CFMoto ATV CF500/CF500-A. Service Manual - part 1

 

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CFMoto ATV CF500/CF500-A. Service Manual - part 1

 

 

 

 
 
 
 
 

CF500/CF500-A 

 

 

 

 

 
 

                           

 

 
 

2006 By Chunfeng Holding Group Co. Ltd. 

 

First Edition,  August 2006 

 

All Rights Reserved 

Any reproduction or unauthorized use of this manual 

without written permission of CFMOTO is 

extremely prohibited 

 
 
 

 

 

FOREWORD                                                              INDEX                                   

This manual contains an introductory description 

of procedures for inspection

maintenance,  

overhaul

disassembly & assembly

removal and 

installation of components and parts, 

troubleshooting and service data together with 

illustrations of our All Terrain Vehicle  Model 

CF500 and CF500-A 

Chapter 1

general service information, tools

vehicle structure and technical data. 

Chapter3:

 key points for inspection and 

adjusting

service guide. 

Chapter 2 and after Chapter 3

disassembly of 

parts and components

installation

overhaul and 

troubleshooting.  

 

The manufacturer reserves the right to make 

improvements or modifications to the 

products without prior notice. Overhaul and 

maintenance should be done according to 

the actual state and condition of the ATV.   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vehicle  

 

Service Information 

Vehicle Body

Muffler 

Inspection & Adjustment 

Cooling System 

Removal and Installation of Engine, Drive 

Train and Gearshift Unit 

Front Wheel, Front Brake, Suspension, 

Steering 

Rear Wheel, Rear Brake, Suspension   

Battery, Charging System 

Ignition System 

Lighting, Instruments & Switches 

10

Circuit Diagram

Wiring Diagram 

11

Troubleshooting  

12

Engine 

 

Engine Overhaul Information 

13

Checks & Maintenance 

14

Engine Removal, Inspection and 

Installation 

15

Carburetor 

16

Cooling and Lubrication System 

17

Electrical System 

18

Troubleshooting 

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Conversion Table 

 
 

Item Example 

Conversion 

Pressure 200Kpa 

(2.00kgf/cm

2

33kpa(250mmHg) 

1kgf/cm

2

=98.0665kpa 1kpa=1000pa 

1mmHg=133.322Pa=0.133322Kps 

Torque 

18N

·

m(1.8kgf-m) 1kgf

·

 m=9.80665N

·

Volume 419ml 

1ml=1cm

3

=1cc 

1l=1000cm

3

 

Force 12N 

(1.2kgf) 

1kgf=9.80665N 

 

 

                                                                                                                                           

  1. Overhaul Information 

Cautions……………………………………  1-1      Tightening Torque……………….1-10  
VIN Number & Engine Number………….…..1-4      Lubricant, Sealing Agent………..1-11   
Main Data Table…………………..………  ..1-5      Cable Routing…………………...1-12 
Overhaul Data Table………………………..…1-6     
                     

 
Cautions  
Safety Cautions 

 
1. Hazardous components in exhaust. Do not run the engine in a enclosed or poorly ventilated 

place for long time.        

2. Do not touch the engine or muffler with bare hands after the engine has just stopped to avoid 

scalding. Wear long-sleeve work clothes and gloves for operation. 

 

3. Battery liquid (dilute sulfuric acid) is highly caustic and may cause burns to skin and eyes. 

Flush with water if splashed to skin and get immediate medical attention. Flush with water if 
splashed to clothes to avoid burns. Keep battery and liquid away from reach of children        

 
4. Coolant is poisonous. Do not drink or splash to skin, eyes or clothes. Flush with plenty of soap 

water if splashed to skin. If splashed into eyes, flush with water and consult the doctor. If 
drinking the coolant, induce vomit and consult the doctor. Keep coolant away from reach of 
children. 

