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(GX390RT2QNB2 GASOLINE ENGINE ELECTRIC START) Serial No. 110401 and ABOVE After January 2011 POWER BUGGY Revision #1 (06/18/15) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
PROPOSITION 65 WARNING Engine exhaust some its constituents, and some dust created by power sanding, sawing, grinding, drillingandotherconstructionactivities contains chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. Some examples of these chemicals are: Leadfromlead-basedpaints.
, 2006 Order via Internet (Dealers Only) Best Deal! If you have an MQ Account, to obtain a Username Order parts on-line using Multiquip’s SmartEquip website! and Password, E-mail us at: parts@multiquip. com. I View Parts Diagrams I Order Parts To obtain an MQ Account, contact your District Sales Manager for more information.
SAFETY INFORMATION Do not operate or service the equipment before reading Potential hazards associated with the operation of this the entire manual. Safety precautions should be followed equipment will be referenced with hazard symbols which at all times when operating this equipment. may appear throughout this manual in conjunction with Failure to read and understand the safety safety messages.
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NEVER use accessories or attachments that are not Avoid wearing jewelry or loose fi tting clothes that may recommended by Multiquip for this equipment. Damage snag on the controls or moving parts as this can cause to the equipment and/or injury to user may result.
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SAFETY INFORMATION POWER BUGGY SAFETY CAUTION ALWAYS inspect the surface over which you will travel. DANGER Look for holes, drop-offs and obstacles. Look for rough Engine fuel exhaust gases contain poisonous carbon and weak spots on docks, ramps or fl oor. Look for oil monoxide.
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SAFETY INFORMATION DO NOT operate the power buggy at excessive speeds. When filling or dumping DO NOT exceed payload Reckless operation may cause accidents and severe capacity of power buggy. injury. Slow down when approaching people, wet areas, ...
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SAFETY INFORMATION ALWAYS use extreme caution when working with ENGINE SAFETY fl ammable liquids. WARNING DO NOT fi ll the fuel tank while the engine is running DO NOT place hands or fingers inside or hot. engine compartment when engine is ...
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SAFETY INFORMATION TRANSPORTING SAFETY ALWAYS recharge the battery in a well-ventilated environment to avoid the risk of a dangerous concentration NOTICE of combustible gases. ALWAYS shutdown engine before transporting. If the battery liquid (dilute sulfuric acid) comes into contact with clothing or skin, ...
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SAFETY INFORMATION ENVIRONMENTAL SAFETY/DECOMMISSIONING EMISSIONS INFORMATION NOTICE NOTICE Decommissioning is a controlled process used to safely This equipment conforms with applicable Environmental retire a piece of equipment that is no longer serviceable. Protection Agency (EPA) and California Air Resources If the equipment poses an unacceptable and unrepairable Board (CARB) emission regulations.
SPECIFICATIONS (ENGINE) Table 2. Specifications (Engine) GX390RT2QTT (Recoil Start) Model GX390RT2QNB2 (Electric Start) 3.46 x 2.51 in. Bore X Stroke (88 x 64 mm.) Displacement 389 cc Maximum Power 11.7 hp (3,600 rpm) Maximum Torque 19.5 ft-lbs. (2.7 kg-m) @ 2,500 rpm Compression Ratio 8.0 : 1 Idle Speed...
GENERAL INFORMATION The MQ Whiteman Power Buggy, Models WBH16 (recoil The operator controls the forward and reverse machine start) and WBH16E (electric start) are intended for the travel by manually shifting the control valve which directs transportation of concrete, concrete spreading and spot the hydraulic fluid flow to the two drive wheel motors.
COMPONENTS Figure 2. WBH16/WBH16E Power Buggy Components 1. Tub or Bucket — Used for the transportation of 9. Operator Platform — When the buggy is in use, the operator shall ALWAYS stand on this platform while material. Tub holds approximately 16 cubic feet holding onto the handle bar (steering).
BASIC ENGINE GX390 Figure 3. Honda Engine 1. Throttle Lever — Used to adjust engine RPM speed 7. Spark Plugs — Provides spark to the ignition system. (lever advanced forward - SLOW, lever back toward Set spark plug gap to 0.70- 0.76 mm (0.028 - 0.030 in.) operator - FAST).
