Operation Manual MODEL sp2s20h self-propelled professional pavement saw (HONDA GX630RTXF2 GASOLINE ENGINE) Revision #1 (02/17/2012) 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 and some of 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. Crystalline silicafrombricks. Cementandothermasonryproducts. Arsenicandchromiumfromchemically treatedlumber.
Silicosis/Respiratory Warnings WARNING WARNING SILICOSIS WARNING RESPIRATORY HAZARDS Grinding/cutting/drilling of masonry, concrete, metal and other materials with silica in their composition may give off dust or mists containing crystalline silica. Silica is a basic component of sand, quartz, brick clay, granite and numerous other minerals and rocks. Repeated and/or substantial inhalation of airborne crystalline silica can cause serious or fatal respiratory diseases, including silicosis.
Table of Contents SP2S20H Pavement Saw Proposition 65 Warning............................................ 2 Silicosis/Respiratory Warnings................................. 3 Table Of Contents..................................................... 4 Training Checklist..................................................... 6 Daily Pre-Operation Checklist.................................. 7 Safety Information............................................... 8-14 Specifications......................................
notes SP2S20h PAVEMENT SAW • operation manual — rev.
training checklist Training Checklist No, Description 1 Read operation manual completely. 2 Machine layout, location of components, checking of engine and hydraulic oil levels. 3 Fuel system, refueling procedure. 4 Operation of spray and lights. 5 Operation of controls (machine not running). 6 Safety controls, safety stop switch operation. 7 Emergency stop procedures. 8 Startup of machine, pre-heat, engine choke. 9 Forward and reverse travel. 10 Starting a cut.
daily pre-operation checklist Daily pre-operation Checklist 1 Hardware and damage check 2 Engine oil level 3 Hydraulic oil level 4 Condition of blade 5 Safety stop switch operation 6 Braking control operation SP2S20h PAVEMENT SAW • operation manual — rev.
Safety Information Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others. Potential hazards associated with the operation of this equipment will be referenced with hazard symbols which may appear throughout this manual in conjunction with safety messages.
Safety Information geNeral SaFeTy CauTioN NeVer operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations. Avoid wearing jewelry or loose fitting clothes that may snag on the controls or moving parts as this can cause serious injury. NeVer operate this equipment when not feeling well due to fatigue, illness or when under medication.
Safety Information SaW SaFeTy NOTICE DaNger Engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled. The engine of this equipment requires an adequate free flow of cooling air. NeVer operate this equipment in any enclosed or narrow area where free flow of the air is restricted. If the air flow is restricted it will cause injury to people and property and serious damage to the equipment or engine.
Safety Information BlaDe SaFeTy WarNiNg Rotating blade can cut and crush. alWayS keep hands and feet clear while operating the saw. CauTioN NeVer operate the saw without blade guards and covers in place. Exposure of the diamond blade must not exceed 180 degrees. Verify the engine start switch is set to the OFF position before installing a blade. alWayS inspect blade before each use. The blade should exhibit no cracks, dings, or flaws in the steel centered core and/or rim.
Safety Information Fuel SaFeTy DaNger BaTTery SaFeTy (eleCTriC STarT oNly) DaNger Do NoT add fuel to equipment if it is placed inside truck bed with plastic liner. Possibility exists of explosion or fire due to static electricity FUEL Do NoT drop the battery. There is a possibility that the battery will explode. Do NoT expose the battery to open flames, sparks, cigarettes, etc. The battery contains combustible gases and liquids.
Safety Information liFTiNg SaFeTy CauTioN NeVer tip the engine to extreme angles during lifting as it may cause oil to gravitate into the cylinder head, making the engine start difficult. NeVer allow any person or animal to stand underneath the equipment while lifting. Always make sure crane or lifting device has been properly secured to the lifting bale. Some saws are very heavy and awkward to move around. Use proper heavy lifting procedures. Do NoT lift machine to unnecessary heights.
