OPERATOR’S SAFETY AND SERVICE MANUAL SCREEDEMON This manual covers the following serial numbers and higher for each model listed: WS500 . . . . . . . . . . . . . . . . . . . 1410030 WET SCREED MBW, Inc. MBW (UK) Ltd. MBW France S.A.R.L 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 Z.A.
TABLE OF CONTENTS Safety Information . . . . . . . . . . . . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Decals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maintenance Schedule. . . . . . . . . . . . . . . . . .
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.
U.S.
SPECIFICATIONS 500H 500H 500R Operating Weight 29 lbs (13.2 kg) 29 lbs (13.2 kg) Engine Make Honda Robin Engine Model GX35NTT3 EH035V Displacement 3) (2.04 in3) 33.5 cm3 (2.13 in 35 cm3 Spark Plug NGK CMR5H NGK CMR6A Electrode Gap 0.024 -0.028in (0.6-0.7mm) 0.024 -0.028in (0.6-0.7mm) Engine Oil Type SAE 10W30 SAE 10W30 Engine Oil Capacity 3.4 oz (0.1L) 3.4 oz (0.1 L) Fuel Type Regular Unleaded Regular Unleaded Fuel Tank Capacity 0.17 gal (0.64 L) 0.17 gal (0.
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. Bolt 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. Exciter Clamping Plate Before Starting & Operating Float Blade Figure 1.
Operation Before placing the ScreeDemon in concrete make sure the clamps securing the exciter to the float blade are tight. Blade Length A CAUTION Keep the blade clamps tight at all times. Operating the ScreeDemon with the clamps loose will damage the float blade. A 12-18" CAUTION Never run the ScreeDemon above idle when the float blade is not in contact with concrete. This can damage the float blade. A A The ScreeDemon can be used with or without forms.
Handle Adjustment The operator can adjust the handle on the ScreeDemon to a comfortable position. Handle Adjustment Knob Refer to Figure 2. 1. Loosen the handle by turning the handle adjustment knob counter-clockwise. 2. Move the handle to the desired position. 3. Tighten the handle adjustment knob. Kickstand Kickstand The kickstand will support the ScreeDemon in an upright position when not in use. Figure 2. Transporting It is recommended to transport the ScreeDemon with the float bar removed.
MAINTENANCE WARNING CAUTION Always exercise 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.
SERVICE Engine Mounting Flange Removal 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. Cleaning unit before disassembly is recommended. Refer to Engine and Engine Mount, page 16. • Prior to assembly, wash all parts in a suitable cleaner or solvent. • Check moving parts for wear and failure. Refer to the Replacement section in this manual for tolerance and replacement cycles. 1.
2. Loosen the three socket head cap screws (#13) securing the exciter cover (#8) to the exciter housing. Back the socket head cap screws out about 1/4”. 3. Gently tap on the socket head cap screws with a rubber mallet to push the exciter cover out of the exciter housing. 4. Remove the socket head cap screws and the fiber washers (#11) after the exciter cover is free from the exciter housing. 5. Remove the bearings (#5) from the exciter housing, exciter cover, and exciter shaft. 6.
Parts Replacement Cycles and Tolerances Bearings Replace anytime a bearing is rough, binding, discolored or removed from housing or shaft. Engine Components Refer to your engine manufacturer’s Owner’s Manual. Hardware Replace any worn or damaged hardware as needed. Replacement hardware should be grade 5 and zinc plated unless otherwise specified. Safety Decals Replace if they become damaged or illegible. Seals, O-rings, & Gaskets Replace if a leak is detected and at every overhaul or teardown.
REPLACEMENT PARTS The warranty is stated in this book on page 18. 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.
10 14 18 6 23 4 7 20 19 5 1 12 22 3 11 26 22 27 25 9 24 13 21 8 15 2 27 26 17 16 Main Assembly - 12 -
DD ITEM 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. PART NO. 18472 17170 17245 17263 17639 17647 17649 17651 17727 17656 17660 17661 17662 17719 17726 17804 17806 17808 17810 17812 17814 17816 17818* 17820* 17824* 17831 17919 17793 F013203TCS F042004HCS F042032HCS F0420ELN F04PW F051808SCS F05LW F081306HCS F08LW DESCRIPTION GRIP, HANDLE SHOCKMOUNT, 2” OD X 1-3/4” LONG DOWEL PIN, 1/4” X 1.
Exciter Assembly - 14 -
ITEM 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. PART NO. 06237 17170 17629 17640 17643 17645 18547 17736 17863 19864 F042003SSS F042008SCS F061618HCS F0616DLN F06LW F06SW F081306HCS F08LW DESCRIPTION O-RING, 4.33 ID X 0.103 SHOCKMOUNT, 2” OD X 1-3/4” LONG HOUSING, EXCITER BEARING, BALL SHOCKMOUNT, 1” OD X 1” LONG COVER, EXCITER KIT, CLAMPS (INCLUDES TWO CLAMPS AND ALL NECASSARY HARDWARE) NUT, SQUARE, 3/8”-16 WASHER, FIBER, 0.25 X 0.38 X 0.
Engine and Engine Mount - 16 -
ITEM 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. PART NO.
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 put to first use. batteries, and the like, all of which are sold AS IS/WHERE IS WITH ALL FAULTS.
