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Fotos y especificaciones Echo PB-250 |
Resumen del manual
Parts Required: None, if you are careful. IMPORTANT To maintain proper engine operating temperatures, cooling air must pass freely through the cylinder fin area. This flow of air carries combustion heat away from the engine. Overheating and engine seizure can occur when: • Air intakes are blocked, preventing cooling air from reaching the cylinder. • Dust and grass build up on the outside of the cylinder. This build up insulates the engine and prevents the heat from leaving. Removal of cooling passage blockages or cleaning of cooling fins is considered “Normal Maintenance”. Any failure attributed to lack of maintenance is not warranted. Cleaning Grill 1. Brush accumulated debris from crankcase intake grill above the fuel tank. 0.65 mm (0.026 in.) spark plug Level 2. Parts Required: REPOWERTM Tune-Up Kit IMPORTANT Use only NGK BPM-8Y spark plug (BPMR-8Y in Canada) otherwise severe engine damage may occur. 1. Remove spark plug and check for fouling, worn and rounded center electrode. 2. Clean the plug or replace with a new one. DO NOT sand blast to clean. Remaining sand will damage engine. 3. Adjust spark plug gap by bending outer electrode. 4. Tighten spark plug to 150-170 kgf • cm (130-150 in • lbf). 18 Cleaning Cylinder Fins 1. Remove spark plug lead from spark plug, and remove engine cover (6 screws). Clean cylinder fins to allow cooling air to pass freely. 2. Loosely reassemble engine cover with 6 screws. 3. Tighten all screws securely. 4. Attach spark plug lead. exhaust system Spark Arrestor Screen Level 2. Parts Required: Spark arrestor screen, Gasket IMPORTANT Carbon deposits in muffler will cause a drop in engine output and overheating. Spark arrestor screen must be checked periodically. 1. Remove spark plug lead from spark plug, and remove engine cover. 2. Remove spark arrestor cover (A), deflector (B), plate (C), gasket (D), and spark arrestor screen (E) from muffler. Replace screen if plugged with carbon deposits. NOTE When cleaning carbon deposit, be careful not to damage the catalytic element inside muffler. 3. Install spark arrestor screen, gasket, plate, deflector, and cover. 4. Loosely reassemble engine cover with 6 screws. 5. Tighten all screws securely. 6. Attach spark plug lead. A B D C E Exhaust Port Cleaning Level 2. Parts Required: As needed: Heat Shield 1. Remove spark plug lead from spark plug, and remove engine cover (6 screws). 2. Place piston at top dead center. Remove muffler (A) and heat shield (B). 3. Use a wood or plastic scraping tool to clean deposits from cylinder exhaust port. IMPORTANT Never use a metal tool to scrape carbon from the exhaust port. Do not scratch the cylinder or piston when cleaning the exhaust port. Do not allow carbon particles to enter the cylinder. 4. Inspect heat shield, and replace if damaged. 5. Install heat shield and muffler. 6. Tighten muffler mounting bolts (or nuts) to 60-70 in•lbf (70-80 kgf•cm). 7. Loosely reassemble engine cover with 6 screws. 8. Tighten all screws securely. 9. Attach spark plug lead. 10. Start engine, and warm to operating temperature. 11. Stop engine, and re-tighten mounting bolts (or nuts) to specifications. aB CarbureTor adjusTmenT Engine Break-In New engines must be operated a minimum duration of two tanks of fuel break-in before carburetor adjustments can be made. During the break- in period your engine performance will increase and exhaust emissions will stabilize. Idle speed can be adjusted as required. High Altitude Operation This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to 1,100 feet above sea level (ASL) (96.0 kPa). To maintain proper engine operation and emission compliance above 1,100 feet ASL the carburetor may need to be adjusted by an authorized ECHO service dealer. IMPORTANT If the engine is adjusted for operation above 1,100 feet ASL, the carburetor must be re-adjusted when operating the engine below 1,100 feet ASL, otherwise severe engine damage may result. Level 2. Parts required: None. NOTE Every unit is run at the factory and the carburetor is set in compli ance with emission regulations. Carburetor adjustments, other than idle speed, must be performed by an authorized ECHO dealer. Idle Adjustment Before adjustment make sure that: • Air filter is clean and properly installed. • Spark arrestor screen is free of carbon. • Blower pipes are installed. 1. Start engine, run at idle for one minute. 2. Complete warm up by running at full throttle for 5 minutes, operating choke twice to clear air from carburetor chambers. 3. Check idle speed and reset if necessary. If a tachometer is available, idle speed screw (A) should be set to the specificationsfound on "Specifications" Page of this manual. Turn idle screw (A) clockwise to increase idle speed; counter clockwise to decrease idle speed. a TroubleshooTIng TrOUBLESHOOTing CHarT Problem Check Status Cause remedy Engine cranks starts hard/ t'doesn start Fuel at carburetor No fuel at carburetor Fuel ...