Lifan M27VTE User manual

OWNER?S MANUAL
GASOLINE ENGINE
2V78F-2 2V7gF-2D
M27VTE (2V78F-3)

PREFACE
Thank you for choosing the general gasoline engine produced by our company.
Based on the latest technology domestic and abroad, our Company, has individually developed general gasoline
engine 2V78F-2 and,2Y78F-2D with 4-stroke, V-shaped cylinder, forced-air cooling. The engine is characterized by
advanced design, compact structure, reliable performance, convenient maintain, econornic use, easy speed goveming
etc. It is widely used as ideal power in many fields such as generator, construction, field working, forestry machine, etc.
The main hardware, such as crankcase, crankcase cover, cylinder all use aluminum alloy. Because of the using of
automatic decompression mechanism and centrifugal flyweight speed govemor, the starting is very convenient and
reliable. Other type use level sensitive protection system, avoiding the suddenly damage caused by bad lubrication.
The manual gives information about the operation and maintenance of gasoline engine 2V78F-2 and2Y78F-2D.
2V78F-2 is started by electricity while 2V78F-2D 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. We have maintaining place on local place, it will supply offer you the service.
This manual should be considered a permanent part of the engine and should remain with it if it is resold.
All the materials and diagrams of this manual are in accordance with the newest products at the publishing time.
Due to revision and other change, the information descried in this manual may be a little different from the actual status.
The manual is subject to change without notice.
The copyright of this manual belongs to our Co, any group or individual is forbidden to reprint or copy any it.

IMPORTANT NOTICES a:
Please pay special attention to statements preceded by the following words:
WARNING
O 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
O A caution is used to alert the user to fact that hazardous operation and maintenance procedures may result in
injury to personnel or destruction of equipment if not shictly observed.
NOTE
O Give helpful information.
i
This manual should be considered as a perïnanent part of the unit and should remain with the unit when resold.
2

CONTENTS
6
BÀTTERY CONNECTION(electric-start type) 7
CONTROL CONNECTTON OF REMOTE DISTANCE (OPTION)... .....:......................9
PRE.OPERATE INSPECTION
III. Fuel and fuel tank....
STARTING THE ENGINE
RUNNING THE ENGINE.................
I . Engine oil alarm
II .Breaker
STOP
MAINTENANCE
L Maintenance schedule
II . Maintenance method
TRANSPORT, STORAGE AND REMOVAL FROM STORAGE.. .'.............................
l3
l4
t6
t6
t7
18
t9
2t
2t
22
3t
-t -t
3
TROUBLESHOOTING.

II . Low gasoline engine power output
IIL Gasoline engine cannot run smoothly
V. Gasoline engine is excessively hot
VI. There exists abnormal noise when engine running.........
SPECIFICATIONS
L Main specification.
II . Torque of important bolts..........
IiL Fitting clearance and wear limit
ELECTRIC DIAGRAM
JJ
35
36
5t
38
39
40
40
4t
42
.43
4

SAFETY PRECAUTIONS
WARNING:
Before operating the engine, be sure to read and familiar with the nianuat carefully, otherwise personal
injury or equipment damage may occur.
Please pay special attention to the following:
l. 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. This engine should not be used underground.
3. This engine should not be used in areas where explosive conditions are present.
4. Keep the engine out ofreach ofchildren and pets to avoid accidents.
5. Operator of the engine has been specially trained.
6. Refuel in a well-ventilated area with the engine stopped, and in places refueling or stodng gasoline, no smoking and
any flames or sparks.
7. Refuel the fuel tank not too full so as to avoid fuel's spilling out. If there is spilled fuel around, be sure to clean it
thoroughly before starting.
8. Locate the engine on a level-working platform to avoid fuel's spilling out.
9. Maker sure the fuel filler cap is tightened securely.
10. The exhaust muffler is very hot during running the engine even after the engine stops. Never touch it, or you may
get burns. Transport or store the engine with it cooling down entirely
I 1. This machine should not be used underground or in areas where explosive conditions may be present.
12. It's recommended that the operator wears the ear protection equipment during operation.
5
5

PARTS DESCRIPTION
Air cner Muffle
Throttle r
Ring su port hoke knob oir lug
p
Spark plug
Oil-filte Dipstick
Drain plug Starter ndle
Fig. I
6

BATTERY CONNECTION(electric-start type)
In the case that the specifications of the battery are l2Y and more than 36A.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.
Make sure the battery leads are connected tightly
and no corosion. If any, eliminate it.
Start
Positive lead (lead G)
To housing
Fig.2
WARNING:
o The battery may give off explosive gas, keep sparks, flames and cigarettes away. Charge or use it in an
area with good ventilation.
o The battery contains sulfuric acid (electrotyte). Contact with skin or eyes may cause seYere burns. Wear
protective clothing and a face shield. If electrolyte gets in your skin, flush with waterl if gets in your eyes, flush
with water for at least 15 minutes and call a physician at once.
o Electrolyte is poisonous. If swallowed, drink large quantities of water or milk, and follow with milk of
magnesia or vegetable oil and call a physician.
o Keep out ofreach ofchildren.
7

CAUTION:,
o Do not add tap water to the battery instead of distilled water, or the battery life will be shortened.
o Do not add distilled water over electrolyte upper level mark, or electrolyfe will spill out to corrupt the
engine parts. If so, be sure to wash them away with water.
o Make sure not to connect the battery leads in reverse order, or short-circuit or breaker's cutting may
occur.
8
8

