Shindaiwa 68002-94310 Owner's Manual
Contents
1. Figure 27 20 Cracks Missing Tips Worn Tips a EC7500 47 Distortion or Warps Figure 28 Technical Specifications Engine Type ssssssssssnnsssnnssnnsnns 2 Cycle vertical cylinder air cooled Displacement 4 5 cu in 73 5cc Bore x Stroke 2 x 1 4 in 51 x 36mm Max Power Output 4 5 hp 3 3kW Recommended Engine Idling Speed 0 2 500 min rpm Recommended Maximum Engine Speed 10 550 min rpm Maximum Cutting Depth EC7500 Abrasive Wheel 12 in 305mm 4 in 102mm Diamond Wheel 12 5 in 320mm 4 4 in 109mm Maximum Cutting Depth EC7600 Abrasive Wheel 13 9 in 855mm 5 in 127mm Diamond Wheel 14 1 in 360mm 5 1 in 129mm Rated Spindle Speedt EG7500 inonsan 3 800 min rpm EC7600 ciiis 3 320 min rpm Maximum Spindle Speedt EC7500 eee 4 220 min rpm EC7600 ecssces 3 680 min rpm Maximum Peripheral Wheel Speedt EC7500 13 300 ft min 67 5m sec EC7600 13 500 ft min 68 0m sec Speed Reduction Ratio EC7500 iscan 2 50 1 EC7G600 ei tees si ccetevecetiiehiateene 2 87 1 Type of Fuel Unleaded gasoline plus 2 cycle engine oil 50 1 Fuel Tank Capacity 800ml Carburetor Type 00 Diaphragm Ignition System cee Electronic Spark Plug 0 Champion CU6Y Engine Starting Stopping 00 Toggle2. 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 2481 2002 Shindaiwa Inc Part Number 68002 94310 Shindaiwa is a registered trademark of Shindaiwa Inc SHINDAIWA OWNER S AND OPERATOR S MANUAL EC7500 EC7600 ENGINE CUTOFF SAW era version E Read this manual and familiarize yourself with its contents E This unit is designed primarily for cutting construction materials and metal according to the type of cutting wheel installed E To minimize the risk of injury to yourself and others always wear hearing protection a dustproof mask goggles and a helmet when operating this unit E Keep this manual handy so you can refer to it when required Part Number 68002 94310 Rev 12 02 Contents Page Attention Statements cccceeeeeeee 2 Labels and Symbols ccceseeseseeeeee 2 Safety Precautions seereis 3 Safety Operation Information Labels 7 Unit Description ssseesssetirssnirrsnns 8 Technical Specifications cccee 9 ASSEMDILY eesin 10 Filling the Fuel Tank ee 11 Starting Stopping the Engine 12 Operation epearekin E Nre 14 Inspection and Maintenance 16 Long Term Storage cccccsecseeees 23 Troubleshooting s o eeseseeeesesesesesesesese 24 Emission
3. speed make about 10 passes at cutting a concrete block or a soft brick Keep the block watered while sharpening Checking the Fuel Filter A vanna KEEP AWAY FROM FIRE OR EXCESS HEAT 1 Remove the fuel filler cap 2 Take the filter out from the fuel opening by using a hooked wire If the filter 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 Hooked Wire Fuel Filter Figure 30 3 Put the filter back into the fuel tank Make sure the fuel tube is not bent and the filter stays at the bottom of the tank 4 Put the fuel filler cap back and tighten it securely 22 Lubricating the Clutch Bearing Grease the clutch bearing every 20 hours of operation Squeezing a grease gun three times will deliver an appropriate amount of grease See Figure 31 Safety and Operation Information Labels Grease Gun Figure 31 IMPORTANT nears Q Make sure all safety and operation 4 information labels are undamaged OR LOCK THE GUARD Free Lock and readable Immediately replace damaged or missing safety and operation information labels which are available from your authorized Shindaiwa dealer DECOMPRESSION PRIMER ENGINE START PROCEDURES EC7500 1 Figure 4 Unit Description Air Cl
4. Refer to the Troubleshooting Section page 24 If the engine still does not start contact your Shindaiwa dealer Stopping the Engine Let the engine run at idle speed for 2 3 minutes then turn the on off switch Off 13 Operation A wannine E 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 fitting clothing safety gloves safety non skid footwear hearing protection a dust proof mask a helmet and goggles A anna 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 14 Adjusting Wheel Guard Angle Adjust the position of the wheel guard so that fragments will not fly tow
