Shindaiwa 68006-94310 Owner's Manual
Contents
1. 127mm Diamond Wheel 360mm 129mm Rated Spindle Speed EC7500 3 800 min 1 rpm EC7600 3 320 min 1 rpm Maximum Spindle Speed EC7500 4 180 min 1 rpm EC7600 3 650 min 1 rpm Maximum Peripheral Wheel Speed EC7500 67 m sec EC7600 68 m sec Speed Reduction Ratio EC7500 2 50 1 EC7600 2 87 1 Type of Fuel Unleaded gasoline plus 2 cycle engine oil 50 1 Fuel Tank Capacity 800ml Carburetor Type Diaphragm Ignition System Electronic Spark Plug NGK BPMR7A Engine Starting Stopping Toggle switch recoil starter Power Transmission Automatic centrifugal clutch V ribbed belt Anti Vibration System Uni ed handles with 7 point support Safety Devices Throttle lock out wheel guard Dry Weight without wheel EC7500 10 0kg EC7600 10 5kg Dimensions L x W x H EC7500 740 x 220 x 375mm EC7600 765 x 220 x 390mm Sound Pressure Level EC7500 97 dB A EC7600 97 dB A2. Fuel Filler Opening On Off Switch Choke Ratio of Fuel Oil Mixture 50 1 No Fire Allowed Rated Spindle Speed min 1 Max Spindle Speed min 1 3 Before Operation Children and people who do not understand this manual must not use this unit Never allow other people or animals to be near the unit when starting or operating Never touch a rotating cut off wheel Operate the unit only in a well ventilated area Never operate the unit in a closed area such as a room warehouse or tunnel Running the unit in a closed area may cause seri ous illness or even death due to exhaust gas Never allow any people or ani mals near exhaust gas Never inhale exhaust gas Never make unauthorized modi cations or alterations to any of the components of the unit and never operate the unit without the wheel guard or muf er This unit is designed for one man operation and must be operated by only one person Never operate the unit when you are tired or under in uence of any substance that could impair vision dexterity or judgement When operating the unit always wear snug tting clothing safety gloves safety non skid footwear hearing protection a dust proof mask a helmet and goggles Nev er wear oppy clothing shorts sandals or accessories that could become entangled A rst time
3. Open the fuel cap slowly to release any possible build up of pressure Never refuel when the unit is hot Allow to cool before refueling Never fuel when the engine is run ning After fueling wipe all spilled fuel Cutting metal may cause sparks from the cut off wheel and may ig nite spilled fuel which could result in serious injury 5 Safety Precautions continued WARNING Kickback Kickback may force the cut off wheel up and back toward the operator lightning fast Kickback can occur whenever the upper half of the cut off wheel touches an object Never cut an object using the upper half of the cut off wheel EC7500 14 EC7500 17 Figure 2 Always be aware of and pre pared for kickback Figure 3 Always operate below chest level Operation The unit must be held rmly with both hands one hand on the rear handle the other on the front handle Never hold onto any other part of the unit Never impact or apply pressure to the sides of the cut off wheel for any reason Maintain rm and stable footing during operation Do not over reach When working in a group make sure operators are least 10 meters away from each other If you drop the unit or strike it against a hard surface stop the engine immediately and inspect for damage If you discover dam age have it repaired before you return the uni
4. empty the fuel tank completely Store gasoline and mixed fuel in a closed dry place and where combustibles are not nearby WARNING Safety Precautions continued Operation continued If you discover fuel leakage im mediately stop the engine Cutting may cause sparks from the cut off wheel Make sure there is no ammable substanc es nearby Never cut live electrical wires The shock you might receive could be very serious Do not touch hot parts such as the muf er or cylinder You could burn yourself severely The cut off wheel gets hot while cutting Never touch the wheel immediately after cutting You could burn yourself severely While the engine is running never touch high voltage parts such as the spark plug cap and plug cord Stopping The Engine The cut off wheel coasts for a while after the engine is stopped Keep hold of the unit rmly until the wheel stops com pletely and then place it on the ground 7 EC7500 1 No performance guarantee without using genuine Shindaiwa blades No load revolution speed 4180 min 1 rpm Use reinforced abrasive blades with maximum useable perimeter velocity of 15 749 ft min 4800 m min USE ONLY GENUINE SHINDAIWA BLADES EC7500 Max blade diameter 12 305mm Max blade thickness 0 157 4 0mm Standard arbor 0 86 22mm others available see owner s manual EC750
