Instruction Manual

Transcript

02/2017 3” GASOLINE CHIPPER/SHREDDER MODEL: KCG-300CS INSTRUCTION MANUAL Read this manual. Do not attempt to operate the chipper/shredder until you have read and understood the safety, operation, and maintenance instructions in this manual. COPYRIGHT © 2016 ALL RIGHTS RESERVED BY KING CANADA TOOLS INC. wARRANTY & SERVICE INFORMATION 1-YEAR LIMITED wARRANTY FOR 3” GASOLINE CHIPPER/SHREDDER KING CANADA TOOLS OFFERS A 1-YEAR LIMITED wARRANTY FOR NON-COMMERCIAL USE. BEFORE CALLING THE ABOVE TOLL-FREE NUMBER, PLEASE READ THIS MANUAL, SPECIFICALLY THE SAFETY PRECAUTIONS, THE INSPECTION BEFORE OPERATION AND THE TROUBLESHOOTING GUIDE. • DO NOT RETURN THE DEFECTIVE PRODUCT TO THE RETAILER. wARRANTY INFORMATION PROOF OF PURCHASE Please keep your dated proof of purchase for warranty and servicing purposes. REPLACEMENT PARTS Replacement parts for this log splitter are available through our authorized KING CANADA generator service centers across canada. For servicing, call the above toll free number to get servicing instructions and be sure to have your proof of purchase if you are claiming warranty work. LIMITED TOOL wARRANTY KING CANADA makes every effort to ensure that this product meets high quality and durability standards. KING CANADA warrants to the original retail consumer a 1-year limited warranty as of the date the product was purchased at retail and that each product is free from defects in materials. THIS wARRANTY IS NOT TRANSFERABLE AND DOES NOT COVER • Damage or liability caused by shipping, improper handling, improper installation, improper maintenance, improper modification, or the use of accessories and/or attachments not specifically recommended. • Repairs necessary because of operator abuse or negligence, or the failure to install, operate, maintain, and store the product according to the instructions in the owner’s manual. • Damage caused by cold, heat, rain, excessive humidity, corrosive environments and materials, or other contaminants. • Expendable items that become worn during normal use such as fuel filters, air cleaners, spark plugs, engine oil. • Cosmetic defects that do not interfere with product functionality. • Freight costs from customer to an authorized warranty service location. • Repair and transportation costs of products or parts determined not to be defective. • ANY INCIDENTAL, INDIRECT OR CONSEQUENTIAL LOSS, DAMAGE, OR EXPENSE THAT MAY RESULT FROM ANY DEFECT, FAILURE OR MALFUNCTION OF THE PRODUCT. • RETAIN THE ORIGINAL CASH REGISTER SALES RECEIPT AS PROOF OF PURCHASE FOR wARRANTY wORK. KING CANADA shall in no event be liable for death, injuries to persons or property or for incidental, special or consequential damages arising from the use of our products. Shipping and handling charges may apply. If a defect is found, KING CANADA will either repair or replace the product. PARTS DIAGRAM & PARTS LISTS Refer to the Parts section of the King Canada web site for the most updated parts diagram and parts list. KING CANADA TOOLS INC. DORVAL, qUEBEC, CANADA H9P 2Y4 BASIC & SPECIFIC SAFETY PRECAUTIONS FOR GAS ENGINES BASIC SAFETY INFORMATION ExHAUST FUMES ARE DANGEROUS •Never operate the engine in a closed area or it may cause unconsciensness and death within a short time. Operate in a well ventilated area. FUEL IS HIGHLY FLAMMABLE AND POISONOUS •Always turn off the engine when refueling. •Never refuel while smoking or in the vicinity of an open flame. •When operating or transporting engine and log splitter, be sure to keep it upright. If it tilts, fuel may leak from the carburetor or fuel tank. ENGINE AND MUFFLER MAY BE HOT •Place the engine/log splitter in an appropriate location, away from children and pedestrians. •Avoid placing any flammable materials near the exhaust outlet during operation. •Keep a 4ft. clearance from buildings or other equipment around the engine/log splitter to prevent overheating. INADEqUATE VENTILATION Materials placed against or near the engine or operating in areas where the temperature exceeds 40° C ambient (such as storage rooms or garages) can interfere with its proper ventilation features causing overheating and possible ignition of the materials or buildings. Operate engine in a clean, dry, well ventilated area a minimum of four feet from any building, object or wall. DO NOT OPERATE UNIT INDOORS OR IN ANY CONFINED AREA. RISK OF BREATHING - INHALATION HAZARD Operate engine in clean, dry, well ventilated area. Never operate unit in enclosed areas such as garages, basements, storage, sheds, or in any location occupied by humans or animals. Keep children, pets