MK8-121 Manual
Contents
1. 4 Mal ASSEmDIV sd eode Se SSS ba ai 11 Stopping Engine 5 Tank Assemblies 12 Hydraulic pressure regulation 5 Control Assembly endi Samma ee ERE ws 13 PUMP ASSONDIVMa actes ees 14 Maintenance 6 Drive Assembly 15 Maintenance Schedule 6 Right Blade and Gearbox Assembly 16 Iud LOVES 35 eg da euo ng og ar ROS Eae ds 6 Left Blade and Gearbox Assembly 17 Engine Maintenance 6 Engine Assembly Briggs 18 Engine 5 6 Frame Assembly 19 CICANING sid kaa ata E RUN a SS 6 Reduction Gear Oil 20 WARNING CALIFORNIA PROPOSITION 65 WARNING Engine exhaust and some ofits constituents are known in the state of California to cause cancer birth defects and other reproductive harm SAFETY INFORMATION Introduction This Safety Alert Symbol is used to call attention to items or operations which may be dangerous to those operating or working with this equipment The symbol can be found throughout this manual and on the unit Please read these warnings and cautions along with all decals carefully before attempting to operate the unit Make sure every individual who ope2. prior written consent This warranty does not cover the use of parts not specifically approved by MBW for use on MBW products This warranty does not cover misuse neglect shipping damage accidents acts of God the operation of any New Machine or Demonstration Machine in any way other than recommended by MBW in accordance with its specifications or any other circumstances beyond MBW s control This warranty does not cover any New Machine or Demonstration Machine repaired by anyone other than MBW factory branches or authorized MBW distributors 3 This warranty does not cover and MBW affirmatively disclaims liability for any damage or injury resulting directly or indirectly from design materials or operation of a New Machine or Demonstration Machine or any other MBW product MBW s liability with respect to any breach of warranty shall be limited to the provisions of this document and in no event shall exceed an amount equal to the purchase price of the New Machine or Demonstration Machine purchased from MBW 4 This warranty does not cover engines motors and other assemblies or components produced by other manufacturers and used on a New Machine or Demonstration Machine as said engines motors and other assemblies or components may have warranties provided by the manufacturer thereof This warranty does not apply to consumable items such as v belts filters trowel and screed blades seals shock mounts batteries and the like all of w
3. put to first use MBW warrants each Demonstration Machine against defects in material and workmanship for a period of six 6 months Demonstration Machine means a machine used by MBW or its agents for promotional purposes This warranty commences on the first day the machine is sold assigned to a rental fleet or otherwise put to first use This warranty covers the labor cost for replacement or repair of parts components or equipment on New Machines or Demonstration Machines and MBW shall pay labor costs at MBW s prevailing rate to affect the warranted repair or replacement MBW reserves the right to adjust labor claims on a claim by claim basis This warranty covers the shipping cost of replacement parts components or equipment via common ground carriers from MBW to an authorized MBW dealer Air freight is considered only in cases where ground transportation is not practical MAY THIS WARRANTY BE TRANSFERRED This warranty is non transferable and only applies to the original end user of a new machine or demonstration machine WHAT DOES THIS WARRANTY NOT COVER 1 This warranty does not cover any Used Equipment Used Equipment means any MBW machine or equipment that is not a New Machine or a Demonstration Machine All Used Equipment is sold AS IS WHERE IS WITH ALL FAULTS 2 This warranty does not cover any New Machine Demonstration Machine or their equipment parts or components altered or modified in any way without MBW s