Safety Information eNViroNMeNTal SaFeTy/DeCoMMiSSioNiNg NOTICE eMiSSioNS iNForMaTioN NOTICE Decommissioning is a controlled process used to safely retire a piece of equipment that is no longer serviceable. If the equipment poses an unacceptable and unrepairable safety risk due to wear or damage or is no longer cost effective to maintain (beyond life-cycle reliability) and is to be decommissioned (demolition and dismantlement),be sure to follow rules below.
Specifications Table 1. Specifications (Saw) Blade Capacity 508 mm (20 in.) Cutting Depth 191 mm (7.5 in.) Arbor Diameter 25.4 mm (1 in.) Front Wheels 125 mm Dia. x 50 mm Wide (5 in. x 2 in.) Rear Wheels 203 mm Dia. x 50 mm Wide (8 in. x 2 in.) Nominal Mass* 173 kg (380 lbs.) Maximum Operating Mass** 201 kg (443 lbs.) lbs. (kg) Sound Pressure at 88.8 dB Operator’s Position Hand/Arm Vibration 5.61 ms-2 (At Handle)*** * Nominal Mass: Mass without blade, all fluid tanks empty, any optional parts removed.
Specifications Table 2. Specifications (Engine) Model GX630RTXF2 Engine Type Air-cooled, 4-stroke OHV Net Power Output 20.8 HP (15.5 kW) @ 3,600 rpm Bore x Stroke 3.1 x 2.8 in (78 x 72 mm) Displacement 42 in3 (688 cm3) Net Torque 35.6 ft lbs (48.3 Nm) @ 2,500 rpm Carburetor Horizontal Type, Two-Barrel Butterfly Ignition System Digital CDI with variable ignition Starting System Electric Start Lubrication System Forced Lubrication Air Cleaner Paper Filter Oil Capacity 2.1 US qt (2.
dimensions E 23587 UNLEADED GAS ONLY A B D C H G F Figure 1. Dimensions Table 3. Dimensions REFERENCE LETTER A B C D E F G H Max Height (Handle Bars fully lowered & Front Pointer raised) Max Handle Bar Height (fully raised) Max Length (Handle Bars & Front Pointer fully raised) Max Length (Handle Bars fully raised & Front Pointer lowered) Max Handle Bar Width Max Width Rear Wheel Base DIMENSIONS IN. (MM) 914 mm (36 in.) 1016 mm (40 in.) 1092 mm (43 in.) 1727 mm (68 in.) 610 mm (24 in.) 622 mm (24.
general information Intended Use The SP2S20H saw is designed for pavement cutting utilizing diamond blades. Operation of the saw should be in accordance with the manufacturer's instructions. The manufacturer cannot be held liable for damages as a result of misuse. Familiarization The saw has been engineered for general and industrial flat sawing applications. The reinforced steel box frame design adds strength necessary to reduce blade vibrations while cutting.
components 14 1 13 2 12 4 11 3 10 LEFT-SIDE 5 6 9 8 7 Figure 2. SP2S20H Components (Left Side) 1. Raise/Lower Crank Handle — Physically orients saw (raises or lowers) depending on cranking direction (clockwise or counterclockwise). Turning the handle clockwise lowers the saw while turning the saw counterclockwise raises the saw. 2. Transmission Engage/Disengage Lever — Forward locking position engages transmission.
components 20 15 21 REAR 16 22 17 26 25 19 18 24 RIGHT-SIDE 23 Figure 3. Saw Components (Right Side/ Rear) 15. Forward/Reverse Speed Lever — Controls forward and reverse speeds. Provides positive neutral for engine start. ALWAYS place transmission engage/ disengage lever in the engage position before setting speed lever. 16. Throttle Lever — Used to adjust engine RPM speed (SLOW or FAST). 17. Ignition Module — Turn switch clockwise to start engine. 18.
basic engine 3 1 4 9 2 10 11 5 8 8 12 7 13 6 Figure 4. Engine Components INITIAL SERVICING The engine must be checked for proper lubrication and filled with fuel prior to operation. Refer to the manufacturer's engine manual for instructions and details of operation and servicing. 1. Muffler — Used to reduce noise and emissions. WARNING Engine components can generate extreme heat. To prevent burns, DO NOT touch these areas while the engine is running or immediately after operating.