and others away from area of operating unit. Breathing exhaust fumes will cause serious injury or death. Gasoline engines produce toxic carbon monoxide exhaust fumes. wARNING! The engine muffler will be very hot after use, avoid touching the engine or muffler while they are still hot. ELECTRIC SHOCK PREVENTION •Never operate in rain or snow. •Never touch the engine with wet hands or electric shock could occur. FUEL Make sure there is sufficient fuel in the tank. SPECIFIC SAFETY INFORMATION TAMPERING wITH FACTORY SET ENGINE SPEED SETTINGS. Engine speed has been factory set to provide safe operation. Tampering with the engine speed adjustment could result in overheating and could cause a fire. Never attempt to “speed-up” the engine to obtain more performance. ATTEMPTING TO FILL THE FUEL TANK wHILE THE ENGINE IS RUNNING. Gasoline and gasoline vapors can become ignited by coming in contact with hot components such as the muffler, engine exhaust gases, or from an electrical spark. Turn engine off and allow it to cool before adding fuel to the tank. Equip area of operation with a fire extinguisher certified to handle gasoline or fuel fires. SPARKS, FIRE, HOT OBjECTS Cigarettes, sparks, fires, or other hot objects can cause gasoline or gasoline vapors to ignite. Add fuel to tank in well ventilated area. Make sure there are no sources of ignition near the engine. wHEN REFUELING STOP ENGINE! NO SMOKING! DO NOT SPILL GASOLINE! KEEP FLAMMABLE MATERIALS AwAY. RISK OF FIRE. GASOLINE ENGINES PRODUCE TOxIC CARBON MONOxIDE ExHAUST FUMES. Basic & Specific safety Precautions BASIC & SPECIFIC SAFETY PRECAUTIONS 1. Do not put hands and feet near rotating parts or in the feeding chambers and discharge opening. Contact with the rotating impeller can amputate fingers, hands, and feet. 2. Before starting the machine, make sure the chipper chute, feed intake, and cutting chamber are empty and free of all debris. 3. Thoroughly inspect all material to be shredded and remove any metal, rocks, bottles, cans, or other foreign objects which could cause personal injury or damage to the machine. 4. If it becomes necessary to push material through the shredder hopper, use a small diameter stick. Do not use your hands or feet. 5. If the impeller strikes a foreign object or if your machine should start making an unusual noise or vibration, immediately shut the engine off. Allow the impeller to come to a complete stop. Disconnect the spark plug wire, ground it against the engine and perform the following steps: a. Inspect for damage. b. Repair or replace any damaged parts. c. Check for any loose parts and tighten to assure continued safe operation. 6. Do not allow an accumulation of processed material to build up in the discharge area. This can prevent proper discharge and result in kickback of material through the feed opening. 7. Do not attempt to shred or chip material larger than specified on the machine or in this manual. Personal injury or machine damage could result. 8. Never attempt to unclog either the feed intake or discharge opening while the engine is running. Shut the engine off, wait until all moving parts have stopped, disconnect the spark plug wire and ground it against the engine before clearing debris. 9. Never operate without the shredder hopper, chipper chute, or chute deflector properly attached to the machine. Never empty or change discharge bag while the engine is running. 10. Keep all guards, deflectors and safety devices in place and operating properly. 11. Keep your face and body back and to the side of the chipper chute while feeding material into the machine to avoid accidental kickback injuries. 12. Never operate this machine without good visibility or light. 13. Do not operate this machine on a paved, gravel or non level surface. 14. Do not operate this machine while under the influence of alcohol or drugs. 15. Muffler and engine become hot and can cause a burn. Do not touch. 