 Rev B 2000 Series HDX SD 132cm Riding Mower Model No. 77292TE—Serial No. 400000000 and Up Register at www.Toro.com.
This product complies with all relevant European directives; for details, please see the separate product specific Declaration of Conformity (DOC) sheet. Please refer to the engine manufacturer’s information included with the machine. Gross or Net Torque: The gross or net torque of this engine was laboratory rated by the engine manufacturer in accordance with the Society of Automotive Engineers (SAE) J1940 or J2723.
Contents Replacing the Emissions-Air Intake Filter.............................................................. 41 Fuel System Maintenance ................................... 42 Replacing the Fuel Filter ................................... 42 Servicing the Fuel Tank..................................... 42 Electrical System Maintenance ........................... 43 Electrical System Safety ................................... 43 Servicing the Battery.........................................
Safety This machine has been designed in accordance with EN ISO 5395. General Safety This product is capable of amputating hands and feet and of throwing objects. Always follow all safety instructions to avoid serious personal injury. • Read and understand the contents of this Operator’s Manual before starting the engine. • Keep bystanders and children away. • Do not allow children or untrained people to operate or service the machine.
Slope Indicator g011841 Figure 3 You may copy this page for personal use. 1. The maximum slope you can operate the machine on is 15 degrees. Use the slope chart to determine the degree of slope of hills before operating. Do not operate this machine on a slope greater than 15 degrees. Fold along the appropriate line to match the recommended slope. 2. Align this edge with a vertical surface, a tree, building, fence pole, etc. 3.
Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or missing. decaloemmarkt Manufacturer's Mark decal106-5517 1. Indicates the blade is identified as a part from the original machine manufacturer. 106-5517 1. Warning—do not touch the hot surface. decalbatterysymbols Battery Symbols Some or all of these symbols are on your battery. 1. Explosion hazard 6.
decal112-3858 112-3858 1. Read the Operator's Manual. 3. Remove the key before adjusting the height of cut. 2. Read the Operator's Manual before performing maintenance. 4. Height-of-cut settings decal116-8588 116-8588 1. Read the Operator’s Manual. 2. Rotate the drive release knob to loosen, slide the knob, and tighten. decal112-9028 3. Push the machine. 112-9028 1. Warning—stay away from moving parts; keep all guards and shields in place. decal109-6014 109-6014 1.
decal117-1194 117-1194 1. Belt routing 2. Engine decal126-7816 126-7816 1. Height of cut decal117-3848 117-3848 1. Thrown object hazard—keep bystanders away. 2. Thrown object hazard, raised deflector—do not operate without the deflector, discharge cover, or grass collection system in place. 3. Cutting/dismemberment hazard of hand or foot, mower blade—stay away from moving parts; keep all guards and shields in place. decal126-8172 126-8172 decal126-4363 1. Parking brake disengaged 126-4363 1.
decal126-9939 126-9939 1. Read the Operator’s Manual. 2. Fill to the bottom of the filler neck; warning—do not overfill the tank. decal136-8992 136-8992 3. Fuel—empty 1. Fuel—full 2. Fuel—50% decal136-9024 136-9024 4. Grease point 1. Read the Operator’s Manual before performing maintenance. 2. Operating hours 5. Hydraulic-fluid level 3. Engine-oil level 6. Tire pressure decalptosymbols PTO Switch Symbols 1. PTO–disengage 2. PTO–engage decaltransportlock Transport Lock 1. Height of cut 9 2.
decal126-6183 decal126-6194 126-6183 126-6194 1. Traction control 2. Fast 3. Slow 1. Traction control 2. Fast 3. Slow 4. Neutral 5. Reverse 4. Neutral 5. Reverse decal136-1305 136-1305 1. Fast 2. Continuous-variable setting 4. Choke 5. Work light (optional) 3. Slow 6.
decal136-1720 136-1720 1. Cam lock 2. Cam unlock decal132-0871 132-0871 Note: This machine complies with the industry standard stability test in the static lateral and longitudinal tests with the maximum recommended slope indicated on the decal. Review the instructions for operating the machine on slopes in the Operator’s Manual as well as the conditions in which you would operate the machine to determine whether you can operate the machine in the conditions on that day and at that site.
