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Summary of Contents for LIFAN Power USA 2V77F
- Page 2 The manual gives information about the operation and maintenance of gasoline engine 2V77F and 2V77F-A. 2V77F is started by electricity while 2V77F-A is started by electricity or manual. Please read it carefully before operating. To extend the service life, users should strictly follow the stipulations stated in the manual to carry out operating and maintenance.
- Page 3 IMPORTANT NOTICES Please pay special attention to statements preceded by the following words: 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 ●...
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Page 4: Table Of Contents
CONTENTS SAFETY PRECAUTIONS ............................... 6 PARTS DESCRIPTION ..............................7 BATTERY CONNECTION(electric-start type) ......................8 CONTROL CONNECTION OF REMOTE DISTANCE (OPTION) ................ 10 PRE-OPERATE INSPECTION ............................ 12 Ⅰ. Engine oil ................................12 Ⅱ.Air cleaner ................................13 Ⅲ. Fuel and fuel tank ..............................14 STARTING THE ENGINE ............................ - Page 5 Ⅰ. Start engine difficultly ............................34 Ⅱ. Low gasoline engine power output ........................36 Ⅲ. Gasoline engine cannot run smoothly ......................... 37 Ⅳ. Stop suddenly when running ..........................38 Ⅴ. Gasoline engine is excessively hot ........................39 Ⅵ. There exists abnormal noise when engine running ..................... 40 SPECIFICATIONS .................................
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Page 6: Safety Precautions
SAFETY PRECAUTIONS WARNING: Before operating the engine, be sure to read and familiar with the manual carefully, otherwise personal injury or equipment damage 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. -
Page 7: Parts Description
PARTS DESCRIPTION Fig. 1... -
Page 8: Battery Connection(Electric-Start Type)
(electric-start type) BATTERY CONNECTION In the case that the specifications of the battery are 12V and more than 45A.h, connect its positive lead to the electromagnetic coil while connect its negative lead to engine mount strew, base screw or any place capable of grounding with the engine well. - Page 9 CAUTION: ● Do not add tap water to the battery instead of distilled water, or the battery life will be shortened. ● Do not add distilled water over electrolyte upper level mark, or electrolyte will spill out to corrupt the engine parts.
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Page 10: Control Connection Of Remote Distance (Option)
CONTROL CONNECTION OF REMOTE DISTANCE (OPTION) Throttle and choke levers are designed with holes for optional cable accessories. 1. The diagram shows the installation method of single strand cable and woven cable. a) Remote-controlled choke valve and Remote-controlled throttle valve. Fig.3... - Page 11 b) Remotely –controlled throttle valve and Manually-controlled choke valve Fig. 4 c) Manually-controlled throttle valve and Manually-controlled choke valve Fig. 5 2. Put the levers of both the choke and throttle on the controlled pedestal.
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Page 12: Pre-Operate Inspection
PRE-OPERATE INSPECTION Ⅰ. Engine oil CAUTION: ● Engine oil is a key factor in deciding the engine’s performance. Do not use engine oil with additives or 2-stroke gasoline engine oil, as they haven’t enough lubrication, which may shorten the engines service life. ●... -
Page 13: Ⅱ.air Cleaner
4）if the oil level is too low, fill the recommended oil to the upper level mark. 5）Reinstall oil plug and dipstick. CAUTION: 1. Run with insufficient engine oil may severe damage the engine. 2. Please stop the engine and check it on ground level. Ⅱ.Air cleaner Dismantle the air cleaner cover (Fig. -
Page 14: Ⅲ. Fuel And Fuel Tank
CAUTION: 1. Do not allow the engine in operation without air cleaner, or it will speedup its abrasion. 2. Keep dust and fragment out of the air cleaner housing. Ⅲ. Fuel and fuel tank The engine must apply unleaded gasoline with an octane number over 86. Using unleaded gasoline will decrease the possibility of producing carbon deposit and will prolong the engine’s service life. -
Page 15: Starting The Engine
STARTING THE ENGINE CAUTION: PPE devices (ear protection, gloves) should be used before start the engine. 1. Push the fuel cock to “ ON ”.（Fig.9）（Option） Fig.10 Fig. 9 Fig.11 2. Push the choke lever to “ CLOSE ”.（Fig.10）。 3. Push the throttle to “FAST” slowly. 4. - Page 16 b) Electric starter Push the engine switch to “START” and keep 5 seconds to make it start. Fig.13 CAUTION: Use the engine switch not than 5 minutes each time to avoid damage of the engine. Try again 10 seconds later after last attempt failures.
