G2500/G2500 OPS 115 59 93-38 (306) G B OWNER’S MANUAL CHAIN SAW G2500 G2500 OPS (One-Push-Start) Original Language GB-1 01-G2500･G2500 ops_GB_306＿四.indd 1 13.7.
G2500/G2500 OPS 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. Contents 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.
G2500/G2500 OPS 2. Specificaions Power unit: G2500/G2500 OPS Displacement (cm3):.............................................. 25.4 Fuel: . ................Mixture (Gasoline 50: Two-cycle oil 1) (when using ZENOAH genuine oil) Fuel tank capacity (cm3)......................................... 230 Chain oil: . ............................... Motor oil SAE# 10W-30 Oil tank capacity (cm3)........................................... 160 Carburetor: ........................................
G2500/G2500 OPS 4. For safe operation WARNING This chainsaw has been especially designed for tree maintenance and should therefore only be used by trained operators when working on trees. When using this product for the first time, before beginning actual work, learn to handling it from skilled worker. 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.
G2500/G2500 OPS 20. Operate the chain saw only in well ventilated areas. Never start or run the engine inside a closed room or building. Exhaust fumes contain dangerous carbon monoxide. 21. Do not operate the chain saw in a tree unless specially trained to do so. (3) 22. 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. (4) (5) 23.
G2500/G2500 OPS WORKING WITH TREE SERVICE CHAIN-SAWS FROM A ROPE AND HARNESS This chapter sets out working practices to reduce the risk of injury from tree service chainsaws when working at height from a rope and harness. While it may form the basis of guidance and training literature, it should not be regarded as a substitute for formal training. General requirements working at height Operators of tree service chainsaws working at height from a rope and harness should never work alone.
G2500/G2500 OPS Gaining a good footing at the working position can be assisted by use of a temporary foot stirrup created from an endless sling.
G2500/G2500 OPS 5. Explanation of Symbols on the Machine WARNING • 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. The port to refuel “MIX GASOLINE” Position: Fuel cap The port to top up chain oil Position: Oil cap Setting the switch to the “O” position, the engine stops immediately. Position: Front at the top of the rear handle Starting the engine.
G2500/G2500 OPS 6. Installing Guide Bar and Saw Chain A standard saw unit package contains the items as illustrated. Plug wrench (Hexagon socket (S13/S19) + Slotted driver) Power unit Bar protector Guide bar G B Saw chain Screwdriver for carburetor adjustment (Slotted driver) Open the box and install the guide bar and the saw chain on the power unit as follows: 5.
G2500/G2500 OPS 7. Fuel and Chain Oil ■ Fuel 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 3 m (10 ft) away from the fueling point before starting the engine. • The Zenoah engines are lubricated by oil specially formulated for air-cooled 2-cycle gasoline engine use.
G2500/G2500 OPS 8. Operating the Engine NOTE WARNING 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. ■ Starting THE engine 1. Fill fuel and chain oil tanks respectively, and tighten the caps securely. When restarting immediately after stopping the engine, set the Choke knob in the first-stage position (choke open and throttle lever in the starting position).
G2500/G2500 OPS 2. Put the machine body on the stable ground and make sure that there is no obstacle around the saw-crossing portion. Then, while holding the front handle with the left hand and putting the right foot on the frame portion, pull out the starter rope slowly. NOTE ■ For smoother use of one-push-start To use One-push-start more smoothly, it is important to perform warming-up longer than ever. 1.
G2500/G2500 OPS ■ Adjusting THE carburetor Idle adjusting screw H needle L needle The carburetor on your unit has been factory adjusted, but may require fine tuning due to a change in operating conditions. Before adjusting the carburetor, make sure that the provided air/fuel filters are clean and fresh and the fuel properly mixed. When adjusting, take the following steps: WARNING • When the brake operates, release the throttle lever to slow down the engine speed.
G2500/G2500 OPS 9. Sawing guard forward. The chain should stop immediately with the engine at full speed. If the chain is slow to stop or does not stop, replace the brake band and clutch drum before use. • It is extremely important that the chain brake be checked for proper operation before each use and that the chain be sharp in order to maintain the kickback safety level of this saw.
G2500/G2500 OPS A log lying on the ground 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 Saw down halfway, then roll the log over and cut from the opposite side. Be alert to the springing back of a cut limb. G B Pruning of Standing Tree A log hanging off the ground In area A, saw up from the bottom one-third and finish by sawing down from the top.
G2500/G2500 OPS 2. Fuel filter (a) Using a wire hook, take out the filter from the filler port. overheating of the engine. Periodically check and clean the cylinder fins in the repair specialty store. 7. Muffler WARNING Fuel filter (b) Wash the filter with gasoline. Replace with new one if clogged with dirt completely. WARNING When returning the filter, use a pinch not to be folded the suction pipe.
G2500/G2500 OPS 11. Maintenance of Saw Chain and Guide Bar ■ Saw Chain WARNING WARNING It is very important for smooth and safe operation to always keep the cutters sharp. The cutters need to be sharpened when: • Sawdust becomes powder-like. • You need extra force to saw in. • The cut path does not go straight. • Vibration increases. • Fuel consumption increases. Be sure to round off the front edge to reduce the chance of kickback or tie-strap breakage.
G2500/G2500 OPS 12. Troubleshooting Guide Case 1. Starting failure Case 2. Lack of power/Poor acceleration/ Rough idling WARNING • Make sure the icing prevention system is not working. Check fuel for water or substandard mixture. ➡ Replace with proper fuel. ➡ Remove and dry the spark plug. Then pull the starter again with no choke. ➡ Check for engine flooding. ➡ Check spark ignition. ➡ Replace with a new plug. Check fuel for water or substandard mixture. ➡ Replace with proper fuel. ➡ Clean.
G2500/G2500 OPS Limited warranty Should any failure occur on the product under normal operating conditions within the applicable warranty period, the failed part will be replaced or repaired free of charge by a ZENOAH authorized dealer. WARRANTY PERIOD: Six (6) months after purchased by end-user subject to 12 months from produced month. (30 days If used for rental purpose) THE PURCHASER SHALL BEAR COSTS OF TRANS PORTING THE UNIT TO AND FROM THE ZENOAH DEALER.
01-G2500･G2500 ops_GB_306＿四.indd 20 13.7.
