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MQ Multiquip WHITEMAN B46B90 Operation Manual

Walk-behind trowel
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OPERATION MANUAL
MODEL B46B90
WALK-BEHIND TROWEL
(BRIGGS & STRATTON 8.5 HP GASOLINE ENGINE)
Revision #0 (04/05/22)
To find the latest revision of this publication or
associated parts manual, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
PN: 48238

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Summary of Contents for MQ Multiquip WHITEMAN B46B90

  • Page 1 OPERATION MANUAL MODEL B46B90 WALK-BEHIND TROWEL (BRIGGS & STRATTON 8.5 HP GASOLINE ENGINE) Revision #0 (04/05/22) To find the latest revision of this publication or associated parts manual, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES. PN: 48238...

  • Page 2: Proposition 65 Warning

    PROPOSITION 65 WARNING PAGE 2 — B46B90 WALK-BEHIND TROWEL • OPERATION MANUAL — REV. #0 (04/05/22)

  • Page 3: Silicosis/Respiratory Warnings

    SILICOSIS/RESPIRATORY WARNINGS WARNING WARNING SILICOSIS WARNING RESPIRATORY HAZARDS Grinding/cutting/drilling of masonry, concrete, metal and Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition may give other materials can generate dust, mists and fumes off dust or mists containing crystalline silica. Silica is a containing chemicals known to cause serious or fatal basic component of sand, quartz, brick clay, granite and injury or illness, such as respiratory disease, cancer,...

  • Page 4: Table Of Contents

    TABLE OF CONTENTS B46B90 Walk-Behind Trowel Proposition 65 Warning ........... 2 Silicosis/Respiratory Warnings ........ 3 Table Of Contents ............ 4 Training Checklist ............ 5 Daily Pre-Operation Checklist ......... 6 Safety Information ..........7–11 Lifting And Transporting ......... 12 Specifications (Trowel) ........... 13 Dimensions ............

  • Page 5: Training Checklist

    TRAINING CHECKLIST Training Checklist Description Date Read operation manual completely. Machine layout, location of components, checking of engine oil level. Fuel system, refueling procedure. Operation of controls (machine not running). Safety controls, safety stop switch operation. Emergency stop procedures. Startup of machine, engine choke. Maintaining a hover.

  • Page 6: Daily Pre-Operation Checklist

    DAILY PRE-OPERATION CHECKLIST Daily Pre-Operation Checklist       Engine oil level Gearbox oil level Condition of blades Blade pitch operation Safety stop switch operation PAGE 6 — B46B90 WALK-BEHIND TROWEL • OPERATION MANUAL — REV. #0 (04/05/22)

  • Page 7: Safety Information

    SAFETY INFORMATION Do not operate or service the equipment before reading Potential hazard associated with the operation of this equipment will be referenced with hazard symbols which the entire manual. Safety precautions should be followed at all times when operating this equipment. may appear throughout this manual in conjunction with Failure to read and understand the safety safety messages.
  • Page 8 SAFETY INFORMATION GENERAL SAFETY NOTICE CAUTION „ This equipment should only be operated by trained and qualifi ed personnel 18 years of age and older. „ NEVER operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, „ Whenever necessary, replace nameplate, operation and hearing protection, steel-toed boots and other protective safety decals when they become diffi cult read.
  • Page 9 SAFETY INFORMATION TROWEL SAFETY „ ALWAYS keep work area clear around the trowel. DANGER Make sure it is free of debris and objects. „ Engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled.
  • Page 10 SAFETY INFORMATION „ Store fuel in appropriate containers, in well-ventilated NOTICE areas and away from sparks and fl ames. „ NEVER run engine without an air fi lter or with a dirty air „ NEVER use fuel as a cleaning agent. fi lter.
  • Page 11 SAFETY INFORMATION ENVIRONMENTAL SAFETY/DECOMMISSIONING EMISSIONS INFORMATION NOTICE NOTICE Decommissioning is a controlled process used to safely The gasoline engine used in this equipment has been retire a piece of equipment that is no longer serviceable. designed to reduce harmful levels of carbon monoxide If the equipment poses an unacceptable and unrepairable (CO), hydrocarbons (HC) and nitrogen oxides (NOx) safety risk due to wear or damage or is no longer cost...

