Crain 775 Use and Care Manual
Contents
1. This saw is not for use in general sawing Cutting loose plywood can bind the blade and cause kickback Use only Crain No 787 or No 789 blades see back Use new sharp blades at all times This saw plunge starts Plunge slowly before pushing forward GENERAL SAFETY WEAR SAFETY GEAR Always wear safety glasses and ear plugs when using this saw Use face or dust mask if cutting operation is dusty DANGEROUS ENVIRONMENTS Keep work area clean clutter invites accidents Do not use on damp or wet floors This saw may throw sparks Do not use around flammable gasses Be sure lighting is good ACCIDENTAL STARTING To avoid accidental starting do not carry saw with fingers on switch Do not carry the saw while it is plugged in CORD ABUSE AND EXTENSION CORDS Never carry saw by the cord or yank the cord to disconnect from an outlet Keep cords away from heat oil and sharp edges If the cord is cut or damaged replace immediately Avoid using long extension cords as they will cause some loss of power To keep the loss to a minimum and prevent saw from overheating use a heavy duty extension cord with a minimum wire size based on the length of cord that is needed 25 16 gauge wire 50 14 gauge wire DOUBLE INSULATED This saw is constructed with two separate layers of elec trical insulation A saw built with this insulation system does not need to be grounded As a result this saw comes with a two prong plug2. CAUTION THESE ARE THE HANDLES KEEP HANDS AWAY BLADE EXPOSED WHILE CUTTING THIS IS NOT A HANDLE KEEP HANDS AWAY FROM THE SPINDLE TUBE AND BLADE HOUSING RED AREA 2 a S M epy 1w KICKBACK REDUCING CLUTCH This saw has a kickback reducing clutch that helps reduce kickback forces If the saw is abused by making anything other than straight cuts curves angles etc OR by at tempting to cut backwards rather than forward the clutch may disengage A loud buzzing sound will occur Z Y ba WE a NS S Y 9 J BACKWARD pont cuT CURVES CUTTING BACKWARD OR CUTTING CURVES MAY CAUSE CLUTCH TO DISENGAGE If the clutch disengages immediately release the switch and allow the motor to stop Remove the saw from the cut and allow the blade guard to extend before restarting the motor and resuming the cut The saw s clutch can withstand about 500 disengage ments before the saw will no longer transmit sufficient power to the blade for cutting At such time factory service is required Don t waste the clutch OTHER KICKBACK PRECAUTIONS In the event of blade binding or any interruption of the cut release the switch Hold the saw motionless until the blade stops While the blade is still turning if you remove the saw from the cut or pull the saw backwards this can cause saw kickback Cut slowly especially when nails may be present Keep motor RPMs high at all times
3. BLADE CHANGE continued retighten the screw firmly before use Make sure spindle lock is pulled out before turning saw on OPERATING To avoid accidental starting DISCONNECT THE SAW FROM POWER SOURCE before inserting the cutting head into the toe space The safest way is by an fee eee eee ee gling it in Figure 1 Plug in the saw Grasp the handles firmly and pull the trigger Moving the saw slowly forward retracts the guards and exposes the blade Press down on the handles slowly to plunge the blade into the cut Slowly push the saw for ward and along the toe kick Figure 2 Do not force the saw let the blade cut at the highest RPM possible FIGURE 2 As you complete the cut release the trigger and make sure the motor comes to a full stop before removing the saw from the toe space Unplug the saw before remov ing from the toe space DIAMOND BLADE A diamond blade is available as an accessory It s used to saw out tile under toe spac es or on counters Also for K tile repair it can be used to remove field tiles Caution Do not overheat this blade Cut 6ft maximum and allow cooling Avoid cutting into wood subfloors as this gums up the diamond grit For best results lay down underlayment or plywood at least the width of the saw so that the diamond blade cuts only to a depth corre sponding to the thickness of tile Make sure no chicken wire or expanded metal has been installed under tiles to be
4. ack WARNING Don t adjust cutting depth by shimming up the saw by affixing shims to any of its parts or by manu ally holding the saw at an elevation off the floor BLADE CHANGE Unplug the saw Push and hold the spindle lock to stop blade rota tion While holding the spindle lock lever insert J the 3 6 hex wrench pro gt re y SPINDLE LOCK vided into the blade s Y socket set screw and turn it counter clockwise to loosen Note For extra leverage insert an extension tube onto the hex wrench Replace with new blade and UNPLUG SAW REMOVE ALLEN WRENCH BEFORE STARTING