16. Never pick up or carry machine while the engine is running. Safe Handling of Gasoline Powered Equipment: To avoid personal injury or property damage use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. Serious personal injury can occur when gasoline is spilled on yourself or your clothes which can ignite. Wash your skin and change clothes immediately. a. Use only an approved gasoline container. b. Never fill containers inside a vehicle or on a truck or trailer bed with a plastic liner. Always place containers on the ground away from your vehicle before filling. c. When practical, remove gas-powered equipment from the truck or trailer and refuel it on the ground. If this is not possible, then refuel such equipment on a trailer with a portable container, rather than from a gasoline dispenser nozzle. d. Keep the nozzle in contact with the rim of the fuel tank or container opening at all times until fueling is complete. Do not use a nozzle lock-open device. e. Extinguish all cigarettes, cigars, pipes and other sources of ignition. f. Never fuel machine indoors. g. Never remove gas cap or add fuel while the engine is hot or running. Allow engine to cool at least two minutes before refueling. h. Never over fill fuel tank. Fill tank to no more than ½ inch below bottom of filler neck to allow space for fuel expansion. i. Replace gasoline cap and tighten securely. j. If gasoline is spilled, wipe it off the engine and equipment. Move unit to another area. Wait 5 minutes before starting the engine. k. To reduce fire hazards, keep machine free of grass, leaves, or other debris build-up. Clean up oil or fuel spillage and remove any fuel soaked debris. l. Never store the machine or fuel container inside where there is an open flame, spark or pilot light as on a water heater, space heater, furnace, clothes dryer or other gas appliances. GETTING TO KNOw YOUR 3” CHIPPER SHREDDER 1. Hopper. Place leaves, twigs and branches up to 1/2” in diameter for shredding. 2. Chipper chute. Place branches up to 3” in diameter for chipping. 3. Chute deflector. All shredded or chipped material will come out of the chute deflector, it is recommended to install the collection bag to the chute deflector. 4. Chipper chute lock knob. For storage purposes, it is possible to unlock chipper chute and pivot it backwards. Lock knob and chipper chute must be locked before operating. 5. Oil gauge dipstick. Check the oil level using this oil gauge dipstick. 6. Power ON/OFF switch. This switch must be switched to “ON” before pulling recoil starter. 7. Recoil starter. Starts the engine. 8. Fuel Shut-off Valve. Regulates the flow of fuel to the engine. The fuel shut-off valve must be fully opened before starting the engine. 9. Choke lever. Once the engine is started, it is necessary to gradually move the choke lever to the “OPEN” position, see instructions futher in this manual. On warm starts, choke is not needed. 10. Carburetor throttle lever. Once the engine is started, move the trottle lever to increase or decrease engine speed. 11. Air cleaner element/cover. Periodically the air cleaner filter must be checked and maintained, see maintenance section. 12. Muffler. Be careful, the muffler can get very hot during operation, keep hands away. 13. Fuel cap. Make sure the fuel cap is always screwed on tightly. 14. Handle. For transport purposes. MODEL Chipper maximum diameter Shredder maximum diameter Engine (OHV) Displacement (cc) Fuel Fuel tank (L) Oil capacity (L) Assembled dimensions (LxWxH)/weight Package dimensions (LxWxH)/weight SPECIFICATIONS KCG-300CS 3” 1/2” 7 HP 208 Unleaded Gasoline 3.6 0.6 32” x 40” x 49” / 165 lbs 39-3/8” x 21-5/8” x 50”/ 200 lbs ASSEMBLY& INITIAL SET-UP BEFORE OPERATION ASSEMBLY Chute Deflector 1. Install the chute deflector (A) Fig.1 to the impeller housing using 2 hex. bolts and washers (B). Chipper Chute 1. Install the chipper chute base (C) Fig.1 to the impeller housing using 3 washers and nylon hex. nuts (D). 2. Pivot chipper chute (A) Fig.2 forward and secure it in the “operation” position using the lock knob (B). Tighten lock knob. Upper Hopper & Handle 1. Install the upper hopper (A) Fig.2A and the handle (B) to the hopper (C) using hex. bolts, washers and nylon hex. nuts (D & E). Installing Collection Bag It is not recommended to operate the Chipper/Shredder without the collection bag (A) Fig.3 installed to the chute deflector (B). To install collection bag; Figure 1 1. Place the opening of the collection bag (A) over the chute deflector (B) and the metal tabs (C) so they are covered. 2. Pull on the drawstring (D) until the collection bag is tight around the chute deflector opening. INITIAL SETUP BEFORE OPERATION ENGINE OIL LEVEL wARNING! This engine has been shipped from the factory without oil or very little oil in the crankcase. Operating your engine without the correct amount of oil can damage it. Oil crankcase capacity: 0.6 litres. Always check the oil level before starting the engine, make sure the engine is on a level surface. To check oil level; 1. Turn the oil gauge dipstick (A) Fig.4 counterclockwise, remove it and clean it with a clean cloth. 2. Fully reinsert the oil gauge dipstick and pull it out to check the oil level. 