Assessments - 2, GPA: 4
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(1) Choke Lever (2) OPEN (3) CLOSE F21 (1) [130BT] F22 (1) [170BT/170BF] (2) (3) (4) F23 (1) [130BT/170BT] (5) F24 (1) (2) (3) [170BF] F25 (1) (2) (3) [130BT] F26 (1) (2) (3) [170BT/170BF] English Maintenance Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine repair establishment or individual. System/Compornent Procedure Daily or Before use Every 25hours after Every 50hours after Every 100hours after Air Filter Prefilter Inspect/Clean • Paper Filter (170 only) Inspect/Replace • Fuel Leaks Inspect/Replace • Fuel Filter Inspect/Replace • • Fuel Line Inspect/Clean • Spark Plug Inspect/Clean • Muffler Inspect/Clean • Bolts on muffler Tighten • Entire unit Inspect/Replace • Muffler Spark Arrester Inspect/Clean • Cooling System Inspect/Clean • Screws/Nuts/Bolts Tighten • Cylinder Exhaust Port Inspect/Clean • WARNING Make sure that the engine has stopped and is cool before performing any service to the blower. Contact with rotating blower fan or hot muffler may result in a personal injury. • AIR CLEANER • Check the air cleaner before use. A clogged air filter may increase fuel consumption while cutting down the engine power. • Never operate the blower without an air filter or with a deformed or broken filter element because unfiltered dusty air will quickly ruin the engine. [170BT/170BF] • Never clean the paper filter by tapping on it. Doing so may break the element, causing dust to get sucked into the blower and damaging the engine. CLEANING AIR FILTER: [130BT] (F27) 1. Unscrew the knob and remove the air cleaner cover. (1) Knob (2) Element (3) Screen 2. Wash the filter element in fresh, non flammable cleaning solution (ex. warm soapy water) and then dry. (Clean the air filter once in a week.) 3. Reinstall the filter. Never forget to attach the screen. If the screen is not attached, the cleaner will not seal properly and the dusts come into the cylinder. 4. Hook the slots of cover (4) on the tabs of body (5) and screw the knob. [170BT/170BF] (F28) 1. Unscrew 2 knob bolts and remove the air cleaner cover. Then remove the prefilter mounted inside the air cleaner cover. (1) Knob Bolt (2) Prefilter (3) Paper Filter 2. Wash the prefilter in fresh, non flammable cleaning solution (ex. warm soapy water) and then dry. (Clean the air filter once in a week.) 3. Exchange the paper filter element with new one in case it has been contaminated. WARNING (1) (3) (2) (4) (5) F27 [130BT] F28 [170BT] • This prefilter is dry type. • Never wash the prefilter in an oily cleaning solution. • Never include oil in the wash. • Do not clean the paper filter by tapping on it. English 18 .. FUEL FILTER • A clogged fuel filter may cause poor acceleration of the engine. Check periodically to see if the filter is clogged with dirt. The filter can be taken out of the fueling port using a small wire hook. Disconnect the filter assembly from the fuel pipe and unhook the retainer to disassemble it. Clean the components with gasoline. (1) Screen (2) Element (x 2) (3) Holder (4) Retainer .. SPARK PLUG • The spark plug may gather carbon deposits on its firing end with reasonable use. Remove and inspect the spark plug every 25 hours and clean the electrodes as necessary with a wire brush. The spark gap should be adjusted to .025 in (0.6 to 0.7mm). • Plug manufacturers recommend replacing the plug twice a year to avoid unexpected plug failure in a job. REPLACEMENT PLUG IS A NGK CMR7H. IMPORTANT • Note that using any spark plugs other than those designated may result in the engine failing to operate properly or in the engine becoming overheated and damaged. • To install the spark plug, first turn the plug with your hands until it is tight, then tighten it a quarter turn more with a socket wrench. .. MUFFLER WARNING • Periodically inspect the muffler for loose fasteners, damage or corrosion. If any sign of exhaust leakage is found, do not use the blower and have it repaired immediately. • Note that failing to do so may result in the engine catching on fire. 1. Remove the muffler, insert a screwdriver into the vent, and wipe away any carbon buildup. Wipe away any carbon buildup on the muffler exhaust vent and cylinder exhaust port at the same time. 2. Tighten all screws, bolts, and fittings. .. SPARK ARRESTER • The muffler is equipped with a spark arrester to prevent red hot carbon from flying out of the exhaust outlet. Periodically inspect and clean as necessary with a wire brush. (1) Bolt (2) Bolt (3) Spark Arrester (4) Diffuser WARNING • Before starting operation, always make sure to check if the muffler is properly held by the bolts (2). (Fastening Torque : 8 to 12 N·m) • Also make sure that the spark arrester and the diffuser are properly attached with the bolts (1). (Fastening Torque : 2 to 3 N·m) • Even if one of these bolts is loose, it may result in engine catching on fire. F29 F30 (2) (1) (2) (4) (3) (2) (4) (3) (1) F32 F31 [170BT/170BF] [130BT] Maintenance English 19 .. AIR INL...