5. action to a pinched bound or misaligned saw blade causing the saw to jump back ward towards the user PROPER E THE SIDE Saw kickback is preventable Cutting straight and forward helps prevent kickback This prevents the teeth at the back of the blade from grabbing in the top surface of the wood which causes the saw to jump backward Always prepare for saw kickback by keeping both hands on the handles and gripping firmly Kneel to the side of the saw keeping hands and knees out of the kickback arc LLLLLIL LOPEL PF LOLLLLOLOLEICoLIOo LP LILI POTENTIAL DIRECTION KICK BAJK ARC BODY POSITIONING DON T USE FROM A STANDING POSITION YY NZ This is a floor saw Don t try to use from a standing if position Brace yourself JA a wy by kneeling keeping body fi A PA i weight behind and to the side of the saw Keep a firm grip DON T USE OUTSIDE TOE SPACES When used with carbide tipped blades this tool is designed for use under toe spaces only Don t use this saw for cutting loose pieces of wood such as plywood ALLOW MOTOR TO STOP AT THE END OF THE CUT At the end of a cut allow the motor to fully stop before removing the saw from the cut or removing hands from the handles Otherwise if the saw blade is still spin ning the saw can catch and kick back toward the user HAND POSITIONING Keep hands away from the spindle tube and blade housing red area This is not a handle
6. cut MAINTENANCE If the saw is dropped the blade guard may be bent restricting the full return of the blade guard With the cord unplugged check operation of the blade guard before each use Dust build up can also restrict the full return of the blade guard Clear off all dust periodically REPLACEMENT PARTS 1795 S 1795 T o ee Va amp Pa A 1785 C w a qY 1795 P NNN fe 1785 E Mv 1775 10 Order No Description 1775 10 Blade Driver 1785 C Return Spring 1785 E Blade Guard Retainer Ring 1795 A 120V Power Unit 1795 G Carrying Case not shown 1795 J Brush Set not shown 1795 K Power Cord not shown 1795 L Switch not shown 1795 N3 Spindle w Gear not shown 1795 03 Armature w Fan not shown 1795 P Primary Guard 1795 R Secondary Guard Return Spring 1795 S Secondary Guard 1795 T Secondary Guard Washer 1795 U Secondary Guard Screw 1800 U Socket Set Screw 1800 V Allen Wrench DUST HAZARD WARNING Some dust created by power sanding sawing grinding drilling and other construction activities contains chemi cals known to the State of California to cause cancer birth defects or other reproductive harm Some examples of these chemicals are e Lead from lead based paints e Crystalline silica from brick cement and other masonry product and e Arsenic and chromium from chemically treated lumber Your risk from these exposures varies depending on how often you do this type of work To
7. reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as those dust masks that are specially designed to filter out microscopic particles Printed by HF SAW SPECIFICATIONS ELECTRICAL 120 VAC 11 AMPs 60 HZ Double Insulated 2 2 HP Motor No Load Speed 4500 RPM REP BLADE 787 Carbide 789 Diamond GROSS WT 11 8 LBS MIN MAX DIMS FOR TOE KICK TO BE CUT A MIN HEIGHT 3 1 MAX DEPTH 4 MAX FLOOR THICKNESS No 787 Blade GUARANTEE This Crain tool is guaranteed to be free of defects due to faulty materials or workmanship for a period of 90 days During this period any parts of tools found defective subject to the guarantee will be replaced at no charge Returns should be sent freight PREPAID in assembled condition and with a copy of the Bill of Sale proof of purchase to CRAIN CUTTER COMPANY 1155 Wrigley Way Milpitas CA 95035 New tools or loaners will not be given for those pending warranty repairs No claims shall exceed in amount the suggested sales price of the product No other guarantee oral or writ ten is expressed or implied DATE OF MFG CRAIN CUTTER CO INC 1155 WRIGLEY WAY MILPITAS CA 95035 5426 TEL 408 946 6100 FAX 408 946 4268 FORM F1775 Rev 05 1 1 INSTRUCTION MANUAL FOR O CITAN No 775 TOE KICK SAW PREVENTING amp PREPARING FOR KICKBACK Saw kickback is a sudden re
8. without a ground pole BLADE GUARD The blade guard attached to your saw is for your safety and protection If it becomes damaged do not operate your saw until it has been repaired Always leave blade guard in operating position when using the saw FEATURES OF THE SAW This saw is designed for removal of floors or underlay ment under toe spaces It cuts flush to the wall of the toe space Please note these features of the saw LOW PROFILE CUTTING HEAD Will fit under toe kicks as low as 3 in height SPINDLE LOCK For blade changes the spindle lock stops the blade rotation so that the blade can be easily removed This is NOT to be used as a motor brake CARBIDE BLADES amp DEPTH OF CUT The saw comes with a 3 s diameter carbide blade No 787 that cuts underlayment up to s thick It cuts to a fixed depth of 3 4 SWITCH FACTORY INSTALLED BLADE FILE CUT TING HEAD N S SA CARBIDE BLADE ANNS J TIPPED GUARD BLADE WARNING Regarding carbide blades use only Crain No 787 Carbide Tipped Blades The kickback reducing clutch is calibrated to this blade diameter ONLY WARNING Check the depth of the underlayment to be cut If it is less than 3 4 thick to prevent subfloor damage nail down a strip of additional underlayment at least the width of the saw to adjust the cutting depth Make sure the blade cuts through both underlayment thicknesses Cutting through a gap can cause binding and kickb
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