3. If the oil level is halfway up the dipstick or below, refill with SAE 10W30 oil through the dipstick hole until the oil level reaches 3/4 up the dipstick or until it reaches the bottom lip of the dipstick hole as shown in the illustration above. 4. Reposition the oil gauge dipstick and tighten it by turning clockwise. Figure 3 Figure 2 Figure 2A Figure 4 INITIAL SET-UP BEFORE OPERATION & STARTING ENGINE INITIAL SETUP BEFORE OPERATION ENGINE FUEL LEVEL wARNING! The engine comes with no fuel in the fuel tank. Make sure there is enough fuel in the fuel tank before operating. 1. If it is necessary to add fuel, first make sure the engine switch is OFF, then open the fuel cap (A) Fig.5 by turning it counterclockwise. 2. When refueling, keep in mind all safety precautions and make sure to add enough fuel based on usage. Use clean unleaded gasoline with a minimum of 87 octane. Do not mix oil with gasoline. Fuel tank capacity: 3,6 litres. ENGINE AIR CLEANER FILTERS Figure 5 The air cleaner filters should be checked before every start-up and after prolonged storage, the following steps should be done when checking air cleaner filters; 1. Remove the wing nut (B) Fig.6, lift to remove the air cleaner cover (A) as shown. 2. Remove the wing nut and washer (D) Fig.6, lift and remove air filters (C) Fig.6 from its base. Remove the foam filter (A) Fig.7 from the paper filter (B), wash foam filter in kerosene, squeeze kerosene out, soak foam filter in engine oil and squeeze engine oil out. 3. In a well ventilated area, use pressurized air to blow dust out of the paper filter (B) from the side opposite the filter’s normal air flow (clean side). 4. Replace filters and replace the air cleaner filter cover. Secure all parts with wing nuts. STARTING GASOLINE ENGINE To safely start your engine, follow these steps in Fig.8. Figure 6 Note: No choke is required on warm engines. Pull the recoil starter handle until resistance is felt, then pull it out with a rapid full arm stroke. Let the starter rope rewind slowly, repeat if necessary. Allow engine to run at no load for 5 minutes upon each initial start-up to allow engine to stabilize. STOPPING YOUR ENGINE 1. Move the throttle lever (step 9, Fig.8) towards the right. 2. Turn the engine switch (step 6, Fig.8) to the “OFF” position. 3. Close the fuel shut-off valve (step 3, Fig.8) by moving it towards the left. Figure 8 Figure 7 OPERATION OPERATION wARNING: The operation of any chipper shredder can result in foreign objects being thrown into the eyes, which can damage your eyes severely. Always wear the safety glasses or eye shields before chipping or shredding and while performing any adjustments or repairs. Shredding Yard waste such as leaves and pine needles can be placed in the hopper (A) Fig.9 for shredding. After material has been processed by the shredder blade and flails, it will be forced out of the chute deflector, into a debris collection bag. Observe the following guidelines when shredding yard debris: • Never attempt to shred material other than normal yard debris (leaves, twigs, pine cones, etc.). Figure 9 • Avoid shredding fibrous plants such as tomato vines until they are thoroughly dried out. Fresh vines do not shred well and tend to wrap themselves around the impeller and flails. • Place reasonable amounts of debris into the hopper at a time. Do not overload the hopper. • Allow the material in the hopper to be drawn into the blades and shredded before adding additional debris to the hopper. Failure to due so may result in a clogged hopper, clogged chute deflector or a stalled engine. • Avoid placing twigs longer than 24” into the hopper. Twigs longer than 24” may result in a clogged hopper. IMPORTANT: Never place branches with a diameter greater than 1/2-inch in the hopper. Doing so can result in serious damage to the unit’s shredder blade, flails or impeller. Chipping wARNING: Never operate the chipper shredder without chipper chute lowered and locked into the operating position. Branches up to 3” in diameter can be fed into the chipper chute (A) Fig.10. Observe the following guidelines when chipping branches: • Keep both hands firmly on the branch as you feed it into the chipper chute. • Never feed more than one branch into the chipper chute at a time. Figure 10 • Never feed anything other than branches (or wood) into the chipper chute. • Apply intermittent pressure (force, in short pulses) while feeding larger branches into the chipper chute, to avoid bogging or stalling the engine. NOTE: For best performance, always operate the unit with sharp chipper blades. If a noticeable loss in performance is encountered while chipping branches, the chipper blades should be replaced. Refer to the Maintenance section of this manual for more information. Emptying the Collection Bag 1. Stop engine. Figure 11 2. Squeeze the locking buckle (A) Fig.11 to release the bag’s draw-strap before loosening it from the chute deflector. 