inspection PREPARATION / PRE-INSPECTION 1. Read and fully understand this manual, the safety information section in particular, and the engine manufacturer's manual supplied with the saw. 2. Select the correct blade for each application. Refer to the Blades and Blade Placement sections for further information. the filler neck. Check the oil level shown on the dipstick. 4. If the oil level is low, fill to the edge of the oil filler hole with the recommended oil type (Table 4).
inspection 1. The transmission is factory filled with approved hydraulic fluid that has a viscosity equivalent to SAE 20W-20. Should additional servicing be required, the following hydraulic fluids are recommended: • General Motors Dextron B • Ford MM2C-33F • Ford M2C-41A • International harvester Hy-Tran Fluids 2. Note the level marks on the reservoir (Figure 7). It is essential to reference the existing oil conditions (A) cold or (B) hot prior to operating the saw. DO NOT over fill the fluid reservoir.
inspection uniform about the rim of the blade, and not succumbing to an “under cutting” condition brought about by highly abrasive material or improper under cutting core protection. 4. Directional Arrow — Check to ensure that the blade is oriented properly on the blade shaft for sawing. Reference the directional arrow in the blade and place it so the direction of rotation “downcuts” with the turn of the shaft. 5.
inspection BLADE placement The following steps should be accomplished before placing the diamond blade on the blade shaft. 1. Set the engine ON/OFF switch to the OFF position. 2. Raise the saw to a high position by cranking the Raise/ Lower handle in a counterclockwise direction. 3. Use the Blade Nut Wrench and Blade Shaft Locking Wrench stored on the front section of the console to install the diamond blade. Refer to Figure 9 when removing or installing the diamond blade as follows. 1.
inspection 2. Check that the guard seats firmly upon the bayonet fitting of the saw frame. 3. Check that the spring tensioned front cover of the guard is firmly seated with the rear section of the guard, and there are no gaps. 4. Check the fit of the water hoses in the sides of the blade guard. NEVER lift the blade guard while cutting. 5. Check that the flood water tubes are clear and open. Test the water supply for pressure and flow (to both sides of the blade) before sawing operations.
inspection 3. Check V-belt tension (Figure 14) by using a tensionmeter (2.7 - 4.1 kg/6.0 - 9.0 lbs.) against the inside belt at a midpoint between the two pulleys, or by deflecting the center belt at a midpoint 10 mm (3/8”) - 13 mm (1/2”). CORRECT V-BELT TENSION 3/8 IN. (10 MM) TO 1/2 IN.
inspection 2. Move the handle bars (Figure 17) up or down to operator's desired preference. determining the cut depth To adjust the blade height: 1. Pull upward on the raise/lower crank handle knob. 2. Rotate the crank handle clockwise to lower the blade. Rotate the crank handle counterclockwise to raise the blade (Figure 18). The handle will stop rotating when the blade has been fully raised or lowered. When preparing to cut, your blade size determines the depth of the cut.
startup engine startup 1. Ensure the wheel clamps are in the LOCKED position. (Figure 19). 4. If operating the saw in cold weather conditions, place the Choke Lever (Figure 22) in the CLOSED position. PUSH (CLOSE) Figure 22. Choke Lever (Closed Position) Figure 19. Wheel Clamp 2. Ensure the Engine Shutdown Switch on the handlebar and the ignition switch are both in the OFF position to avoid accidental starting (Figure 20 and Figure 21). 5.
startup 8. Rotate the ignition switch to the START position to engage the starter. CAUTION ALWAYS cut with the saw at FULL THROTTLE. Attempting to cut with the saw at less than full throttle could cause the blade to bind or stop abruptly in the slab resulting in serious injury to the operator or others in the area. CAUTION Figure 25. Ignition Switch (START) position 9. Once the engine has started, slowly return the choke lever (Figure 22) to the CLOSED position.
