OWNER’S MANUAL GENERAL GASOLINE ENGINE 62027 62029
PREFACE Thank you for choosing a general gasoline engine by our company. Based on the latest engine technology at home and abroad, our Co. has individually developed general gasoline engines with 4-stroke single cylinder, OHV and forced-air cooling. The engines are characterized by advanced design, compact structure, reliable performance, convenient service low fuel consumption and easy speed adjustment.
! WARNING △ ● A warning is used to alert the user to fact that hazardous operation and maintenance procedures may result in injury to or death of personnel if not strictly observed. CAUTION ● A caution is used to alert the user to fact that hazardous operation and maintenance procedures may result in injury to or death of personnel if not strictly observed. NOTE ● A note is used to give helpful information. This manual book is the part of engine; it must be along with the engine.
CONTENTS Safety Precautions………………………………………………………………………………………………...5 Parts Description………………………………………………………………………………………………….6 Pre-Operate Inspection……………………………………………………………………………………………7 I. Engine Oil………………………………………………………………………………………. ..…………7 II. Oil in the reduction gearbox (only for equipped model)……………………………………….……..…….8 III. Air cleaner………………………………………………………………………………….……………....9 IV. Fuel………………………………………………………………………………..…. ……………………9 Starting of the Engine………………………………………………………………………………….………....
1) 2) 3) 4) 5) Replacement of the Oil……………………………………………………………………. ………. ………20 Maintenance of the air cleaner…………………………………………………………. ………. ………....21 Washing of Deposit Cup……………………………………………………………………. ………....……22 Maintenance of the spark plug……………………………………………………………. ……….………..22 Maintenance of the Spark Plug（Option）………………………………………………. ……….………..24 6) Adjustment of Carburetor Idling………………………………………... ………. ……….……..25 Transport and Storage……………………………………………………………………………….…………..
SAFETY PRECAUTIONS ! WARNING △ Before operating the engine, be sure to read and familiar with the manual carefully, otherwise injury to personnel or damage to equipment may occur. Please pay special attention to the following: 1. Running the engine in a well-ventilated place, keep it at least one meter away from building walls or other equipments; keep away from inflammables such as gasoline, matches and so on to avoid possibility of fire. 2.
PARTS DESCRIPTION 6
PRE-OPERATE INSPECTION Ⅰ.ENGINE OIL CAUTION ● Engine oil is a key factor in deciding the engine’s performance. Do not apply engine oil with additives or 2-stroke gasoline oil, as they haven’t enough lubrication, which may shorten the engine’s service life. ● Check the engine with it stopped on a level ground. Engine oil recommended: SAE10W-30。 As viscosity varies with regions and temperatures, so the Lubricant has to be selected in accordance with our recommendation. (Pic.1) (Pic.1) Inspect step: 1.
3. If the oil level is too low, add recommended engine oil to the filler neck. 4. Reinstall the dipstick. CAUTION Run with insufficient engine oil may damage the engine severely. Ⅱ. OIL IN THE REDUCTION GEAR BOX (only for the model equipped with it) 1/2 Reduction gearbox with an auto-centrifugal clutch. 1. Remove the dipstick and clean it. (Pic. 3. Pic.4) 2. Reinsert the dipstick without screwing it in, and then take out it and check oil level. 3.
Ⅲ. AIR CLENANER(Pic. 5) CAUTION Never run the engine without an air cleaner, or severe wear of the engine may occur. Dismantle the air cleaner housing and check its filter element, make sure it is clean and intact, otherwise clean or replace it. (Pic. 5) Ⅳ. FUEL 1. Gasoline is extremely flammable and may explosive under certain conditions. 2. Refueling in a well – ventilation area with the engine stopped.
5. Avoid repeated or prolonged contact with skin or breathing of fuel vapor. Keep out of reach of children. Fuel tank capacity: 3.6liters The engine must apply unleaded gasoline with an octane number over 86.Using unleaded gasoline will decrease the possibility of producing carbon deposit and prolong the engine’s service life. Never apply used or polluted gasoline or a mixture of gasoline and engine oil. Make sure the fuel is free of dirt and water.
STARTING OF THE ENGINE 1.Push the fuel switch to “ON”. (Pic.6) 2.Push the chock lever to “OFF”. (Pic.7) (Pic.6) (Pic.7) NOTE If the engine is hot, closing the choke is unnecessary. 3.Move left the throttle lever a little. (Pic.8) (Pic.