5. 3 Repeat Steps 1 and 2 until the en gine will no longer start CAUTION Gasoline stored in the carburetor for extended periods can cause hard starting and could also lead to increased service and maintenance costs Long Term Storage Remove the spark plug and put a small amount of 2 cycle mixing oil 1 2 cm3 into the cylinder through the spark plug hole Slowly pull the recoil starter 2 or 3 times so oil will evenly coat the interior of the engine Reinstall the spark plug Before storing the unit repair or replace any worn or damaged parts Remove the air cleaner element from the carburetor and clean it as described on page 17 then reas semble the element Clean the exterior of the unit thor oughly Store the unit is a clean dust free area 24 The engine does not start PROBLEM Remove the spark plug pg 13 Is the spark plug wet Cutting performance is poor PROBLEM Make sure the choke is pushed fully in Make sure the air cleaner is clean pg 17 Make sure the drive belt is properly tightened pg 19 Make sure the carburetor is is properly adjusted pg 18 Make sure the cut off wheel is appropriate for your work Make sure the diamond wheel is sharp Dry the spark plug Inspect the spark plug pg 19 Pull the recoil starter several times to remove fuel from the cylinder If the above inspections and ma
6. Outer Flange 3 Loosen the outer ange bolt with the wrench and remove the bolt and outer ange 4 Before mounting a cut off wheel determine its arbor diameter If nec essary remove the snap ring from the arbor install the correct collar then re install the snap ring EC7500 20A EC7500 20 Belt Guard Hex Wrench Outer Flange Bolt Wrench Tighten Loosen WARNING Using the wrong size collar may lead to failure of the wheel or the unit and could result in serious injury 5 Remove the old wheel and install the new one Make sure the inner bore is properly set onto the collar 6 Replace the outer ange and bolt then holding the hex wrench in the hole of the belt guard tighten the bolt with the wrench 7 Make sure the cut off wheel is securely fastened and does not wobble CAUTION Make sure the rotating direction of wheel corresponds to the one in dicated on the wheel guard Make sure there is no dust around the outer ange WARNING Make sure the replacement cut off wheel rpm rating is greater than the speed indicated on the wheel guard label EC7500 42 Label Showing Direction of Rotation Label Showing Rated and Maximum Spindle Speed Wheel Guard Diamond Wheel Replacing the Cut off Wheel 22 EC7500 44 Sharpening a Diamond Cut off Wheel While running the engine at low speed make about 10 passes at cutting a con crete block or a soft bri
7. Sound Power Level EC7500 108 dB A EC7600 110 dB A Vibration Level Front handle idle rated spindle EC7500 6 96 5 48m sec2 EC7600 10 09 10 49m sec2 Rear handle idle rated spindle EC7500 8 61 14 60m sec2 EC7600 8 93 13 70m sec2 Recommended Cut off Wheels EC7500 abrasive 305mm dia EC7500 diamond 320mm dia EC7600 abrasive 355mm dia EC7600 diamond 360mm dia Arbor Sizes 20mm 22mm and 25 4mm Measured in accordance with EN ISO 11201 1995 Measured in accordance with ISO 7293 1983 Measured with 305mm wheel EC7500 and 355mm wheel EC7600 Measured in accordance with EN ISO 3744 1995 Measured in accordance with EN 28662 1 1992 10 IMPORTANT This unit is equipped with a 22mm wheel collar Wheel adapters for 20mm and 25 4mm cut off wheels are located in the tool set Before mounting a wheel deter mine its arbor diameter If it is necessary to replace the col lar remove the snap ring on the arbor install the correct size arbor collar and then replace the snap ring WARNING Use of the incorrect collar size may lead to wheel failure and unit failure that could result in serious injury 2 Make sure the ON OFF switch is Off and the
