848D3K93A0 (402) OWNER’S MANUAL HEDGE-TRIMMERS HTZ7500 CHTZ6000 CAUTION • Before using our products, please read this manual carefully to understand the proper use of your unit. • Keep this manual handy.
English SAFETY FIRST Instructions contained in warnings within this manual marked with a symbol concern critical points which must be taken into consideration to prevent possible serious bodily injury, and for this reason you are requested to read all such instructions carefully and follow them without fail. ■ NOTES ON TYPES OF WARNINGS IN THE MANUAL WARNING This mark indicates instructions which must be followed in order to prevent accidents which could lead to serious bodily injury or death.
English 1. PARTS LOCATION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.
English WARNING 1. CLEANER Please inspect the cleaner every day for dirt. Please clean out any dust that is found up to the element on the carburetor side. When rebuilding the cleaner, be sure to follow the following order: element → felt → element. If dust remains on the cleaner when it is used, the dust may enter the engine, cause abrasion in the pistons, and lead to engine damage. 2. GEAR CASE Please re-supply the gear case with grease every 25 hours.
English 3. SAFETY PRECAUTIONS ■ BEFORE USING THE MACHINE a. Read this owner's manual carefully to understand how to operate this unit properly. b. This product has been designed for use in trimming leaves and branches from trees and hedges, and it should never be used for any other purpose since doing so could result in unforeseen accidents and injuries occurring. c.
English 3. SAFETY PRECAUTIONS g. Lack of sleep, tiredness, or physical exhaustion results in lower attention spans, and this in turn leads to accidents and injury. Limit the amount of time over which the hedge-trimmer is to be used continuously to somewhere around 30~40 minutes per session, and take 10~20 minutes of rest between work sessions. Also try to keep the total amount of work performed in a single day under 2 hours or less. h.
English 3. SAFETY PRECAUTIONS ■ WARNING CONSIDERING HANDLING OF FUEL a. The engine of this product is designed to run on a mixed fuel which contains highly flammable gasoline. You should never store cans of fuel or refill the fuel tank in any place where there is a boiler, stove, wood fire, electrical sparks, welding sparks, or any other source of heat or fire which might ignite the fuel. b. Smoking while operating the hedge-trimmer or refilling its fuel tank is extremely dangerous.
English 3. SAFETY PRECAUTIONS c. d. e. f. g. persons, always check the presence and locations of others so as to maintain a distance each person sufficient to ensure safety. Make sure that there are no loose screws or bolts, fuel leaks, ruptures, dents, or any other problems which might interfere with safe operation. Be especially careful to check that there is nothing wrong with the blades or with the joints by which the blades are attached to the hedgetrimmer.
English 3. SAFETY PRECAUTIONS ■ KICKBACK SAFETY PRECAUTIONS • A dangerous reaction may occur when the spinning blade contacts a solid object in the critical area. It is called Kick back. As a result, the operator can lose control of the unit which can cause serious or fatal injury. Avoid kickback, observe the safety precautions below strictly. 1. Keep the cutting blades clear of fances, posts, wires, and rocks to prevent kickback and damage to the blades. 2.
English 3. SAFETY PRECAUTIONS d. If the grass gets caught in the blade during operation, or if you need to check the unit or refuel the tank, always be sure to turn off the engine. e. If the blade touches a hard object like a stone, immediately stop the engine and check if something is wrong with the blade. If so, replace the blade by new one. f. If someone calls out while working ,always be sure to turn off the engine before turning around. g.
English 3. SAFETY PRECAUTIONS d. When sharpening, removing, or reattaching the blade, be sure to wear thick, sturdy gloves and use only proper tools and equipment to prevent injury. e. When replacing blade or any other parts or when replacing the oil or any lubricants, always be sure to use only KOMATSU ZENOAH products or products which have been certified by KOMATSU ZENOAH for use with the hedgetrimmer.
