Eton ATV8F - SERVICE User manual

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VECTOR 300
Service Manual

Contents
1. INFORMATION
1-1 Safety
1-2 Notes
1-3 Engine Specifications
1-4 Serial Number
1-5 Torque Values
1-6 Special Tools
2. MAINTENANCE
2-1 Maintenance Data
2-2 Maintenance Schedule
2-3 Fuel Tube
2-4 Throttle Operation
2-5 Throttle Cable Adjustment
2-6 Air Cleaner
2-7 Spark Plug
2-8 Idle Speed
2-9 Drive Chain
2-10 Brake System
2-11 Wheels And Tires
2-12 Steering Shaft Holder Bushing
2-13 Toe-In
3. ENGINE REMOVE AND INSTALLATION
3-1 General Information
3-2 Engine Removal
3-3 Engine Installation
4. LUBRICATION SYSTEM
4-1 Mechanism Diagram
4-2 Precautions In Operation
4-3 Troubleshooting
4-4 Engine Oil
4-5 Engine Oil Strainer Clean
4-6 Oil Pump
4-7 Gear Oil
5. FUEL SYSTEM
5-1 Mechanism Diagram
5-2 Precautions In Operation
5-3 Trouble Diagnosis
5-4 Carburetor Remove / Install
5-5 Air Cut-Off Valve
5-6 Throttle Valve
5-7 Float Chamber
5-8 Adjustment Of Idle Speed
5-9 Fuel Tank
5-10 Air Cleaner

6. CYLINDER HEAD/VALVE
6-1 Mechanism Diagram
6-2 Precautions In Operation
6-3 Troubleshooting
6-4 Cylinder Head Removal
6-5 Cylinder Head Inspection
6-6 Valve Stem Replacement
6-7 Valve Seat Inspection And Service
6-8 Cylinder Head Reassembly
6-9 Cylinder Head Installation
6-10 Valve Clearance Adjustment
7. CYLINDER/PISTON
7-1 Mechanism Diagram
7-2 Precautions In Operation
7-3 Trouble Diagnosis
7-4 Cylinder And Piston Removal
7-5 Piston Ring Installation
7-6 Piston Installation
7-7 Cylinder Installation
8. V-BELT DRIVING SYSTEM
8-1 Mechanism Diagram
8-2 Maintenance Description
8-3 Trouble Diagnosis
8-4 Left Crankcase Cover
8-5 Drive Belt
8-6 Drive Face
8-7 Clutch Outer/Driven Pulley
9. FINAL DRIVING MECHANISM
9-1 Mechanism Diagram - Transmission Cover
9-2 Precautions In Operation
9-3 Trouble Diagnosis
9-4 Disassembly Of Transmission
9-5 Inspection Of Mission Mechanism
9-6 Bearing Replacement
9-7 Re-assembly Of Final Driving Mechanism
10. ALTERNATOR/STARTING CLUTCH
10-1 Mechanism Diagram
10-2 Precautions In Operation
10-3 Right Crankcase Cover Removal
10-4 A.C.G. Set Removal
10-5 Right Cover Bearing
10-6 Flywheel Removal
10-7 Starting Clutch
10-8 Flywheel Installation
10-9 A.C.G. Set Installation
10-10 Right Crankcase Cover Installation

11. CRANKCASE / CRANK
11-1 MechanismDiagram
11-2 GeneralInformation
11-3 Trouble Diagnosis
11-4 DisassemblyOf Crankcase
11-5 CrankshaftInspection
11-6Assembly Of Crankcase
12. COOLING SYSTEM
12-1 Mechanism Diagram
12-2 General Information
12-3 Trouble Diagnosis
12-4 Trouble Diagnosis For Cooling System
12-5 System Test
12-6 Radiator
12-7 Water Pump
12-8 Thermostat
13. STEERING AND SUSPENSION
13-1 Parts Drawing
13-2 Troubleshooting
13-3 Handlebar
13-4 Throttle Housing
13-5 Steering System
14. FRONT WHEEL AND BRAKE SYSTEM
14-1 Parts Drawing
14-2 Troubleshooting
14-3 Front Wheels
14-4 Hydraulic Brake
14-5 Suspension Adjustment
15. REAR WHEEL AND BRAKE SYSTEM
15-1 Parts Drawing
15-2 Troubleshooting
15-3 Remove Rear Wheel And Rear Brake
15-4 Swingarm & Rear Axle Holder
15-5 Suspension Adjustment
16. FENDERS AND EXHAUST PIPE
16-1 Fenders Drawing
16-2 Rear Fenders Removal
16-3 Front Fender Removal
16-4 Exhaust Pipe Removal