Key Switch Product Overview The key switch, used to start and shut off the engine, has 3 positions: OFF, RUN, and START . Refer to Starting the Engine (page 25). Choke Control Use the choke control to start a cold engine. Throttle Control The throttle controls the engine speed, and it has a continuous-variable setting from the SLOW to FAST position (Figure 5). Blade-Control Switch (Power Takeoff) g227688 Figure 4 1. Height-of-cut deck-lift pedal 7. Shock assembly 2. Height-of-cut positions 8.
Battery-Indicator Light If you turn the key switch to the ON position for a few seconds, the battery voltage displays in the area where the hours are normally displayed. The battery light turns on when the key switch is turned on and when the charge is below the correct operating level (Figure 6). Motion-Control Levers Use the motion-control levers to drive the machine forward, reverse, and turn either direction (Figure 4).
Specifications Note: Specifications and design are subject to change without notice.
Fuel Safety Operation • Fuel is extremely flammable and highly explosive. Note: Determine the left and right sides of the machine from the normal operating position. Before Operation Before Operation Safety General Safety • Do not allow children or untrained people to operate or service the machine. Local regulations may restrict the age of the operator. The owner is responsible for training all operators and mechanics.
Adding Fuel Note: Do not fill the fuel tank completely full. The empty space in the tank allows the fuel to expand. Recommended Fuel • For best results, use only clean, fresh (less than 30 days old), unleaded gasoline with an octane rating of 87 or higher ((R+M)/2 rating method). • Ethanol: Gasoline with up to 10% ethanol (gasohol) or 15% MTBE (methyl tertiary butyl ether) by volume is acceptable. Ethanol and MTBE are not the same. Gasoline with 15% ethanol (E15) by volume is not approved for use.
Using the Rollover-Protection System (ROPS) WARNING To avoid injury or death from rollover, keep the roll bar in the fully raised, locked position and use the seat belt. Ensure that the seat is secured to the machine. WARNING There is no rollover protection when the roll bar is in the down position. • Lower the roll bar only when absolutely necessary. • Do not wear the seat belt when the roll bar is in the down position. g036746 • Drive slowly and carefully.
Using the Safety-Interlock System Test the safety-interlock system before you use the machine each time. If the safety system does not operate as described below, have an Authorized Service Dealer repair the safety system immediately. WARNING If the safety-interlock switches are disconnected or damaged, the machine could operate unexpectedly, causing personal injury. • Do not tamper with the interlock switches.
Positioning the Seat Adjusting the Rear-Shock Assemblies The seat can move forward and backward. Position the seat where you have the best control of the machine and are most comfortable (Figure 10). The MyRide™ suspension system adjusts to provide a smooth and comfortable ride. You can adjust the rear 2-shock assemblies to quickly and easily change the suspension system. Position the suspension system where you are most comfortable.
Using Attachments and Accessories Use only Toro approved attachments and accessories. If you add more than 1 accessory-mount kit (i.e., bucket kit or universal mount kit) is added to any of the 4 locations shown in Figure 13, add a front-weight kit. Contact an Authorized Service Dealer for the front-weight kit. g227752 g037417 Figure 13 1. Add a front-weight kit when 2 or more accessory-mount kits are installed at these positions.
• Operate the machine only in good visibility and appropriate weather conditions. Do not operate the machine when there is the risk of lightning. • Keep your hands and feet away from the cutting units. Keep clear of the discharge opening. • Do not mow with the discharge door raised, g229846 Figure 14 removed, or altered unless there is a grass-collection system or mulch kit in place and working properly. 1. Wear hearing protection.
• Check carefully for overhead objects before you grass, across slopes, or downhill may cause the machine to lose traction. Loss of traction to the drive wheels may result in sliding and a loss of braking and steering. The machine can slide even if the drive wheels are stopped. drive under them, and do not contact them. • Replace damaged ROPS components. Do not repair or alter them. • There is no rollover protection when the roll bar • Remove or mark obstacles such as ditches, holes, is down.
