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david brown 1210 workshop manual filetypeExact model application: Models Application: Sterndrive (MCM) starting with serial number OM300000 and above, 5.0L MPI Alpha and Bravo, 350 MAG MPI Alpha and Bravo, 350 MAG MPI Alpha and Bravo Horizon, MX 6.2 MPI, MX 6.2 MPI Horizon, Inboard and Dow Sports (MIE) starting with serial number OM310000, 350 MAG MPI Inboard, 350 MAG MPI Horizon Inboard, MX 6.2 MPI Inboard, MX 6.2 MPI Horizon Inboard and 350 MAG MPI Tow Sports. Some Standard Bravo Transom Assemblies could have been converted to High Performance Transom Assemblies by use of a High Performance Gimbal Ring Kit (822374A2). Refer to Transom Assembly sections of this manual for identification information. Bravo One XR (Serial Number 0W240000 and Above). Bravo Two, Bravo Two X, Bravo Two X Diesel, Bravo Three, Bravo Three X, Bravo Three X Diesel (Serial Number 0M198373 and Above). Bravo Three XR (Serial Number 0W240000 and Above). Transom Standard (Serial Number 0W173658 and Above) Transom High Performance(Serial Number 0W150260 and Above) Inboard (MIE) Models: D2.8L D-Tronic (Serial Number 0K000001 and Above), D4.2L D-Tronic (Serial Number 0K000001 and Above). General knowledge information is not included. Please read the GENERAL INFORMATION section to familiarize yourself with basic information concerning the inboard engine or stern drive. Read and refer to the other sections in this manual for information regarding proper inspection and service procedures. If a modification has been made since then, differences may exist between the content of these manuals and the actual inboard or stern drive. Persons without such knowledge and skills should attempt with caution to service any component or engine by relying on this manual only. Never attempt to perform any work with out the assistance of a service manual. Improper repair may result in injury to the mechanic and may render the engine unsafe for the boat operator and passengers.http://ankamet.com/userfiles/bss-gs724t-manual.xml
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However, individual operating habits and personal maintenance preferences can have an impact on the suggested intervals. In consideration of these factors, Mercury MerCruiser has adjusted some maintenance intervals and the corresponding tasks to be performed. In some cases, this may allow for more individual tasks in a single visit to the servicing dealer. Therefore, it is very important that the boat owner and the servicing dealer discuss the current Maintenance Schedule and develop appropriate maintenance intervals to coincide with the individual operating habits, the environment and the maintenance requirements. If operating in salt, brackish or polluted waters, flush the cooling system after each use. Check the drive unit oil level, the trim pump oil level and the power steering pump fluid level. Check the water inlets for debris or marine growth. Check the seawater strainer and clean. Check the coolant level. Clean the gauges. Replace the fuel filters. Check the steering system and the remote control for loose, missing or damaged parts. Lubricate the cables and the linkages. Inspect the U-joints, the splines and the bellows. Check the clamps. Check the engine alignment. Lubricate the U-joint splines. Lubricate the gimbal bearing and the engine coupler. Check the continuity circuit for loose or damaged connections. Test the MerCathode unit output on Bravo Models. Replace the PCV valve. Check the electrical system for loose, damaged or corroded fasteners. Inspect both systems for damage or leaks. Disassemble and inspect the seawater pump and replace worn components. Clean the seawater section of the closed cooling system. Clean, inspect and test the pressure cap. Replace the coolant. This oil is a special blend of 25-weight and 40-weight oils for marine engines.The oil filter should always be changed when changing the engine oil. When the old plugs are replaced, replace the entire set.http://cq2sc.com/userfiles/bss-omnidrive-355-manual.xml Perform plug service only on those plugs suitable for additional service, using the following procedures: Use compressed air to remove abrasives. 4. File the electrode surfaces to restore clean, sharp edges. Remove filings with compressed air. 5. Reset the gap to specifications by bending only the side electrode with the proper tool. This plug shows that the plug heat range is compatible with the engine, and the engine is electrically and mechanically in good running condition. With proper plug servicing (clean, file and regap), this plug can be reinstalled with good results. Worn piston rings, cylinder walls, valve guides or valve stem seals are causes of oil entering the combustion chamber. Only engine repairs will permanently relieve oil wet fouling. Such fouled plugs may be serviced (clean, file and regap) and reinstalled. Determine the cause of the excess water. 