5. even death due to exhaust gas Never allow any people or animals near exhaust gas Never inhale exhaust gas Never make unauthorized modifications or alterations to any of the components of the unit and never operate the unit without the wheel guard or muffler 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 influence of any substance that could impair vision dexterity or judgement When operating the unit always wear snug fitting clothing safety gloves safety non skid footwear hearing protection a dust proof mask a helmet and goggles Never wear floppy clothing shorts sandals or accessories that could become entangled 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 flame retardant Never use any cut off wheel that is not recommended in this manual Do not start or operate the unit unless you have a clear work area and secure footing Never smoke or use fire near the unit or its fuel Since the muffler and exhaust gas become very hot make sure there are no flammable substances near the unit Never run the unit if you discover a fuel leak A first time operator should obtain practical instruction from a dealer or an experienced user before using the unit Make sure all the components are in
6. under PARTS COVERED the dealer authorized by Shindaiwa Kogyo Co Ltd will at no cost to you make the necessary diagnosis repair or replacement of any defective emission related component to ensure that the engine complies with applicable U S EPA regulations MANUFACTURERS WARRANTY COVERAGE When sold within the U S this engine s emission control system is war ranted for a period of two 2 years from the date this product is first delivered to the original retail purchaser OWNER S WARRANTY RESPONSIBILITIES As the engine owner you are responsible for the performance of the re quired maintenance listed in your owner s manual Shindaiwa Kogyo Co Ltd recommends that you retain all receipts covering maintenance on your engine but Shindaiwa Kogyo Co Ltd cannot deny a warranty claim solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance As the engine owner you should however be aware that Shindaiwa Kogyo Co Ltd may deny your warranty coverage if your engine or a part has failed due to abuse neglect improper maintenance or unapproved modifications You are responsible for presenting your engine to the nearest dealer authorized by Shindaiwa Kogyo Co Ltd when a problem exists If your Shindaiwa Dealer is unable to answer questions regarding your warranty rights and responsibilities you should then contact your Shindaiwa Distributor For the name and telephone num
7. Warranty Statement 25 Shindaiwa Inc reserves the right to make changes to products without prior notice and without obligation to make alterations to units previously manufactured Attention Statements Throughout this manual are special attention statements A statement preceded by the word WARNING contains information 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 prevent unit damage IMPORTANT A statement preceded by the word IMPORTANT is one that possesses special significance NOTE A statement preceded by the word NOTE contains information that is handy to know and may make your job easier 2 Labels and Symbols The following are symbols that appear on the unit Read and follow the operator s manual Failure to do so could result in serious injury Always wear hearing protection a dustproof mask goggles anda helmet when operating this unit Fuel Filler Choke The following symbols are meant to provide important reminders Be aware of kickback Kickback may force the cutting off wheel up and back toward the operator with a lightning fast reaction Kickback can occur whenever the upper half of the cutting off wheel touches an object while operating the unit Be aware of thrown S objects ZN Using this cut o
8. able amount of time and furnish you with a copy of the repair order All parts and accessories replaced under this warranty become the property of Shindaiwa Kogyo Co Ltd To locate an authorized Shindaiwa dealer near you contact your Shindaiwa Distributor For the name and telephone number of the Shindaiwa Distributor in your area please call Shindaiwa Inc at 503 692 3070 between the hours of 8 00 AM and 5 00 PM Pacific Standard Time THIS WARRANTY IS ADMINISTERED BY Shindaiwa Inc 11975 S W Herman Rd Tualatin OR 97062 503 692 3070 27 PARTS COVERED Listed below are the parts covered by the Federal Emission Design and Defect Warranty Some parts listed below may require scheduled maintenance and are warranted up to the first scheduled replacement of that part The warranted parts include 1 Carburetor Internal Components e Valve Assembly throttle Jet Metering Diaphram 2 Ignition System Components e Ignition Coil e Flywheel Rotor The emission control system for your particular Shindaiwa engine may also include certain related hoses and connectors LIMITATIONS The Federal Emission Design and Defect Warranty shall not cover any of the following a conditions resulting from tampering misuse improper adjustment unless they were made by the dealer or service center authorized by Shindaiwa Kogyo Co Ltd during a warranty repair alteration accident failure to use the recommended fuel and oil or not perform i
