Assessments - 3, GPA: 3.7
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• FUEL VAPORS ARE EXTREMELY FLAMMABLE AND MAY CAUSE FIRE AND/OR EXPLOSION. NEVER TEST FOR IGNITION SPARK BY GROUNDING SPARK PLUG NEAR CYLINDER PLUG HOLE, OTHERWISE SERIOUS PERSONAL INJURY MAY RESULT. 13 14 MAINTENANCE AIR FILTER • Clean before use. - Remove air cleaner cover and pull out air filter. - Lightly brush off dust or wash it in water and detergent. - Dry completely before putting it back in place. Fuel tank cap Fuel filter SPARK PLUG • Check periodically. - The standard spark gap is 0.6 to 0.7 mm (0.024 to 0.028 in). - Correct spark gap if it is wider or narrower than the standard gap. - If the electrodes are coated with carbon deposits replace with a new spark plug. Do not sandblast to clean. Remaining sand will damage engine. • Fastening torque = 15 to 17 N • m (130 to 145 in • lb). FUEL FILTER • Check periodically. - Do not allow dust to enter into fuel tank. - Clogged filter will cause difficulty in starting engine or poor engine performances. - Pick up fuel filter through fuel inlet port with a piece of steel wire or the like. - When filter is dirty, replace it. Air filter Air cleaner cover IMPORTANT Do not over tighten plug. CHECK FUEL SYSTEM • Check before every use. • After refueling, make sure fuel does not leak or exude from around fuel pipe, fuel grommet or fuel tank cap. • In case of fuel leakage or exudation there is a danger of fire. Stop using the machine immediately and request your dealer to inspect or replace. 0.6 - 0.7 mm (0.024 - 0.028 in) Spanner (19 mm) Spanner (19 mm) Idle speed adjustment screw Spanner (19 mm) Box spanner (10 mm) Hexagonal bar (Part Number 895412-20960) REPLACEMENT OF CHUCK Replacement of chuck should be done in the following manner: 1. Fit 19 mm spanner onto driving axle and keep it fitted. 2. Remove bolt with hexagonal hole fixed in the driving axle. 3. Insert accessory hexagonal bar (Part Number 895412-20960) into chuck and fix. 4. Fit 10 mm box spanner onto the hexagonal bar and turn it into direction as indicated by an arrow to remove chuck. 5. Fit a new chuck in the reversed order of removing. ADJUSTING CARBURETOR (As Required) GENERAL INFORMATION The idle speed adjuster screw controls the throttle opening at the idle position. IDLE ADJUSTMENT 1. Start engine and allow it to run at high idle until warm. 2. Turn the idle speed screw clockwise until drill bit begins to move. 3. Turn idle screw counterclockwise 1 and 1/2 to 2 turn or until the drill bit stops (2700 to 3300 r/min). NOTE When there is some trouble with the carburetor, contact your dealer. 15 CLEANING CYLINDER FINS (Check Periodically) Cylinder fins SilencerSilencer cover NOTE Clogged fins will cause poor engine cooling. 1. Carefully remove housing and clean dirt and dust from fins. 2. Reinstall housing. CLEANING SILENCER AND EXHAUST PORT (Check Periodically) 1. Carefully remove housing halves. 2. Remove and disassemble silencer. NOTE Be careful not to scratch the cylinder or piston when cleaning the cylinder exhaust port. A B 3. Clean deposits from cylinder exhaust port and silencer. Exhaust Port Cleaning Level 2. Tools required: 4 mm Hex Wrench, Wood or plastic scraper Parts Required:As needed: Heat Shield 1. Remove spark plug lead from spark plug, and remove engine cover (2 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. 16 6. Tighten muffler mounting bolts (or nuts) to 8095 in•lbf (90-110 kgf•cm). 7. Start engine, and warm to operating temperature. 8. Stop engine, and re-tighten mounting bolts (or nuts) to specifications. 9. Install engine cover and attach spark plug lead. STORAGE LONG TERM STORAGE (Over 30 Days) Do not store your unit for a prolonged period of time (30 days or longer) without performing protective storage maintenance which includes the following: 1. Store unit in a dry, dust free place, out of the reach of children and other unauthorized persons. 2. Place ignition switch in STOP position. 3. Remove accumulation of grease, oil, dirt and debris from exterior of unit. 4. Perform all periodic lubrication and services that are required. 5. Tighten all the screws, bolts and nuts. WARNING DO NOT STORE IN AN ENCLOSURE WHERE FUEL FUMES MAY ACCUMULATE OR REACH AN OPEN FLAME OR SPARK. 6. Drain the fuel tank completely and pull the recoil starter handle several times to remove fuel from the carburetor. 7. Remove the spark plug and pour 1/2 tablespoon (1/4 oz) of fresh, clean, 2-stroke engine oil into the cylinder through the spark plug hole. A. Place a clean cloth over the spark plug hole. B. Pull the recoil starter handle 2 or 3 times to distribute the oil inside the engine. C. Observe...