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Instruction Manual
Important:
Read this instruction manual carefully before putting the Fast-Cut into operation and strictly observe the safety regulations!
Improper use can cause serious injury! Keep this instruction manual!
WARNING!
FUELS WITH MORE THAN 10% ETHANOL ARE NOT APPROVED FOR USE IN DIAMOND PRODUcTS
2-STROKE ENGINES!
Use of alternative fuels, such as E-20 (20% ethanol), E-85 (85% ethanol) or any fuels not meeting Diamond Products
requirements are not approved for use in Diamond Products 2-stroke gasoline engines!
USE OF ALTERNATIVE FUELS cAN cAUSE THE FOLLOWING PROBLEMS:
Poor engine performance, loss of power, overheating, fuel vapor lock, improper clutch engagement, premature
deterioration of fuel lines, premature deterioration of gaskets, premature deterioration of carburetors.
USING ALTERNATIVE FUELS AND/OR 2-STROKE OILS NOT AccORDING TO JASO Fc OR ISO-L-EGD IN
DIAMOND PRODUcTS 2-STROKE ENGINES WILL VOID YOUR ENGINE WARRANTY!
Model Fc7312
Model Fc7314
Model Sc-8116XL
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Summary of Contents for Diamond Products Fast-Cut FC7312
- Page 1 FUELS WITH MORE THAN 10% ETHANOL ARE NOT APPROVED FOR USE IN DIAMOND PRODUcTS 2-STROKE ENGINES! Use of alternative fuels, such as E-20 (20% ethanol), E-85 (85% ethanol) or any fuels not meeting Diamond Products requirements are not approved for use in Diamond Products 2-stroke gasoline engines!
- Page 2 As the engine owner, you should however be aware that Diamond Products may deny warranty coverage if your engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
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Page 3: Table Of Contents
US 08510690, SE 95027298, SE 95027306, IT 95000653, Denomination of components ......... 13 IT 95000654, GBM 9412558, GBM 9412559. We want you to be satisfied with your Diamond Products prod- PUTTING INTO OPERATION uct. Mounting the cutting disc ..........14 In order to guarantee the optimal function and performance of your Tightening the V-belt / Checking V-belt tension .... -
Page 4: Delivery Inventory
Delivery inventory 1. Fast-cut 2. Adapter ring 0.8"/1.0" (not in the general scope of delivery. Country‑specific) 3. Screwdriver (for carburetor adjustment) 4. Offset screwdriver 5. Universal wrench 13/19 In case one of the parts listed should not be included in the 7. -
Page 5: Safety Precautions Intended Use
SAFETY PREcAUTIONS Intended use Fast-cut protective goggles (C) or visor when using the Fast-Cut. Use the Fast-Cut cutoff saw outdoors only, for trimming and cutting suitable materials, using cutting discs rated for this machine. To prevent hearing damage, always wear suitable personal hearing protection. -
Page 6: Fuels / Refuelling
Always wear safety shoes or boots (G) with steel toes, non‑skid soles, and leg protectors when working with the Fast-Cut. Safety shoes equipped with a protective layer provide protection against cuts and ensure a secure footing. Always wear a work suit (H) of tough material with sufficient flame‑retardant qualities whenever working with the cutoff saw. -
Page 7: Cutting Discs
Never cut any type of wood. Reactive forces can cause severe personal injury from blade contact or thrown tips. NOTE: When using diamond cutoff discs, always make sure to observe the "direction of rotation" markings. Diamond discs should only be used for cutting masonry/brick/ concrete etc. -
Page 8: Kickback And Lock-In
Kickback and lock-in When working with the Fast-Cut there is a danger of kickback and lock-in. Kickback occurs when the top of the cutting disc is used for cutting (15). This causes the Fast-Cut to be thrown back toward the user with great force and out of control. -
Page 9: Synthetic Resin Cutting Discs
When using synthetic resin cutting discs, always ob- cutting masonry and concrete serve the following: IMPORTANT! Always wear approved respiratory protection! cAUTION: Asbestos and other materials that can release toxic sub- Synthetic resin cutting discs can absorb moisture. This stances may be cut only after notifying the proper authorities moisture can cause the disc to become unbalanced at high and under their supervision or that of a person appointed speed. -
Page 10: Transport And Storage
In wet cutting, the disc is wetted at an equal rate on both sides by a trickle of water. DIAMOND offers the right accessories for all wet cutting applications. Remove foreign objects such as sand, stones and nails found within the working area. caution: Watch out for electric wires... -
Page 11: Maintenance
Perform only the maintenance and repair works described in the instruction manual. All other work must be carried out by Diamond Products Service. Use only original Diamond Products spares and accesso- ries. The use of non-Diamond Products spares, accessories, or cutting discs increases the risk of accident. -
Page 12: Technical Data
Technical data Fc7312 Fc7314 Displacement cu in (cm 4.5 (73) 4.5 (73) Bore in (mm) 1.97 (50) 1.97 (50) Stroke in (mm) 1.46 (37) 1.46 (37) Max. power hp (kW) 5.1 (3.8) 5.1 (3.8) Max. torque Idling speed 1/min 2,500... -
Page 13: Denomination Of Components
Denomination of components (Illustration shows model FC7314) 15 16 Handle Decompression valve Filter cover for air filter and spark plug cap Starter grip Cover lock Air intake Tubular handle Combination switch „Choke, Start/Stop (I/O)” Muffler Safety locking button Protection hood Throttle lever Grip Tank cap (fuel) -
Page 14: Putting Into Operation
PUTTING INTO OPERATION cAUTION: Always turn off the engine and pull off the spark plug cap before doing any work on the Fast-cut! Always wear pro- tective gloves! cAUTION: Start the Fast-cut only after complete assembly and in- spection. For the the following work, use the assembly tools included with delivery: 1. -
Page 15: Tightening The V-Belt / Checking V-Belt Tension
Tightening the V-belt / checking V-belt tension IMPORTANT Exact V-belt tension is essential for maximum cutting per- formance with minimum fuel consumption. Improper V-belt tension will result in premature wear to the V-belt and V-belt wheel or damage to the clutch bearing. If the Fast-cut is new or the V-belt has been replaced, re- tighten the V-belt after the first hour of operation! NOTE: The two fastening nuts (11) must be loosened before... -
Page 16: Fuels / Refuelling
24 25 Fuels caution: This tool uses petroleum products (gasoline and oil). Be especially careful when handling gasoline. Do not smoke. Do not allow gasoline to come near flames, sparks or fire (explosion hazard). Gasoline 50:1 Fuel mixture This tool is powered by a high-performance air-cooled two-stroke engine. - Page 17 AVOID SKIN AND EYE cONTAcT NOTE: For preparing the fuel‑oil mixture first mix the entire oil quantity with half of the fuel required, then add the remaining Mineral oil products degrease your skin. If your skin comes in fuel. Shake the finished mixture thoroughly before pouring it contact with these substances repeatedly and for an extended into the tank.