Disengaging the Parking Brake Entering the Operator’s Position Use the mower deck as a step to get into the operator’s position (Figure 16). g192635 g029797 Figure 18 Figure 16 1. Step here. Operating the Parking Brake Always engage the parking brake when you stop the machine or leave it unattended. Engaging the Parking Brake Park the machine on a level surface.
Operating the Mower Operating the Throttle Blade-Control Switch (PTO) You can move the throttle control between FAST and SLOW positions (Figure 21). The blade-control switch (PTO) starts and stops the mower blades and any powered attachments. Always use the FAST position when engaging the PTO. Engaging the Blade-Control Switch (PTO) Note: Engaging the blade-control switch (PTO) with the throttle position at half or less causes excessive wear to the drive belts.
Starting the Engine Shutting Off the Engine Note: A warm or hot engine may not require choking. CAUTION Important: Do not engage the starter for more Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. than 5 seconds at a time. Engaging the starter motor for more than 5 seconds can damage the starter motor. If the engine fails to start, wait 10 seconds before operating the engine starter again.
Using the Motion-Control Levers WARNING The machine can spin very rapidly. You may lose control of the machine and cause personal injury or damage to the machine. • Use caution when making turns. • Slow the machine down before making sharp turns. Driving Forward Note: The engine shuts off when you move the traction-control with the parking brake engaged. To stop the machine, pull the motion-control levers to the NEUTRAL position. 1.
Adjusting the Height of Cut Using the Transport Lock The transport lock has 2 positions, and is used with the deck-lift pedal. There is a LOCK position and an UNLOCK position for the transport position of the mower deck (Figure 28). g008953 Figure 27 Using the Side Discharge The mower has a hinged grass deflector that disperses clippings to the side and down toward the turf.
Adjusting the Height-of-Cut Pin Adjusting the Anti-Scalp Rollers Adjust the height-of-cut from 38 to 127 mm (1-1/2 to 5 inches) in 6 mm (1/4 inch) increments by moving the height-of-cut pin into different hole locations. 1. Move the transport lock to the LOCK position. 2. Push on the deck-lift pedal with your foot and raise the mower deck to the TRANSPORT position (also the 127 mm or 5 inch cutting-height position) as shown in Figure 29. 3. 4. 5.
Operating Tips drop onto your lawn. To avoid this, move onto a previously cut area with the blades engaged or you can disengage the mower deck while moving forward. Using the Fast Throttle Setting For best mowing and maximum air circulation, operate the engine at the FAST position. Air is required to thoroughly cut grass clippings, so do not set the height-of-cut so low as to totally surround the mower deck in uncut grass.
2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Locate the bypass levers behind the seat, down on the left and right side of the frame. 4. To push the machine, move both bypass knobs rearward and lock them into place (Figure 33). 5. Disengage the parking brake before pushing the machine. g036849 g008948 Figure 32 1. ON position 2. OFF position Using the Drive-Wheel Release Valves g035062 Figure 33 WARNING 1.
Transporting the Machine Use a heavy-duty trailer or truck to transport the machine. Use a full-width ramp. Ensure that the trailer or truck has all the necessary brakes, lighting, and marking as required by law. Please carefully read all the safety instructions. Knowing this information could help you or bystanders avoid injury. Refer to your local ordinances for trailer and tie-down requirements.
1. If using a trailer, connect it to the towing vehicle and connect the safety chains. 2. If applicable, connect the trailer brakes and lights. 3. Lower the ramp, ensuring that the angle between the ramp and the ground does not exceed 15 degrees (Figure 34). 4. Back the machine up the ramp (Figure 35). g028043 Figure 35 1. Back the machine up the ramp. 2. Drive the machine forward down the ramp. 5. Shut off the engine, remove the key, and engage the parking brake. 6.
Maintenance • Check the parking brake operation frequently. Maintenance Safety • Never tamper with safety devices. Check their • If you leave the key in the switch, someone could • Clean grass and debris from the cutting unit, Adjust and service it as required. proper operation regularly. accidently start the engine and seriously injure you or other bystanders. Remove the key from the switch before you perform any maintenance. muffler, drives, grass catcher, and engine compartment to prevent fires.