4. ID VOLUME RECOMMENDED OIL Refer to engine operator owner manual Engine Maintenance Refer to the engine owners manual for maintenance intervals and procedures Engine Speed The engine speed is factory preset according to the speeds listed in the Specifications section Do not tamper with the governor settings The governor establishes safe operating limits that must not be exceeded Cleaning Clean the float machine at the end of each working day to prevent the cement from hardening on the machine Wash the dirty parts with a brush and water Wet the parts exposed to cement with stripping oil never fuel oil Do not oil the rubber moving parts belts etc Reduction Gear Oil Checking the Oil 1 Make sure machine is off 2 Locate the sight gage on the outward side of the gearboxes 3 Oil level should be centered in oil sight gage Replacing the Oil 1 Liftthe blade guard and secure it out of the way 2 Remove the drain plug located under the sight gage and drain oil Replace drain plug Remove filler plug located above sight gage and fill until the sight gage is half full Refer to Fluid levels on page 6 for type and quantity Replace filler plug Lower and secure the guard back to working position Lifting WARNING Never leave the floats attached to the float machine when lifting it more than 3ft off the ground since it could detach and cause damage to people and things To l
5. Mountthe new blades fixing a 5 16 x 1 3 4 bolt in the hole with the bushing and the smallest two of the holes 7 When the blades have been mounted lower the trowel to the ground 8 Reposition the guard and tighten the bolts Correct attachment of standard blades Replacing The Battery WARNING Handle the battery with particular care since it contains acid 1 Remove the battery cover by unhooking the two hooks Remove the negative cable first Remove the battery and replace it with one with the same characteristics 45 Ah Replacing The Floats CAUTION Be careful when installing the floats one rotor turns clockwise and the other counterclockwise therefore you need to check that the various com ponents have been properly arranged Before mounting the floats check that the blades are clean The blades must be placed in horizontal position using the pitch control Slightly lift the float machine off the ground about 4 Mount the floats on the blades checking the correct direction of rotation When the floats have been mounted reposition the float machine on the ground SERVICE Assembly and disassembly should be performed by a service technician who has been factory trained on MBW equipment The unit should be clean and free of debris Pressure washing before disassembly is recommended Prior to assembly wash all parts in a suitable cleaner or solvent Check mov
6. OPERATOR S SAFETY AND SERVICE MANUAL MKS 121 This manual covers the following serial numbers and higher for each model listed MIKO A PR 1790001 RIDE ON TROWELS MBW Inc MBW UK Ltd MBW France S A R L 250 Hartford Rd PO Box 440 Units 2 amp 3 Cochrane Street Z A d Outreville Slinger WI 53086 0440 Bolton BL3 6BN England 11 rue Jean Baptiste N ron Phone 262 644 5234 Phone 01204 387784 60540 BORNEL France Fax 262 644 5169 Fax 01204 387797 Phone 3 44 07 15 96 L19342 02 07 A Email mow mbw com Fax 3 44 07 41 28 MBW Inc 2007 Website www mbw com Printed in the USA TABLE OF CONTENTS Safety Information 1 EIN eie ie oe re CE ora PV aia 7 PENNE RT 1 Storage E Safety Precautions 1 Changing Trowel Blades 4 Safety Decals 1 PRE 8 Replacing The Floats 8 Specifications 3 SEVICE 9 Operation 4 L IGUS 9 INMOGUCUON aaa E 4 Parts Replacement Cycles and Tolerances 9 Before Starting amp Operating 4 Stating ENGNG uu dioc E E diode Es 4 Replacement Parts 10 Operating
7. TY OR WARRANTY IN CONNECTION WITH THE SALE OR SERVICE OF ANY NEW MACHINE DEMONSTRATION MACHINE OR ANY OTHER MBW PRODUCT 20
8. area of at least 3 000 square feet and that there is a sufficient area around the machine at least 6 ft oee that the blade is inclined by at least 1 2 in order to have better control over the float machine when starting Adjust seat if necessary Make sure the two drive control levers are vertical and adjust if necessary Starting Engine 1 Close the choke Choking may not be necessary on warm engines Leave accelerator pedal at idle Hold one emergency stop lever closed and turn the start key 4 Open the choke once engine is warm Operating CAUTION To avoid premature clutch wear it is necessary to accelerate quickly upon start up then back