8. another 4 5 turns so that adequate clearance is achieved where the tension screw contacts the mount when the mount is turned over See Figure 16 Figure 16 EC7500 34 Mount Tension Screw Figure 17 3 Using a 6mm hex wrench remove the two belt guard bolts and slide the belt guard forward to remove See Figure 17 6mm Socket Head Bolts 16 Inspection and Maintenance Item What to Do Daily Weekly Monthly As Req d Air Cleaner Clean Cut off Wheel Check amp Sharpen Bolts Screws Check amp Retighten Fuel Cap Check Leakage Fuel Tank Check Leakage Wheel Guard Check Function Clutch Bearing Grease Belt Check and Adjust Spark Plug Check and Clean Cylinder Fins Clean Fuel Filter Clean Carburetor Adjust Inspection and Maintenance Requirements Figure 19 5 Making sure that the drive belt is fully engaged in the drive pulleys slide the belt cover on and install the two socket head bolts into the left hand side of the mounting sur face only until the bolts bottom on the belt cover See Figure 19 6mm Socket Head Bolts Figure 20 6 Adjust the tension screw until the tension indicator is in the middle of the scale See Figure 20 7 Tighten the two mounting bolts securely 8 Reconnect the main water line adjust and retighten water nozzles if equipped with a water k
9. engine is stopped 3 Insert a hex wrench into the hole in the belt guard to prevent the arbor from turning See Figure 7 EC7500 20A Assembly EC7500 19 Figure 6 Instruction Manual Engine Unit Tool Set Figure 7 Belt Guard Hex Wrench Mounting the Cut off Wheel 1 Select a cut off wheel for your work according to the following chart Refer to the wheel manufacturer s manual for additional information Recommended Cut off Wheels Inner bore 20mm 22mm 25 4mm Wheels for EC7500 Abrasive 305mm outer diameter Diamond 320mm outer diameter Wheels for EC7600 Abrasive 355mm outer diameter Diamond 360mm outer diameter Prior to Assembly Before assembling make sure you have all the components required for a complete unit This unit consists of the items shown in Figure 6 Carefully inspect the engine unit for damaged or loosen bolts If you nd any damage or missing items check with your dealer EC7500 45 Snap Ring Flange Collar EC7500 49 20 mm Collar 22mm Collar 25 4mm Collar Drive Shaft 11 EC7500 20 4 Loosen bolt with the wrench and remove bolt and outer ange See Figure 8 Figure 8 Outer Flange Bolt Tighten Loosen WARNING When lling the fuel tank make sure the engine is stopped and cool Filling the fuel tank or mixing fuel and oil must be done in a place where there is no risk of re CAUTION
10. it should rst be treated with a fuel stabilizer such as StaBil 1 Use a container to pre mix gasoline and oil Pour oil in rst then add gasoline 2 Remove the fuel ller cap by turn ing counterclockwise 3 Fill the tank with the mixed fuel then tighten the fuel ller cap se curely 4 Any spilled fuel must be wiped up completely Make sure the unit has no fuel leaks 12 EC7500 22 7 Grip the recoil starter handle with your right hand pull the starter cord slowly until you feel the starter engage then 8 start the engine by pulling the starter cord upward rapidly CAUTION The recoil starter can be dam aged by abuse Never pull the starter cord to its full length Always engage the starter be fore cranking the engine Always rewind the starter cord slowly Do not just let go of the cord 9 When the engine res push the choke in to its original position choke open 10 If the engine does not continue to run pull the recoil again 11 As the engine starts clear excess fuel from the combustion chamber by revving the engine several times IMPORTANT The throttle trigger can not be moved without rst depressing the lockout lever Operating the throttle will automatically disengage the fast idle setting Figure 10 EC7500 21 WARNING Before starting the engine place the unit on a clean level surface Ma
11. 0 18 DECOMPRESSION VALVE PRIMER T Safety and Operation Information Labels IMPORTANT Make sure all safety and operation information labels are undamaged and readable Immediately replace damaged or missing safety and operation information labels which are available from your authorized Shindaiwa dealer Figure 4 BELT DIRECTION S T O P O EC7500 EC7600 EC7500 EC7600 8 EC7500 18 EC7500 1A Unit Description Figure 5 Air Cleaner Cover Choke Primer Pump Front Handle Cylinder Cover Throttle Trigger Lockout Carburetor Idle Adjustment Screw Cut off Wheel Wheel Guard Lock Knob Belt Guard Rear Handle Fuel Filler Cap Recoil Starter Throttle Trigger Clutch Cover Muf er Decompression Valve ON OFF Switch 9 Technical Speci cations Engine Type 2 Cycle vertical cylinder air cooled Displacement 73 5 cm3 Bore x Stroke 51 x 36mm Max Power Output 3 3kW Recommended Engine Idling Speed 2 500 min 1 rpm Recommended Maximum Engine Speed 10 450 min 1 rpm Maximum Cutting Depth EC7500 Abrasive Wheel 305mm 102mm Diamond Wheel 320mm 109mm Maximum Cutting Depth EC7600 Abrasive Wheel 355mm