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Page 17: Running The Engine
RUNNING THE ENGINE 1. If the engine stars when the choke knob “CLOSE”, please push it to “ON” immediately after the engine runs smoothly. Fig. 14 Fig. 15 2. Set the throttle lever in proper position to ensure the engine runs at required velocity. Ⅰ. -
Page 18: Ⅱ.breaker
CAUTION: If cannot restart the engine, check the engine oil level first before go to other check items. Ⅱ.Breaker The breaker which protect the charging circuit of the battery will cut off automatically in the case that short circuit or incorrect connection of the battery poles occurs. The green indicator in the breaker will jump out with the circuit cutting off. -
Page 19: Stop
STOP In an emergency, push the engine switch to “OFF” to stall the engine. Normally, stop it in the following steps: 1. Push the throttle lever to (SLOW) slowly. (Fig. 16) 2. Push the engine switch to “ OFF ”.（Fig.17） 。 3. -
Page 20: Exhaust Control System
EXHAUST CONTROL SYSTEM When 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. - Page 21 1）Dismantle or modify any part of air intake or exhaust system. 2） Modify or take off speed – adjusting connection device or speed adjustment device to result in the engines running beyond the set parameters。 4. Problems affecting exhaust emissions 1) Starting or stopping difficult.
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Page 22: Maintenance
MAINTENANCE Ⅰ. Maintenance schedule In order to keep the engine under the good condition, you must take maintain and adjust for it periodly. Please use following schedule to maintain and check. First Each Every 6 Frequency Each Each year or month or season or month or... -
Page 23: Ⅱ. Maintenance Method
CAUTION: 1. Please stop the engine before serving. 2. In order to prevent engine from the suddenly start, please turn off the ignite switch and put down the spark plug cap. CAUTION: Use only parts from the company or equivalents in quality; otherwise engine damage may result. ①... - Page 24 Fig. 19 Fig. 20 Engine oil capacity in the crankcase is 1.4 liters. NOTE: Do not throw oil containers or discarded engine oil into rubbish boxes or onto the ground. For the sake of environmental protection, we suggest you throw the discarded engine oil into a closed container and bring to local recycling station.
- Page 25 4） To put a layer of clean engine oil on the “O” shaped seal ring, then fix it on the seat of oil-filter. 5） Daub a lay of clean oil on the surface of “O” ring and install it on air cleaner housing. 6）...
- Page 26 WARNING: Never clean the foam and paper filter element with in gasoline or low flash-point detergents, or explosion may happen. CAUTION: Never run the engine without an air cleaner, or dirt and dust may enter the engine so speed the engine’s wear.
- Page 27 Foam filter element: clean it with home detergents and warm water (or non-flammable or high flash-point cleansing solvents) and dry up, then soak in clean engine oil until saturated. Squeeze out excess oil, otherwise, the engine will discharge smoke in starting stage.
- Page 28 WARNING: If the engine operates all the time, muffler will be very hot, so please don’t touch the muffler. Fig. 23 Fig. 24 Fig. 25 2）Check spark plug carefully, if there is distinct corrosion, or crack or cast in the insulator, this spark plug should be rejected.
- Page 29 CAUTION: If a new spark plug is used, twist 1/2 more turns after impacting the gasket, If reinstall the original one, just twist 1/8-1/4 more turns. CAUTION: The spark plug must be tightened securely, or it may become very hot to damage the engine. Use the recommended spark plug or the equivalent.
- Page 30 1）Screw off the special screw from muffler and remover the sparkle suppressor. 2）Clear away carbon deposit from the spark eliminator mesh with a brush. Fig.26 CAUTION: Be careful and do not damage of the spark eliminator mesh. NOTE: Sparkle eliminator can never be damaged, otherwise please use a new one. 3）Install sparkle eliminator and muffler in term of the order of disassembly.
- Page 31 6. Change the fuse When the fuse is fusing, it means the turnoff of circuitry or over loading. Please contact with the dealer about repair. Rated current：25A 1． Screw off M6 special bolt from the cover of switch box and remove the cover.(Fig.27) 2．...
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Page 32: Transport, Storage And Removal From Storage
TRANSPORT, STORAGE AND REMOVAL FROM STORAGE Transport Transport with the fuel cock turned off. Transport or store the engine when it is cool so as to avoid getting burns or fire. CAUTION: Do not incline the engine so as to avoid fuel’s spill. Spilled fuel or fuel vapor may ignite to cause fire. Storage If the engine is not use for a long time, be sure to store it properly. - Page 33 WARNING: Fuel is extremely flammable and explosive under certain conditions. Keep cigarette, open flames and sparks away from operating site. 3. Replace engine oil. 4. Disconnect the spark plug. Fill about a spoon of fresh engine oil from the spark plug mount hole onto the cylinder. Crank the engine up to distribute engine oil evenly.