  • Page 12: Lifting And Transporting

    LIFTING AND TRANSPORTING LIFTING THE TROWEL Lifting Bail The lifting bail provides an optimal lift point for the trowel. WARNING When lifting the trowel onto a concrete slab, attach a chain Extra care should be taken when lifting the trowel. or rope to the lifting bail.

  • Page 13: Specifications (Trowel)

    SPECIFICATIONS (TROWEL) Table 1. B46B90 Trowel Specifications Table 2. Briggs & Stratton Engine Specifications Number of Blades Model XR 1450 Clutch Type Centrifugal Type Single-cylinder, gasoline engine Ring Diameter 46 in. (1,168 mm) Bore × Stroke 3.22 in. × 2.28 in. (82 mm × 58 mm) Rotor Speed 60–130 rpm Displacement...

  • Page 14: Dimensions

    DIMENSIONS A A A SIDE VIEW Standard Handle Shown TOP VIEW Figure 2. B46H90 Trowel Dimensions Table 4. B46H90 Trowel Dimensions (A) Height (Lifting Bail) 31.5 in. (800 mm) (B) Height (Handle) 41 in. (1,044 mm) (C) Width (Ring Diameter) 46 in.

  • Page 15: General Information

    GENERAL INFORMATION INTENDED USE Gearbox Operate this trowel, its components and tools in accordance The gearbox is located beneath the engine and transfers with the manufacturer’s instructions. Use of any other tools power to the spider assembly. The gearbox controls the for stated operation is considered contrary to designated rotational speed of the trowel and is equipped with two use.

  • Page 16: Components (Trowel)

    COMPONENTS (TROWEL) QUICK PITCH™ HANDLE (OPTION) Figure 3. Trowel Components PAGE 16 — B46B90 WALK-BEHIND TROWEL • OPERATION MANUAL — REV. #0 (04/05/22)
  • Page 17 COMPONENTS (TROWEL) Figure 3 shows the location of the basic trowel components. 11. Centrifugal Safety Stop Switch — If the operator Listed below is a brief explanation of each component. loses control of the trowel, this switch will shut down the engine.

  • Page 18: Components (Engine)

    COMPONENTS (ENGINE) Figure 4. Basic Engine Components INITIAL SERVICING 4. Muffler — Reduces noise and emissions. DO NOT touch the muffler while it is hot. The engine (Figure 4) must be checked for proper lubrication and filled with fuel prior to operation. Refer to WARNING the manufacturer’s engine manual for detailed operation Engine components can generate...

  • Page 19: Setup

    SETUP UNPACKING THE HANDLE ASSEMBLY AND INSTALLATION The handle (Figure 5) is shipped in the folded, or stowed, Some components must be installed before the trowel can position. be operated. This section provides general instructions on how to install these components. For more detailed 1.
  • Page 20 SETUP 4. Loosen the cable housing clamp screw and the swivel NOTICE stop screw (Figure 9). If additional handlebar adjustment is desired, a trowel SWIVEL handle wedge kit (P/N 2576) can be purchased from STOP SCREW your Multiquip dealer. CABLE The wedges are placed between the handle and SWIVEL the gearbox, which will move your handle operating...
  • Page 21 SETUP Blade Pitch Cable Installation 8. Make sure the throttle cable is seated in the throttle cable receiver (Figure 10). 1. For trowels equipped with a standard handle, turn the 9. Route the throttle wire approximately 1/2 inch past the star wheel counterclockwise to release tension on the cable retaining screw (Figure 10).
  • Page 22 SETUP Pre-Load Adjustment (Quick Pitch™ Handle Only) 3. Remove brass set nut #1 from the end of the blade pitch cable (Figure 14). WARNING The Quick Pitch™ handle is spring-loaded. Personal injury or damage can result from improper handling, BLADE installation, or adjustment.
  • Page 23 SETUP Float Pan Installation (Optional) BLADE STOP Float pans attach to the trowel blades and allow the trowel to ‘float’ on wet concrete. The disc design facilitates early floating and easy movement from wet to dry areas. Float LATCH PIN pans are also very effective at embedding large aggregates and surface hardeners.

