GZ4500 848-C5A-93A3 (909) U S OWNER'S/OPERATOR'S MANUAL CHAINSAW GZ4500 WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. WARNING Before using our products, please read this manual carefully to understand the proper use of your unit.
GZ4500 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. ■ 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.
GZ4500 1. Parts location U S 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Front guard Starter knob Air cleaner cover Choke knob Throttle interlock Right handle Throttle lever Engine switch Fuel tank Oil tank Left handle Saw chain Guide Bar 2. Specifications ■ GZ4500 Power unit : Displacement ·············································································································· 2.69(44.
GZ4500 3. Warning labels on the machine (1) Read operator's instruction book before operating this machine. (2) Wear head, eye and ear protection. (3) Use the chain saw with two hands. (4) Warning! Danger of kickback. (5) Read, understand and follow all warnings. 4. Symbols on the machine For safe operation and maintenance, symbols are carved in relief on the machine. According to these indications, please be careful not to make any mistake.
GZ4500 5. For safe operation 1. Never operate a chain saw when you are fatigued, ill, or upset, or under the influence of medication that may make you drowsy, or if you are under the influence of alcohol or drugs. 2. Use safety footwear, snug fitting clothing and eye, hearing and head protection devices. Use the vibration-proof glove. 3. Keep the saw chain sharp and the saw, including the AV system, well maintained.
GZ4500 5. For safe operation 22. Do not operate the chain saw in a tree unless specially trained to do so. 23. Guard against kickback. Kickback is the upward motion of the guide bar which occurs when the saw chain at the nose of the guide bar contacts an object. Kickback can lead to dangerous loss of control of the chain saw. 24. When transporting your chain saw, make sure the appropriate guide bar scabbard is in place.
GZ4500 6. Installing guide bar and saw chain F1 ■ A standard saw unit package contains the items as illustrated. (F1) (1) Power unit (2) Guide bar (3) Saw chain (4) Plug wrench (5) Screwdriver for carburetor adjustment (4) Tensioner screw (5) Lift up NOTE A new chain will expand its length in the beginning of use. Check and readjust the tension frequently as a loose chain can easily derail or cause rapid wear of itseif and the guide bar.
GZ4500 7. Fuel and Chain Oil ■ FUEL lines or fuel tank of the engine. WARNING • Gasoline is very flammable. Avoid smoking or bringing any flame or sparks near fuel. Make sure to stop the engine and allow it cool before refueling the unit. Select outdoor bare ground for fueling and move at least 10 ft (3 m) away from the fueling point before starting the engine.
GZ4500 7. Fuel and Chain Oil test standard has been discontinued by API in 1995 and it no longer exists. IMPORTANT • Gasoline/Oil mixture Storage Recommendations Store your gasoline or gasoline/oil mixture in a cool dry area in a tightly sealed approved container to limit the entry of moisture and additional air (oxygen). Moisture and air cause the development of varnish and gum, making the fuel stale. Stored gasoline and gasoline/oil mixture ages and loses its octane rating and volatility.
GZ4500 8. Operation WARNING F11 It is very dangerous to run a chainsaw that mounts broken parts or lacks any parts. Before starting engine, make sure that all the parts including bar and chain are installed properly. F7 4. While holding the saw unit securely on the ground, pull the starter rope vigorously. (F11) WARNING Do not start the engine while the chain saw hangs in one hand. The saw chain may touch your body. This in very dangerous. ■ STARTING THE ENGINE 1.
GZ4500 8. Operation Before adjusting the carburetor, make sure that the provided air/fuel filters are clean and fresh and the fuel properly mixed. brake operation. Operating level varies by bar size. (F16) In case the brake is not effective, ask our dealer inspection and repairing. The engine, If being kept rotated at high speed with the brake engaged, heats the clutch, causing a trouble.
GZ4500 8. Operation F19 ■ HOW TO SWITCH BETWEEN OPERATING MODES (F19) 1. Flip the engine switch to turn off the engine. 2. Remove the cover to the air filter, remove the air filter, and then remove the choke knob from the cylinder cover. 3. Loosen the screws holding the cylinder cover in place (i.e., the three screws on the inside and the one screw on the outside of the cover), and then remove the cylinder cover. 4.
GZ4500 9. Sawing WARNING • Before proceeding to your job, read "For Safe Operation" section It is recommended to first practice sawing easy logs. This also helps you get accustomed to your unit. • Always follow the safety regulations. The chain saw must only be used for cutting wood. It is forbidden to cut other types of material. Vibrations and kickback vary with different materials and the requirements of the safety regulations would not be respected.
GZ4500 9. Sawing F25 Cutting Limb of Fallen Tree (F25) First check to which side the limb is bent. Then make the initial cut from the bent side and finish by sawing from the opposite side. WARNING Be alert to the springing back of a cut limb. F26 Pruning of Standing Tree (F26) Cut up from the bottom, finish down from the top. WARNING • Do not use an unstable foothold or ladder. • Do not overreach. • Do not cut above shoulder height. • Always use your both hands to grip the saw.
GZ4500 10. Maintenance Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine repair establishment or individual. 4. Others Check for fuel leakage and loose fastenings and damage to major parts, especially handle joints and guide bar mounting and muffler. If any defects are found, make sure to have them repaired before operating again. WARNING Before cleaning, inspecting or repairing your unit, make sure that engine has stopped and is cool.
GZ4500 10. Maintenance F34 2. Fuel filter (a) Using a wire hook, take out the filter from the filler port. (F34) (1) Fuel filter (b) Disassemble the filter and wash with gasoline, or replace with new one if needed. NOTE • After removing the filter, use a pinch to hold the end of the suction pipe. • When assembling the filter, take care not to allow filter fibers or dust inside the suction pipe. F35 4. Spark plug Clean the electrodes with a wire brush and reset the gap to .025in as necessary.
GZ4500 11. Maintenance of Saw Chain and Guide Bar ■ SAW CHAIN Make sure every cutter has the same length and edge angles as illustrated. (F39) F39 WARNING (1) Cutter length (2) Filing angle (3) Side plate angle (4) Top plate cutting angle It is very important for smooth and safe operation to keep the cutters always sharp. F37 U S Your cutters need to be sharpened when: • Sawdust becomes powder-like. • You need extra force to saw in. • The cut way does not go straight. • Vibration increases.
GZ4500 12. Storage • Aged fuel is one of major causes of engine starting failure. Before storing the unit, empty the fuel tank and run the engine until it uses all the fuel left in the fuel line and the carburetor. Store the unit indoor taking necessary measures for rust prevention. 13. Disposal • When disposing your machine, fuel or oil for the machine, be sure to allow your local regulations. 14. Troubleshooting guide Case 1. Starting failure Case 3.
GZ4500 FEDERAL AND CALIFORNIA EMISSIONS CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS U S The EPA (U.S. Environmental Protection Agency), CARB (California Air Resources Board), Environment Canada and RedMax are pleased to explain the emissions control system's warranty on your 2009 and later small off-road engine. In U.S.
GZ4500 warranty is warranted for the remaining warranty period. Any warranted part that is scheduled only for regular inspection in the maintenance schedule will be warranted for a period of two years. A statement in such written instructions to the effect of "repair or replace as necessary" will not reduce the period of warranty coverage. Any such part repaired or replaced under warranty will be warranted for the remaining warranty period.
