OPERATOR’S SAFETY AND SERVICE MANUAL MK8 120 This manual covers the following serial numbers and higher for each model listed: MK8-120 . . . . . . . . . . . . . . . . . . 1770001 RIDE ON TROWELS MBW, Inc. MBW (UK) Ltd. 250 Hartford Rd • PO Box 440 Slinger, WI 53086-0440 Phone: (262) 644-5234 Fax: (262) 644-5169 Email: mbw@mbw.com Website: www.mbw.com Units 2 & 3 Cochrane Street Bolton BL3 6BN, England Phone: 01204 387784 Fax: 01204 387797 L18256 / 09.04.A ©MBW, Inc.
TABLE OF CONTENTS Safety Information . . . . . . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Changing Trowel Blades . . . . . . . . . . . . . . . . . . . . . . 7 Replacing The Battery . . . . . . . . . . .
WARNING CALIFORNIA PROPOSITION 65 WARNING Engine exhaust and some of its constituents are known in the state of California to cause cancer, birth defects, and other reproductive harm.
SAFETY INFORMATION Introduction SAFE DRESS: Do not wear loose clothing, rings, wristwatches, etc. near machinery. 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.
CAUTION Read the Operating Instructions before operating this piece of equipment. Keep unauthorized and untrained people away from this equipment. ROTATING & MOVING PARTS! Make sure all guards and safety devices are in place. Wear approved hearing protection, foot protection, eye protection and head protection. UNLEADED GASOLINE STOP SHUT OFF the motor before servicing or cleaning. DO NOT RUN in an enclosed area. The engine produces carbon monoxide, a POISONOUS GAS.
SPECIFICATIONS MK8 120 Dimensions 96.5 x 47.4 x 41in. (2450x1205x1040mm) Weight 661lbs. (300kg) Motor Briggs 31HP / Kohler 27HP Max Engine RPM 3600 RPM Min / Max Blade RPM 70 / 125 RPM Rotor Diameter 47.2in. (1200mm) Max Forward Speed 295 ft./min. (90 m/min.) Acoustic Level At Drivers Seat 92.3 (dB) Trowel Path 100in.
OPERATION Introduction Starting Engine 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. 1. Close the choke. Choking may not be necessary on warm engines. 2. Leave accelerator pedal at idle. This parts manual contains only standard parts. Variations of these parts as well as other special parts are not included.
Stopping in emergency conditions: subsequent smoothing operations continue increasing the blade inclination until obtaining the desired finish. The safety stop levers are connected to two micro switches which cut the electric power to the engine; in case of an emergency, immediately release the levers. The time between one pass and the next is determined by the temperature and by the amount of water in the concrete.
MAINTENANCE WARNING CAUTION Always follow the stopping procedure before servicing or lubricating the unit. Always verify fluid levels and check for leaks after changing fluids. After servicing the unit, replace and fasten all guards, shields, and covers to their original positions before resuming operation. Do not drain oil onto ground, into open streams, or down sewage drains.
2. Locate the sight gage on the outward side of the gearboxes. 3. Oil level should be centered in oil sight gage. Changing Trowel Blades WARNING Replacing the Oil 1. Lift the blade guard and secure it out of the way. 2. Remove the drain plug, located under the sight gage, and drain oil. 3. Replace drain plug. 4. 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. 5. Replace filler plug. 6.
Replacing The Battery Installing new belts 1. Install the replacement belts onto the clutch one at a time and roll them into there respective groove on the input sheave. Repeat this process for the remaining two belts. 2. Tighten tensioner bolt against idler bracket until belts have approximately ¼ to ½" deflection with moderate pressure applied to the back side of belts. 3. Tighten jam nut. 4. After unit is run belt tension should be rechecked and readjusted as needed.
SERVICE Torque Chart 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. SIZE 1/4-20 1/4-28 5/16-18 5/16-24 3/8-16 3/8-24 7/16-14 7/16-20 1/2-13 1/2-20 9/16-12 5/8-11 5/8-18 3/4-16 1-8 1-14 1-1/2-6 M6 M8 M 10 • Prior to assembly, wash all parts in a suitable cleaner or solvent. • Check moving parts for wear and failure.
REPLACEMENT PARTS The warranty is stated in this book on page 21. 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.
Main Assembly - 11 -
Tank Assemblies - 12 -
Control Assembly - 13 -
Drive Assembly - 14 -
Right Blade and Gearbox Assembly - 15 -
Left Blade and Gearbox Assembly - 16 -
Heavy Duty Clutch Engine Assembly, Kohler - 17 -
Engine Assembly, Briggs - 18 -
Frame Assembly - 19 -
18260 Lifting Sling 18027 Cart Accessories - 20 -
WARRANTY 1. 2. 3. MBW warrants each new machine against defects in material and workmanship under normal use and service for a period of six (6) months. This warranty commences the first day the machine is sold, assigned to a rental fleet, or otherwise put to first use. The obligation under this warranty is limited to the replacement or repair of parts and/or machine at MBW factory branches or at authorized MBW distributors. Machines altered or modified without MBW written consent voids this warranty.