the throttle off to the desired speed after the clutch is fully engaged To drive the machine in the desired direction there are two control levers Move the controls slowly and smoothly To stop the float machine return the control levers to the rest position The control lever positions and the relevant movements are described on page 5 of this manual Preparing the surface Use a mechanical vibrating float or manual float to level the floor surface in order to obtain a well compacted concrete footing and thus prepare the ideal surface for floating and finishing The float machine does not improve flatness of a badly floated or uneven floor Floating phase The floor is ready for the first pass when the imprint of the shoe heel sinks into the concrete by abou
9. ased from authorized MBW distributors Write Model Number here Write Serial Number here Contact Information Decal The units serial number can be found in the following locations Decal on the seat post MBW Inc 250 Hartford Rd PO Box 440 Slinger WI 53086 0440 Phone 262 644 5234 Fax 262 644 5169 Email mbow mbw com Website www mbw com 10 MBW UK Ltd Units 2 amp 3 Cochrane Street Bolton BL3 6BN England Phone 01204 387784 Fax 01204 387797 Email mbwuk btinternet com MBW France S A R L Z A d Outerville 11 rue Jean Baptiste N ron 60540 BORNEL France Email mowfrance free fr Main Assembly 11 1935 P p 0754 40050 Tank Assemblies 12 Control Assembly 13 Pump Assembly 14 Drive Assembly ma Right Blade and Gearbox Assembly 16 iu a r m A N N V Left Blade and Gearbox Assembly 17 Engine Assembly Briggs 18 Frame Assembly 19 WARRANTY WHAT DOES THIS WARRANTY COVER MBW Incorporated MBW warrants each New Machine against defects in material and workmanship for a period of twelve 12 months New Machine means a machine shipped directly from MBW or authorized MBW dealer to the end user This warranty commences on the first day the machine is sold assigned to a rental fleet or otherwise
10. e fails Warranty claims must be submitted to MBW Inc MBW UK Ltd or MBW FRANCE SARL and written authorization for the return of merchandise or parts under the warranty must be obtained before shipment to MBW WHAT WILL MBW DO MBW s obligation under this warranty is limited to the replacement or repair of parts for a New Machine or Demonstration Machine at MBW factory branches or at authorized MBW distributors and such replacement or repair is the exclusive remedy provided hereunder Labor must be performed at an authorized MBW distributor MBW reserves the right to inspect and render a final decision on each warranty case and MBW s repair or replacement is solely within the discretion of MBW IT IS EXPRESSLY AGREED THAT THIS SHALL BE THE SOLE AND EXCLUSIVE REMEDY UNDER THIS WARRANTY UNDER NO CIRCUMSTANCES SHALL MBW BE LIABLE FOR ANY COSTS LOSS EXPENSE DAMAGES SPECIAL DAMAGES INCIDENTAL DAMAGES OR PUNITIVE DAMAGES ARISING DIRECTLY OR INDIRECTLY FROM THE USE OF THE NEW MACHINE OR DEMONSTRATION MACHINE WHETHER BASED UPON WARRANTY CONTRACT NEGLIGENCE STRICT LIABILITY OR ANY OTHER LEGAL THEORY THE FOREGOING WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY FITNESS FOR USE AND FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER OBLIGATIONS OR LIABILITY ON MBW S PART MBW NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME ON BEHALF OF MBW ANY OTHER LIABILI
11. he following page s A WATER UNLEADED jan GASOLINE a 18002 Machine may fall and cause injury or damage if lifted improperly OPERATI NG mop INSTRUCTIONS HOT SURFACE DO NOT TOUCH SURFACE CHAUDE NE PAS TOUCHER i HEAD OWNERS MANUAL before attempting to start or operate this 1 9341 0931 1 N OT D ECAL S ET eck engine oil and trowel gearbox oil ine switch to on in AO ROTATING PARTS can crush and cut Keep hands away 12573 ENGINE OIL DRAIN 18006 EN AN OW ROTATING BLADES CAN CRUSH AND CUT KEEP HANDS CLEAR owBRIDER P O v E R R O W E L 18003 NOT IN DECAL SET 09867 NOT IN DECAL SET Safety Decals Decal Set 18007 SPECIFICATIONS SS E WM ITS E Weir NE NM Vu Aie Me BN E 190 es PL DUE a A E or Dun SST TT RE ac SE SAN sen mr mm mp im wA 5 cnim mm pm Um M AE E M TUAM IT D RER Lee r MAI ee esc Mr i lt ET JA i EAN us E me ZA Em us e imd Tig hd ins im a te Buc x Lu m 1235BH Dimensions Zion weight see _ meer Bis Min Max Blade RPM 70 170RPM Rotor Diameter 47 2in 120mm Max Forward Speed 295ft min 90 m min Sound Level At Drivers 92 3 db Seat Trowel Path 100