 
5. Wear proper work clothes, cap and boots. If necessary, were dust-glass, gloves and mask.          
 
6. Gasoline is highly flammable. No smoking or fire. Also keep against sparks. Vaporized   

gasoline is also explosive. Operate in a well-ventilated place. 

 
7.  When charged, Battery may generate hydrogen which is explosive. Charge the battery in a 

well-ventilated place.   

                                                           
8. Be careful not to get clamped by the turning parts like wheels and clutch.                          
 
9. When more than two people are operating, keep reminding each other for safety   

purpose. 

 
 
 
                                                                                                                     

Cautions for Disassembling and Assembling 

 

1.    Use genuine CFMOTO parts, lubricants and grease 

2.    Clean the mud, dust before overhauling 

3.    Store the disassembled parts separately in order for correct assemble.           

4.    Replace the disassembled washers, o-rings, piston pin retainer, cotter pin with new ones. 

5.    Elastic retainers might get distorted after disassembled. Do not use the loosened retainers.   

                                                                                                                                                    1-1 

                                                                                                                                           

  1. Overhaul Information 

6.  Clean and blow off the detergent after disassembling the parts. Apply lubricants on the 

surface of moving parts. Measure the data during disassembly for correct assembling. 

7.    If you do not know the length of screws, install the screws one by one and make sure    they 

are screwed in with same depth. 

8.    Pre-tighten the bolts, nuts and screws, then tighten according to the specified torque,   

from big to small and from inner side to outer side. 

9.    Check if the disassembled rubber parts are aged and replace if necessary. Keep the       

rubber parts away from grease. 

10.    Apply or inject recommended lubricant to the specified parts. 

11.    Use special tools wherever necessary.     

12.    Replace the disassembled ball bearings with new ones. 

13.    Turn the inner and outer rings of ball bearing to make sure the bearing will turn      smoothly. 

Replace if the axial or radial play is too big. If the surface is uneven, clean with oil and 

replace if the cleaning does not help. 

When pressing the bearing into the machine or to the shaft, replace the bearing if it could not 

be pressed tight. 

14.  Install the one-side dust-proof bearing in the right direction. When assembling the open 

type or double-side dustproof bearing, install with manufacturer’s mark outward. 

15.    Keep the bearing block still when blowing dry the bearing after washing clean. Apply    

oil or lubricant before assembling.          

16. Install the elastic circlip properly. Turn the circlip after assembling to make sure is has been 

installed into the slot. 

17. After assembling, check if all the tightened parts are properly tightened and can move         

smoothly.                                                             

18. Brake fluid and coolant may damage coating, plastic and rubber parts. Flush these parts with 

water if splashed. 

19. Install oil seal with the side of manufacturer’s mark outward.            

Do not fold or scratch the oil seal lip. Apply grease to the oil seal lip before   

 assembling  

20. When installing pipes, insert the pipe till the end of joint. Fit the pipe clip, if any, into   

the groove. Replace the pipes or hoses that cannot be tightened. 

21. Do not mix mud or dust into engine and/or the hydraulic brake system.         

 

                                                                                                                                              1-2           

                                                                                                                                           

  1. Overhaul Information 

22. Clean the gaskets and washers of the engine casing before assembling. Remove the 

scratches on the joint faces by polishing evenly with an oilstone. 

23. Do not twist or bend the cables too much. Distorted or damaged cables may cause poor   

operation. 

24. When assembling the parts of protection caps, insert the caps to the grooves, if any. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1- 3 

 

                                                                                                                                           

  1. Overhaul Information 

VIN Number and Engine Number 

Vehicle Identification Number: LCELDTS~ 

Engine Number: CF188~ 

 

     

1- 4 

                                                                                                                                           

  1. Overhaul Information 

Main Data Table 

Item Parameter 

Model CF500/CF500-A 

Length 2120mm/2320mm 
Width 1170mm 
Height 1230mm 
Wheel base 

1290mm/1490mm 

Engine type 

CF188 

Displacement 493ml 
Fuel type 

Unleaded gasoline 90 Octane or 
above 

Dry weight 

337Kg/340Kg 

Number 

of 

Passengers 

1 for CF500, 2 for CF500-A 
(including driver) 