17. ELECTRICAL SYSTEM
17-1 Troubleshooting
17-2 Ignition Coil
17-3 Ignition Timing
17-4 Battery Information
17-5 Electric Starter
17-6 Light Bulbs Replacement
17-7 Instrument Pane
18.TROUBLESHOOTING
18-1 Engine Can Not Work
18-2 Poor Performance At Low And Idle Speeds
18-3 Poor Performance At High Speed
18-4 Loss Power
18-5 Poor Handling
17-8 Wiring Diagram

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1. INFORMATION
1-1 Safety
1-2 Notes
1-3 EngineSpecifications
1-4 Serial Number
1-5 Torque Values
1-6 Special Tools
1-1 Safety
GASOLINE
Gasoline is extremely flammable and is explosive under certain condition.
Do not smoke or allow sparks or flames in your work area.
●CARBON MONOXIDE
Never run the engine in a closed area. The exhaust contains poisonous carbon
monoxide gas that may cause loss of consciousness and lead to death.
●BATTERY ELECTROLYTE
The battery electrolyte contains sulfuric acid. Protect your eyes, skin and
clothing. If you contact it, flush thoroughly with water and call a doctor if electrolyte
gets in your eyes.
● HOT PARTS
Engine and exhaust pipe become very hot and remain hot for one hour after the
engine is run. Wear insulated gloves before handling these parts.
● USED ENGINE/GEAR OIL
Used engine oil and gear oil may cause skin disease if repeatedly contact with
the skin for long periods.
Keep out of reach of children.
1-2 Notes
All information, illustrations, directions and specifications included in this publication are base on the latest
product information available at the time of approval for printing.
JI-EE Dynamic Technology Industry Co., Ltd. reserves the right to make changes at any time without notice and
without incurring any obligation whatever.
No part of this publication may be reproduced without written permission.

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1-3 EngineSpecifications
Type 4 Stroke，Single Cylinder, Water cooled
Displacement 287.2c.c.
Bore and Stroke 75 mm x 65 mm
Compression 10.0:1
Maximum Hp 20ps / 6500
Maximum Torque (Nm/rpm) 24.6 Nm / 5000
Carburetor
Ignition DC-CDI
Starting Electric
Lubrication Auto oil injection
Transmission Automatic (C.V.T. V-belt + Reverse)
CHASSIS
Overall Length 1815mm
Overall Width 1062mm
Overall Height 1130mm
Wheel base 1193mm
Ground Clearance 150mm
Dry Weight 225Kg
Fuel Tank Capacity 12L
SUSPENSION
Front DoubleA-Arm & Adjustable
Rear SwingArm & Adjustable Shock
BRAKES
Front Front Hydraulic Disc*2
Rear Rear Hydraulic Disc*1
TIRES
Front 21x7-10
Rear 22x10-10
PRESSURE【psi ( kgf/cm2)】
Front 12(0.8)
Rear 12(0.8)
COLORING
Specifications subject to change without notice.

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1-4 Serial Number
The frame serial number is stamped on the front of the frame.
The engine serial number is stamped on the left side of the crankcase.
Frame serial number