OPERATION Traveling During Cutting This saw has a hydrostatic transmission which mechanically propels the saw during cutting operations. To prepare the machine: 3. Move the travel lever towards the FORWARD position to increase forward travel speed during cutting (Figure 29). Placing the travel lever fully forward will move the saw at maximum speed. 1. Place the travel lever in the neutral position (Figure 27). Figure 29. Travel Lever (Forward Position) Figure 27. Travel Lever (Neutral Position) 2.
OPERATION 2. To reorient a pointer position, loosen the screw that secures the pointer bar to the shaft, adjust as necessary, and retighten the screw. Cutting 4. Open the water system valve on the left side of the console by moving the lever to the ON position (Figure 33) and ensure the water is flowing equally to both sides of the diamond blade. WARNING The operator must wear the appropriate protective equipment and clothing while engaged in sawing. Failure to do so can result in SERIOUS INJURY.
OPERATION Finishing A Cut shutdown procedure 1. Raise the blade out of the cut by cranking the Raise/ Lower handle counterclockwise. Raise the blade high enough out of the cut to clear the surface and allow the saw to be maneuvered. Stopping the engine under normal conditions: 1. Disengage the drive by placing the forward/reverse speed lever (Figure 34) in the NEUTRAL position. 2. Shut the engine down according to the SHUTDOWN PROCEDURE.
maintenance Table 8. Engine Maintenance Schedule EVERY EVERY 6 FIRST BEFORE YEAR MONTHS DESCRIPTION MONTH OR OPERATION EACH OR 300 OR 100 (3) 20 HRS. USE HRS. HRS. Check X Engine Oil Change X X Engine Oil Filter Replace Every 200 Hrs. Check X Air Cleaner Clean X (1) Change Spark Plugs Spark Arrester Fuel Filter Fuel Tube Check/Adjust EVERY 2 YEARS OR 500 HRS. X (*) X Replace Clean Replace Check X X X (2) Every 2 years (replace if necessary) (2) * - Replace the paper filter element only.
maintenance General maintenance practices are crucial to the performance and longevity of your saw. The extreme environments of sawing operations require routine cleaning, lubrication, belt tensioning, and inspection for wear and damage. AIR CLEANER This engine is equipped with a replaceable, high-density paper air cleaner element. See Figure 37 for air cleaner components. The following procedures, devoted to maintenance, can prevent serious saw damage or malfunctioning.
maintenance 4. Release the latches located on either side of the air cleaner dust pan. Remove the dust pan. 5. Remove the air cleaner element. 6. Blow low pressure air from the inside of the element to dislodge the dust and dirt. Do not use excessive air pressure or the element will be damaged and will need to be replaced. 7. Replace the element if it is damaged or excessively dirty. SEAL WASHER 8. Clean the inside of the dust pan. 9.
maintenance SPARK PLUG ADJUSTMENT spark arrester cleaning Clean the spark arrester every 6 months or 100 hours. NOTICE For good performance, the spark plugs must be properly gapped and free of deposits. 1. Remove the special screw from the muffler and remove the spark arrester (Figure 42). While a loose spark plug can overheat or damage the engine, overtightening the sparkplug can damage the threads in the cylinder head. 1. Make sure the engine is cool before servicing the spark plugs. 2.
maintenance Bearing Lubrication General Transmission Care There are four grease points for the saw. Use only Premium Extreme Pressure Grease, conforming to NLG1 Grade #2 consistency, to grease the zerk fittings. The saw utilizes spline gear wheel design coupled with an EATON Model 7 Hydrostatic Transmission that provides forward/reverse propulsion. The simple design of the system keeps maintenance to a minimum. 1. Rear Wheels (1) — Grease daily (Figure 44).
maintenance NOTICE Excessive tension on the drive chain will reduce chain life. LOOSEN SCREWS 4 PLACES 2. Loosen the linkage adjustment nut and slightly lengthen the linkage rod (Figure 50). TRANSMISSION ENGAGE/DISENGAGE LEVER U-SLOTS TRANSMISSION MOUNT HYDROSTATIC TRANSMISSION SPLINE GEAR LINKAGE ROD CONTACT POINT REAR WHEEL Figure 48. Hydrostatic Transmission Spline Gear Wheels Check every 25 hours and clean as necessary.
