OPERATION MANUAL SERIES STX RIDE-ON POWER TROWEL STX55Y6 (YANMAR DIESEL ENGINE) Revision #0 (03/15/06) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
WARNING Grinding/cutting/drilling of masonry, concrete, metal and other materials can generate dust, mists and fumes containing chemicals known to cause serious or fatal injury or illness, such as respiratory disease, cancer, birth defects or other reproductive harm.
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STX-SERIES — HERE'S HOW TO GET HELP HERE'S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING MULTIQUIP CORPORATE OFFICE 18910 Wilmington Ave. Carson, CA 90746 Email: mq@multiquip.com Internet: www.multiquip.com PARTS DEPARTMENT 800-427-1244 310-537-3700 MAYCO PARTS 800-306-2926 310-537-3700 SERVICE DEPARTMENT 800-421-1244 310-537-3700 TECHNICAL ASSISTANCE 800-478-1244 WARRANTY DEPARTMENT 800-421-1244, EXT. 279 310-537-3700, EXT.
STX-SERIES — TABLE OF CONTENTS Technical Assistance ............................................... 5 Table of Contents .................................................... 6 Parts Ordering......................................................... 7 Dimensions ............................................................. 8 Specifications .......................................................... 9 Training Checklist .................................................. 10 Daily Pre-Operation Checklist .......
PARTS ORDERING PROCEDURES www.multiquip.com Effective: June 1st, 2005 Ordering parts has never been easier! Choose from three easy options: Best Deal! Order via Internet (Dealers Only): If you have an MQ Account, to obtain a Username and Password, E-mail us at: parts@multiquip.com. Order parts on-line using Multiquip’s SmartEquip website! ■ View Parts Diagrams ■ Order Parts ■ Print Specification Information To obtain an MQ Account, contact your District Sales Manager for more information.
STX-SERIES — DIMENSIONS C-HEIGHT B-WIDTH A-LENGTH Table 1. STX-Series (STX55Y6) Specifications A – Length – in. (cm) B – Width – in. (cm) C – Height – in. (cm)1 Weight – lbs. (kgs.) Operating Weight – lbs. (kgs.) Shipping Sound Pressure – dBA2 Vibration – ft/s2 (m/ s2)3 Blade Tip Speed – FPM (m/s) Engine H.P. Fuel Tank – gallons (liters) Rotor – RPM Path Width – in. (cm) 125 (318) 65.0 (165) 56.0 (142) 2,000 (909) 2500 (1137) 97 <8.0 (2.5) 1924 (9.
STX-SERIES — SPECIFICATIONS Table 2. Specifications (Engine) Model YANMAR 4TNV84T Type Ver tical inline water cooled diesel engine direct injected - turbocharged Bore X Stroke 3.3 in. x 3.5 in. (84 mm x 90 mm) Displacement 121.7 cu-in. (1.995 L) 55 bhp (41.2 kW/min-1, 56PS) @ 3210 min-1 Max Output Engine Approx. 11 U.S. Gallons (41.
STX-SERIES — TRAINING CHECKLIST TRAINING CHECKLIST This checklist lists the minimum requirements for machine maintenance and operation. Please feel free to detach it and make copies. Use this checklist when training a new operator or use as a review for more experienced operators. TRAINING CHECKLIST NO. DESCRIPTION 1 Read Operator’s Manual completely. 2 Machine layout, location of components, checking of engine and hydraulic oil levels. 3 Fuel system, refueling procedure.
STX-SERIES — DAILY PRE-OPERATION CHECKLIST DAILY PRE-OPERATION CHECKLIST DAILY PRE-OPERATION CHECKLIST 1 Engine oil level. 2 Hydraulic oil level. 3 Radiator coolant level. 4 Condition of blades. 5 Blade pitch operation. 6 Safety Stop Switch operation. 7 Steering control operation. COMMENTS: STX-SERIES • RIDE-ON POWER TROWEL — OPERATION MANUAL — REV.