1.5 Improperly adjusted trim tabs or after planes 1.5 Adjust the trim tabs or after planes 1.6 Dirty boat bottom (marine growth) Repair the hull. Reinstall the water pickup or the through the ull fittings in the proper locations. Repair the transom. Reinstall the drive unit in the proper position. 1.5 Wrong gear ratio drive unit 1.5 Replace the drive unit with the appropriate gear ratio. If the problem persists, drain the fuel tank and refill. If the problem persists, check the remote control level NEUTRAL detent setting. 1.1 Battery charge low, damaged wiring, loose electrical connections 1.1 Check the electrical connections at the starter. Check the battery cable connections. Check the battery charge and recharge if necessary. 1.2 Circuit breaker tripped 1.2 Reset the circuit breaker. 1.3 Blown fuse 1.3 Replace the fuse. 1.4 Ignition switch faulty 1.4 Replace the ignition switch. 1.5 Slave solenoid faulty 1.5 Replace the slave solenoid. Noise will stop as soon as engine is turned off. 1.0 Wrong spark plugs 1.0 Change the spark plugs. 1.1 Cracked distributor cap 1.https://www.becompta.be/emploi/3m-touch-screen-monitor-manual1 Check the distributor cap for cracks or marks. Replace the cap if necessary. 1.2 Cracked coil tower 1.2 Check the ignition coil for cracks or corrosion. Replace the throttle body if necessary. 1.2 Worn or leaking IAC hose or vacuum hose to the pressure regulator 1.2 Find and replace the leaking hose. 2. Low top speed or lack of power 2.0 Leaking idle air control (IAC), intake manifold or throttle body gaskets 2.0 Find and replace the leaking gaskets. 3. Poor cold engine operation 3.0 Engine is not reaching normal operating temperature 3.0 Replace thermostat or thermostat housing gasket. 3.1 Faulty engine temperature sensor (ECT) 3.1 Replace the ECT. 3.2. Fuel PSI too high or too low 3.2 Determine the cause and repair. 3.3 Throttle valves worn or damaged 3.3 Inspect the throttle valves. Replace the throttle body if necessary. 3.4 Engine flooding 3.4 Check the fuel pressure. If too high, find cause and correct. Clean the flame arrestor. Perform the cylinder balance test. 4. Engine stalls 4.0 Idle rpm too low 4.0 Clean the flame arrestor. Test the IAC to see if it opens and closes properly. 4.1 Engine flooding 4.1 Check the fuel pressure. Inspect the fuel pressure regulator. Inspect the injectors. 4.2 Leaking idle air control (IAC), intake manifold or throttle body gaskets 4.2 Find and replace the leaking gaskets. 5.0 Engine misses 5.0 Fault in the ignition system 5.0 Check the spark plugs. Check the spark plug wires. Check the distributor cap for cracks or marks. Check the ignition coil operation. Replace the faulty component. A downloadable MerCruiser repair manual is a digitally delivered book of instructions that guides the mechanic in the proper procedures for maintenance, service, overhaul and troubleshooting of components (e.g engine, electrical, drives, cooling, exhaust, fuel system, etc.) to factory specifications.https://www.euralux.com/images/brinkmann-electric-smoker-owners-manual.pdf Generally, every downloadable MerCruiser repair manual contains the following subject matter, chapters or sub-chapters: However, every manual contains all of the information needed to completely maintain, service, troubleshoot, overhaul and restore the complete unit to it's factory specifications. This is especially helpful for people who don’t have a complete understanding of where a part is located, how to remove a part, or assemble parts. This tab allows the user to quickly locate the procedures they need. Simply click on the chapter and you will automatically be brought to it. Moreover, some manuals are bookmarked by chapter and subchapter, this allows the user to find the precise instructions their searching for. Each MerCruiser repair manual is model and year specific, not a vague generic versions. A PDF is a file format that provides an electronic image of text and graphics. It looks like a printed document (manual) and can be printed, viewed and transmitted electronically. However, virtually every computer sold in the last 8 years already comes with a PDF viewer installed. When downloading a PDF manual, if you get an error message that says “file is damaged or cannot be repaired,” follow these instructions: Make sure it matches the file size of the manual that you already downloaded. If both file sizes differ greatly, the manual that you downloaded