9. ard 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 Wheel Wheel Guard Wheel Guard Guard Locked Free C Figure 14 Cutting This unit performs most efficiently when cutting between 8 500 and 9 500 mint 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 mint rpm Too much pressure to the wheel will lower wheel speed reduc ing cutting efficiency 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 acceler ate the speed Reversing cutting head for flush cutting operations Ad warna 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 NX 6mm Socket Head Bolts Tension Screw Tension 3 Using a 6mm hex wrench remove the two belt guard bolts and slide the belt guard forward to remove NOTE See Figure 17 For units equipped with a water kit loosen the 2 water nozzles and disconnect the main water line from the double nozzle 1 Remove the cutting wheel See pages 10 and 11 Using a Phillips screwdr
10. ber of the Shindaiwa Distributor in your area please call Shindaiwa Inc at 503 692 3070 between the hours of 8 00 AM and 5 00 PM Pacific Standard Time 25 Troubleshooting PROBLEM The engine does not start Make sure the fuel tank contains with clean fresh fuel pg 11 Remove the spark plug pg 13 Is the spark Is the spark plug wet plug dry Dry the spark plug Replace the fuel filter pg 22 Inspect the spark plug pg 19 Pull the recoil starter several times to remove fuel from the cylinder PROBLEM Cutting performance is poor Make sure the choke is pushed fully in Make sure the air cleaner is clean pg 17 Make sure the cut off wheel is appropriate for your work Make sure the diamond wheel is sharp Make sure the drive belt is properly tightened pg 19 Make sure the carburetor is is properly adjusted pg 18 If the above inspections and maintenance procedures do not correct the problem contact your Shindaiwa dealer for assistance 24 Safety Precautions continued Kickback E Kickback may force the cut off wheel up and back toward the operator lightning fast E 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 C7500 14 Figure 2 Always be aware of and prepared for kickback Operation E The unit must be held firmly with both hands one hand
11. d dry place and where combustibles are not nearby Long Term Storage Whenever the unit will not be used for 30 days or longer use the following procedures to prepare if for storage E Clean external parts thoroughly E 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 3 Repeat Steps 1 and 2 until the engine 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 mainte nance costs E Remove the spark plug and pour about 1 4 ounce of 2 cycle mixing oil 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 E Before storing the unit repair or replace any worn or damaged parts E 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 thoroughly E Store the unit is a clean dust free area 23 Sharpening a Diamond Cut off Wheel While running the engine at low
12. e oil ratio Examples of 50 1 mixing quantities E 1 gallon gasoline to 2 6 oz mixing oil E 5 liters gasoline to 100ml mixing oil IMPORTANT Mix only enough fuel for your immedi ate needs If fuel must be stored longer than 30 days and oil with fuel stabilizer is not used it should first be treated with a fuel stabilizer such as StaBil 1 Use a container to pre mix gasoline and oil Pour oil in first then add gasoline 2 Remove the fuel filler cap by turning counterclockwise 3 Fill the tank with the mixed fuel then tighten the fuel filler cap securely 4 Any spilled fuel must be wiped up completely Make sure the unit has no fuel leaks 11 Starting the Engine When the Engine is Cold A anme E Before starting the engine place the unit on a clean level surface Make sure you have good secure footing and always keep a firm grip on the unit Move at least 10 feet 3m 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 1 Turn the on off switch On 2 Depress the primer pump a few times repeatedly until the primer pump is almost filled with fuel See Figure 9 Figure 9 3 Push the decompression valve In 4 Pull the choke all the way out choke closed The thr