Maintenance Service Interval Maintenance Procedure Every 250 hours • For Kawasaki engines—replace the primary air filter (more often in dirty or dusty conditions). • For Kawasaki engines—check the safety air filter (more often in dirty or dusty conditions). • After the initial change—change the hydraulic-system filters and fluid when using Mobil 1 15W50 fluid.
Lubrication Removing the Sheet-Metal Guard Greasing the Machine Loosen the 2 front bolts and remove the sheet-metal guard to access the mower belts and spindles (Figure 38). After performing maintenance, install the sheet-metal guard and tighten the bolts. Service Interval: Every 25 hours—Grease the front caster axles. (more often in dirty or dusty conditions). Every 50 hours—Grease the pump-idler pivot. Grease the machine more often in dirty or dusty conditions. Grease Type: No.
Engine Maintenance Engine Safety • Keep your hands, feet, face, clothing, and other body parts away from the muffler and other hot surfaces. Allow engine components to cool before performing maintenance. • Do not change the engine governor speed or overspeed the engine. Servicing the Air Cleaner g001883 Figure 40 Service Interval: Every 250 hours—For Kawasaki engines—replace the primary air filter (more often in dirty or dusty conditions). 1. Air-cleaner body 4. Air-cleaner cover 2.
3. Important: If you overfill or underfill the engine crankcase with oil and run the engine, you may damage the engine. Carefully slide the primary filter over the safety filter (Figure 40). Note: Ensure that the primary filter is fully seated by pushing on the outer rim while installing it. Important: Do not press on the soft, inside area of the filter. 4. 1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake. 2.
4. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 5. Drain the oil from the engine (Figure 43). g036856 g036856 g311705 Figure 42 g027734 Figure 43 Changing the Engine Oil Note: Dispose of the used oil at a recycling center. 1. Start the engine and let it run for 5 minutes. Note: This warms the oil so that it drains better. 2.
6. Slowly pour approximately 80% of the specified oil into the filler tube and slowly add the additional oil to bring it to the Full mark (Figure 44). g036856 g235264 Figure 44 7. Start the engine and drive to a flat area. 8. Check the oil level again. Changing the Engine-Oil Filter 1. 2. Drain the oil from the engine; refer to Changing the Engine Oil (page 38). g027477 Figure 45 Change the engine-oil filter (Figure 45).
Servicing the Spark Plug(s) Service Interval: Every 100 hours Ensure that the air gap between the center and side electrodes is correct before installing the spark plug. Use a spark plug wrench for removing and installing the spark plug and a gapping tool or feeler gauge to check and adjust the air gap. Install a new spark plug if necessary. g206628 Figure 47 Type of Spark Plug: NGK® BPR4ES or equivalent Air Gap: 0.75 mm (0.03 inch) Installing the Spark Plug(s) Removing the Spark Plug(s) 1.
Checking the Spark Arrester Cleaning the Cooling System 1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake. For Machines with a Spark Arrester 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. Service Interval: Every 50 hours 3. Remove the air filter from the engine. 4. Remove the engine shroud. 5.
Fuel System Maintenance DANGER In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property. Refer to Fuel Safety (page 15) for a complete list of fuel related precautions. Replacing the Fuel Filter Service Interval: Every 500 hours/Yearly (whichever comes first) (more often in dusty, dirty conditions).
Electrical System Maintenance 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Remove the battery as shown in Figure 50. Electrical System Safety • Disconnect the battery before repairing the machine. Disconnect the negative terminal first and the positive last. Connect the positive terminal first and the negative last. • Charge the battery in an open, well-ventilated g036853 area, away from sparks and flames.
4. Installing the Battery Install the battery in the machine and connect the battery cables; refer to Installing the Battery (page 44). Note: Do not run the machine with the battery disconnected; electrical damage may occur. 1. Position the battery in the tray with the terminal posts opposite from the hydraulic tank (Figure 50). 2. Install the positive (red) battery cable to the positive (+) battery terminal. 3.