STX-SERIES — SAFETY MESSAGE ALERT SYMBOLS HAZARD SYMBOLS FOR YOUR SAFETY AND THE SAFETY OF OTHERS! Safety precautions should be followed at all times when operating this equipment. Failure to read, understand and comply with the Safety Messages and Operating Instructions could result in injury to yourself and others. Lethal Exhaust Gases Engine exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled.
STX-SERIES — SAFETY MESSAGE ALERT SYMBOLS Accidental Starting Respiratory Hazard Accidental starts can cause severe injury or death. ALWAYS place the ON/OFF switch in the OFF position. Disconnect and ground spark plug lead and disconnect negative battery cable from battery before servicing. ALWAYS wear approved respiratory protection. Sight and Hearing hazard ALWAYS wear approved eye and hearing protection.
STX-SERIES — RULES FOR SAFE OPERATION ■ NEVER operate this equipment when not feeling well due to fatigue, illness or taking medicine. RULES FOR SAFE OPERATION ■ NEVER operate the trowel under the influence of drugs or alcohol. ■ Replace nameplate, operation and safety decals when they become difficult to read.
STX-SERIES — RULES FOR SAFE OPERATION ■ NEVER run engine without air filter. Severe engine damage may occur. Service air filter frequently to prevent carburetor malfunction. ■ NEVER place your feet or hands inside the guard rings while starting or operating this equipment. ■ AVOID wearing jewelry or loose fitting clothing that may snag on the controls or moving parts as this can cause a serious injury. ■ ALWAYS keep clear of rotating or moving parts while operating the trowel.
STX-SERIES — RULES FOR SAFE OPERATION ■ Use chock-blocks at each wheel when parked to prevent trailer from rolling. Transporting ■ ALWAYS shutdown engine before transporting. ■ Use the trailer's swivel jack to adjust the trailer height to a level position while parked. ■ Tighten fuel tank cap securely and close fuel petcock to prevent fuel from spilling. ■ Drain fuel when transporting trowel for long distances or over bad roads. ■ Avoid sudden stops and starts.
STX-SERIES — RULES FOR SAFE OPERATION Maintenance Safety Emergencies ■ ALWAYS shut down the engine and disconnect battery before performing service or maintenance functions. Contact with moving parts can cause serious injury. ■ ALWAYS know the location of the nearest fire extinguisher. ■ Securely support any trowel components that must be raised. ■ NEVER lubricate components or attempt service on a running trowel. ■ ALWAYS allow the trowel a proper amount of time to cool before servicing.
STX-SERIES — INTENDED USE AND GENERAL INFORMATION Figures 2 and 3 show the location of the controls, indicators and general maintenance parts. Each control may perform more than one function. The functions of the controls or indicators are on pages 20 and 21. Intended Use Operate the STX-Series Trowel, tools and components in accordance with the manufacturer's instructions. Use of any other tools for stated operation is considered contrary to designated use.
STX-SERIES — OPERATION AND SAFETY DECALS Machine Safety Decals The STX-SERIES Ride-On Power Trowel is equipped with a number of operation and safety decals. These decals are provided for operator safety and maintenance information. Should any of these decals become unreadable, replacements can be obtained from your dealer. WARNING To avoid injury, you MUST read and understand operator’s manual before using this machine. This machine to be operated by qualified personnel only. Ask for training as needed.
STX-SERIES — CONTROLS AND INDICATORS 4 5 6 1 13 2 14 15 3 7 16 18 8 11 9 10 17 12 12 19 10 Figure 2. STX-SERIES Controls and Components (Front) Figures 2 and 3 (pages 20 and 21) show the location of the controls, indicators and general maintenance parts. The function of each control, indicator or maintenance part is explained below: 1. 2. 11. Foot Pedal – Controls blade speed. Slow blade speed is accomplished by slightly depressing the foot pedal.