12. 2481 2004 Shindaiwa Inc Part Number 68006 94310 Shindaiwa is a registered trademark of Shindaiwa Inc
13. G Never permit bystanders or animals near the unit when starting or operating the unit Be aware of kickback Kickback may force the cut off wheel up and back toward the operator lightning fast Kick back can occur whenever the upper half of the cut off wheel touches an object Never cut an object using the upper half of the cut off wheel When operating always wear snug tting clothing safety gloves safety non skid foot wear hearing protection a dust proof mask a helmet and goggles WARNING When using the cut off saw the wheel guard must be securely in position as a protection against a broken wheel If the wheel guard is not in place a broken wheel could project fragments at high speed and strike you or others possibly resulting in serious injury Wet or Dry Operation This unit is designed to be operated for either dry or wet cutting A water dust suppression kit is available for this unit but is not supplied in the unit packaging Please refer to the assembly and operating instructions supplied with the water dust suppres sion kit Adjusting Wheel Guard Angle Adjust the position of the wheel guard so that fragments will not y toward you if the wheel fractures To reposi tion the wheel guard loosen the lock knob counterclockwise When the wheel guard is positioned correctly securely tighten the lock knob See Figure 14 Operation Figure 14 Cutting This unit p
14. SHINDAIWA OWNER S AND OPERATOR S MANUAL EC7500 EC7600 ENGINE CUTOFF SAW WARNING Read this manual and familiarize yourself with its contents This unit is designed primarily for cutting construction materials and metal ac cording to the type of cutting wheel installed To minimize the risk of injury to yourself and others always wear hearing pro tection a dustproof mask goggles and a helmet when operating this unit Keep this manual handy so you can refer to it when required Part Number 68006 94310 Rev 12 04 2 Wheel Rotating Direction Max Spindle Speed Rated Spindle Speed Throughout this manual are special attention statements WARNING A statement preceded by the word WARNING contains informa tion that should be acted upon to prevent serious injury CAUTION A statement preceded by the word CAUTION contains information that should be acted upon to pre vent unit damage IMPORTANT A statement preceded by the word IMPORTANT is one that possesses special signi cance NOTE A statement preceded by the word NOTE contains information that is handy to know and may make your job easier Attention Statements 2 Labels and Symbols 2 Safety Precautions 3 Safety Operation Information Labels 7 Unit Description 8 Tec
15. Some gasolines contain alcohol as an oxygenate Oxygenated fuels may cause increased operating temperatures Under certain condi tions alcohol based fuels may also reduce the lubricating qualities of some mixing oils Never use any fuel containing more than 10 al cohol by volume Generic oils and some outboard motor oils may not be intended for use in high perfor mance air cooled 2 cycle engines and should never be used in your Shindaiwa engine CAUTION This engine is designed to oper ate on a 50 1 mixture consisting of unleaded gasoline and premium 2 cycle mixing oil only Filling the Fuel Tank 5 Place cut off wheel so the inner bore is properly set onto the collar WARNING Using an inappropriate cut off wheel may cause the wheel to break and may result in serious injury 6 Replace outer ange and bolt and then while holding hex wrench in the hole in belt guard tighten the bolt with wrench 7 Make sure the cut off wheel is securely fastened Spin the wheel to make sure it does not wobble Use only fresh clean unleaded gasoline with a pump octane of 87 or higher Mix all fuel with a premium 2 cycle air cooled mixing oil at a 50 1 gaso line oil ratio Examples of 50 1 mixing quantities 5 liters gasoline to 100ml mixing oil IMPORTANT Mix only enough fuel for your imme diate needs If fuel must be stored longer than 30 days and oil with fuel stabilizer is not used