  • Page 24: Inspection

    INSPECTION ENGINE OIL 1. Place the trowel on secure, level ground with the engine OFF. 2. Remove the dipstick (Figure 20) from the engine oil filler hole and wipe it clean. DIPSTICK OIL FILLER PORT Figure 21. Oil Filler Port FUEL Remove the fuel filler cap and inspect the fuel level in the FULL...
  • Page 25 INSPECTION GEARBOX OIL 2. Inspect the V-belt (Figure 23) to determine if it is oil-soaked or glazed (a hard, shiny appearance on the 1. Look at the sight glass on the side of the gearbox sides of the belt). Either of these conditions can cause (Figure 22) to determine if gearbox oil is low.
  • Page 26 INSPECTION CENTRIFUGAL SAFETY STOP SWITCH BEFORE STARTING Your trowel is equipped with a centrifugal safety stop switch 1. Clean the trowel, particularly the engine cooling air (Figure 26). This switch should be tested every time the inlet. Remove all dirt and dust. engine is started.

  • Page 27: Operation

    OPERATION This section is intended to assist the operator with the initial 4. Place the centrifugal safety stop switch in the ON startup of the walk-behind trowel. It is extremely important position (Figure 30). that this section be read carefully before attempting to use the trowel in the field.
  • Page 28 OPERATION CENTRIFUGAL SAFETY STOP SWITCH TEST 7. Place the engine fuel valve lever (Figure 33) in the OPEN position. 1. Clear the area around the trowel. Make sure it is free of debris and objects. FUEL VALVE LEVER 2. With the engine running at idle, place the safety stop switch lever in the OFF position (Figure 35).
  • Page 29 OPERATION TO BEGIN TROWELING Quick Pitch™ Handle Place the handlebar throttle lever (Figure 37) in the RUN To pitch the blades upward with the Quick Pitch™ handle position. (Figure 39), pull the T-handle backward while squeezing the trigger lock. Push the T-handle forward to pitch the blades flat (no pitch).
  • Page 30 OPERATION MANEUVERING THE TROWEL 3. Continue to practice maneuvering the trowel as if 1. Stand in the operator’s position behind the handle. With finishing a slab of concrete. Practice edging and secure footing and a firm grasp on the handle, slowly covering a large area.
  • Page 31 OPERATION STOPPING THE TROWEL 4. Place the engine fuel valve lever (Figure 44) in the CLOSED position. 1. Return the handlebar throttle lever to the IDLE position (Figure 41) and let the engine run for three minutes FUEL VALVE LEVER at low speed.

  • Page 32: Options

    OPTIONS HANDLES Quick Pitch™ Handle (Optional) Standard Handle The optional Quick Pitch™ handle (Figure 47) allows the operator to quickly and easily adjust blade pitch. Refer to The standard walk-behind trowel handle (Figure 46) is the Operation section of this manual for more information. equipped with a star wheel for blade pitch adjustment.
  • Page 33 OPTIONS BLADES AND PANS Trowel blades are essential for finishing concrete. The blades of this trowel were built to stringent quality standards from the finest steel. Trowel blades should be replaced when they fail to finish concrete in a satisfactory manner. If replacement blades are needed, refer to the parts manual associated with your trowel model for part numbers, and Figure 50.