English 4. FUEL WARNING • Gasoline is very flammable. Avoid smoking or bringing any flame or sparks near fuel. • Wipe up all spills before starting the engine. • Make sure to stop the engine and allow it cool before refueling the unit. • Keep open flames away from the area where fuel is handled or stored. IMPORTANT • Never use oil for 4 cycle engine use or water cooled 2-cycle engine. It can cause spark plug fouling, exhaust port blocking, or piston ring sticking.
English 5. OPERATION ■ STARTING THE ENGINE F1 WARNING Keep the blades clear of everything around It as they will start moving upon the engine starts. 1. Release the throttle lever and make sure it is fully back. (F1) 2. Set the engine switch to the “I (RUN)” position. (F1) 3. Push the primer pump until overflown fuel flows out in the clear tube. (F2) 4. Move the choke lever to the closed position.
English 5. OPERATION IMPORTANT ■ RUNNING IN THE ENGINE During the first 20 working hours, do not use the hedge-trimmer at maximum power for long periods. F5 ■ ADJUSTING IDLING SPEED • Before adjusting the carburetor, clean the air filter and warm up the engine. (F5) • Idle screw is adjusted in order to ensure a good safety margin between idle running and clutch engagement. (F6) F6 (1) Air filter (2) Idle screw WARNING (2) With the engine idling (3000 rpm), the blade should not rotate.
English 5. OPERATION F8 F9 16 • Use only as much throttle as is needed to do the job. Excessive engine speed is unnecessary. • Avoid cutting thick branches, for which will damage the blades and shorten the life of drive systems. • Tilting the trimmer 5 to 10° to the cutting object will make the job easy and bring a good result. • Always keep your body to the carburetor side of your trimmer, never on the muffler side.
English SHAFT ENGINE 6.
English 6. MAINTENANCE WARNING F10 Before cleaning, inspecting, or repairing the unit, make sure that the engine has stopped and is cool. ■ BLADE (F10) • Check the blade and the fasteners for looseness, cracking, or bending. • Check the cutting edges and reform with a flat file. F11 Point: 1. Keep the end corner sharp. 2. Round the root of the edge. 3. Do not use water when using a grinder.
English 6. MAINTENANCE 3. Check if the safety lock returns to its original position when you release your hand from safety lock. If you find any defects at the checks above, contact your nearest servicing dealer for repair. F13 ■ ANTI-VIBRATION SYSTEM (F13) WARNING The deformed or damaged antivibration system may cause of the breakages like getting rickety or falling off of engine and/or blade. • [HTZ7500] Check periodically if the rubber cushions are not deformed or damaged.
English 6. MAINTENANCE F15 F16 F17 ■ FUEL FILTER (F15) When the engine runs short of fuel supply, check the fuel strainer for blockage. ■ WAY OF THE COOLING AIR (F16) This engine is air-cooled. Dust clogging between the inlet port of the cooling air and cylinder fins will cause overheating of the engine. Periodically check and clean the cylinder fins after removing the air cleaner and the cylinder cover. ■ SPARK PLUG (F17) Starting failure and mis-firing are often caused by a fouled spark plug.
English 6. MAINTENANCE ■ MUFFLER F19 AFTER 100 HOURS OF USE 1. Remove the muffler, insert a screwdriver into the vent, and wipe away any carbon buildup. Wipe away any carbon buildup on the muffler exhaust vent at the same time. (F19) (1) screw driver (2) muffler 2. Tighten all screws, bolts, and fittings. 3. Check to see if any oil or grease has worked its way in between the clutch lining and drum, and if it has wipe it away using oil-free, lead-free gasoline.
English 7. SPECIFICATIONS Model name ................ HTZ7500 [CHTZ6000] Type ..............................Reciprocating single-sided [double-sided] dual blades Blade length .............................. 750 [600]mm Engine model ........................... Zenoah GZ23N Displacement ......................................... 23.6cc Carburetor .......................... Diaphragm type Ignition system ........................................... C.D.I Spark plug ......................... Champion RZ7C Fuel ..
Working for a better tomorrow Head Office: 1-9, Minamidai, Kawagoe-city, Saitama, 350-1192 Japan Telephone: (+81)49-243-1117 Telecopier: (+81)49-243-7197 PRINTED IN JAPAN