16. ck Keep the block watered while sharpening Checking the Fuel Filter WARNING KEEP AWAY FROM FIRE OR EXCESS HEAT 1 Remove the fuel ller cap 2 Take the lter out from the fuel opening by using a hooked wire If the lter is hard and clogged with debris replace it with a new one See Figure 30 CAUTION Make sure the fuel line is not pierced by the hooked wire The fuel line can be easily damaged 3 Put the lter back into the fuel tank Make sure the fuel tube is not bent and the lter stays at the bottom of the tank 4 Put the fuel ller cap back and tighten it securely Figure 30 Hooked Wire Fuel Filler Cap Fuel Filter Grease Gun Figure 31 Lubricating the Clutch Bearing Grease the clutch bearing every 20 hours of operation Squeezing a grease gun three times will deliver an appro priate amount of grease See Figure 31 23 Whenever the unit will not be used for 30 days or longer use the following procedures to prepare if for storage Clean external parts thoroughly Drain all the fuel from the carbure tor and the fuel tank IMPORTANT All stored fuels should be stabilized with a fuel stabilizer such as StaBil To remove the remaining fuel from the fuel lines and carburetor and with the fuel drained from the fuel tank 1 Prime the primer bulb until no more fuel passes through 2 Start the engine and idle until it stops running
17. erforms most ef ciently when cutting between 8 500 and 9 500 min 1 rpm While running the engine at full throttle apply slight pressure to the cut off wheel against an object so that engine speed stays at 8 500 9 500 min 1 rpm Too much pressure to the wheel will lower wheel speed reducing cutting ef ciency considerably 1 Make sure you have a clear work area and secure footing 2 Position the cut off wheel vertically to an object Start cutting at a low speed and then gradually accelerate the speed Wheel Guard Lock Knob Wheel Guard Locked Wheel Guard Free 15 NOTE For units equipped with a water kit loosen the 2 water nozzles and dis connect the main water line from the double nozzle 1 Remove the cutting wheel See pages 10 and 11 Using a Phillips screwdriver loosen the tension screw until the tension indicator is all the way to the front of the scale See Figure 15 Figure 15 Figure 18 4 Remove the blade mount from the mounting surface and rotate the blade mount 1800 then remount to the right hand side of mounting surface See Figure 18 Reversing cutting head for ush cutting operations EC7500 34 EC7500 34A Tension Screw EC7500 35 Tension Indicator Belt Guard WARNING Before performing any work on the cut off saw make sure the engine is stopped and the ignition switch is OFF Remove Cutting Wheel Loosen Two Bolts 2 Back off tension screw
18. hnical Speci cations 9 Assembly 10 Filling the Fuel Tank 11 Starting Stopping the Engine 12 Operation 14 Inspection and Maintenance 16 Long Term Storage 23 Troubleshooting 24 Declaration of Conformity 25 Contents Page Attention Statements Labels and Symbols WARNING Using this cut off saw or any other high speed power tool can be hazardous As a result you must employ special safety precautions to reduce the risk of injury or re The following are symbols and their meaning that appear on the unit Shindaiwa Inc reserves the right to make changes to products without prior notice and without obligation to make alterations to units previously manufactured Read and follow this operator s manual Failure to do so could result in serious injury Alway wear an ear muf er a dust proof mask goggles and a helmet when operating this machine BE AWARE OF KICKBACK Kickback may force the cutting off wheel up and back toward the op erator with a lightning fast reaction Kickback can occur whenever the upper half of the cutting off wheel touches an object while operating the machine BE AWARE OF THROWN OBJECTS SOUND POWER LEVEL measured in accordance with 2000 14 EC