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Page 18: Starting The Engine
Starting the engine necessary This model is fitted with a semiautomatic decompression valve (1) to make starting easier. Press the rubber cover until you can feel it engage. This pushes in the deompression valve behind it. This in turn reduces the compression, so that it takes less force to pull the starter cord to accelerate the engine to its starting speed. -
Page 19: Cold-Starting
cold starting: Grasp front handle firmly with one hand and press the Fast‑Cut against the ground. Place left toe in the rear handguard. Push the combination switch (6) up (choke position). This will automatically activate the half-throttle lock. NOTE: If the Fast-Cut is mounted on the trolley, do not operate the gas lever (throttle) on the side of the trolley! Pull the starter cable out slowly until you feel resistance (piston is now just before top dead center). -
Page 20: Adjusting The Carburetor
2500 rpm, but the running-in process of a new engine may require slight readjustment of the idling speed. Adjustments to the adjusting screws (L) and (H) may only be made by an authorised Diamond Products service center. Accordingly, the holes for the two screws are sealed shut. -
Page 21: Maintenance
Unscrew the screws (8) and remove the crankcase housing cover (9). Remove the old belt (10) or belt pieces. NOTE: The illustration shows the V-belt for models FC7312 and FC7314). Clean out the inside of the drive arm with a brush. -
Page 22: Cleaning The Protection Hood
cleaning the protection hood Over time, the inside of the protective hood can become caked with material residue (especially from wet cutting), which if allowed to accumulate can hinder the free rotation of the cut- ting disc. For this reason the hood must be cleaned out from time to time. - Page 23 Pre-filter (dry foam) Pre-filter (foam with air‑filter oil) Only for models Fc7312, 7314 Only for models Sc-8116XL clean or replace (when cutting with high dust amounts): If the pre‑filter (1) is dirty, wash it out in lukewarm water with standard dishwashing liquid or filter cleaner (Order No.
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Page 24: Cleaning / Changing The Air Filter
Replacing the spark plug cAUTION: Do not touch the spark plug or plug cap if the engine is running (high voltage). Switch off the engine before starting any maintenance work. A hot engine can cause burns. Wear protective gloves! The spark plug (Order No. 965 603 021) must be replaced in case of damage to the insulator, electrode erosion (burn) or if the electrodes are very dirty or oily. -
Page 25: Replacing The Starter Cable
Replacing the starter cable Remove four screws (14). Remove starter housing (15). Insert a small screwdriver through the cooling slits on the back of the starter housing. Push aside the tabs (16) slightly and carefully remove the air guide (17) from the starter housing Proceed in the order (A - B - c - D). -
Page 26: Replacing The Return Spring
Replacing the return spring Remove the starter housing (see “Replacing the starter cable”). Take the air guide off the starter housing (see “Replacing the starter cable”). De-tension the return spring on the cable drum (see “Replacing the starter cable”). Take off circlip (1) (circlip pliers, see “Accessories”). Remove the cable pulley (2). -
Page 27: Cutting Attachment In Central / Side Position
(7). Unscrew the grip (10) and turn the protective hood (11) as shown in the illustration. Disengage the V-belt (12) and remove the cutting attach- ment. NOTE: The illustration shows the V-belt for models FC7312 and FC7314). -
Page 28: Replacing/Cleaning The Spark Arrester Screen
Press the cutting attachment (13) onto the drive arm in the side position. Guide the V‑belt (14) over the V-belt pulley (15). NOTE: The illustration shows the V-belt for models FC7312 and FC7314). Put the guard plate (16) on. Screw on nuts (17) and tighten by hand. -
Page 29: Service, Spare Parts And Guarantee
Please bear in mind that if parts other than original Diamond Products spare parts are used, this will automatically invalidate the Diamond Products product guarantee. -
Page 30: Instructions For Periodic Maintenance
• Work on the Fast-Cut by unskilled persons or inappropriate repairs. • Use of unsuitable spare parts or parts which are not original Diamond Products parts, insofar as they have caused the damage. • Use of unsuitable or old oil. - Page 31 Notes...
- Page 32 State of california Special Warning: Warning: This product contains a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm. WARNING! Some dust created by power sanding sawing, grind- ing, drilling, and other construction activities contains chemicals known (to the State of California) to cause cancer, birth defects or other reproductive harm.
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