●5 mm bolt and nut 5 N.m (3.5 lbf.ft)
●6 mm bolt and nut 10 N.m (7.2 lbf.ft)
●8 mm bolt and nut 22 N.m (16 lbf.ft)
●10 mm bolt and nut 35 N.m (25 lbf.ft)
●12 mm bolt and nut 55 N.m (40 lbf.ft)
ENGINE
●Cylinder head nut 38 N.m (27.4 lbf.ft)
●Spark plug12 N.m (8.9 lbf.ft)
●Cylinder head bolt 15 N.m (10.1 lbf.ft)
●Alternator bolt 8 N.m (5.9 lbf.ft)
FRAME
●Handlebar upper holder bolt 24 N.m (17.7 lbf.ft)
●Throttle housing cover screw 4 N.m (2.9 lbf.ft)
●Steering shaft nut 50 N.m (36.9 lbf.ft)
●Steering shaft holder bolt 33 N.m (24 lbf.ft)
●Wheel rim bolt 18 N.m (13.3 lbf.ft)
●Tie rod lock nut 35 N.m (25.8 lbf.ft)
●King pin nut 40 N.m (29 lbf.ft)
●Handlebar lower holder nut 40 N.m (29.5 lbf.ft)
●Front wheel bolt 24 N.m (17.7 lbf.ft)
●Front axle castle nut 40-60 N.m (30-45 lbf.ft)
●Front brake arm nut 4 N.m (3.0 lbf.ft)
●Rear brake arm nut 7 N.m (5.2 lbf.ft)
●Rear axle castle nut 40-60 N.m (30-45 lbf.ft)
●Rear wheel bolt 24 N.m (17.7 lbf.ft)
●Exhaust muffler mounting bolt 30 N.m (22.1 lbf.ft)
●Engine hanger bolt 30 N.m ( 22 lbf.ft)
●Rear axle holder bolt 90 N.m (65 lbf.ft)
●Swing arm pivot nut 90 N.m (65 lbf.ft)
●Rear shock absorber mounting nut 45 N.m (33 lbf.ft)
1-5 Torque Values
STANDARD
Nuts, Bolts Tightness
Perform periodical maintenance in accord with the Periodical Maintenance Schedule Check if all
bolts and nuts on the frame are tightened securely.
Check all fixing pins, snap rings, hose clamp, and wire holders for security.

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1-6 Special Tools
For Frame
1. Adjustable Hook Spencer
(E1105-LRA0-FT1)
Purpose: Adjusting of suspension
2. Ball Joint Puller(E0205-LRA0-FT1)
Purpose: Taking out the ball joint from front knuckle as repairing.

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For Engine
1. TACKING ACG FLY WHEEL TOOL
(C1110-RB1-FT1)
2. COUNTER SHIFT IMPLEMENT (I1003-RB1-FT1)
3. ADJUST TAPPET IMPLEMENT
(A4721-HMA-FT1)
4. SLEEVE OF FABRICATING TRANSMISSION
SHAFT & OIL SEAL (I1202-RB1-FT1)

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5. SLEEVE OF FABRICATING L CRANK & OIL
SEAL (I1201-HMA-FT1)
6. TAKING 6205 BRG. TOOL (I6150-6205-FT1)
7. 6205 BRG. KNOCK TOOL (I6150-6205-FT2)
8. L CRANK CASE COVER 6006 BRG. FABRICATING TOOL
(I6150-6006-FT1)

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9. FABRICATING R CRANK CASE COVER 6201
BRG. TOOL (I6140-6201-FT1)
10. TAKING BRG. RB1 TOOL (I6150-RB1-FT1)
11. PNEUMATIC TAKING BRG. 6205 TOOL (I6150-6205-FT3)
12. TAKING TAPPET PIN TOOL (A4451-HMA-FT1)

13. ASSEMBLING DRIVE SHAFT TOOL
(B3411-RB1-FT1)
14. TAKING TRANSMISSION SHAFT BRG. 6305
TOOL (I6100-6305-FT1)
15. KNOCKING BRG.(6901) WATER PUMP IMPLEMENT
(I1001-KJ9-FT1)
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16. KNOCKING WATER PUMP OIL SEAL IMPLEMENT (INSIDE)
(I1205-KF0-FT1 )
17. KNOCKING WATER PUMP OIL SEAL(IRON) IMPLEMENT
(A9217-H9A-FT1)
18. TAKING & LOCKING SPECIAL NUT 36MM SLEEVE
(I0202-HMA-FT1)
19. TAKING & FABRICATING IN. VALVE TOOL
(A4711-HMA-FT1)

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20. TAKING BRG. 62040 LARGE-SIZE TOOL
(I6100-6204-FT3)
21. ALL-PURPOSE FIXER (B2101-HMA-FT1)
22. KNOCKING BRG.(6204) IMPLEMENT
(I6100-6204-FT2)

2-2 Maintenance Schedule 2-9 Drive Chain
2-3 Fuel Tube 2-10 Brake System
2-4 Throttle Operation 2-11 Wheels And Tires
2-5 Throttle Cable Adjustment 2-12 Steering Shaft Holder Bushing
2-6 Air Cleaner 2-13 Toe-In
2-7 Spark Plug
2-1 Maintenance Data
SPECIFICATION
SPARKPLUG
SPARK PLUG GAP 0.8 mm
RECOMMENDED SPARK PLUGS NGK CR8E
THROTTLE LEVER FREE PLAY 5-10 mm
IDLE SPEED 1700±100 rpm
BRAKE LEVER FREE PLAY 15-25 mm
DRIVE CHAIN SLACK 10-25 mm
TOE-IN 5±10 mm
TORQUE VALUES
SPARK PLUG 12-19 N.m
TIE-ROD LOCK NUT 35-43 N.m
ENGINE OIL 1.4 Liter (1.2Liter for change)
GEAR LUBRICATION OIL 750cc (650cc for change)
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2. MAINTENANCE
2-1 Maintenance Data 2-8 Idle Speed