3. Empty the collection bag and reattach it to the chute deflector. STORAGE & MAINTENANCE Storage ALWAYS shut off the engine before cleaning, adjusting, or repairing the chipper shredder or its engine. Follow the instructions below for storing your chipper/shredder between uses. 1. Unlock and pivot the chipper chute backwards to minimize the space needed for storage. 2. Allow the machine to cool 5 minutes before storing. WARNING: A hot engine can be a fire hazard. 3. Store the chipper/shredder in a location away from corrosive material, sources of heat, open flames, sparks or pilot lights. WARNING: Never store chipper/shredder inside where there is a source of heat or an open flame, spark or pilot light – such as water heaters, space heaters, furnaces, clothes dryers, or other gas appliances – EVEN IF the chipper/shredder's gas tank is empty, residual gasoline vapors could ignite. NOTE: Do not store the chipper/shredder near fertilizer or any other corrosive material. Lubrication 1. Lubricate the chipper chute hinge a with light oil once a season. Cleaning 1. Clean the chipper shredder thoroughly after each use. 2. Wash collection bag periodically with water. Allow to dry thoroughly in shade. 3. If the reduction chamber becomes clogged, remove and clean as instructed below. Cleaning The Reduction Chamber wARNING: The impeller’s shredder blade and chipper blades are sharp. Wear leather work gloves to protect your hands when cleaning out the reduction chamber. If the reduction chamber becomes clogged with debris, the shredder screen can be pivoted upward so that you can clean the surrounding area. To do so, proceed as follows: 1. Stop engine, disconnect spark plug, and make certain the chipper shredder has come to a complete stop. wARNING: The muffler and surrounding area will be hot if the engine has been running. Use caution and protect your hands if working near the muffler. Figure 12 Blade Care- Chipper Blades wARNING: The impeller’s chipper blades are sharp. Wear leather work gloves to protect your hands. Figure 13 2. If attached, remove the collection bag. Remove the two hex. bolts (A) Fig.12 on either side of the chute deflector (B) and remove the chute deflector. 3. Remove the cotter pin (C) from the large pin (D) which extends through the housing and shredder screen (E). Remove large pin (D). 4. Pivot the shredder screen (E) upward. Clean the surrounding area by scraping away debris. 5. Make sure the spark plug wire is disconnected and away from spark plug. Pull on the recoil starter handle two-to-three times to purge any remaining debris from the reduction chamber. 6. When the area is cleaned, pivot the shredder screen downward and re-secure with the large pin and cotter pin removed earlier. 7. Reinstall the chute deflector and the collection bag. 1. Stop engine, disconnect spark plug, and make certain the chipper shredder has come to a complete stop. 2. Pivot the shredder screen(E) Fig.12 upward as instructed in the section Cleaning the Reduction Chamber. 3. Remove the chipper chute (A) Fig.13 by removing three nylon hex. nuts and washers (B) which secure it to the impeller housing (C). 4. Rotate the impeller (A) Fig.14 by hand until one of the two chipper blades (B) is visible through the impeller housing opening. 5. Remove the blade by removing the allen flat head screws, spring washers and nylon hex. nuts (C) Fig.14 which secure it to the impeller. 6. Install a replacement blade with the hardware removed earlier or sharpen chipper blade. IMPORTANT: When manipulating or sharpening the blade, protect hands by using gloves. Follow the original angle of grind and make sure to remove an equal amount from each blade. 8. To replace the other blade, rotate the impeller to expose the second blade and repeat the steps above. Figure 14 NOTE: Make sure the blades are reassembled with the sharp edge outward (toward the chipper chute). Torque hardware between 20 ft.-lbs and 25 ft.-lbs. STORAGE & MAINTENANCE Blade Care- Shredder Blade wARNING: The shredder blade is sharp. Wear leather work gloves to protect your hands. 1. Stop engine, disconnect spark plug, and make sure that all moving parts have come to a complete stop. 2. Remove the two nylon hex. nuts and hex bolts (A) Fig.15 which secure the hopper support bracket (B) to the impeller housing (C). 