19. intenance procedures do not correct the problem contact your Shindaiwa dealer for assistance Make sure the fuel tank contains with clean fresh fuel pg 11 Is the spark plug dry Replace the fuel filter pg 22 Troubleshooting 25 DECLARATION OF CONFORMITY We hereby declare the Shindaiwa Cut off Machine Model EC7500 EC7500 EC1 EC7600 EC1 meets the following respective requirements Council Directives Standard taken 89 336 EEC as amended EN 292 parts 1 amp 2 98 37 EC as amended EN 1454 2000 14 EC as amended CISPR 12 2004 26 EC as amended Measured sound power level 113dB A Guaranteed sound power level 115dB A Technical documentation is kept by K Maeda DIV Manager Engineering Research and Development DIV Shindaiwa Kogyo Co Ltd Head of ce 6 2 11 Ozuka Nishi Asaminami Ku Hiroshima 731 3167 Japan TEL 81 82 849 2003 FAX 81 82 849 2482 Shindaiwa Kogyo Co Ltd Head of ce 6 2 11 Ozuka Nishi Asaminami Ku Hiroshima 731 3167 Japan TEL 81 82 849 2206 FAX 81 82 849 2481 19th January 2005 T Yoshitomi DIV Mana Quality Assurance DIV Declaration of Conformity 26 Notes 27 Notes Shindaiwa Inc 11975 SW Herman Road Tualatin Oregon 97062 Telephone 503 692 3070 Fax 503 692 6696 www shindaiwa com Shindaiwa Kogyo Co Ltd 6 2 11 Ozuka Nishi Asaminami Ku Hiroshima 731 3167 Japan Telephone 81 82 849 2220 Fax 81 82 849
20. it 9 Reinstall the cutting wheel Reversing cutting head for ush cutting operations cont MAINTENANCE REPLACEMENT OR REPAIR OF EMISSION CONTROL DE VICES AND SYSTEM MAY BE PERFORMED BY ANY REPAIR ESTABLISHMENT OR INDIVIDUAL HOWEVER WARRANTY REPAIRS MUST BE PERFORMED BY A DEALER OR SERVICE CENTER AUTHORIZED BY SHIN DAIWA KOGYO LTD AND USE OF PARTS THAT ARE NOT EQUIVALENT IN PERFORMANCE AND DURABILITY TO AUTHORIZED PARTS MAY IMPAIR THE EFFECTIVENESS OF THE EMISSION CONTROL SYSTEM AND MAY HAVE A BEARING ON THE OUTCOME OF THE WARRANTY CLAIM 17 EC7500 23 EC7500 24 WARNING Inspection and maintenance should be done in a well ventilated place and where there is no risk of re Dust in the air cleaner will affect en gine life The air lter must be cleaned every time you start operating Clean the air lter once a day and replace the lter every 20 hours of operation according to the follow ing procedures See Figure 21 1 Pull the choke lever out so that dust will not enter the carburetor 2 Unscrew the knob on the cleaner cover and remove the cleaner cover and lter 3 Remove the pre lter from the lter 4 clean the pre lter with soap and water and let dry 5 If compressed air is available blow air from inside the lter to remove dust If compressed air is not avail able remove dust by gently tapping the element on a hard surface IMPORTANT When cleaning the lte
21. ke sure you have good secure footing and always keep a rm grip on the unit Move at least 3 meters away from the fueling site before starting the engine Make sure the cut off wheel is well clear of obstacles The cut off wheel may rotate when the engine starts Keep bystanders well away Never start the engine without a cut off wheel installed Starting the Engine When the Engine is Cold Figure 9 Primer Pump Choke 1 Turn the on off switch On 2 Depress the primer pump a few times repeatedly until the primer pump is almost lled with fuel See Figure 9 3 Push the decompression valve In 4 Pull the choke all the way out choke closed The throttle will automatically be set to fast idle See Figure 9 5 Place the unit on rm ground 6 Secure the unit by placing your right foot inside the rear handle and your left hand on the front handle See Figure 10 12 Let the engine run at idle speed for 2 3 minutes to warm up 13 If the engine fails to start repeat the appropriate starting procedure for a cold or warm engine WARNING Keep well away from re If the engine still does not start 1 Pull the choke all way out 2 Unscrew the knob on the cleaner cover and remove the cleaner cover See Figure 11 EC7500 23 1 Turn the on off switch On WARNING The cut off wheel must not rotate at idle speed If it rotates reduce idle speed b
22. operator should obtain practical instruction from a dealer or an experienced user before using the unit Safety Precautions WARNING To minimize the risk of sparks igniting clothing while operating the unit wear clothing made of leather wool tightly woven cotton or cotton treated with ame retardant Never use any cut off wheel that is not recommended in this manual Do not start or operate the unit un less you have a clear work area and secure footing Do not operate the machine for more than two hours a day in total Do not operate it for more than ten minutes continuously Due to vibra tion excessive operation may cause you white nger disease Never smoke or use re near the unit or its fuel Since the muf er and exhaust gas become very hot make sure there are no ammable substances near the unit Never run the unit if you discover a fuel leak Make sure all the components are in place and the bolts are securely fastened Make sure the cut off wheel is securely fastened and is not dam aged Never use a cut off wheel with cracks distortion or one that is unbalanced Make sure the belt tension is prop erly adjusted and the wheel guard belt guard and clutch cover are securely assembled Always inspect the front handle rear handle and wheel guard before use and never use the unit if