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2-2 Maintenance Schedule
The internal maintenance in the following table is based on average riding, normal conditions.
Riding in unusually dusty areas, require more frequent servicing.
300KM Every Every Every Every Notes
1 Month 3 Months 6 Months 1 Year 2 Years
Fuel Lines I I R
Throttle Operation I I
Air Filter I C R
Fuel Filter R
Spark Plug I I R
Drive Chain I, L Lubricate for every 1 month
Brake Shoes I
Brake System I I
Brake Fluid I R
Nuts, Bolts & Fasteners I
WHEEL/TIRES I I
Wheels I I
Steering System I I
Suspension System I I
C.V.T Drive belt I R
Transmission Oil R Replace for every 3,000km or 6 Months
Engine Oil R Replace for every 3,000km or 6 Months
Battery I I,C I,C
Oil Filter (Screen) C C
Valve Clearance I I
Coolant I I R
Cooling Fan I I
Carburetor (Idle Speed) I I
Choke I
Note – I: Inspect and Clean, Adjust, Lubricate or Replace, if necessary
C: Clean L: Lubricate R: Replace
2-3 Fuel Tube
Inspect the fuel lines for deterioration, damaging or
leakage and replace if necessary.

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2-4 Throttle Operation
Inspect for smooth throttle lever full opening and automatic
full closing in all steering positions.
Inspect if there is no deterioration, damage or kink in the
throttle cable, replace it if necessary.
Check the throttle lever, free play is 5-10 mm at the tip of the
throttle lever.
Disconnect the throttle cable at the upper end.
Lubricate the cable with commercially lubricant to prevent
premature wear.
2-5 Throttle Cable Adjustment
Slide the rubber cap of the adjuster off the throttle
Housing, loosen the lock nut and adjust the free play
of the throttle lever by turning the adjuster on the throttle housing.
Inspect the free play of the throttle lever.
2-6 Air Cleaner
Please remove the four hooks, and then disassemble
two screws inside the air cleaner case.
Pull out the air filter element from the air cleaner case.
Washing the element in non-flammable solvent, squeeze
out the solvent thoroughly.
Let it dry.
Soak the filter element in gear oil and then squeeze
out the excess oil.
Install the every component into air cleaner in the reverse order of
removal.
Note: for more detail please check chapter 5-10
2-7 Spark Plug
This spark plug is located at the front of the engine.
Disconnect the spark plug cap and unscrew the spark plug.
Check the condition of spark plug electrodes wear.
Throttle

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Change a new spark plug if the electrodes and insulator tip appear unusually fouled or burned.
Discard the spark plug if there is apparent wear or if the insulator is cracked or chipped.
The spark plug gap shall keep in 0.8mm
With the sealing washer attached, thread the spark plug in by hand to prevent crosses threading.
Tighten the spark plug with 1.0~1.2kgf-m
2-8 Idle Speed
Connect an engine speed meter.
Warm up the engine, 10 minutes are enough.
Turn the idle-speed adjust screw on the carburetor to obtain the idle speed. “Turn in” (clockwise) will
get higher speed. “Turn out” (counter clockwise) will get lower speed.
IDLE SPEED: 1700±100 rpm
2-9 Drive Chain
Stopping the ATV and shift the transmission into neutral(N) .
Measure the drive chain slack midway between the
sprockets.
Chain slack =15~25mm (5/8~1 inch)
Adjust the chain slack.
Loosen the lock nuts and turn drive chain adjusting nuts
until get the correct slack.
Tighten the axle holder bolts.
Torque = 90N.m (65 lbf.ft)
When the drive chain becomes very dirty, it should be removed, cleaned and lubricated by specify lubricator.
Please use special chain oil to lubricate the drive chain.
Clean the drive chain with kerosene and wipe it dry.
Inspect the drive chain for any possible wearing or damaging.
Replace the chain, if it is worn excessively or damaged.
Inspect the sprocket teeth, if it is excessive wearing or damaging,
please replace it.