13. eaner Muffler Cover Carburetor Idle Adjustment Screw Wheel Guard Decompression Lock Knob Valve Rear Pump Clutch Cover Handle Front Handle Recoil Starter Throttle Trigger Lockout Cut off Wheel Cylinder Cover Throttle Fuel Filler ON OFF _ Trigger Cap Switch Figure 5 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 Replacing the Cut off Wheel EC7500 20A Belt Guard Hex Wrench Outer Outer Flange Flange Bolt Wrench Q lo Tighten ae t Na Loosen EC7500 20 Figure 29 3 Loosen the outer flange bolt with the wrench and remove the bolt and outer flange 4 Before mounting a cut off wheel determine its arbor diameter If necessary remove the snap ring from the arbor install the correct collar then re install the snap ring g anne 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 flange 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 f war
14. ff 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 fire MAINTENANCE REPLACEMENT OR REPAIR OF EMISSION CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED BY ANY REPAIR ESTABLISHMENT OR INDIVIDUAL HOWEVER WARRANTY REPAIRS MUST BE PERFORMED BY A DEALER OR SERVICE CENTER AUTHORIZED BY SHINDAIWA KOGYO CO LTD THE 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 A WARRANTY CLAIM If other than the parts authorized by Shindaiwa Kogyo Co Ltd are used for maintenance replacements or for the repair of components affecting emission control you should assure yourself that such parts are warranted by their manufacturer to be equivalent to the parts authorized by Shindaiwa Kogyo Co Ltd in their performance and durability OBTAINING WARRANTY SERVICE All repairs qualifying under this limited warranty must be performed by a dealer authorized by Shindaiwa Kogyo Co Ltd If any emission related part is found defective during the warranty period it is your responsibility to present the product to an authorized Shindaiwa dealer Bring your sales receipts showing the date of purchase for this engine The dealer authorized by Shindaiwa Kogyo Co Ltd will perform the necessary repairs or adjustments within a reason
15. h 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 automatically set at a fast idle position 4 Follow Steps 5 though 12 Starting a Cold Engine previous page If the Engine Doesn t Start If the engine fails to start repeat the appropriate starting procedure for a cold or warm engine A wanna Keep well away from fire 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 Choke Figure 11 3 Unscrew the two bolts securing the filter element remove the filter element See Figure 12 EC7500 24 Figure 12 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 EC7500 25 Figure 13 5 If the spark plug is wet dry it completely 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 filter 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 E Check the fuel filter and carbure tor Refer to the Inspection and Maintenance Section E
16. hten the two bolts in the belt guard Tension Screw Mark Bolt oup ot Guard DA Cover Washer m EC7500 34A Figure 25 19 Adjusting the Carburetor It is not necessary to adjust the carburetor when the unit is new Adjust the carburetor only when you are sure it is necessary due to differ ences in working 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 accor dance with the following procedures Awannine 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 carburetor adjustment 1 Prior to adjusting clean the air filter as described on the previous page and then run the engine for a few of minutes at idle speed to warm up the engine 18 Adjusting Idle Speed To adjust idle speed turn the Idle Adjust Screw with a screwdriver 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 rpm 4 Loosen bolt with the wrench and remove bolt and outer flange See Figure 8 Figure 22 Outer Flange Bolt e Sy igen ity Vs Lo
17. iver loosen the tension screw until the tension indicator is all the way to the front of the scale See Figure 15 Indicator Figure 15 4 Remove the blade mount from the mounting surface and rotate the blade mount 180 then remount to the right hand side of mounting surface See Figure 18 Tension Screw Figure 16 2 Back off tension screw 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 15
