User manual MAGNA-MATIC MAG-1000

[. . . ] For more complete information on how to service a lawn mower blade refer to the publication "Magna-Matic Guide to Proper Lawn mower Blade Service. " 1 Unpack the Balancer Be sure all items listed here were included with your balancer. 1 - Blade Balancer 2 - Instruction Booklet (this booklet) 2 2 Mounting the Balancer You can mount the balancer on a wall, the MAG-10200 Service Center Stand (with your Magna-Matic Lawn mower Blade Sharpener), or the MAG-103 Balancer Test Stand/Mounting Bracket. (see these various ways below) Mounting Conditions: A - Wall must be vertical ± 5º B - Make sure there is enough clearance around the balancer to allow the blade to freely rotate without interference. C - Balancer mounting location should not be subjected to air ow (fans, wind, etc. ). [. . . ] Use a hand wire brush or the MAG-12000 lawn mower blade cleaning machine to clean a lawn mower blade. 2- Hold the blade with two hands, and locate the center hole of the lawn mower blade on the cone. Now with your index ngers, pull the sliding magnetic chuck towards the blade. The result should be that the blade is now securely located on the cone, and held there by the magnet. SEE BELOW the overhead view of the balancer and blade 3 - Slowly remove your hands and check that the blade is held rmly before completely removing your hands. 1 3 NOTE: Always wear protective gloves when handling lawn mower blades - gloves were not worn in photos to show maximum detail of hand positions. 2 4 5 6 6 Check Blade Straightness This will guide you through the process to see if a blade has become bent from use damage. 1 - While the blade is mounted on the balancer. Turn the blade on the balancer so that it is vertical on the balancer (have one cutting edge pointing to the sky, and one to the ground. 2 - Now position the gauge rod to almost touch the backside of the blade SEE IMAGES TO THE RIGHT 3 - Rotate the blade to compare the distances of one end of the blade to the other. If they are the same - the blade is "at" or "straight. " 4 - See your blade manufactures tolerance requirements to determine if the blade should be discarded. NOTE about BLADE STRAIGHTNESS The longer the blade, the greater the deviation that can be allowed between the two blade ends. Conversely, the shorter the blade, the lesser the deviation that can be allowed between the two blade ends. WARNING Do Not attempt to straighten a hardened blade. You may create fractures not visible to the eye. REPLACE ALL BENT BLADES 7 6 Check Blade Straightness General Guide: 18" - 24" long blades can allow up to 3/8" deviation 24" - 28" long blades can allow up to 1/2" deviation 28" - and larger blade can allow up to 5/8" deviation WARNING Do Not attempt to straighten a hardened blade. You may create fractures not visible to the eye. REPLACE ALL BENT BLADES 8 7 Check Blade Balance This will guide you through the process to gauge a blade's out-of-balance condition. 1 - Have the blade mounted on the balancer. 2 - Rotate the blade to a horizontal attitude. Then remove your hands and allow the blade to freely rotate. 3 - If the blade remains HORIZONTAL the blade is "HORIZONTALLY IN-BALANCE. " 4 - If one end of the blade rotates to the 6 o'clock position of the clock face - THIS IS THE HEAVY END. Material will need to be removed from this end to bring the blade "IN-BALANCE. " Remove material from the cutting edge during sharpening - USE a MAGNA-MATIC [MAG-8000 or MAG-9000] to properly sharpen a lawn mower blade. NOTE: The blade will still be "IN-BALANCE-TOLARANCE" if it moves slightly from the horizontal position. ALL MAGNAMATIC Balancers are delicate instruments that are to be operated with manual force only. Do not misuse the balancer. 1 3 2 NOTE: Always wear protective gloves when handling lawn mower blades gloves were not worn in photos to show maximum detail of hand positions. 9 7 Check Blade Balance (cont) This will guide you through the process to gauge a blade's out-of-balance condition. RE-EXPLAINED - (clock face example) Think of a "scale, " "balance, " or "see-saw. " As with any of these, when there is an IMBALANCE of weight on one end it will rotate toward the ground, because of gravity. This is the same way MAGNA-MATIC Precision Static Balancers work. [. . . ] 3 - Rotate the mark to every position of the clock face (1 o'clock - 2 o'clock - etc. ) then let go of the balancer at every position very carefully - to see if it will rotate on its own. Your mark should not move at any position, this shows that the balancer itself is in balance. 4 - Be sure your hand or the mounted surface is not moving, the balancer will pick up the slightest vibration or motion. Air ow/wind will also affect this reading, be sure you are indoors and not near a fan or open window/door. [. . . ]