3. Pivot the shredder screen (E) Fig.12 upward as instructed in the section Cleaning the Reduction Chamber. 4. Remove six nylon hex. nuts (A) Fig.16 which secure the hopper inlet guide (B) to impeller housing (C). 5. Carefully separate the hopper assembly from the impeller housing and set it aside. 6. Insert a piece of wood into the chute deflector opening as shown in Fig.17 to stabilize the impeller (A) and prevent it from rotating when removing the shredder blade (B). 7. Remove the two allen flat head screws, spring washers and nylon hex. nuts (C) which secure the shredder blade to the impeller. 8. Remove the hex bolt, lock washer, and washer (D) to completely free shredder blade. Figure 15 IMPORTANT: If sharpening the blade for reuse, follow the original angle of grind as a guide. Make certain each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. Remove metal from the heavy side until it is balanced evenly. IMPORTANT: When reassembling the blade, tighten center hex. bolt (D) Fig.17 to between 45 ft.-lbs and 58 ft.-lbs and the two two allen flat head screws to between 20 ft.-lbs and 25 ft.-lbs. Figure 16 Engine Storage & Maintenance If you plan on storing your chipper/shredder for an extended period of time, the following steps should be followed; 1. Add fuel stabilizer to fuel tank to minimize the formation of fuel gum deposits during storage. 2. Run engine at least 5 minutes after adding stabilizer to allow it to enter the fuel system. NOTE: If a fuel stabilizer is not used, all gasoline must be drained from the tank and carburetor to prevent gum deposits from forming on these parts and causing possible malfunction of the engine. To drain gasoline; 3. Turn fuel shut-off valve (A) Fig.18 to the “OFF” position. 4. Position a drain pan under the caburetor. 5. Remove drain hex. bolt (B) Fig.18 from the carburetor (C) and drain the fuel from the carburetor and hose. 6. Turn fuel shut-off valve (A) to the “ON” position. 7. Drain fuel from tank. 8. Reinstall the carburetor drain hex. bolt once the fuel is completely drained. 9. Drain engine oil from engine. 10. Gently pull the recoil starter handle to distribute oil into the cylinder, pull until resistance is felt. 11. Cover and store in a dry, well ventilated area. Figure 17 Note: To prevent corrosion or moisture build-up during storage, do not cover the engine with a poly-bag or similar material. Figure 18 MAINTENANCE Maintaining your engine Engine Oil Replacement Oil crankcase capacity: 0.6 litres. Engine oil should be replaced after the first 20 hours of operation or after the first month of use, it should be replaced every 100 hours or 6 months after. To replace engine oil; 1) Loosen the oil gauge dipstick (B) Fig.19. 2) Place an oil pan underneath drain hex. bolt (A), remove hex. boltand drain oil. Figure 19 3) Once all the oil has completely drained, reinstall the hex. bolt (A). Recommended Engine Oil It is recommended to use SAE 10W30 4-stroke gasoline engine oil. For cold weather (below -15ºC) use SAE 5W30. 4) Fill with clean engine oil through the oil gauge dipstick hole, fill then check oil level until the oil level reaches 3/4 up the dipstick or until it reaches the bottom lip of the dipstick hole as shown in illustration above. Inspecting, Replacing or Cleaning Spark Plug (F6RTC or equivalent) Figure 20 The spark plug should be checked every 100 hours of operation or every 6 months. To replace or clean spark plug; 1) Dismantle the spark plug cap (A) Fig.20 by pulling it off the spark plug (B). Using a spark plug wrench, undo the spark plug by turning it counterclockwise. 2) Check to see if there is carbon sediment build-up, if so just remove it. If the carbon sediment is excessive, replace the spark plug. Figure 21 3) Measure the electrodes clearance. See Fig.21. The spark plug electrode clearance should be between 0.7-0.8mm. If the clearance exceeds 0.8mm, replace the spark plug with an CH F6RTC or equivalent (NGK BPR6ES, Champion RN9YC). 4) Reinstall spark plug in the reverse order. Cleaning Deposit Cup 1) Push the fuel valve to the closed (left) position, see Fig.18. 2) Remove centre deposit cup bolt (B) Fig.22 using a wrench. Place a pan under the deposit cup to catch any gasoline inside the carburetor. 3) Remove deposit cup (A) Fig.22 and o-ring (C), wash both in solvent. 4) Reinstall parts in reverse order. Engine maintenance schedule After initial 20 hours of operation: Change engine oil. Every 25 hours of operation thereafter: Clean/replace air filter. Inspect/clean spark plug. Every 50 hours of operation: Change engine oil. Every 100 hours of operation: Replace spark plug. Replace air filter. Figure 22