18. ly 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 E The cut off wheel coasts for a while after the engine is stopped Keep hold of the unit firmly until the wheel stops completely and then place it on the ground Inspection and Maintenance E 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 ina 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 E 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 facing 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 empty the fuel tank completely Store gasoline and mixed fuel in a close
19. ng required maintenance services b the replacement parts used for required maintenance services c consequential parts used for required maintenance services d diagnosis and inspection fees that do not result in eligible warranty service being performed and e any non authorized replacement part or malfunction of authorized parts due to use of non authorized parts MAINTENANCE AND REPAIR REQUIREMENTS You are responsible for the proper use and maintenance of the engine You should keep all receipts and maintenance records covering the performance of regular maintenance in the event questions arise These receipts and maintenance records should be transferred to each subsequent owner of the engine Shindaiwa Kogyo Co Ltd reserves the right to deny warranty coverage if the owner has not properly maintained the engine Shindaiwa Kogyo Co Ltd will not deny warranty repairs however solely because of the lack of repair maintenance or failure to keep maintenance records 26 Safety Precautions A waasnine Before Operation E 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 ina closed area such as a room warehouse or tunnel Running the unit in a closed area may cause serious illness or
20. nine Make sure the replacement cut off wheel rpm rating is greater than the speed indicated on the wheel guard label Label Showing Rated and Maximum Spindle Speed Label Showing Direction of Rotation 07500 42 Diamond Wheel Guard Wheel CAUTION Make sure the rotating direction of wheel corresponds to the one indicated on the wheel guard Make sure there is no dust around the outer flange 21 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 Slide forward to remove Clutch Tension Cover Screw Bolt Belt Guard Figure 26 Checking the Cut off Wheel A warno Never use a wheel which has breakage cracks or distortion The wheel may break while operating 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 cutting efficiency See page 22 4 Reassemble the clutch cover and the belt guard and adjust the belt tension Figure 27 illustrates the components r o A 8 g i EC7500 36
21. on the rear handle the other on the front handle Never hold onto any other part of the unit ee ats me cole TAS Ja Figure 3 Always operate EC7S00 14 below chest level E 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 Never impact or apply pressure to the sides of the cut off wheel for any reason Maintain firm and stable footing during operation Do not over reach When working in a group make sure operators are least 30 feet 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 damage have it repaired before you return the unit to service Check the fuel filler cap regularly during operation to make sure it remains securely tightened Safety Precautions continued A wannine Operation continued E If you discover fuel leakage immediately stop the engine E Cutting may cause sparks from the cut off wheel Make sure there is no flammable sub stances nearby Never cut live electrical wires The shock you might receive could be very serious Do not touch hot parts such as the muffler or cylinder You could burn yourself severe
22. osen EC7500 20 Figure 8 5 Place cut off wheel so the inner bore is properly set onto the collar Filling the Fuel Tank A wannine Using an inappropriate cut off wheel may cause the wheel to break and may result in serious injury 6 Replace outer flange 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 A wanne E When filling the fuel tank make sure the engine is stopped and cool E Filling the fuel tank or mixing fuel and oil must be done ina place where there is no risk of fire CAUTION Some gasolines contain alcohol as an oxygenate Oxygenated fuels may cause increased operating temperatures Under certain conditions alcohol based fuels may also reduce the lubricating qualities of some mixing oils Never use any fuel containing more than 10 alcohol 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 operate on a 50 1 mixture consisting of unleaded gasoline and premium 2 cycle mixing oil only E Use only fresh clean unleaded gasoline with a pump octane of 87 or higher E Mix all fuel with a premium 2 cycle air cooled mixing oil at a 50 1 gasolin