Servicing the Fuses Drive System Maintenance The electrical system is protected by fuses. It requires no maintenance; however, if a fuse blows check the component and circuit for a malfunction or short. Checking the Seat Belt The fuses are located on the right console next to the seat (Figure 53). 1. To replace the fuses, pull out the fuse to remove it. 2. Install a new fuse (Figure 53).
Adjusting the Tracking 1. Disengage the blade-control switch (PTO). 2. Drive to an open, flat area and move the motion-control levers to the NEUTRAL-LOCK position. 3. Move the throttle midway between the FAST and SLOW positions. 4. Move both motion-control levers forward until they both hit the stops in the T-slot. 5. Check which way the machine tracks. 6.
Brake Maintenance Checking the Tire Pressure Service Interval: Every 50 hours/Monthly (whichever comes first) Adjusting the Parking Brake Maintain the air pressure in the front and rear tires at 90 kPa (13 psi). Uneven tire pressure can cause uneven cut. Check the tires when they are cold to get the most accurate pressure reading. Service Interval: Every 500 hours Note: Perform this procedure whenever you remove or replace a brake component. 1.
9. Rotate the brake-linkage shaft until the end aligns with the hole in the lever. • Shorten the linkage by turning it clockwise. • Lengthen the linkage by turning it counterclockwise. g036752 Figure 58 1. Cotter pin 3. Brake linkage shaft 2. Parking brake 7. Check both spring lengths as shown in Figure 59. If an adjustment is necessary, turn the top nut clockwise to shorten the spring and counterclockwise to lengthen it. g036100 Figure 59 1. Top nut 3. 44 mm (1-3/4 inches) 2. Spring 8.
Belt Maintenance Inspecting the Belts Service Interval: Every 50 hours Replace the belt if it is worn. The signs of a worn belt include squealing while the belt is rotating; the blades slipping while cutting grass; and frayed edges, burn marks, and cracks on the belt. Replacing the Mower Belt 1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake. 2.
12. Install the belt covers and the bolts attached to them (Figure 63). g036860 Figure 64 1. Clutch stop g027730 6. Remove the idler spring from the post (Figure 65). 7. Remove the existing belt from the hydraulic-pump-drive pulleys and the engine pulley. 8. Install the new belt around the engine pulley and the 2 hydraulic-pump pulleys (Figure 65). Figure 63 13. Install the sheet-metal guard; refer to Removing the Sheet-Metal Guard (page 35). 14.
Adjusting the Tilt Controls System Maintenance 1. 2. Adjusting the Control-Handle Position 3. If the ends of the levers hit against each other, refer to Adjusting the Motion-Control Linkage (page 51). 4. Adjusting the Height 5. You can adjust the motion control levers higher or lower for maximum comfort. 1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake. 2.
1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Push the deck-lift pedal, remove the height-of-cut pin, and lower the mower deck to the ground 4. Raise the rear of the machine up and support it with jack stands (or equivalent support) just high enough to allow the drive wheels to turn freely. 5.
Hydraulic System Maintenance Hydraulic System Safety • Seek immediate medical attention if fluid is injected into skin. Injected fluid must be surgically removed within a few hours by a doctor. • Ensure that all hydraulic-fluid hoses and lines are in good condition and all hydraulic connections and fittings are tight before applying pressure to the hydraulic system. • Keep your body and hands away from pinhole leaks or nozzles that eject high-pressure hydraulic fluid.
2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Allow the engine to cool. 4. Locate the filter and guards on each transaxle-drive system (Figure 70). 5. Remove the 3 screws securing the filter guard and guard (Figure 70). 4. Install the filter guards over each filter that you previously removed. 5. Use the 3 screws to secure the filter guards. 6. Verify that the vent plugs are removed before adding the fluid. 7.
Bleeding the Hydraulic System 1. Raise the rear of machine and support it with jack stands (or equivalent support) just high enough to allow the drive wheels to turn freely. g017625 Figure 72 1. Jacking points 2. g027477 Figure 71 3. Start the engine, move the throttle control ahead to the 1/2 throttle position, and disengage the parking brake. A. Move the bypass levers into the pushing the machine position.