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Page 34: Troubleshooting
TROUBLESHOOTING Ⅰ. Start engine difficultly ITEM CAUSE REMEDY Check battery connection Incorrect connection connect in proper way (P.5) Check the breaker, charge the battery Check battery No charge or under charge, corrosion or replace it Check the machine according the following table if the motor runs well TROUBLE CAUSE REMEDY... - Page 35 TROUBLE CAUSE REMEDY Too much carbon deposit and Clear away. dirt around electrodes. good high spar pressure Electrodes are burn damaged Normal normal Replace spark plug. wire seriously or insulators damaged. compres fuel plug Improper electrodes gap. Adjust to proper value. sion of supply High –...
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Page 36: Ⅱ. Low Gasoline Engine Power Output
WARNING: ● When testing the spark plug, never hold the high- voltage wire of the spark plug with wet hand. ● Make sure there is no spilled fuel outside the engine and that the spark plug isn’t dipped with fuel. ●... -
Page 37: Ⅲ. Gasoline Engine Cannot Run Smoothly
Ⅲ. Gasoline engine cannot run smoothly TROUBLE CAUSE REMEDY Piston, cylinder or piston ring is worn excessively. Replace the worn Piston pin and piston pin hole are worn excessively. Replace piston or piston pin Engine is pinking Tie rod small head is worn excessively. Replace tie rod Roller bearing for crankshaft main shaft is worn. -
Page 38: Ⅳ. Stop Suddenly When Running
Ⅳ. Stop suddenly when running TROUBLE CAUSE REMEDY Fuel is used up Refill fuel Carburetor is clogged Check fuel line and dredge Fuel supply system Float is leaking Repair Dismantle float chamber and Needle valve sticks eliminate it Stop Spark plug is struck through, or short-circuited Replace spark plug by carbon deposit suddenly... -
Page 39: Ⅴ. Gasoline Engine Is Excessively Hot
Ⅴ. Gasoline engine is excessively hot TROUBLE CAUSE REMEDY Adjust ignition advance angle Improper ignition time properly Insufficient fuel supply Refill engine oil Exhaust pipe is blocked up Dredge exhaust pipe Flow guard is leaking Repair damaged part Gasoline Clear away dirt or something Dirt or something like this fill up among air cooling fins engine is like this... -
Page 40: Ⅵ. There Exists Abnormal Noise When Engine Running
Ⅵ. There exists abnormal noise when engine running TROUBLE CAUSE REMEDY Piston, piston ring or cylinder is worn Replace the worn Tie rod or piston pin and piston pin hole is worn Replace the worn There is noise of beating Crankshaft main bearing is worn Replace Piston ring is broken... -
Page 41: Specifications
SPECIFICATIONS Ⅰ. Main specification Model 2V77F 2V77F-A 2V78F Items Engine type V-shaped, double-cylinder, 4- stroke, forced air-cooled, OHV Bore × Stroke (mm) 77mm×66mm 78mm×67mm Displacement 614ml 640ml 8.3 ：1 8.5 ：1 Compression Ratio 12.5kW(17PS)/3600rpm 13kW(17PS)/3600rpm Max power output Recommend power using 12kW(16.3PS)/3600rpm... -
Page 42: Ⅱ. Torque Of Important Bolts
DATA RELATING ADJUSTMENT Item Data Spark plug clearance 0.7∽0.8mm Carburetor Idling 1500±150rpm Valve clearance (cold engine) Intake：0.15±0.02 Exhaust：0.20±0.02 Technical data vary with type of engine, therefore, they are subject to change without notice. NOISE TESTING DATA Measure according to ISO 8528-10, EN ISO 3744, European Directive 2000/14/EC and the noise was tested. Max. -
Page 43: Ⅲ. Fitting Clearance And Wear Limit
Ⅲ. Fitting clearance and wear limit Name Normal value mm) Wear limit (mm) Bore 77.02 77.19 Outer dia. of piston skirt 76.97 76.62 Clearance between piston and cylinder 0.035~0.06 0.12 Dia. of piston pin hole 18.017 18.052 Outer dia. of piston pin 17.982 Clearance between piston pin and hole 0.006~0.035... -
Page 44: Electric Diagram
ELECTRIC DIAGRAM...
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Questions and answers
how many horse power
The horsepower of the LIFAN Power USA 2V77F is 17 PS (approximately 16.7 HP) at 3600 rpm.
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