didn’t finish downloading. If the manual was cut short, you will get an error message. This can happen if you experienced temporary Internet interruption. To resolve, simply download the manual again. To resolve, simply download Adobe for free. You can’t beat the price of a downloadable manual, you get it instantly, it’s the same as the manual you’d buy in stores, and more convenient. Nice to be able to obtain a manual instantly. Mainly needed the intake manifold torque specs for my 1976 mercruiser 470, which I found in the manual within a minute. Any suggestions?https://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16288b5a32015e---cannon-fodder-enter-word-manual.pdf Does the manual for my model have a troubleshooting guide. I checked the ignition switch, ignition timing, spark plug wires, battery, electrical connections and for damaged wiring. Also checked the distributor cap. Still haven’t figured out the problem. Friend also want’s to know if the manual shows how to adjust valves on 3 liter mercury marine engine. The engine is year is 1979. The engine is year is 1979. The number 4 service manual I currently have does not list part numbers. I need to get the service manual for this engine and I’m not sure which manual to select. I did not see one for the LX engine. Please let me know which manual to select. Thanks. Something went wrong. All Rights Reserved. User Agreement, Privacy, Cookies, and AdChoice Norton Secured - powered by Verisign. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Marine Boat Repair Workshop Guide. To get started finding Marine Boat Repair Workshop Guide, you are right to find our website which has a comprehensive collection of manuals listed. Our library is the biggest of these that have literally hundreds of thousands of different products represented. I get my most wanted eBook Many thanks If there is a survey it only takes 5 minutes, try any survey which works for you. This DOWNLOAD contains of high quality diagrams and instructions on how to service and repair your Mercury Mariner Outboard..you can download it, This is a must for the Do-It-Yourselfer! Checking it out for price. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Mercury 6 Hp Outboard Manual. To get started finding Mercury 6 Hp Outboard Manual, you are right to find our website which has a comprehensive collection of manuals listed. The handbook is often used by do-it-yourself mechanics and dealership technicians to overhaul, restore or perform maintenance based on the boat motor manufacturer specifications.www.cmevalves.com/pictures/files/98-mazda-protege-repair-manual.pdf However, it’s probably best to download a manual to a tablet or computer for more efficient viewing. Keep reading to learn how a Mercury repair manual download can help you. Once a copy of the manual has been downloaded to your electronic device, such as a computer. It can be saved to the downloads folder or desktop forever. But with a download Mercury repair manual, you can print out only the page(s) you need to complete the repair work—and throw them in the trash when you’re done. You can even print out the entire Mercury manual if need be. Aside from being very expensive, it can take weeks to finally receive it in the mailbox. However, with a download Mercury repair manual, you can literally get one transferred to your electronic device in under 3 minutes. And organized in the order of importance. In many cases the digitally delivered book contains clickable chapters and subchapters, allowing the user to navigate to parts of the book with the click of the mouse. It also contains torque specifications and other data. Maintenance is important for keeping the boat engine in good condition. Performing routine maintenance also helps to extend the life of the motor. Maintenance schedules are included in every manual, detailing when and how each part should be maintained. Because outboard maintenance is so incredibly important, every boat owner should own a download repair manual for this reason. And at some point, every outboard will experience some type of fault. Sometimes the malfunction will be obvious, but at other times it can be difficult to understand what is wrong with the outboard motor. Having a troubleshooting guide handy is a simple way to easily trace and fix the motor’s problem. It’s important to print out the troubleshooting guide and keep a copy on the boat at all times. No problem, download a repair manual now. A download repair manual is the same manual dealership mechanics use to fix the motor.http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16288b5a403baf---Cannon-easi-troll-downrigger-manual.pdf It covers complete