12. hich are sold AS IS WHERE IS WITH ALL FAULTS 5 This warranty does not cover the cost of transportation and other expenses which may be connected with warranty service but not specifically mentioned herein 6 This warranty does not cover any updates to any New Machine Demonstration Machine or any other MBW product MBW reserves the right to improve or make product changes without incurring any obligation to update refit or install the same on New Machines or Demonstration Machines previously sold WHAT MUST YOU DO TO OBTAIN WARRANTY COVERAGE Each New Machine or Demonstration Machine is accompanied by a Warranty Registration Card You must sign date and return the Warranty Registration Card to the place of origin of the New Machine or Demonstration Machine either to MBW Inc at P O Box 440 Slinger Wisconsin 53086 MBW UK Ltd at Units 2 amp 3 Cochrane Street Bolton BL3 6BN United Kingdom or MBW FRANCE SARL at ZA D Outreville 5 Rue Jean Baptiste Neron Bornel 60540 France within ten 10 days after purchase assignment to a rental fleet or first use This signed warranty card is the buyer s affirmation that he has read understood and accepted the warranty at the time of purchase Failure to return the warranty card as specified herein renders the warranty null and void In order to receive warranty coverage consideration warranty claims must be submitted within thirty 30 days after the New Machine or Demonstration Machin
13. housing or Bearings shaft Engine Components Refer to your engine manufacturer s Owner s Manual Replace any worn or damaged hardware as needed Replacement hardware should Hardware be grade 5 zinc plated unless otherwise specified Safety Decals Replace if they become damaged or illegible Seals amp Gaskets Replace if a leak is detected and at every overhaul or teardown V Belts Replace if cracked torn or stretched to the point the belt won t tension properly REPLACEMENT PARTS The warranty is stated in this book on page 20 Failure to return the Warranty Registration Card renders the warranty null and void MBW has established a network of reputable distributors dealers with trained mechanics and full facilities for maintenance and rebuilding and to carry an adequate parts stock in all areas of the country Their sales engineers are available for professional consultation If you cannot locate an MBW distributor in your area contact MBW or one of our oales Branches listed below When ordering replacement parts be sure to have the following information available Model and Serial Number of machine when ordering MBW parts Model and Serial Number of engine when ordering engine parts e Part Number Description and Quantity Company Name Address Zip Code and Purchase Order Number Preferred method of shipping REMEMBER You own the best If repairs are needed use only MBW parts purch
14. ift the machine from one level to another use a hoisting crane or lift truck of suitable capacity Weight can be found in Specifications page 3 To transport the machine on a truck place the blades in horizontal position using the control knobs transporting the float machine with the blades inclined may damage the blade tilt system Storage WARNING Never store the machine with fuel in the tank in places where the fuel vapors might come into contact with flames and or sparks If you know that the machine will not be used for more than one month drain the fuel from the tank in order to prevent the formation of rubbery deposits and disconnect the battery If storing the machine in places where the temperature might drop to below freezing drain the water tank Changing Trowel Blades WARNING Trowel blade edges may be sharp when they are worn Wear protective gloves when handling the blades Always check the state of wear of the blades and if they are damaged or bent replace them They must all be replaced at the same time 1 Clean the machine 2 Open the guard by unscrewing the two fixing bolts and hook the guard to the chain 3 Slightly lift the float machine off the ground about 4 4 Remove the blades by removing the bolts through the arm To replace the metric blades with standard you will need to use a bushing kit 9 Use one bushing per blade in hole closest to the spider 6