23. ottle will automatically be set to fast idle See Figure 9 5 Place the unit on firm 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 Figure 10 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 E The recoil starter can be damaged by abuse Never pull the starter cord to its full length E Always engage the starter before cranking the engine E Always rewind the starter cord slowly Do not just let go of the cord 9 When the engine fires 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 first depressing the lockout lever Operating the throttle will automati cally disengage the fast idle setting 12 Let the engine run at idle speed for 2 3 minutes to warm up Cleaning the Air Cleaner A warnine Inspection and maintenance should be done in a well ventilated place and where there is no risk of fire Dust in the air cleaner will affect engine life The air filter must be cleaned every time y
24. ou start operating Clean the air filter once a day and replace the filter every 20 hours of operation according to the following 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 filter 3 Remove the pre filter from the filter 4 clean the pre filter with soap and water and let dry 5 If compressed air is available blow air from inside the filter to remove dust If compressed air is not available remove dust by gently tapping the element on a hard surface Unscrew the Knob and Pre filter 7500 24 Figure 21 IMPORTANT When cleaning the filter the filter housing and the inside of the cleaner cover should also be cleaned 6 Replace the pre filter onto the filter and reassemble them into the filter housing Make sure both filter bolts are securely tightened 7 Reinstall the cleaner cover and make sure the knob is securely tightened 17 Reversing cutting head for flush cutting operations cont 6mm Socket Head Bolts 6 Adjust the tension screw until the tension indicator is in the middle of the scale See Figure 20 Figure 19 5 Making sure that the drive belt is fully engaged in the drive pulleys 7 Tighten the two mounting bolts slide the belt cover on and in
25. place and the bolts are securely fastened Make sure the cut off wheel is securely fastened and is not damaged Never use a cut off wheel with cracks distortion or one that is unbalanced Make sure the belt tension is properly 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 the parts are damaged Safety Precautions continued Awannine Before Operation continued Before cutting into a material familiarize yourself with the risks associated with dust fumes or mists that may be generated during operation Make sure you provide adequate protection against harmful emissions A high performance respirator and or water attachment may be required H Do not use the cut off saw to cut or disturb asbestos or products containing or wrapped in asbes tos If you believe you might be cutting asbestos contact your supervisor Fueling the Unit E Mixing fuel and engine fueling must be done outside and where no other combustibles are nearby Figure 1 Start the engine at least 10 feet 3 meters from a fueling location 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 running After fueling wipe all spilled fuel Cutting metal may cause sparks f
26. rom the cut off wheel and may ignite spilled fuel which could result in serious injury Starting The Engine E Start the engine at least 10 feet 3m away from a fueling location E 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 Start the engine according to the instructions in this manual Start the engine on a firm stable surface Make sure the area is clear of bystanders Starting the engine must be done by only one person without any assistance The cut off wheel should not rotate at engine idle If it does reduce idle speed Never leave the unit running unattended The following statement only applies to United States and its territories Shindaiwa Kogyo Co Ltd Federal Emission Design And Defect Limited Warranty Utility And Lawn And Garden Engines Shindaiwa Kogyo Co Ltd warrants to the initial purchaser and each subsequent owner that this utility equipment engine herein engine is designed built and equipped to conform at the time of initial sale to all applicable regulations of the U S Environmental Protection Agency EPA and that the engine is free of defects in materials and workmanship that would cause this engine to fail to conform with EPA regulations during its warranty period This emission warranty is applicable in all States except the State of California For parts listed