part inspection, removal, disassembly, cleaning, assembly and installation procedures. It also covers detailed testing procedures when applicable. Pictures, diagrams and illustrations are included when necessary to aid the mechanic through the repair process. Reinstalling a wire or hose in the wrong spot can cause the motor to run terribly. This is another reason to always have a Mercury repair manual handy. Moreover, wiring diagrams are absolutely critical when performing electrical repairs, testing or when a wire color code chart is needed. You never know when or if you might need one. And you don’t want to be 50 miles from shore with a dead motor and not knowing what to do get it started again. Trust me, I been there before. It’s not a good experience. Is it in pdf format? There is a repair manual that covers the following models and years: I also have a 2003 50 hp mercury. Do you have manuals for these motors? It covers the following models: Do you have a service manual for the 1995 40hp mercury These models are covered: Covers every aspect of repair. It also covers a few other models in the same manual. Here’s a list of what’s covered. 1986-2003 Mercury outboard 6 thru 15 horsepower models: Does a repair manual cover this? Does a manual detail testing procedures. I have a 1994 model. Going to assume you have a 115 or 125 hp. But yes, the book details how to check for voltage issues, just see the download link. It covers the following models: Couldn’t find a manual for my motor. Can you help ?? Can you please help !!! Do you have one? Is there a service manual availabe for this beast? Can you help me? Do you have anything that will help me? Regards Lindsay Irwin Detlefsen says: Hi im seaching for a manual for the 50 hp any help. Dan Barnes says: I have a 1975 mercury 9.9. It runs good at home in. Lindsay Carson says: Hi. Do you have a manual for a 1995 Mercury 15 HP 2. Dave Dodge says: Get this and plug it into.https://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16288b5b93cf4a---cannon-coalridge-service-manual.pdf However, you should always refer to the factory repair manual for accurate servicing instructions. As an Amazon Associate I earn from qualifying purchases. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with Mcm 170 Engine Manual. To get started finding Mcm 170 Engine Manual, you are right to find our website which has a comprehensive collection of manuals listed. Scope. Supple?Part Number. Latest. Description. SN RangeYearsAllAllAllSterndrives: MC 120 to 260 AllSterndrives: TR and TRS. AllSterndrives: R, MR, Alpha. AllEngines: GM V6. AllEngines: MM 4?Cylinder. AllEngines: GM V8. AllEngines: GM 4?Cylinder. AllSterndrives: Bravo. AllAllEngines: GM 4?Cylinder. AllSterndrives: Alpha One Gen. All except High. PerformanceAll. Engines: GM V8 5.0L. Related. Diagram SetEngines: GM V6 Gen II. Balance Shaft. AllEngines: V8 7.3L (IDI) Diesel AllSterndrives: BlackhawkStarting SNEngines: D4.2L 300 Diesel. AllScope. Part Number. SN RangeYears. Diagram Set. Engines: GM V8 Gen VISterndrive 454 MagHorizon. Inboard 8.2L MPI. Engines: GM V8 L?29. Sterndrive 7.4L MPI. Inboard 7.4L MPIJul 2000. Sterndrive 5.0LEngines: GM 4?Cylinder. Sterndrive 3.0L AlphaEngines: V8 D7.3L D?Tronic. Sterndrives:Mar 2008. Bravo One, Two, Three. Sport Master. Engines: Sterndrive D1.7L. DTI In?Line Diesel. Engines: 8.1L (496cid)Sterndrive 5.0L. Sterndrive 5.0L MPI. Sterndrive 5.7L. Sterndrive 350 MagSports. Black Scorpion. Inboard 5.7L. Inboard 350 Mag MPI. Inboard MX 6.2 MPIEngines: Sterndrive 4.3LPCM 555 DiagnosticsAll DTS without. Emissions Control. Engines: D4.2L LD In?Line. Diesel. All. Precision Pilot. All MPI non?DTS. All MPI non?DTSControl. ECM 555 DiagnosticsScope. Dry Joint Exhaust SystemFeb 2005. Sterndrive. Jetdrive. Bravo SterndrivesBravo Standard, BravoTransom. Transom (High. Performance). Engines: Gen III Cool FuelSterndrive 496 MAG. Inboard 6.2L MPI. Inboard 8.1L (496cid)Jul 2008Engines: QSD 2.8L and 4.2L Diesel ModelsQSD 2.www.clinicaponce.com/galeria/files/98-mazda-protege-owners-manual.pdf8L SterndriveSterndrive. InboardScope. DescriptionShift (DTS): 10?Pin Engine. ConnectionUSA version. Connection. Version 06Remote ControlsVazer 100 Engine and Drive. Interim Service ManualMerCruiser Special ToolsCummins MerCruiser Diesel Special ToolsMerCruiser Diagram Binder See index, 90?869216002. All Mercury remoteEmissions ControlControlControl. Scorpion 350 with. Tow Sports 5.7 MPIInboard models with. June 2008Supple. To. Manual. Type. SN Range or Models. Years. AllEngines: Hi?PerformanceDec. 1990Service. Dec. 1991AllPart Number. AllDec. 1994. Mark IVMar. 1996. Sterndrives: VI and VII (Non. Dry Sump). AllOct. 1998. Sterndrives: VI (Dry Sump). AllOct. 