INSPECTION BEFORE STARTING Table 3. Oil Type Season Temperature Oil Type 1. Read safety information at the beginning of manual. Summer 25°C or Higher SAE 10W-30 2. Clean the machine, removing dirt and dust, particularly Spring/Fall 25°C~10°C SAE 10W-30/20 the engine cooling air inlet, carburetor and air cleaner. Winter 0°C or Lower SAE 10W-10...
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INSPECTION PARKING BRAKE CHECK Check the brakes as outlined in the maintenance section of this manual. LINKAGE CHECK Check and make sure that all linkages within the buggy are functioning correctly. STEERING CHECK 1. Check and make sure that the power buggy's steering turns freely and that there is no binding.
OPERATION 3. Place the engine fuel lever to the ON position. CAUTION (Figure 10). DO NOT attempt to operate the power buggy until the Safety Information, General Information, and Inspection sections of this manual have been read and thoroughly understood. ELECTRIC START (WBH16E ONLY) 1.
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OPERATION RECOIL START 6. Move the throttle lever halfway between the FAST and SLOW position (Figure 13) for starting. 1. Follow steps 1 through 6 of the Electric Start procedure. 2. Place the Engine ON/OFF switch (Figure 15) in the ON position.
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OPERATION PRE-CHECK 4. Place the power buggy's direction lever (Figure 19) in the forward direction. 1. Engage the parking brake lever (Figure 17) and attempt to rock the buggy back and forth. If the wheels turn during the rocking motion, adjust the brakes as outlined in the maintenance section of this manual.
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OPERATION EMERGENCY SHUTDOWN The WBH16/WBH16E is equipped with a safety kill switch. This switch is located on the right side of the handle bar. 1. Push the power buggy's kill switch inward (Figure 21) and listen for the engine to stop. KILL SWITCH Figure 20.
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OPERATION STEERING TRAVELING ON A SLOPE To steer the buggy, use the handle bar in front of the 1. When traveling on a slope, it is necessary to determine operator platform. the grade of the path. The WBH16/WBH16E can travel up, down or side to side on a maximum grade of 10% 1.
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OPERATION NOTICE NOTICE DO NOT activate dump mechanism (tub/bucket) if When going up or down a slope, always travel in the forward direction (Figure 24). buggy is facing down hill. The possibility exist of the buggy tipping over causing equipment damage and severe bodily harm.
Should any problems develop with the hydraulic drive • Above 40 °F. (13 °C.) - S.A.E. 30 motors, contact Multiquip's service department. • Below 40 °F. (13 °C.) - S.A.E. 20 BRAKE ADJUSTMENT ADDING HYDRAULIC OIL Brake adjustment can be made on the brake linkage rod located on the right-side of the buggy.
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MAINTENANCE PUMP CONTROL LEVER ADJUSTMENT Table 4. Tire Wear Troubleshooting WEAR PATTERN CAUSE SOLUTION Inspect the speed control return springs. The tension should Adjust pressure to be sufficient to allow lever to snap back when released. Over Inflation particular load per Center Wear tire manufacturer.
TROUBLESHOOTING Troubleshooting (Power Buggy) Symptom Possible Problem Solution Adjust speed control cable. Replace cable if Speed control cable out of adjustment? necessary Hydraulic oil level low.? Check hydraulic oil level. Add oil if necessary. Loss of Power. Contaminated hydraulic oil fi lter? Replace hydraulic oil fi lter.
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TROUBLESHOOTING 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.
TROUBLESHOOTING 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.
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NOTES WBH16/WBH16E POWER BUGGY (S/N 110401 & UP)• OPERATION AND PARTS MANUAL — REV. #1 (06/18/15) — PAGE 31...
A blank entry generally indicates that the item is not sold “Not Sold Separately” — Indicates that an item cannot separately or is not sold by Multiquip. Other entries will be purchased as a separate item and is either part of an be clarifi ed in the “Remarks”...