Max. Load 

150kg/225Kg 

Front  

25x8-12 

Tire  

Rear  

25x10-12 

Ground Clearance 

275mm 

Min. turning diameter 

4.5m/4.8m 

Starting 

Electrical starting/Recoil starting 

Engine 

type 

Single cylinder, 4-stroke, 
Liquid-cooled, 4 valves, OHC 

Combustion chamber type 

Triangle 

Valve Driving type 

SOHC chain driving 

Bore x stroke 

87.5mm X 82.0mm 

Compression Ratio 

10.2:1 

Max. power   

24Kw/7000 rpm 

Max. torque 

36N.M/5500 rpm 

Lubrication type 

Pressure & Splash 

Oil pump type 

Rotor 

Oil filter type 

Full flow filter screen 

Engine 

Cooling type 

Closed coolant circulation 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

1-5 

                                                                                                                                           

  1. Overhaul Information 

 

 
 

 

 
 
 
 
 
 
 
 
 
 
 
 

1- 6 

Item Parameter 

Air Filter type 

Sponge element filter 

Type 

Vacuum Diaphragm type 
MIKUNI BSR36-89 

Fuel 

device   Carburetor 

Diameter of mixing 
valve 

36mm 

Type Wet, 

auto-centrifugal 

Clutch 

Operation mode 

Automatic (CVT) + Parking & 
Gear shifting 

Gear type 

Bevel gear 

Initial Transmission 

Reduction ratio 

2.938 

Gear type 

Bevel Gear   

Secondary 
transmission 

Reduction ratio 

2.938 

Type 

Automatic (CVT) + Parking & 
Gear shifting 

Function Auto-centrifugal 
Transmission ratio 

2.88~0.70 

Final Ratio 1.333 (24/18, bevel gear) 
Secondary 
Ratio 

1.952 (41/21) 

Gears 

Low Gear: 2.25 (36/16), High 
Gear: 1.35(27/20), Reverse 
Gear: 3.828 

Gearing 

Gearbox 

Gear 
 
Ratio 

Total 

Low Gear: 5.857, High Gear: 
3.514, Reverse Gear: 3.828 

Right 30

 

Steering 
device 

Steering angle 

Left 30

 

Front Hydraulic 

Disc 

Brake type 

Rear Hydraulic 

Disc 

Bumper 
Device 

Suspension  

Swing Arm 

Frame 
type 

 

 

Welded steel tube and plate 

                                                                                                                                           

  1. Overhaul Information 

Overhaul Datasheet 

 

Lubricating device 

Item 

Standard Service 

limit 

Volume when replacing 

1900m

l

 

 

Engine Oil 
Capacity 
 

Full capacity 

12200 m

l

 

 

Recommended Oil (see original) 

 

Specially for 4-stroke 

motorcycle 

SAE-10W-40

20W-50 

 

Substitutes must be used in the 
following range. 
 

API type: SE or SF grade 

 

SAE type: Choose from the left 

chart according to the 
environmental temperature

 

 

Gap between inner 
and outer rotors 

0.07~0.15mm 0.20mm 

Gap between outer 
rotor and body 

0.07

0.17mm 

0.25mm 

Oil pump 
Rotor 
 

End face gap 

0.05

0.10mm 

0.12mm 

 
 

Fuel Device 

Item Standard 

Fuel Tank Capacity 

Full capacity 

19.0

l

 

Type MIKUNI 

BSR36-89 

Main jet 

N102221-130# 

Idle jet 

N224103-22.5# 

 
 
Carburetor 

Idle speed 

1300

±

100r/min 

 

Cooling Device 

Item Standard 

Full Capacity 

1140m

l

 

Reservoir tank capacity   

340m

l

 