2002. Engines: HP500 EFI. AllMar. 2000. Engines: HP377 EFI. AllJan. 2002Nov. 2002. Engines: HP575 SCiApr. 2003June 2003May 2007Feb. 2007June 2005July 2005HP850 SCi. HP1075 SCi. HP1200 SCiAll. Diagnostic. Feb. 2006. Service. Model year 2006?,Feb. 2006June 2006. Engines: HP600 SCi. Engines HP525 EFI. Engines. HP600 SCi. HP700 SCiAug.2006. Sterndrives: Dry Sump NXT?Dec. 2006. Remote Controls. Mercury remote controlsTools. Apr. 2008. Special tools for Mercury. Mercury Racing Special Tools. Racing Outboard and. Catalog. Sterndrive ProductsW6250 Pioneer Road. Fond du Lac, WI 54936-1939. Mercury, Mercury Marine, MerCruiser, Mercury MerCruiser, Mercury Racing, MotorGuide, Mercury. OptiMax, Sport-Jet, K-Planes, MerCathode, SmartCraft, Zero Effort, M with Waves logo, Mercury with. Waves logo, and SmartCraft logo are all registered trademarks of Brunswick Corporation. Mercury Product. Protection logo is a registered service mark of Brunswick Corporation.Sterndrive Units. Alpha One SS. Printed in U.S.A.Transom Assemblies. Model. Serial NumberSterndrive UnitsRatio If Serviced With 13:21 Gears. Serial NumberRatio If Serviced With 13:28 Gears. Serial NumberRatio If Serviced WithR.H. Serial Number. L.H. Serial NumberAlpha One SSOriginal Ratio. Ratio If Serviced With 13:21 Gears. Serial NumberMerCruiser models as shown in the cross-reference chart below. Sea Ray. MerCruiserNotice To Users of This Manual. Throughout this publication, “Warnings” and “Cautions” (accompanied by the International HAZARDThese “Safety Alerts” alone cannot eliminate theStrict compliance to theseThis service manual has been written and publishedIt is assumed that these personnel are familiar withWe could not possibly know of and advise the serviceWe have notCOULD result in severe personal injury or death. All information, illustrations, and specifications contained in this manual are based on the latest productAs required, revisions to this manual will be sent toIMPORTANT: Indicates information or instructions that are necessary for proper operationCoast Guard Rules and Regulations to minimizeUse of replacement electrical system components, which do not comply to these rules andWhen servicing electrical systems, it is extremelyFailure to comply could resultSection 1 - Important Information. A - Important Information. B - Maintenance. C - Troubleshooting. Section 2 - Removal, Installation and Adjustments. A - All Models. Section 3 - Sterndrive Unit. A - Drive Shaft Housing. C - Gear Housing - I-R. D - Gear Housing - Alpha One Counter Rotation. Section 4 - Transom Assembly. A - Service Procedures Requiring Minor. Disassembly. B - Service Procedures Requiring Major. Section 5 - Power Trim. A - Oildyne Power Trim Pump (Plastic Reservoir). B - Oildyne Power Trim Pump (Aluminum Reservoir). C - Prestolite Power Trim Pump. D - Trim Cylinders. E - Dual Power Trim Control. F - Auto Trim II. Section 6 - Steering Systems. A - Power Steering. B - Manual Steering. Section 7 - Corrosion Protection. A - All ModelsImportant. Information. Removal, InstallationSterndrive Unit. Transom Assembly. Power Trim. Steering Systems. Corrosion ProtectionPage. How To Use This Manual.................. 1A-1. Page Numbering...................... 1A-1. Special Product Information............... 1A-1. Directional References.................... 1A-1. Propeller Rotation........................ 1A-1. Serial Number Locations.................. 1A-2. Hi-Performance Boating................... 1A-2. Sterndrive Unit 10-Hour Break-In Period.... 1A-2. Decal Application......................... 1A-2. Decal Removal........................ 1A-2. Temperature........................ 1A-2. Surface Preparation................. 1A-2. Decal Application...................... 1A-2. Painting Procedures...................... 1A-3. Propellers.......................... 1A-3. Gear Housings..................... 1A-3. IndexDirectional References. This Manual is divided into sections which representFront of boat is bow; rear is stern. Starboard side isIn this service manual,Some sections are further divided into parts whichSections and parts are listed on page. Page Numbering. Two number groups appear at the bottom of eachPropeller Rotation. Propeller rotation for sterndrive can be right hand orIntroduction. This comprehensive overhaul and repair manual isIt provides specificBefore attempting repairs, it is suggested that procedure first be read through to gain knowledge of theSpecial Product InformationDuring production of these models, special productIndexSterndrive Unit 10-Hour. Break-In Period (New or with. Replacement Gears)Decal ApplicationDecal RemovalWritten by marine engineers, order Part No.IMPORTANT: Do not use a soap or any petroleumDecal Application. NOTE: Ensure area where decal will be applied isIndexAvoid serious injury from airborne particles. Use eye andRegalite Polycut or coarse Scotch-Brite, disc orIndustries DX330 Wax and Grease Remover orPropeller Black.This procedure will provide theThe followingIt is recommended that the listed materials be purchasedThe minimum package quantity of each materialIMPORTANT: Do not use any type of aerosolCatalyze allUsing a sprayLet dry, flash off for five minutes and applyThis urethane paint will dry to the touch inIMPORTANT: Do not paint sacrificial trim tab orProcedure:IndexPage. Maintenance Schedules................... 