4.Start the engine a). Rope handle Starter. Push the engine switch to “ON”. (Pic. 9) then make a rapid pull. (Pic. 10) Pull slightly the starting rope handle up until feeling anti-action, and Engine switch (Pic. 9) (Pic. 10) CAUTION Releasing the handle suddenly may make it hitting the engine. Release the handle slowly conforming to its recoiling force. Starter 2) Electric starter Push the engine switch to “START” and remain there until the engine Start. (Pic. 11) Engine switch 12 (Pic.
CAUTION Use the engine switch not more than 5 second each time to avoid damage of the engine. Try once more 10 second later after last attempt failures. Once the engine starts, reset the engine switch to “ON”. OPERATION 1.Preheat the engine and push back the choke lever to “ON”.(Pic.12) 2. Set the throttle lever in proper position to ensure the engine runs at required velocity.(Pic.13) (Pic .12) (Pic .
Engine Oil Alarm The engine oil alarm is designed to alarm the user the fact that the engine oil in the crankcase in insufficient. Run with insufficient engine oil may damage the engine. Once oil level in the crankcase is too low, the engine oil alarm will stall the engine automatically to make it free of damage while the engine switch is still at “ON”. CAUTION If the engine still fails to work, check the engine oil level first before go to other check items.
The green indicator would be light once the circuit off. If this happens, please find out the reason and solve it then press the button to recover the breaker. Operating on Highlands On highlands, the standard mixture ratio is relatively too big so the engine performance may be impaired while the fuel consumption may increase. This problem can be solved as follows: replace the main jet of carburetor with a smaller one, then, adjust the idly screw.
STOP In an emergency, push the engine switch to “OFF” to stall the engine. Stop it in normal in the following sequence: 1. Push right the throttle valve lever to the bottom (Pic. 15) 3. Set the fuel switch to “OFF” (Pic. 15). 2. Push the engine switch to “OFF” (Pic. 16) (Pic. 17) (Pic. 17) 16 (Pic.
EXHAUST CONTROL SYSTEM With the engine running, carbon monoxide, oxide of nitrogen and hydrocarbon will produce, and in certain conditions, oxide of nitrogen and hydrocarbon will react chemically each other to make smoke while carbon monoxide is toxic, so exhaust control of them is very important. The company decreases the exhaust emissions by introducing poor-fuel carburetors and other devices into the engine to solve the problem.
2.Modify or take off speed-adjusting connection device or speed adjustment device to result in the engine’s running or outside the set parameters. Ⅳ.PROBLEMS AFFECTING EXHAUST EMISSIOS 1. Difficult starting or difficult stopping. 2.Unstable idling. 3.Give off black smoke or consume too much fuel. 4.Poor ignition sparks or sparks returned. 5.Ignition is too advanced. Once you find any of above problems, contact your dealer for help.
MAINTENANCE I.
NOTES : Only for inside-ventilating double-core carburetors. : Only for paper core air cleaners. 1) More often than that in the schedule if in dusty circumstances. 2) The items should be done by your dealer you are specially trained and is well equipped with tools. Ⅱ. METHOD 1. Replacement of Engine Oil A still hot engine is helpful to drain out the engine oil in the crankcase rapidly and entirely. (Pic. 18) 1) Turn off the oil filler cap and drain plug to drain engine oil thoroughly.
NOTE Do not dump oil containers or discarded engine oil into rubbish boxes or onto the ground. For the sake of environmental protection, we suggest you take in discarded engine oil with a closed container and bring to local recycling station. 2.Service of Air Cleaner A dirty air cleaner may block enough air’s flowing into the carburetor. To keep the carburetor in Good working conditions, please service the air cleaner periodically.
then dry-up the air cleaner box. 5)install the air cleaner filter and cover to original position. 3.Washing of Deposit Cup. Set the fuel switch at “OFF”, remove the deposit cup and O-ring. Wash them in non-flammable or high flash-point cleansing solvents, and then dry them up, at last, carry out reinstallation. Set the fuel switch to “ON” and check for leaks. (Pic. 19) (Pic. 19) ! WARNING △ Gasoline is extremely flammable and explosive in certain conditions. Keep cigarette, sparks and open flames away.
Proper spark plug clearance and without deposit around the spark plug ensure the engine’s normal running. 1) Remove the spark plug by means of spark plug wrench. (Pic. 20) ! WARNING △ Be careful not to touch the muffler during or just after running the engine. 2) Clean the spark plug with a steel brush. If the insulator is damaged, replace the spark plug instead. 3) Measure the spark plug clearance with a feeler. The clearance should be 0.7～0.