15. in 2540mm Specifications subject to change without notice OPERATION Introduction MBW equipment is intended for use in very severe applications They are powered by four cycle engines and are available in different sizes and a selection of engines This parts manual contains only standard parts Variations of these parts as well as other special parts are not included Contact your local MBW distributor for assistance in identifying parts not included in this manual Before Starting amp Operating REMEMBER t is the owners responsibility to communicate information on the safe use and proper operation of this unit to the operators Review ALL of the Safety Precautions listed on page 1 of this manual Familiarize yourself with the operation of the machine and confirm that all controls function properly Know how to STOP the machine in case of an emergency Make sure hands feet and clothing are at a safe distance from any moving parts OIL LEVEL Check the oil level in the engine For more information see Lubrication under the respective engine s Owners Manual or the Maintenance section of this manual AIR CLEANER Check to ensure element is in good condition and properly installed FUEL SUPPLY The engines on MBW equipment require an automotive grade of clean fresh unleaded gasoline FUEL FILTER If clogged or damaged replace Make sure the machine is on a flat surface with a working
16. ing parts for wear and failure Refer to the Replacement section in this manual for tolerance and replacement cycles All shafts and housings should be oiled prior to pressing bearings Also ensure that the bearings are pressed square and are seated properly All bearings should be replaced when rebuilding any exciter or gearbox All gaskets and seals should be replaced after any disassembly Torque Chart 1 4 20 1 4 28 5 16 18 5 16 24 3 8 16 3 8 24 1116 14 7116 20 1 2 13 1 2 20 9 16 12 5 8 11 5 8 18 3 4 16 1 8 1 14 49 in lbs 56 in Ibs 8 ft lbs 9 ft lbs 15 ft lbs 17 ft lbs 24 ft lbs 27 ft lbs 37 ft lbs 41 ft lbs 53 ft lbs 73 ft lbs 83 ft lbs 144 ft lbs 188 ft lbs 210 ft lbs 76 in Ibs 87 in lbs 13 ft lbs 14 ft lbs 23 ft lbs 26 ft lbs 37 ft lbs 41 ft lbs 57 ft lbs 64 ft lbs 82 ft lbs 112 ft lbs 112 ft lbs 200 ft lbs 483 ft lbs 041 ft lbs GRADE 8 9 ft lbs 10 ft lbs 18 ft lbs 20 ft lbs 33 ft lbs 37 ft lbs 52 ft lbs 58 ft lbs 80 ft lbs 90 ft lbs 115 ft lbs 159 ft lbs 180 ft lbs 315 ft lbs 682 ft lbs 764 ft lbs 2371 ft lbs 7 ft lbs 18 ft lbs 30 ft lbs 1 1 2 6 652 ft lbs M6 3 ft lbs M8 6 ft lbs 10 ft lbs M 10 10 ft lbs 20 ft lbs CONVERSIONS inelbs x 0 083 ft lbs ft lbs x 12 in lbs ft lbs x 0 1383 kgm ft lbs x 1 3558 Nem 1462 ft lbs 4 ft lbs Parts Replacement Cycles and Tolerances Replace anytime a bearing is rough binding discolored or removed from
17. of the MK8 121 controls the sensitivity of the controls and may vary between 10 and 20 bar 145 290 PSI The regulator and gauge is located behind the seat WARNING Always stop the engine before Adding fuel Leaving the equipment unattended for any amount of time Before making any repairs or adjustments to the machine Moving Backwards Pull both control levers back Moving to the Right Push control lever right Moving to the Left Push control lever left Right turn Push the left control lever forward and pull the right control lever back Left turn Push the right control lever forward and pull the left control lever back Fig 1 Control MAINTENANCE WARNING CAUTION Always follow the stopping procedure before Always verify fluid levels and check for leaks after servicing or lubricating the unit changing fluids After servicing the unit replace and fasten all Do not drain oil onto ground into open streams guards shields and covers to their original or down sewage drains positions before resuming operation Maintenance Schedule SYSTEM MAINTENANCE DAILY WEEKLY poc YEARLY RC CS X _ p ES OS jee ES X ES EN NN CT rears Check all hardware after the first 5 hours of use then follow the maintenance schedule Fluid Levels SYSTEM FLU