4. Mower Deck Maintenance Check the fluid level in the expansion reservoir a final time. Add the specified fluid as until it reaches the FULL COLD line on the expansion reservoir. Blade Safety • Inspect the blades periodically for wear or damage. • Use care when checking the blades. Wrap the blades or wear gloves, and use caution when servicing the blades. Only replace or sharpen the blades; never straighten or weld them.
g006530 Figure 73 1. Cutting edge 3. Wear/slot forming 2. Curved area 4. Crack g014973 Figure 75 1. Blade (in position for measuring) Checking for Bent Blades 2. Level surface 3. Measured distance between blade and the surface (A) Note: The machine must be on a level surface for the following procedure. 4. 1. Raise the mower deck to the highest height-of-cut position. 2.
g014973 Figure 77 1. Opposite blade edge (in position for measuring) 2. Level surface 3. Second measured distance between blade and surface (B) A. g017443 If the difference between A and B is greater than 3 mm (1/8 inch), replace the blade with a new blade; refer to Removing the Blades (page 58) and Installing the Blades (page 59). Figure 78 3.
g000553 Figure 80 1. Blade 3. 4. Position the mower deck in the transport-lock position. 5. Carefully rotate the blades from side to side. 6. Measure between the blade tip and the flat surface (Figure 81). If the measurements are not within 5 mm (3/16 inch), adjust the leveling; continue with this procedure. 2. Balancer Repeat this procedure until the blade is balanced. Installing the Blades 1. Install the blade onto the spindle shaft (Figure 78).
13. Loosen the locknuts (Figure 84) on all 4 corners and ensure that the mower deck is sitting securely on all 4 blocks. 14. Remove any slack from the deck hangers and make sure the deck-lift foot lever is pushed back against the stop. 15. Tighten the 4 locknuts. g229304 Figure 82 1. Blades front to rear 3. Measure from the tip of the blade to the flat surface here. 2. Blade tip 8. Set the anti-scalp rollers to top holes or remove them completely for this adjustment. 9.
g036866 Figure 85 1. Remove the nuts and bolts here. 2. Remove the nuts and bolts here. 8. g015594 Figure 86 Slide the deck out to the right side of the machine. 1. Bolt 5. Spring installed 2. Spacer 6. Grass deflector 3. Locknut 7. J-hook end of spring 4. Spring Replacing the Grass Deflector WARNING 3. Place the spacer and the spring onto grass deflector. 4. Place 1 J-hook end of the spring behind the deck edge.
Cleaning Cleaning under the Mower Deck Service Interval: Before each use or daily 1. Park the machine on a level surface, disengage the blade-control switch (PTO), and engage the parking brake. 2. Shut off the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Raise the mower deck to the TRANSPORT position. Cleaning the Suspension System Use compressed air to clean the suspension system.
Storage 12. Check the condition of the blades; refer to Servicing the Cutting Blades (page 56). Storage Safety 13. Prepare the machine for storage when non-use occurs over 30 days. Prepare the machine for storage as follows: • Shut off the engine, remove the key, and wait for all moving parts to stop before you leave the operator’s position. Allow the machine to cool before adjusting, servicing, cleaning, or storing it. A.
Troubleshooting Problem The engine overheats. Possible Cause 1. The engine load is excessive. 1. Reduce the ground speed. 2. The oil level in the crankcase is low. 3. The cooling fins and air passages under the engine-blower housing are plugged. 4. The air cleaner is dirty. 2. Add oil to the crankcase. 3. Remove the obstruction from the cooling fins and air passages. 5. Dirt, water, or stale fuel is in the fuel system. The starter does not crank.
Problem The machine pulls to the left or right (with the motion-control levers fully forward). The machine does not drive. The machine vibrates abnormally. The cutting height is uneven. The blades do not rotate. Possible Cause 1. The tracking needs adjustment 1. Adjust the tracking. 2. The tire pressure in the drive tires is not correct. 2. Adjust the tire pressure in the drive tires. 1. The bypass valves are not closed tight. 1. Tighten the bypass valves. 2.
Schematics g037072 Wire Diagram (Rev.
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