23. r the lter housing and the inside of the cleaner cover should also be cleaned Cleaning the Air Cleaner Remove the Filter and Pre lter Figure 21 Unscrew the Knob Choke EC7500 48 Filter Pre lter Reversing cutting head for ush cutting operations cont 6 Replace the pre lter onto the lter and reassemble them into the lter housing Make sure both lter bolts are securely tightened 7 Reinstall the cleaner cover and make sure the knob is securely tightened 18 EC7500 30 It is not necessary to adjust the carbu retor when the unit is new Adjust the carburetor only when you are sure it is necessary due to differences in work ing conditions such as atmospheric pressure or temperature or change in unit conditions after more than 10 hours of use If you are unfamiliar with carbure tor adjustment techniques ask your dealer for advice Adjust the carburetor in accordance with the following procedures WARNING When adjusting the carburetor keep bystanders well away and make sure the cut off wheel is clear of any interference because the wheel may rotate during carbu retor adjustment 1 Prior to adjusting clean the air lter as described on the previous page and then run the engine for a few of minutes at idle speed to warm up the engine Figure 22 Adjusting the Carburetor Adjusting Idle Speed To adjust idle speed turn the Idle Adjust Screw with a screwdri
24. rd Figure 24 0 6mm EC7500 34A Figure 25 Clutch Cover Bolt Mark Belt Guard Washer Tension Screw 20 EC7500 47 EC7500 36 EC7500 35 Replacing the Drive Belt 1 Loosen the tension screw Loosen the two bolts on the belt guard and remove the belt guard by sliding it to the right See Figure 26 2 Loosen the two bolts in the clutch cover and remove the clutch cover 3 Replace the old belt with a new one Figure 26 Tension Screw Clutch Cover Bolt Belt Guard 4 Reassemble the clutch cover and the belt guard and adjust the belt tension Figure 27 illustrates the components Slide forward to remove Figure 27 WARNING Never use a wheel which has breakage cracks or distortion The wheel may break while operat ing and may result in serious injury Always check the condition of the cut off wheel before starting the engine Make sure there are no breaks cracks or warps See Figure 28 A faulty wheel must be replaced with a new one The tips of a diamond wheel should be sharpened regularly to maintain cut ting ef ciency See page 22 Figure 28 Cracks Missing Tips Worn Tips Distortion or Warps Checking the Cut off Wheel 21 Replacing the Cut off Wheel 1 Make sure the ignition switch is Off and the engine is stopped 2 Insert a 6mm hex wrench into the hole in the belt guard to prevent the drive shaft from turning See Figure 29 Figure 29
25. t to service Check the fuel ller cap regularly during operation to make sure it remains securely tightened This unit must be operated below chest level Operating above chest level may result in serious injury When cutting vertically the unit should be positioned horizon tally or with the wheel side tilted slightly down When cutting horizontally the recoil starter side should face up 6 Inspection and Maintenance Before performing any inspection maintenance repair or cleaning of the unit make sure engine and cut off wheel are completely stopped and cooled down Inspection and maintenance operations should be done in a well ventilated location and where there are no combustibles nearby When replacing parts always use Shindaiwa genuine parts Using non Shindaiwa genuine parts may result in serious injury Inspection and maintenance operations not mentioned in this manual should be performed by an authorized Shindaiwa dealer Transport and Storage When carrying the unit make sure engine and cut off wheel are completely stopped Carry the unit with the front handle and with cut off wheel fac ing rearward When storing the unit make sure the cut off wheel is removed and the unit is placed on a secure dry place Keep the unit away from children When storing the unit for more than a few days