18. rates or works with this equipment is familiar with all safety precautions WARNING GENERAL WARNING Indicates information important to the proper operation of the equipment Failure to observe may result in damage to the equipment and or severe bodily injury or death A CAUTION GENERAL CAUTION Indicates information important to the proper operation of the equipment Failure to observe may result in damage to the equipment Safety Precautions LETHAL EXHAUST GAS An internal combustion engine discharges carbon monoxide a poisonous odorless invisible gas Death or serious illness may result if inhaled Operate only in an area with proper ventilation NEVER OPERATE IN A CONFINED AREA DANGEROUS FUELS Use extreme caution when storing handling and using fuels as they are highly volatile and explosive in vapor state Do not add fuel while engine is running otop and cool the engine before adding fuel DO NOT SMOKE SAFETY GUARDS t is the owner s responsibility to ensure that all guards and shields are in place and in working order IGNITION SYSTEMS Breakerless magneto and battery ignition systems can cause severe electrical shocks Avoid contacting these units or their wiring SAFE DRESS Do not wear loose clothing rings wristwatches etc near machinery NOISE PROTECTION Wear OSHA specified hearing protection devices EYE PROTECTION Wear OSHA specified eye shields
19. safety glasses and sweat bands FOOT PROTECTION Wear OSHA specified steel tipped safety shoes HEAD PROTECTION Wear OSHA specified safety helmets DUST PROTECTION Wear OSHA specified dust mask or respirator OPERATOR Keep children and bystanders off and away from the equipment ei eG REFERENCES For details on safety rules and regulations in the United States contact your local Occupational Safety and Health Administration OSHA office Equipment operated in other countries must be operated and serviced in accordance and compliance with any and all safety requirements of that country The publication of these safety precautions is done for your information MBW does not by the publication of these precautions imply or in any way represent that these are the sum of all dangers present near MBW equipment If you are operating MBW equipment it is your responsibility to insure that such operation is in full accordance with all applicable safety requirements and codes All requirements of the United States Federal Occupational Safety and Health Administration Act must be met when operated in areas that are under the jurisdiction of that United States Department Safety Decals Carefully read and follow all safety decals Keep them in good condition If decals become damaged replace as required If repainting the unit replace all decals Decals are available from authorized MBW distributors Order the decal set listed on t
20. t 1 8 when walking on it On average about 2700 3200 square feet of surface are floated in 10 minutes Speed varies with conditions When the concrete is still fresh take care not to work continuously on the same spot since due to the weight of the float machine you may create an uneven floor surface During the floating phase the floats must not chatter on the surface this might be caused by dirt between the blades and the floats Finishing phase When floating has been completed detach the floats from the blades and clean the cement that has collected during the floating phase off the blades the spider and the protection rim Turn the blade lifting knob clockwise until the blades are inclined by about 1 2 for the first pass for the subsequent smoothing operations continue increasing the blade inclination until obtaining the desired finish The time between one pass and the next is determined by the temperature and by the amount of water in the concrete If the concrete has hardened too quickly in some areas it can be moistened by spraying a small amount of water using the button located on the left control bar in order to obtain the degree of finish desired Stopping Engine 1 Release the accelerator pedal to idle and turn off the key 2 Close the fuel valve and remove the start key from the engine Moving Forward Push both control levers forward Hydraulic pressure regulation The hydraulic operating pressure
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