STX-SERIES — CONTROLS AND INDICATORS Figure 3. STX-SERIES Controls and Components (Rear) 20. Documentation Box – Storage for documentation and other information regarding the trowel. 26. Blade Pitch Control Switch (left side) – Adjusts the left side blade pitch independently of the right side. 21. Battery – Provides +12V DC power to the electrical system. 27. Blade Pitch Control (Twin Pitch) – Adjusts the blade pitches simultaneously. 22.
STX-SERIES — BASIC ENGINE INFORMATION 11 10 19 9 12 18 17 12 1 2 16 13 8 3 4 7 5 14 6 15 Figure 4. Basic Engine Components Basic Engine Components The following refer to basic engine components and their functions that an operator may need to reference . The manufacturer's engine manual provides further instructions and details of operation and servicing. The engine shown in Figure 4 is a Yanmar engine. 1. Fuel Filter – Removes dirt and water from the engine fuel. 2.
STX-SERIES — TROWEL SETUP Trowel Setup The purpose of this section is to assist the user in setting up a NEW trowel. If your trowel is already assembled, (seat, handles, knobs and battery), this section can be skipped. The new trowel cannot be put into service until the pre-setup installation instructions are NOTE completed. These pre-setup instructions only need to be performed at the time of unpacking a NEW trowel.
STX-SERIES — PRE-INSPECTION PRE-INSPECTION The following sections are intended to assist the operator with pre-inspection and the initial startNOTE up of the STX-SERIES Ride-On Power Trowel. It is extremely important that these sections are read carefully before attempting to use the trowel in the field. DO NOT use your Ride-On Power Trowel until these sections are thoroughly understood. 1. When checking or adding oil, place the machine so the engine is level. 2.
STX-SERIES — INITIAL START-UP INITIAL START-UP CAUTION WARNING Hydraulic oil can get HOT! ALWAYS allow hydraulic oil to cool before removing fill cap. NEVER operate the trowel in a confined area or enclosed area structure that does not provide ample free flow of air. CAUTION ALWAYS wear approved eye and hearing protection before operating the ride-on power trowel. Removal of the fill cap when oil fills the sight glass will cause hydraulic oil to spill. Clean up hydraulic oil spills immediately.
STX-SERIES — INITIAL START-UP 6. WARNING Turn the ignition key clockwise to the (start) position. The oil and charge indicator lights (Figure 11) should be on. NEVER disable or disconnect the Safety Stop Switch. It is provided for the operators’ safety and injury may result if it is disabled, disconnected or improperly maintained. 3. 4. It is recommended that the operation of the Safety Stop Switch is checked prior to performing any troweling operations.
STX-SERIES — OPERATION OPERATION 2 The following section is intended as a basic guide to the Ride-On Power Trowel operation, and is not NOTE to be considered a complete guide to concrete finishing. It is strongly suggested that all operators (experienced and novice) read “Slabs on Grade” published by the American Concrete Institute, Detroit Michigan.
STX-SERIES — OPERATION 1. The foot pedal (Figure 15) solely controls blade speed. The position of the foot pedal determines the blade speed. Slow blade speed is obtained by slightly depressing the pedal. Maximum blade speed is obtained by fully depressing the pedal. 5. Practice maneuvering the Ride-on Power Trowel using the information listed in Table 3. Try to practice controlled motions as if you were finishing a slab of concrete. Practice edging and covering a large area 6.
STX-SERIES — OPERATION Blade Pitch Control Engine Shut-Down The trowel blades can be pitched for various finishing operations with the two rocker switches located on the left control panel next to the left joystick control (Figure 19). 1. Return the speed control lever (Figure 21) to low idle, and allow the engine to idle for 5 minutes . HIG H LO W Figure 21. Blade Pitch Control Figure 19.
STX-SERIES — MAINTENANCE MAINTENANCE When performing maintenance on the trowel or engine, follow all safety messages and rules for safe operation stated at the beginning of this manual. See the engine manual supplied with your machine for appropriate engine maintenance schedule and troubleshooting guide for problems. 6 11 9 1 2 10 3 WARNING 8 4 Accidental starts can cause severe injury or death. 12 7 5 6 18 17 18 ALWAYS place the ON/OFF switch in the OFF position.