26. the parts are damaged 4 Safety Precautions continued WARNING Figure 1 Start the engine at least 3 meters from a fueling location Starting The Engine Start the engine at least 3 meters away from a fueling location When starting the engine make sure the cut off wheel does not touch any object or ground As soon as the engine starts the cut off wheel may begin to rotate Fueling the Unit Mixing fuel and engine fuel ing must be done outside and where no other combustibles are nearby Start the engine according to the instructions in this manual Start the engine on a rm stable surface Make sure the area is clear of bystanders Starting the engine must be done by only one person without any assis tance The cut off wheel should not rotate at engine idle If it does reduce idle speed Never leave the unit running unattended Before Operation continued Before cutting into a mate rial familiarize yourself with the risks associated with dust fumes or mists that may be generated during opera tion Make sure you provide adequate protection against harmful emissions A high performance respirator and or water attachment may be required Do not use the cut off saw to cut or disturb asbestos or products containing or wrapped in asbestos If you believe you might be cutting asbestos contact your supervisor
27. ver See Figure 22 Turn clockwise to increase idle speed Adjust idle speed so the cut off wheel does not rotate at idle Recommended idle speed 2 200 2 600 min 1 rpm 19 EC7500 34 High and Low Speed Needle The high and low speed needle is xed and cannot be adjusted Spark Plug Maintenance If the engine becomes hard to start or if idle speed is unstable inspect the spark plug according to the following procedures 1 Remove the spark plug Refer to the procedures on page 13 If the Engine Does Not Start 2 Clean the electrode with a wire brush If necessary adjust the electrode gap The gap should be 0 6mm See Figure 24 Cleaning Cylinder Fins WARNING Before cleaning cylinder ns make sure the engine is cold Dust and debris may accumulate between the cylinder ns and can lead to engine overheating In order to maintain ef cient service cylinder ns should be cleaned once every month Checking the Drive Belt The transmission belt tends to loosen and wear after a period of operation and should be checked and adjusted regularly according the following procedures If the belt is worn torn cracked scratched or otherwise damaged replace it with a new one immediately Adjusting Belt Tension Figure 25 1 Loosen the two bolts in the belt guard by one turn 2 Turn the tension screw so the washer aligns with the mark on the clutch cover 3 Tighten the two bolts in the belt gua
28. y adjusting the idle adjust screw 2 Push the decompression valve in 3 Pull the choke all the way out and push it back to the original position choke open The throttle is auto matically set at a fast idle position 4 Follow Steps 5 though 12 Starting a Cold Engine previous page Starting a Warm Engine EC7500 24 If the Engine Doesn t Start Figure 11 3 Unscrew the two bolts securing the lter element remove the lter ele ment See Figure 12 Figure 12 Choke 4 Remove the plug cap and discon nect the spark plug by using the plug wrench See Figure 13 Check to see if the spark plug electrode is fuel soaked 5 If the spark plug is wet dry it com pletely Clear excess fuel from the combustion chamber by cranking the engine several times with the spark plug is removed 6 Reassemble the spark plug plug cap lter and cleaner cover 7 Follow the appropriate starting procedure described above 8 If the spark plug is dry fuel is likely not being supplied to the combus tion chamber properly Check the fuel lter and carburetor Refer to the Inspection and Mainte nance Section Refer to the Troubleshooting Sec tion page 24 If the engine still does not start con tact your Shindaiwa dealer Stopping the Engine EC7500 25 Figure 13 Let the engine run at idle speed for 2 3 minutes then turn the on off switch Off 14 EC7500 27 WARNIN
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