  • Page 34: Maintenance

    MAINTENANCE Table 6. Engine Maintenance Schedule Every 8 Every 25 Every 50 Every 100 First 5 Description Operation Hours or Hours or Hours or Hours or Annually Hours Daily Annually Annually Annually Check Engine Oil Change Area Around Muffler and Clean Controls Spark Plug...
  • Page 35 MAINTENANCE ENGINE MAINTENANCE General maintenance practices are crucial to the performance and longevity of your trowel. This equipment Inspect the engine daily for cleanliness, oil or fuel leakage, requires routine cleaning, lubrication, and inspection of and loose fasteners. components for wear or damage. Air Cleaner Refer to Table 6 and Table 7 to schedule engine and trowel maintenance.
  • Page 36 MAINTENANCE Engine Oil NOTICE Refer to Figure 54. DO NOT use pressurized air or solvents to clean the air filter. Pressurized air can damage the filter and solvents DIPSTICK/ will dissolve the filter. OIL FILLER PORT 5. Wash the pre-cleaner in liquid detergent and water. Allow the pre-cleaner to throughly air dry.
  • Page 37 MAINTENANCE V-Belt 6. After adding oil, wait one minute and then check the oil level. 1. Inspect the V-belt (Figure 56) to determine if it is frayed, 7. Reinstall the oil dipstick and reconnect the spark plug peeling, full of tiny cracks, has pieces of rubber missing, wire to the spark plug.
  • Page 38 MAINTENANCE Spark Arrester WIRE BRUSH 1. Remove the spark plug wire from the spark plug terminal. Secure the spark plug wire to prevent contact with the spark plug terminal. NOTICE Note the orientation of the muffler deflector before removal. 2. Remove and retain the three M4 hex flange screws SPARK ARRESTER SCREEN securing the muffler deflector and spark arrester to...
  • Page 39 MAINTENANCE TROWEL MAINTENANCE Blade Pitch Adjustment Clean the trowel daily. Remove all dust and slurry buildup. Perform maintenance adjustment of blade pitch using a Make sure lubrication is performed after any steam bolt on the trowel arm lever (Figure 60). This bolt is the cleaning.
  • Page 40 MAINTENANCE Once it has been determined that blade pitch adjustment PITCH ADJUSTMENT is required, do the following: BOLT LOWER WEAR PLATE 1. Place the trowel on a flat, level surface with blocks under the main guard ring for support. Any uneven spots in the floor or debris under the trowel blades will cause an incorrect perception of adjustment.
  • Page 41 MAINTENANCE Blade Replacement Trowel Arm Removal It is recommended to replace all of the trowel blades at the Refer to Figure 65. same time. If only one or some of the blades are changed, ROLL PIN the machine may wobble or bounce and will not finish concrete consistently.
  • Page 42 MAINTENANCE Trowel Arm Inspection 4. Replace any bent or uneven trowel arms. Trowel Arm Adjustment Trowel arms (Figure 66) can be damaged by rough handling such as dropping the trowel, or by striking exposed The easiest and most consistent way to adjust a trowel arm plumbing, rebar or other objects while in operation.
  • Page 43 MAINTENANCE 3. A thin shim (Figure 68) may be required to cover the 10. Reinstall the lower wear plate, thrust collar, and wear blade holes on the trowel arm. Be sure to align the trowel ring onto the spider shaft in the reverse order of disassembly.

  • Page 44: Troubleshooting (Engine)

    TROUBLESHOOTING (ENGINE) Troubleshooting (Engine) Symptom Possible Problem Solution Spark plug bridging? Check gap, insulation or replace spark plug. Carbon deposit on spark plug? Clean or replace spark plug. Short circuit due to defi cient spark plug Check spark plug insulation, replace if worn. insulation? Improper spark plug gap? Set to proper gap.
  • Page 45 TROUBLESHOOTING (ENGINE) Troubleshooting (Engine) - continued Symptom Possible Problem Solution Air cleaner dirty? Clean or replace air cleaner. Improper level in carburetor? Check fl oat adjustment, rebuild carburetor. Weak in power, compression is proper and does not misfi re. Defective spark plug? Clean or replace spark plug.

  • Page 46: Troubleshooting (Trowel)

    TROUBLESHOOTING (TROWEL) Troubleshooting (Walk-Behind Trowel) Symptom Possible Problem Solution Engine ON/OFF switch in OFF position Make sure that the Engine ON/OFF switch is ON or malfunctioning? or replace switch if necessary. Centrifugal ON/OFF switch in OFF Place centrifugal stop switch in ON position. position or malfunctioning? Check wiring.
  • Page 47 TROUBLESHOOTING (TROWEL) Troubleshooting (Walk-Behind Trowel) - continued Symptom Possible Problem Solution The main output shaft of the gearbox assembly should be checked for straightness. Main shaft? The main shaft must run straight and cannot be more than 0.003" (0.08 mm) out of round at the spider attachment point.

  • Page 48: Wiring Diagram

    WIRING DIAGRAM CENTRIFUGAL STOP SWITCH CHASSIS GND. SPARK OIL LEVEL ENGINE OIL ALERT IGNITION PLUG UNIT SWITCH STOP UNIT COIL SWITCH TRANSISTORIZED OIL LEVEL IGNITION UNIT INDICATOR CHASSIS GND. PAGE 48 — B46B90 WALK-BEHIND TROWEL • OPERATION MANUAL — REV. #0 (04/05/22)
  • Page 49 NOTES B46B90 WALK-BEHIND TROWEL • OPERATION MANUAL — REV. #0 (04/05/22) — PAGE 49...
  • Page 50 OPERATION MANUAL HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING UNITED STATES Multiquip Inc. (310) 537- 3700 6141 Katella Avenue Suite 200 Cypress, CA 90630 E-MAIL: mq@multiquip.com WEBSITE: www.multiquip.com UNITED KINGDOM CANADA Multiquip Multiquip (UK) Limited Head Offi...

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