STX-SERIES — MAINTENANCE Operating the engine with loose or damaged air cleaner components could allow unfiltered air into the engine causing premature wear and failure. WARNING NOTE Certain maintenance operations or machine adjustments require specialized knowledge and skill. Attempting to perform maintenance operations or adjustments without the proper knowledge, skills or training could result in equipment damage or injury to personnel. If in doubt, consult your dealer.
STX-SERIES — MAINTENANCE 6. Reinstall the element or if equipped, the precleaner over the paper air cleaner element. 7. Reinstall the air cleaner dust pan and secure the latches. Table 4. Recommended Viscosity Grades 10W-30, 10W-40 5W-20, 5W-30 Make sure the correct depth air cleaner element and rubber seal are used for the engine specification involved.
STX-SERIES — MAINTENANCE Radiator/Cooling System WARNING Hot coolant can cause severe burns. DO NOT remove cap if radiator is HOT. 1. 2. Check and clean radiator fins. Check cooling water. 3. Check radiator hoses for fatigue or cracking. 4. Check radiator cap seal. 3. Never attempt to charge a battery that is frozen. The battery can explode unless first allowed to thaw. 4. Disconnect the negative terminal ( - ) of the battery during storage.
STX-SERIES — MAINTENANCE MAINTENANCE PROCEDURES 1. Pump Actuation Levers Checking/Adjusting Trowel Speed 2. Connecting Rod Because the two hydraulic drive motors operate independent of each other, the trowel speed between them may vary. If the unit’s steering is difficult to control, or if one spider is spinning noticeably faster or slower than the other, the trowel speed may need to be checked. It is also recommended that the trowel speed be checked at least once a year. Figure 27.
STX-SERIES — MAINTENANCE Matching Blade Pitch for Both Sets of Blades Sometimes it may be necessary to match blade pitch between the left and right sets of blades. There are some signs that this may be necessary. For example, the differences in pitch can cause a noticeable difference in finish quality between the left and right sets of blades. The difference in blade pitch can also make the machine difficult to control.
STX-SERIES — MAINTENANCE Stabilizer Ring Removal Trowel Blade Removal 1. To remove the outer stabilizer ring (Figure 31), remove the six bolts at the end of each spider arm. 1. Remove the trowel blades from the trowel arm by removing the three hex head bolts (Figure 32) from the trowel arm. Set blades aside. 5 4 1 3 2 4 1 2 3 1 2 3 4 5 Hex Cap Screw Lock Washer Rod End Hex Nut Stabilizer Ring 1 2 3 4 Figure 31. Stabilizer Ring Hex Cap Screw Lock Washer Arm Blade Figure 32.
STX-SERIES — MAINTENANCE 3. Should the trowel arm inserts (bronze bushing ) (item 2 Fig. 34) come out with the trowel arm, remove the 2-piece bushing from the trowel arm and set aside in a safe place. If the bushing is retained inside the spider plate, carefully remove the bushing. 4. Examine the 2-piece bronze trowel arm bushing insert (Figure 34), clean if necessary. Replace bushing if out-of-round or worn.
STX-SERIES — MAINTENANCE 3. Next, check the clearance between the round shaft and the test surface as one of the flat hex sections of the arm rests on the test surface. Rotate the arm to each of the flat hex sections and check the clearance of the round shaft. Use a feeler gauge of .005" (0.127 mm). Each section should have the same clearance between the round of the trowel arm shaft and the test surface. 4. If the trowel arm is found to be uneven or bent, replace the trowel arm.