1B-1. Maintenance Intervals.................. 1B-1. Scheduled Maintenance That Can Be. Performed by Dealer.................. 1B-2. Lubricating Shift Cable Pivot Points...... 1B-4. This paper describes with fascinating similarity one of the major hypotheses in MMT and chiropractic, namely that physical imbalances produce secondary muscle dysfunction, specifically a muscle inhibition (usually followed by overfacilitation of an opposing muscle). These studies do not always clarify whether a muscle weakness or imbalance is primary or secondary to low-back pain.To test the construct validity of these original hypotheses, researchers have attempted to quantify the muscle weakness that occurs with specific clinical conditions such as low back pain and soft tissue injuries. (See Table 2 ) The Convergent and Discriminant Validity of MMTDiscriminant validity exists when the test, as predicted, demonstrates a low correlation between two variables. These tests, when found to have the proper correlations, lend support to the construct validity of the method of testing. They examined the relationship between MMT findings in patients with and without upper limb complaints. The examiners were blinded as to patient-related information, and examined 14 muscles in terms of normal or reduced strength. The study also aimed to determine the sensitivity and specificity of the procedure. Of 67 subjects who reported low back pain, 58 (86.6) reported a positive test of both low back pain and ICV point test. Of 33 subjects, 32 (97) with no back pain positively reported no response to the ICV point test. Nine (9) subjects (13.4) reported false negative ICV tests and low back pain, and 1 subject (3) reported a false positive response for ICV test and no low back pain. Their results demonstrated that the low back pain group had significantly greater positive results (inhibited MMT) than those of the pain free group. Assuming this study is sound it may demonstrate the convergent validity of the method of MMT in relationship to patients with low back pain. The discriminant validity of MMT was shown in this study by its ability to find a low number of positive test results in the pain free groups. However, before accepting these results it would be important for them to be reproduced in another study. Studies like the ones described above and later in this review (that examine whether MMT can discriminate between abnormal and normal spinal function and pain states) contribute to the evidence available to clinicians supporting the validity of MMT. Concurrent Validity of MMTThe concurrent validity of a test refers to a test's ability to produce similar results when compared to a similar test that has established validity. Many studies have compared the findings of MMT with dynamometer tests favorably. (See Table 3 ) Table 3Scores measured with the dynamometers were consistent with the examiner's perception of muscle weakness (P less than 0.001) in both studies. There is increasing demand for objectivity in regard to muscle testing measurements. Electromyograms are expensive machines, and setting patients up on the machines in the clinical setting is time-consuming. A review of the literature on dynamometers reveals some of the problems associated with their use. These are important factors when considering the cost-effectiveness and clinical usefulness of these other testing procedures for muscle strength assessment. Predictive Validity and Accuracy of the MMTComparing a test to supporting evidence that is obtained at a later date assesses predictive validity. The accuracy of a diagnostic test is usually determined by examining the ability of the test to assist clinicians in making a correct diagnosis. A good diagnostic test minimizes the probability of the clinician finding a positive response in healthy people and negative test results in people with dysfunction or pathology. A good diagnostic test therefore minimizes the probability of either a false positive or a false negative result.