LONCIN G120F Install guide

G120F/G160F/G200FContents
- 1 -
G120F G160F G200F
Shop manual
LoncinMotorCo., LTD

G120F/G160F/G200FContents
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Contents
PartIspecifications 3
1-1Introduction 3
1-2Productparameters 4
1-3Dimensions(boundaryandmounting dimensions) 6
1-4PTO assemblydrawing 8
1-5Wiringdiagrams 10
PartIIDescriptionofmaintenance 12
2-1Safetyprecautions 12
2-2Maintenance standards 14
2-3Torquevalues 16
2-4Troubleshooting 17
PartIIIMaintenance 22
3-1Maintenance schedule 22
3-2Engineoil 23
3-3Oil alertsysteminspection 24
3-4Aircleaner 25
3-5Muffler 26
3-6Fuel filteringsystem 27
3-7Sparkplug 28
3-8Carburetor(idlespeed) 29
3-9Valveclearance 29
3-10 Governor 30
PartIVDisassemblyandmaintenance 31
4-1Aircleanerandmuffler 31

G120F/G160F/G200FContents
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4-2Starterandcontrolbox 33
4-3Carburetor 37
4-4Fuel tankandspeedgoverningsystem 39
4-5Flywheel, ignitioncoil, startermotorandlightingcoil 40
4-6Cylinderheadandvalves 44
4-7Crankcase body, piston, connectingrod andcrankshaft 50
4-8Governinggearandfuel level switch 58
4-9Reductionsystem 60
4-10 Battery 63

G120F/G160F/G200FPartI specifications
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1-1 Introduction
Aircleaner—protectstheenginethrough
removing dustand otherimpurities intheair.
Sparkplug—deliversthehigh voltageofthe
ignition coil intotheengine’scombustion
chamber, and produces sparksbyelectric
dischargebetweenelectrodes, toignitethe
fuel-airmixture.
Muffler—preventstheenginenoise from
traveling, soas tolowernoise oftheexhaust
system.
Fuel cock—aswitchinthefuel linetocontrol
thefuel flowinthefuel line.
Recoil starter—serves tostarttheengine
Choke lever—closes thechoke before
engine’scoldstarting, and thecarburetorwill
deliveraveryrichmixturetolettheenginebe
easilystartable. Whentheenginehas warmed
up, thechoke levershall befullyopened.
Engineswitch—beforestarting theengine,the
switchshall beputintheONposition;ifyou
puttheswitchintheOFFposition theengine
will beshutdown
Throttlelever—serves toadjusttheengine
speed, soastoobtainthepowerand speed
you want.
Fuel tankcap—whenloosened, fuel canbe
addedintothefuel tank;whentightened, fuel
canbesealedinthefuel tank.
Fuel tank—stores thefuel and deliversfuel to
thecarburetor.
Oil drainplug—whenloosened, all engineoil
intheenginecanbedrainedoff sothatengine
oil canbechanged
1-1.Introduction 1-2. Productparameters 1-3. Dimensions(boundaryand
mounting dimensions) 1-4. PTO assemblydrawing 1-5. Wiring diagrams
Startergrip
Muffler
Sparkplug
Engineswitch
Aircleaner
Choke lever
Recoil starter
Fuel cock
Throttlelever
Oil drainplug
Fuel tank
Fuel tankcap

G120F/G160F/G200FPartI specifications
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1-2Productparameters
Engine model G120F G160F/ G160FD G200F/ G200FD
Engine type Singlecylinder, 4-Stroke, Forced AirCooling, OHV25°
Net power(KW/3600rpm) 2.6 3.6 4.1
Net torque (N m/rpm) 7.3/2500 9.9/2500 12.4/2500
Bore×stroke(mm) 60×42 68×45 68×54
Displacement (cc) 118 163 196
Compression ratio 8.5:1 8.5:1 8.5:1
Engine oil capacity(L) 0.6 0.6 0.6
Fuelconsumption rate
(g/KW.h) ≤395
Engine oil consumption rate
(g/KW.h) ≤6.8
Idlespeed (r/min) 1400±150
Noise(≤7m) 70dBA
Startingmode Recoil Recoil /Electric
Noise(≤7m) 70dBA
Lubrication mode Splash
Coolingsystem Forced aircooling
Stoppingmode Grounding
Fuel Unleaded gasolineforvehicles
PTO shaft rotation Counterclockwise(seen fromthe end ofoutput shaft)
Ignition system T.C.I.
Ignition timing 25°BTDC (fixed)
Aircleanertype Semi-dry, oil bath, foamfilter
Carburetor Horizontalbutterflyvalve
Boundarydimension
(L.W.H) 305×341×318 312×362×335 312×362×335
Dryweight (kg) 13 15(18) 16(19)

G120F/G160F/G200FPartI specifications
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Engine model G160F(D)-B G200F(D)-B G160F(D)-C G200F(D)-C
Engine type Singlecylinder, 4-Stroke, Forced AirCooling, OHV25°
Net power(KW/4000rpm) 3.6 4.1 3.6 4.1
Net torque (N m/rpm) 19.8/1250 24.8/1250 19.5/1250 24.8/1250
Poweroutputmode Clutch Chain
Reduction ratio 21
Bore×stroke(mm) 68×45 68×54 68×45 68×54
Displacement (cc) 163 196 163 196
Compression ratio 8.5:1 8.5:1 8.5:1 8.5:1
Engine oil capacity(L) 0.6 0.6 0.6 0.6
Fuelconsumption rate
(g/KW.h) ≤395 ≤395 ≤395 ≤395
Engine oil consumption rate
(g/KW.h) ≤6.8
Idlespeed (r/min) 1400±150
Noise(≤7m) 70dBA
Startingmode Recoil /Electric
Lubrication mode Forced splash
Coolingsystem Forced aircooling
Stoppingmode Grounding
Fuel Unleaded gasolineforvehicles
PTO shaft rotation Counterclockwise(seen fromthe end ofoutput shaft)
Ignition system T.C.I.
Ignition timing 25°BTDC (fixed) 25°BTDC (fixed)
Aircleaner Paperand foamfilters
Carburetor Horizontalbutterflyvalve
Boundarydimension
(L.W.H) 391×362×335 391×376×335 342×362×335 342×376×335
Dryweight（kg）19（22）20（23）15.5（18.5）16.5（19.5）

G120F/G160F/G200FPartI specifications
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1-3Dimensions(boundaryandmountingdimensions)
G120F

G120F/G160F/G200FPartI specifications
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G160F/G200F

G120F/G160F/G200FPartI specifications
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1-4PTOassemblydrawing
G120F/G160F/G200F
ATypeCType
RTypeDType
Tocrankcase
c
over
mount
surface
Tocrankcase
c
over
mount
surface
Tocrankcase
c
over
mount
surface
Tocrankcase
c
over
mount
surface

G120F/G160F/G200FPartI specifications
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ETypeSType
UTypeA22 Type
Tocrankcase
c
over
mount
surface
Tocrankcase
c
over
mount
surface
Tocrankcase
c
over
mount
surface
Tocrankcase
c
over
mount
surface