STX-SERIES — MAINTENANCE 4. Use an allen wrench to tighten the locking bolts securing the trowel arm in place. 5. Adjust the bolt "distance" shown in Figure 37 to match one of the arms. The other arms will be adjusted to match this distance. 6. Loosen the locking nut on the trowel arm lever, then turn the trowel arm adjusting bolt until it barely touches (.010") the fixture adjusting bolt. 7. Once the correct adjustment is made, tighten the lock nut on the trowel arm to lock in place. 8.
STX-SERIES — MAINTENANCE To fully test the hydrostatic system, the spiders will need to be locked so that they cannot rotate. This can be done by wrapping a chain around an arm on each spider, thus chaining them together in the back of the trowel. Checking Hydraulic Pressure WARNING NEVER use your hand to find hydraulic leaks. Use a piece of wood or cardboard. Hydraulic fluid injected into the skin must be treated by a knowledgable physician immediately or severe injury or death can occur.
STX-SERIES — MAINTENANCE Checking Steering Pressure Steering pressure is also checked at either of the high pressure diagnostic couplers under the right grill guard. Check steering pressure at either coupler with a 300-600 PSI gauge. (Table 5) indicates proper steering pressure. Check with engine at Full Speed. Table 5.
STX-SERIES — MAINTENANCE Pitch Pressure Check Pitch Pressure Out of Specification Access the pitch block and pitch pressure test port at the rightrear of the trowel (Figure 44). Removal of the right-rear seat frame panel may be necessary. Pitch pressure must be measured with a pitch switch activated. With pitch switches unactivated, the pitch pressure will be the same as the charge/steering pressure. Proper pitch pressure is 2300 PSI (2250 - 2350 PSI).
STX-SERIES — MAINTENANCE Installing Pans Onto Finisher Blades These round discs sometimes referred to as "pans" attach to the spiders arms and allow early floating on wet concrete and easy movement from wet to dry areas. They are also very effective in embedding large aggregates and surface hardeners. 1. Lift trowel just enough to slide pan under blades. Lower finisher onto pan with blades (Item #1) adjacent to Z-Clips (Item #4). 2. Rotate blades into position under Z-Clips.
STX-SERIES — TROUBLESHOOTING TABLE 5. TROUBLESHOOTING SYMPTOM POSSIBLE PROBLEM SOLUTION Fuel? Look at the fuel system. Make sure there is fuel being supplied to the engine. Check to ensure that the fuel filter is not clogged. Ignition? Check to ensure that the ignition switch has power and is functioning correctly. Other problems? Consult engine manufacturer’s manual. Loose wire connections? Check wiring. Replace as necessary. Bad contacts? Replace seat cushion (contains the switch).
STX-SERIES — TROUBLESHOOTING TABLE 5. TROUBLESHOOTING (CONTINUED) SYMPTOM POSSIBLE PROBLEM SOLUTION Wiring? Check all electrical connections, including the master on/off switch and check to see if wiring is in good condition with no shor ts. Replace as necessary. Lights? Check to see if light bulbs are still good. Replace if broken. Retardant? Check the tank to make sure retardant is present. Fill tank as necessary.
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TERMS AND CONDITIONS OF SALE — PARTS Effective: February 22, 2006 PAYMENT TERMS 5. Parts must be in new and resalable condition, in the original Multiquip package (if any), and with Multiquip part numbers clearly marked. 6. The following items are not returnable: Terms of payment for parts are net 30 days. FREIGHT POLICY All parts orders will be shipped collect or prepaid with the charges added to the invoice. All shipments are F.O.B. point of origin.
OPERATION MANUAL HERE'S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING MULTIQUIP CORPORATE OFFICE 18910 Wilmington Ave. Carson, CA 90746 Email: mq@multiquip.com Internet: www.multiquip.com PARTS DEPARTMENT 800-427-1244 310-537-3700 MAYCO PARTS 800-306-2926 310-537-3700 SERVICE DEPARTMENT 800-421-1244 310-537-3700 TECHNICAL ASSISTANCE 800-478-1244 WARRANTY DEPARTMENT 800-421-1244, EXT. 279 310-537-3700, EXT.