27. stall securely the two socket head bolts into the 8 Reconnect the main water line left hand side of the mounting adjust and retighten water nozzles surface only until the bolts bottom if equipped with a water kit on the belt cover See Figure 19 9 Inspection and Maintenance MAINTENANCE REPLACEMENT OR REPAIR OF EMISSION CONTROL DEVICES AND SYSTEM MAY BE PERFORMED BY ANY REPAIR ESTABLISH MENT OR INDIVIDUAL HOWEVER WARRANTY REPAIRS MUST BE PER FORMED BY A DEALER OR SERVICE CENTER AUTHORIZED BY SHIN DAIWA KOGYO LTD AND USE OF PARTS THAT ARE NOT EQUIVALENT IN PERFOR MANCE 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 Inspection and Maintenance Requirements Reinstall the cutting wheel Item What to Do Daily Weekly Monthly As Req d Air Cleaner Clean Y Cut off Wheel Check amp Sharpen Y Bolts Screws Check amp Retighten Y Fuel Cap Check Leakage Y Fuel Tank Check Leakage Y Wheel Guard Check Function Y Clutch Bearing Grease Y Belt Check and Adjust Vv Spark Plug Check and Clean Y Cylinder Fins Clean Y Fuel Filter Clean Y Carburetor Adjust Y 16 Starting a Warm Engine 1 Turn the on off switch On WARNING The cut off wheel must not rotate at idle speed If it rotates reduce idle speed by adjusting the idle adjust screw 2 Pus
28. switch recoil starter Power Transmission Automatic centrifugal clutch V ribbed belt Anti Vibration System Unified handles with 7 point support Safety Devices Throttle lock out wheel guard Dry Weight without wheel EC7500 accxccetcaczessszi 22 Ibs 10 0kg EC7600 cise 23 Ibs 10 5kg Dimensions L x W x H EC7500 29 1 x 8 6 x 14 7 in 740 x 220 x 375mm EC7600 30 1 x 8 6 x 15 3 in 765 x 220 x 390mm Sound Pressure Levelt EC7500 i accscceetvseces acts 101 dB A EC7600 nrin 101 dB A Sound Power Leveltt EC7500 cccecesccesesteeseees 108 dB A ECT600 anoen 111 dB A Vibration Level Front handle idle rated spindle EC7500 ooien 6 96 5 48m sec EC7600 10 09 10 49m sec Rear handle idle rated spindle EG 7500 ririri 8 61 14 60m sec EC7600 0 8 93 13 70m sec Recommended Cut off Wheels EC7500 abrasive 12 in 305mm dia EC7500 diamond 12 5 in 320mm dia EC7600 abrasive 13 9 in 355mm dia EC7600 diamond 14 2 in 860mm dia Arbor Sizes ccssees 0 78 20mm 0 86 22mm and 1 0 25 4mm Measured in accordance with EN ISO 11201 1995 Measured in accordance with ISO 7293 1983 t Measured with 305mm wheel EC7500 and 355mm wheel EC7600 tt Measured in accordance with EN ISO 3744 1995 Measured in accordance with EN 28662 1 1992 Assembly Prior to Assembl
29. the engine is stopped 3 Insert a hex wrench into the hole in the belt guard to prevent the arbor from turning See Figure 7 High and Low Speed Needle The high and low speed needle is fixed 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 Jf the Engine Does Not Start 2 Clean the electrode with a wire brush If necessary adjust the electrode gap The gap should be 0 024 0 6mm See Figure 24 0 024 0 6mm Figure 24 EC7500 20A Figure 7 Cleaning Cylinder Fins WARNING Before cleaning cylinder fins make sure the engine is cold Dust and debris may accumulate between the cylinder fins and can lead to engine overheating In order to maintain efficient service cylinder fins 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 Tig
30. y 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 find any damage or missing items check with your dealer Engine Unit EC7500 19 Instruction Manual Tool Set Figure 6 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 0 78 20mm 0 86 22mm 1 0 25 4mm Wheels for EC7500 Abrasive 305mm outer diameter Diamond 320mm outer diameter Wheels for EC7600 Abrasive 355mm outer diameter Diamond 360mm outer diameter 10 IMPORTANT This unit is Drive Shaft Collar equipped with a 0 86 22mm wheel collar Wheel adapters for 20mm and 25 4mm cut off wheels are located in the Flange lt lt snap tool set Before Ring mounting a EC7500 49 wheel deter mine its arbor diameter If it is necessary to replace the collar remove the snap ring on the arbor install the correct size arbor collar and then replace the snap ring Awasnine Use of the incorrect collar size OOO 20mm 22mm 25 4mm Collar Collar Collar may lead to wheel failure and unit failure that could result in serious injury 2 Make sure the ON OFF switch is Off and
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