CONTROL CONNECTION OF REMOTE DTSTANCE (OPTTON)
Throttle and choke levers are desigrred with holes for optional cable accessories.
I . The diagram shows the installation method of single shand cable and woven ca-ble.
a) Remote-controlled choke valve and Remote-controlled throttle valve.
L5xl6E(2)
t5x 16u(2)
Gable cllp(2) Cable cllp (2)
cable Choke cable cllp (2)
Control Lsver 14xtu(2)
cablc Throttle
Cllp tl4x0m(2) Control Laver
Woven cable I Lefi ControlType Woven cable / Right Control Type .
Fig.3
9

b) Remotely -controlled throttle valve and Manually-conholled choke valve
Choke Ctrote rrandl#S x 16mm Cable clip
Rod link bush Fig.4
LEver
c) Manually-controlled throttle valve and Manually-controlled choke valve
M5x18mm (2)
Cable cllp (2)
Chokc ceblc Stccl-wlrc Cllp (2)
Fig. 5
Throttle
Control Lcver
Single strand cable / Right Control Type
2. Put the levers ofboth the choke and throttle on the controlled pedestal.
l0

PRE,.OPERATE INSPECTION
I . Engine oil
CAUTION:
o 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.
o Check the engine when it on a level ground.
Recommended engine oil: SAEI0W-30
As viscosity varies with regions and temperatures, so the lubricant
has to be selected in accordance with our recommendation.
CAUTION:
Use cleanser-free oil or two-stroke engine oil will shorten the machine's life.
Oll plug
SAE
Têmperature .r0 .lN .r0 0 1o m l0 to'c
Envlronment Tèmperaturo
Fig.6
Upper llmlt
Lower llmit
Check steps:
I ) Ensure that the engine is stops on a level ground.
2 ) Remove the dipstick (Fig.7) and clean it.
3 )Reinsert the dipstick into the oil f,rller without screwing it,
and check oil height.
Dipstick
l1
Fig.7

4) if the oil level is too low, fill the recommended oil to thê 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. s), and check its filter element, make sure it clean and intact. otherwise clean
or replace it. Foam filter €lemènt
Air cleaner
lron Peper 6lement
Fig.8
l2
Air housing

CAUTION:
l. 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.
Never apply used or polluted gasoline or a mixture of gasoline with engine oil. Make sure the fuel is free of dirt
and water
13

STARTING'THE ENGINE
CAUTION:
PPE devices (ear protection, gloves) should be used before start the engin_e.
1. Pushthe fuelcockto "ON". (Fig.9) (Option)
ON knob
Fuel cock
Fig.9 Fig.10
2. Push the choke lever to " CLOSE ". (Fig.10) "
3. Push the throttle to "FAST" slowly.
4. Start the engine as follows:
a). Hand-operated kick-starter
Pull slightly the starting rope handle up until feeling anti-action, and then
make a rapid pull.
CAUTION:
Releasing the handle suddenly may make it hitting the engine. Release
the handle slowly conforming with its recoiling force.
Throttle lever
Fig.l l
14
Fig.l2 Starter rope handle

b) Elechic starter
Push the engine switch to "START" and keep 5 seconds to make it start.
Start
OFF STAFT
Engine swtich
Fig.l3
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. Once engine starts, push the engine switch to "ON".
t5

RUNNING THE ENGINE
l. If the engine stars when the choke knob "CLOSE", please push it to "ON" immediately after the engine runs
smoothly. '-:
Ghoke knob
OPE Throttle lever
Fig. 15Fig. 14
2. Set the throttle lever in proper position to ensure the engine runs at required velocity
:
I . Engine oil alarm
The engine oil alarm is designed to function when the engine oil in the crankcase is iirsufficient. Lack of engine oil
may damage the engine. Once oil level in the crankcase is too low, the engine oil alarm will stop the engine
automatically to make it free of damage while the engine switch is still at 'oON ".
t6

CAUTION: '
Ifcannot restart the engine, check the engine oil level fïrst before go to other check items.
II . Current protector
The reset button in the protector will pop up when the circuit is disconnected. If this happens, first find out the
cause of the problem and eliminate it, and then press the reset button to restore the protector.
III. 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, besides, too big mixture ratio will pollute the spark plug and result in starting the
engine difficultly. This problem can be solved by amending the carburetor technological status. If always using on
highlands with at 1800 meters above sea level, ask your dealer for help.
However, the engine power will decrease by about 3.5% wibh every 305 meters up in height.
CAUTION:
Amended engine applicable to highlands may be damaged seriously in area below altitude of 1800 meters for
overheating, because its mixture ratio is too small for operation in low altitude area. In the.case, ask your dealer to
recover the engine to its normal technical status.
t'7

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.l7) .
3. Set the fuel cock to " oFF ". (Fig.18 ) . (Option)
Engine swtich
OFF Fuel cock
Slow
Throttle lever
Fig. 16 Ktz OFF
Fig. 18
CAUTION:
Never sudden stopping at high speed with heavy load is, otherwise it will damage the engine.
7
Ç
18

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 inhoducing
poor-fuel carburetors and other devices into the engine to solve the problem.
To meet the exhaust with in the standard exhaust emission, pay attention to the following:
l.Maintenance
Maintain the engine periodically in accordance with the maintenance schedule in the manual. The maintenance
schedule is made out on the base of normal use in normal conditions, if using under heavy load, dusty or wet
circumstances or in high temperature, service of the engine should be done more often.
2.Replacement of parts
We recommend that you should choose the parts which are manufactured by our company or equivalent to these in
quality as replacement ones. Replacement without so high quality as the originalmay impair the exhaust control system
in effectiveness.
3.Modifying
Modifuing the exhaust control system may make actual exhaust emissions exceeding statutory limit values' Illegal
modification as such:
19