Оценок - 3, средний балл: 4
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Фрагмент инструкции
1. Remove spark plug, and check for fouling, and worn or roundedcenter 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). 0.65 mm (0.026 in.) 18 coolIng system Level 2. Tools required: 25 - 50 mm (1 - 2 in.) cleaning brush, cross head screwdriver 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. Remove accumulated debris from intake grill between backpack frame and blower housing. Cleaning Cylinder Fins 1. Disconnect spark plug lead (A), and pull lead out of upper cover clamp and lower cover clamp. 2. Remove 5 screws and remove engine cover (B). 3. Clean cylinder fins (C) to allow cooling air to pass freely. A B C exhaust system Spark Arrestor Screen Level 2. Tools required: Cross head screwdriver, soft metal brush Parts Required: Spark arrestor screen, Gaskets (3) Power Blower oPerator's Manual 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 or muffler cover (5 screws). 2. Remove spark arrestor cover (A), gaskets (B) and spark arrestor screen (C) from muffler. 3. Clean carbon deposits from muffler components. NOTE When cleaning carbon deposits, be careful not to damage the cata lytic element inside muffler. B C A 4. Replace screen if it is cracked, plugged, or has holes burned through. 5. Install engine cover or muffler cover and attach spark plug lead. Exhaust Port Cleaning Level 2. Tools required: 4 & 5 mm Hexagon wrench, Cross head screwdriver, Wood or plastic scraper Parts Required: As needed: Heat Shield 1. Remove spark plug lead from spark plug, and remove engine or muffler cover (5 screws). 2. Place piston at top dead center. Remove muffler (A) gasket (B), and heat shield (C). 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 (C) and gasket (B) and replace if damaged. 5. Install heat shield (C), gasket (B), and muffler (A). 6. Tighten muffler mounting bolts (or nuts) to 110-130 in•lbf (130-150 kgf•cm). 7. Install engine cover. 8. Attach spark plug lead. 9. Start engine, and warm to operating temperature. 10. Stop engine, and re-tighten mounting bolts (or nuts) to specifications. A B C 20 carburetor adjustment Engine Break-In New engines must be operated for a minimum duration of two tanks of fuel 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. Tools required: Screwdriver, tachometer (Echo P/N 99051130017) Parts required: None. NOTE Do not adjust carburetor unless necessary. If you have difficulty, see your ECHO dealer. Adjustment Screws Idle Speed (A) Control throttle opening at idle. Low (LO) Speed (B) Controls amount of fuel at low speed and supplementary fuel for smooth progression from idle to high speed. High (HI) Speed (C) Controls amount of fuel at full throttle Before Adjustment Check that: • Air filter is clean and properly installed. • Spark arrestor screen and muffler are free of carbon. • Blower pipes are installed. A B C Power Blower oPerator's Manual Initial Adjustment 1. With engine off, turn HI speed screw (C) counterclockwise to stop. 2. Turn LO speed screw (B) midway between stops. 3. Turn idle screw (A) until tip of screw just touches throttle plate; then turn three (3) turns clockwise. Final Adjustment IMPORTANT Limiter caps...