maintenance Drive V-Belt Check The V-Belts of the saw have been factory-set utilizing precision standards. Operating the saw with less than the specified number of V-belts (See Table 6), or belts that are slipping or are over-tensioned, will significantly diminish the performance of the saw and may cause damage to the blade. V-Belt Replacement and Tension Adjustment 3. Loosen the four 1-1/2” HHC screws from the engine mount (Figure 54). ENGINE BASE ENGINE BASE PIVOTS 1.
maintenance Pulley Replacement and adjustment The V-belts and their respective pulleys have been professionally aligned at the factory. If there is a requirement to remove/replace or adjust the pulleys, perform the following steps. 1. Select the proper-sized pulley both in outside diameter and arbor size. Use approved parts to ensure the component compatibility. 2. A change in pulley diameters may require specifically sized V-Belts. Contact Multiquip Parts Department to ensure V-Belt compatibility.
maintenance HEX JAM NUT BLADE INSIDE FLANGE SCREW (2) BLADE SIDE FLATWASHER (2) LOCKWASHER (2) OUTSIDE FLANGE SET SCREW DOWEL PIN KEY BLADE SPINDLE SHAFT PILLOW BLOCK BEARING SCREW (2) FLATWASHER (2) LOCKWASHER (2) SET SCREW V-BELTS (4) KEY PULLEY SIDE PILLOW BLOCK BEARING SPACER SET SCREW (2) PULLEY BUSHING RETAINING SCREW (3) HEX JAM NUT Figure 57. Blade Shaft Bearing Replacement Blade Shaft Bearing Replacement 1. Remove blade-side hex jam nut.
maintenance 8. Place blade spindle (shaft) on a suitable workbench. 9. Remove blade-side key. 10. Loosen blade-side pillow block bearing set screw. 11. Slide blade side pillow block bearing off blade spindle shaft. 12. Remove the three retaining screws that secure the bushing to the pulley. 6. If the pump will not be in operation for a long period of time, store in cool dry place and check the battery charge level every month to maintain the performance of the battery. 7.
maintenance LONG-TERM STORAGE For storage of the saw for over 30 days, the following is required: Drain the fuel tank completely, or add STA-BIL to the fuel. Run the engine until the gasoline in the carburetor is completely consumed. Completely drain the oil from the crankcase and refill with fresh oil. Remove the spark plug. Pour 5 to 10 cc of SAE 30 oil into the cylinder. Turn the engine switch to the START position for a few seconds to distribute the oil. Reinstall the spark plug.
engine wiring diagram SP2S20h PAVEMENT SAW • operation manual — rev.
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 deficient spark plug insulation? Check spark plug insulation, replace if worn. Improper spark plug gap? Set to proper gap. Fuel reaching carburetor? Check fuel line. Water in fuel tank? Flush or replace fuel tank. Fuel filter clogged? Replace fuel filter.
troubleshooting Troubleshooting (engine) - continued Symptom Weak in power, compression is proper and does not misfire. Weak in power, compression is proper but misfires. Engine overheats. Rotational speed fluctuates. Recoil starter malfunctions. (if applicable) Starter malfunctions. possible problem Air cleaner dirty? Clean or replace air cleaner. Improper level in carburetor? Check float adjustment, rebuild carburetor. Defective spark plug? Clean or replace spark plug.
troubleshooting Troubleshooting (Blades) Symptom Blade slows or Stops cutting,still remains on blade. possible problem Solution Blade too hard for the material being cut? Consult Dealer or Multiquip for correct blade. Try cutting very soft material (sandstone, silica brick, cinder block) to "Redress" the blade. Engine Torgue diminished because of loose V-Belts? Tighten and/or replace V-Belts. Insufficent Engine power? Check Throttle setting. Check Engine horespower.
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Operation Manual HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING United StateS Multiquip Corporate Office 18910 Wilmington Ave. Carson, CA 90746 Contact: mq@multiquip.com MQ Parts Department Tel.