CAUTION The spark plug must be tightened securely, or it may become very hot to damage the engine. Only use recommended spark plug or the equivalent. Incorrect heat range of the spark plug may damage the engine. 5. Spark Eliminator (Option) (Pic. 23) The spark eliminator should be serviced at least once every 100 hour’s operation so as to keep it in a sound condition. ! WARNING △ (Pic. 23) The muffler is very hot during running the engine and even a long Time after stopping.
d) Clear away carbon deposit from the spark eliminator mesh with a brush. e) Reinstall the spark eliminator in reverse order of removal. (Pic. 24) CAUTION Be careful not to damage the mesh of the spark eliminator. Never use a damaged spark eliminator. 6.Adjustment of Carburetor Idling (Pic. 24) a) Start and preheat the engine until arriving at its normal working temperature. b) Obtain standard idling by adjusting the throttle fixing screw under the engine runs at a low speed. (Pic.
TRANSPORT, STORAGE AND REMOVAL FROM STORAGE I.TRANSPORT Transport with the fuel switch turned off. Transport or store the engine it is cool so as to avoid getting burns or fire. If the engine is not kept in use for a long time, be sure to store it properly. 1) Make sure the storage area is dry and free of dust. 2) Make sure to put the oil (which in the gasoline tank and carburetor) into another proper container. CURTION Fuel is extremely flammable and explosive under certain conditions.
TROUBLESHOOTING Ⅰ. STARTING ENGINE DIFFICULTLY TROUBLE 1. Something wrong with the fuel system 2. Fuel supply is blocked or on fuel. Normal cylinder compression Normal spark CAUSE There is no enough fuel in fuel tank or fuel cock is closed Air vent in the filler cap is clogged. Fuel cock is clogged.
TROUBLE CAUSE REMEDY 1. Spark plug is in bad Too much carbon fouling and dirt Clear away condition around electrodes Normal cylinder Electrodes are burn damaged Replace spark plug compression seriously or insulators damaged Normal fuel supply Improper electrodes gap Adjust to proper value Normal high-pressure coil spark Replace 1.
TROUBLE 1.
Ⅱ. LOW GASOLINE ENGINE POWER OUTPUT TROUBLE REMEDY Readjust ignition advance angle When turning throttle Air in fuel line of fuel line Exhaust air or dredge greater, speed increase Fuel supply clogged. fuel line responds slowly or speed is system Main jet is not adjusted Readjust decreased even engine stops Properly. In carburetor, needle valve Clean and blow to hole and main jet clogged get through Fuel cock is clogged up Clean, replace Damage part.
TROUBLE Do. Do. Poor compression CAUSE Intake pipe is leaking Piston or cylinder or piston ring is worn. Air leakage from the surface by which cylinder block contacting with cylinder head. Too big or too small valve clearance.
Ⅲ. GASOLINE ENGINE CANNOT RUN SMOOTHLY TROUBLE Engine is pinking Do. TROUBLE Abnormal combustion Engine cannot start because of spark lacking CAUSE Piston, cylinder or piston ring is worn excessively. Piston pin and piston pin hole are worn excessively. Tie rod small head is worn excessively.
Ⅳ. STOP SUDDENLY WHEN RUNNING TROUBLE Stop suddenly Fuel supply system When running Do. TROUBLE When running Do. Ignition system Do.
The other Parking wire is located on Find out meeting and insulate the engine body Cylinder is pulled Repair or replace damaged considerably, valve falls parts off 34
Ⅴ.
excessive hot. Ⅵ.
SPECIFICATIONS Ⅰ. MAIN SPECIFICATIONS Model Items L ×W × H (mm) Dry weight (kg) Engine type Displacement (cm3) 62027/62029 380×312×360 <380×332×360> 16 <17.9 > 4-stroke, OHV, single cylinder tilt 25° 212 70×55 Bore ×stroke (mm) Max. Power in theory (kW/r/min) Power recommended (KW/r/min) Max. Torque (N·m /r/min) Fuel consumes. (g/kWh) Cooling system Ignition system Spark plug type Out direction of power shaft 5.5(7. 5PS)/3600 4.5(6.0PS)/3600 11.
Date relating to Adjustment Item Date Spark plug clearance 0.7～0.8mm Carburetor idling 1500±100rpm Valve clearance (cold engine) Intake: 0.15±0.02mm; Exhaust: 0.20±0.02mm NOTES Technical data vary with type of engine; therefore, they are subject to change without notice. Data in﹤﹥are suitable for engine which is equipped with reducer. Ⅱ. TIMING OF DISTRIBUTION Intake valve opening: BTDC10°; Intake valve closing: ABDC20°; Exhaust valve opening: BBDC30°; Exhaust valve closing: ATDC10° Ⅲ.
Electric Diagram（electric start） Except Electric Start Model, Different Model have different electric diagram.
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