NAMEPLATE AND DECALS 18247 TRAVEL NEUTRAL LIFT 513608 LIFT 18245 WARNING! SURFACE AREA 18248 WBH16 LIFT 513608 MQ WHITEMAN SAFETY INSTRUCTIONS OPERATE AT SAFE SPEEDS ONLY READ OPERATOR’S MANUAL BEFORE STARTING PLACE IN NEUTRAL BEFORE STARTING NO UNAUTHORIZED/UNTRAINED OPERATORS NO RIDERS BE SURE ALL SAFETY DEVICES ARE OPERATIONAL AND IN PLACE BEFORE STARTING THE ENGINE DISCONNECT SPARK PLUG BEFORE SERVICE...
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NAMEPLATE AND DECALS PART NO. PART NAME QTY. REMARKS 18252 DECAL, WBH16 18251 DECAL, MQ WHITEMAN EM985 DECAL, HYDRAULIC OIL 513608 DECAL, LIFTING HOOK 18245 DECAL, FORKLIFT LIFTING 18247 DECAL, CRUSH WARNING 18248 DECAL, HOT SURFACE WARNING DECAL, BUCKET DUMP LEVER ......1....NOT AVAILABLE DECAL, TRAVEL LEVER DIRECTION ....1....NOT AVAILABLE DECAL, WHITEMAN SAFETY INSTRUCTIONS ..1....NOT AVAILABLE DECAL, GASOLINE ONLY ........1....NOT AVAILABLE...
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HYDRAULIC DRIVE ASSY. VIEW FROM OPERATOR’S PLATFORM SEAL KIT DRIVE MOTOR LEFT DRIVE MOTOR SEAL KIT RIGHT DIRECTIONAL DRIVE MOTOR VALVE PNEUMATIC FOAM FILLED PAGE 38 — WBH16/WBH16E POWER BUGGY (S/N 110401 & UP) • OPERATION AND PARTSMANUAL — REV. #1 (06/18/15)
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HYDRAULIC DRIVE ASSY. PART NO. PART NAME QTY. REMARKS 18058 VALVE, DIRECTION CONTROL, TRAVEL 18058SK SEAL KIT, DIRECTIOAL VALVE 18264M HOSE, DIRECTION VALVE TO DRV. MOTOR 1 511810 ADAPTER, ELBOW 18276M HOSE, LH HYDRAULIC MOTOR 512189 ADAPTER, T - CONNECTOR 492527 NUT, HEX 1/2-20 18029...
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HYDRAULIC PUMP ASSY. DRIVE ASSY. DIRECTION VALVE HYDRAULIC OIL TANK ASSY. HYDRAULIC OIL FILTER DUMP VALVE DUMP HANDLE ASSY. PAGE 40 — WBH16/WBH16E POWER BUGGY (S/N 110401 & UP) • OPERATION AND PARTSMANUAL — REV. #1 (06/18/15)
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HYDRAULIC PUMP ASSY. PART NO. PART NAME QTY. REMARKS 18035 PUMP, HYDRAULIC 511808 ADAPTER, STRAIGHT 3365 ADAPTER, STRAIGHT 18256M HOSE, PUMP TO DUMP VALVE 18258M HOSE, FILTER TO PUMP 18261M HOSE, PUMP TO TANK 18263M HOSE, PUMP TO DIRECTION VALVE 512190 ADAPTER, STRAIGHT 18257M...
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HYDRAULIC DUMP ASSY. CONNECT TO HYDRAULIC PUMP ASSY ITEM 9 SEAL KIT DUMP CYLINDER CONNECT TO HYDRAULIC PUMP ASSY ITEM 4 DUMP VALVE PAGE 42 — WBH16/WBH16E POWER BUGGY (S/N 110401 & UP) • OPERATION AND PARTSMANUAL — REV. #1 (06/18/15)
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HYDRAULIC DUMP ASSY. PART NO. PART NAME QTY. REMARKS 18022 CYLINDER, HYDRAULIC DUMP 18022SK SEAL KIT, DUMP CYLINDER 491705 ZERK FITTING 511803 ADAPTER, ELBOW 18020 HOSE, DUMP VALVE TO HYD. PISTON 511804 ADAPTER, STRAIGHT 512234 ADAPTER, ELBOW 511806 ADAPTER, STRAIGHT 506191 ADAPTER, ELBOW WBH16/WBH16E POWER BUGGY (S/N 110401 &...