Coolant 

capacity 

Standard density 

30% 

Opening pressure of radiator cap 

108kpa(1.1kgf/cm

2

Temperature / valve open 

72

±

2C

 

Temperature/valve full open 

88 C

 

 
Thermostat 

Overall lift 

3.5-4.5mm 

                                                                                                                                                1-7 

                                                                                                                                           

  1. Overhaul Information 

Front Wheel 

Item Standard 

Service 

Limit 

Vertical 1.0mm  2.0mm 

Play of wheel rim 

Horizontal 1.0mm  2.0mm 

Groove --  3.0mm 

Front 

Wheel 

Tire 

Pressure 35kpa(0.35kgf/cm

3

) -- 

 

 

Rear Wheel 

Item Standard 

Service 

Limit 

Vertical 1.0mm  2.0mm 

Play of wheel rim 

Horizontal 1.0mm  2.0mm 

Groove --  3.0mm 

Rear 

wheel 

Tire 

Pressure 35kpa(0.35kgf/cm

3

) -- 

 

Brake System 

Item Standard 

Service 

Limit 

Brake lever play 

0mm 

-- 

Front brake 

Brake disc thickness 

3.5mm 

4mm 

Brake lever play 

5-10mm 

-- 

Brake Pedal Play 

0mm 

 

Rear brake 

Brake disc thickness 

7.5mm 

6.5mm 

 
 

Battery

Charging System 

Item  

Standard  

Model   

Permanent magnet AC type 

Output  

3- phase AC 

AC magneto Motor 

Charging coil Resistance (20

0.2-0.3

 

Rectifier 

 

Three-phase annular rectification, Silicon controlled 

parallel-connected regulated voltage 

Capacity  

12V18Ah 

Fully charged 

12.8V 

Terminal 

point 

voltage 

Insufficient charge 

<11.8V 

Standard 0.9A/5~10H 

Battery 

Charging 

current/time 

Quick  

4A/1H 

 

Ignition system 

Item  

Standard 

Ignition  

CDI ignition  

Type DPR7EA-9(NGK) 

Optional DR8EA, 

D7RTC 

Spark Plug 

Spark plug gap 

0.8-0.9mm 

Ignition timing   

Max. advanced angle 

32

°

CA 

Ignition coil   

Above 200V 

Peak voltage   

Pulse generator 

150V 

                                                                                                               

                                      1-8 

                                                                                                                                           

  1. Overhaul Information 

Light

Instrument 

Switch

Pickup coil 

 

Item  

Standard 

Main 20A 

Fuse  

Auxiliary 

10A   15Ax3 

Head light 

Hi/Lo

 

12V-35W/35W 

Brake light/tail light 

12V-21W/5W 

Turning light 

12V-10Wx4 

Dashboard indicator light   

12V-1.7W 

Light

 Bulb 

Other  indicators 

12V -3.4W 

 

   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

                                                                                                                     

            1-9 

                                                                                                                                           

  1. Overhaul Information 

Tightening torque 

Item 

Torque N·m(kgf·m) 

Item 

Torque N·m(kgf·m) 

5mm Bolt, nut   

5(0.5) 

5mm Screw   

4(0.4) 

6mm Bolt, nut   

10(1.0) 

6mm Screw   

9(0.9) 

8mm Bolt, nut   

22(2.2) 

6mmSH Bolt with flange,   

10(1.0) 

10mm Bolt, nut   

34(3.5) 

6mm Bolt with flange, nut     

12(1.2) 

12mm Bolt, nut   

54(5.5) 

8mm Bolt with flange, nut     

26(2.7) 

 

10mm Bolt with flange, nut     

39(4.0) 

For others not listed in the chart, refer to the standard tightening torque. 
Notes: 1.Apply some engine oil on the part of screw thread and contact surface

.   

Item 

Thread Dia. 