PUMP AND COUPLING ASSY. Engine HYDRAULIC PUMP NOTES: ITEMS 2A THROUGH 2D NOT INCLUDED WITH ITEM 2. FRAME PAGE 44 — WBH16/WBH16E POWER BUGGY (S/N 110401 & UP) • OPERATION AND PARTSMANUAL — REV. #1 (06/18/15)
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PUMP AND COUPLING ASSY. PART NO. PART NAME QTY. REMARKS 492472 SCREW, ALLEN HEAD 3/8-16 X 3/4 18051 COUPLING, ENGINE SHAFT ......1....INCLUDES ITEM W/# 18051RS SPIDER, URETHANE 492356 SCREW, 1/4 x 3/4 IN. G5 492622 WASHER, LOCK 1/4 IN. EM923057 WASHER, FLAT 3/4 IN.
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TUB ASSY. DASHED ( ) ITEMS ARE LOCATED ON THE UNDERSIDE OF THE BASE PLATE LOCATED ON THE BACKSIDE OF COUNTERWEIGHT PAGE 46 — WBH16/WBH16E POWER BUGGY (S/N 110401 & UP) • OPERATION AND PARTSMANUAL — REV. #1 (06/18/15)
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TUB ASSY. PART NO. PART NAME QTY. REMARKS 18004 TUB, PLASTIC 492313 SCREW, HHC 3/8-16 X 1-1/2 512193 WASHER, FLAT 3/8 LARGE 492598 WASHER, FLAT 3/8 490957 RING, SNAP 18130 PIN, HYD. PISTON CROSS 18129 PIN, TUB FRAME CROSS 492365 SCREW, HHC 5/16-18 X 1-1/4 492597 WASHER, FLAT 9.5 X 22.2...
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BATTERY ASSY. (ELECTRIC START) PART NO. PART NAME QTY. REMARKS 505500 WINGNUT 512557 BATTERY CABLE, NEGATIVE 511250 BATTERY CABLE, POSITIVE 512555 BATTERY SUPPORT BRACKET 492596 WASHER, FLAT 1/4" 492622 WASHER, LOCK 1/4" 492595 WASHER, FLAT 3/16" 508480 BATTERY SUPPORT PLATFORM 503118 BOLT 3/16"...
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FUEL ASSY. TO ENGINE CARBURETOR AIR FILTER 1/4” INLET PORT 3/16” 3/16” 5.5 IN. 140 MM 3/16” HOSE REDUCER 1/4” 1/4” 1/4” TANK PORT PURGE PORT REF. ONLY LEFT SIDE PANEL PAGE 62 — WBH16/WBH16E POWER BUGGY (S/N 110401 & UP) • OPERATION AND PARTSMANUAL — REV. #1 (06/18/15)
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FUEL ASSY. PART NO. PART NAME QTY. REMARKS 520820 CAP, FUEL (EPA) 802006 FUEL TANK NECK SEAL 800845 COVER, FUEL TANK, FRONT 515386 COVER, FUEL TANK, REAR 492356 SCREW, 1/4 x 3/4 IN. G5 492622 WASHER, LOCK 1/4 IN. 509161 WASHER, FLAT 1/4 IN.
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ENGINE ASSY. S/N 130149 AND BELOW) REGULATOR MODEL WBH16E ONLY NOTES: 1 MUFFLER GUARD AND ASSOCIATED HARDWARE ARE NO LONGER AVAILABLE. REF. PANEL ASSY., ITEM 15 FOR REPLACEMENT MUFFLER GUARD. PAGE 64 — WBH16/WBH16E POWER BUGGY (S/N 110401 & UP) • OPERATION AND PARTSMANUAL — REV. #1 (06/18/15)
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ENGINE ASSY. S/N 130149 AND BELOW) PART NO. PART NAME QTY. REMARKS GX390RT2QTT ENGINE, HONDA 11 HP RECOIL START GX390RT2QNB2 ENGINE, HONDA 11 HP ELECTRIC START 1 801029 GUARD, MUFFLER ...........1....NO LONGER AVAILABLE REF. PANEL ASSY. ITEM 15 503118 BOLT, 3/16" NC X 1" G2 512512 SPACER 492595...
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