(mm) 

Quantity Torque 

N·m(kgf·m) 

Front Upper Bolt, Engine                            

M8x60                    1 

     35~45   

Rear Upper Bolt, Engine   

M10x1.25x110 

40~50 

Front Upper Bolt, Engine Bracket 

M8x14 

35~45 

Rear Upper Bolt, Engine Bracket 

M8x14 

35~45 

Lower Mounting Bold, Engine 

M12x1.25x140 

50~60 

Bolt, Swing Arm 

M10x1.25x70 

16 

40~50 

Bolt, Rear Absorber 

M10x1.25x50 

40~50 

Bolt, Front Absorber 

M10x1.25x50 

40~50 

Bolt, Rear Wheel Support 

M10x1.25x100 

40~50 

Mounting Nut, Rim 

901-07.00.02 M20 

16 

50~60 

Nut, Rim Shaft 

901-07.00.03 M10 

110~130 

Mounting Screw, Rear Brake Pump   

M6x25 

18~22 

Bolt, Rear Brake Caliper 

M10x1.25x20 

40~50 

Bolt, Front Brake Disc 

901-08.00.03 M8 

25~30 

Bolt, Front Brake Caliper 

M8x14 

35~45 

Bolt, Handlebar 

M8x55 

20~30 

Nut, Tie-rod 

M10x1.25 

40~50 

Locknut, Steering Stem 

M14x1.5 

100~120 

Rear Mounting Bolt, Muffler 

M8x30 

30~50 

Bolt, Exhaust Pipe 

M8x14 

30~35 

Mounting Bolt, Muffler 

M8x40 

30~35 

Mounting Bolt, Rear Axle 

M10x1.25x110 

40~50 

Mounting Bolt, Front Axle 

M10x1.25x90 

40~50 

Mounting Bolt, Front Axle 

M10x1.25x25 

40~50 

Bolt, Front Axle Support 

M8x14 

35~45 

Bolt, Rear Transmission Shaft Rear End 

901-30.00.01 

40~50 

Bolt, Rear Transmission Shaft Front End 

901-29.00.01 

35~45 

Bolt, Front Transmission Shaft 

901-29.00.01 

35~45 

Thermoswitch CF250T-420500 

28~30 

Bolt 1, Front Rack 

M8x14 

35~45 

Bolt 2, Front Rack 

M6x12 

25~30 

Bolt, Rear Rack 

M8x14 

35x45 

1- 10 

                                                                                                                                           

  1. Overhaul Information 

Lubricant, Sealing Agent 

Application Areas 

   Cautions 

  Lubricants & Grease 

Oil Seal Lip, Steering Stem 

Pivot, Rear Brake Pedal 

Joints, Throttle Cable 

Throttle Lever 

 

Multi-purpose Lubricating 

Grease 

Dust-proof Seal Lip, Front 

Shock absorber 

 

#5 Absorber Oil 

Inner surface, Handlebar 

 

Engine Oil 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

                                                                                                                                                      1-11 

                                                                                                                                           

  1. Overhaul Information 

Cable Routing 

 

         

       

 
1.  Connector, Fan Motor     2. Connector, CDI    1. Ignition Coil       2. Water Temperature Sensor 
3.    CDI                                          4. Wire Clip              3. Cable, Parking    4. Breather Hose, Reservoir Tank

 

5.  Connector, Starting Switch                     5. Vacuum Tube     6. Wire Clip 
6.  Connector, Dashboard                            7. Connector for Magneto, Gear Sensor and Pickup Coil

 

7.  Connector, Handlebar Switch (L&H)             8. Fuel Pipe, Carburetor 
8.  Connector, Ignition Switch                      9. Wire, Starting Motor      

 

9.  Wire Clip                                                                        10. Steel Wire Clip 
                                                                                                                                                                       

 1-12 

                                                                                                                                           

  1. Overhaul Information 

 
 
 

 

 
 
 
 
 

 

 

 
 
 
 
 
 
 
 
 
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