CFMoto motorcycle CF650NK. Service Manual - part 27

WHEELS/TIRES 10-12

Balance Weight

Number

Weight

1

10g (0.35oz.)

2

20g (0.71oz.)

3

30g (1.06oz.)

NOTE

○

 

Balance weights are available from cfmoto 

   dealers in 10, 20, and 30 grams (0.35, 0.71, and 
   1.06 oz.) sizes.
   An imbalance of less than 10 grams (0.35 oz.) 
    will not usually   affect running stability.

○

 

Do not use four or more balance weight (more  

   than 90gram, 3.17 oz.).  If the wheel requires an 
   excess balance weight, disassemble the wheel to 
   

fi

 nd the cause.

●

 Slip the balance weight [A] onto the rib [B] by 

    pushing or lightly hammering [C] the clip [D].

    Left Side [E] Right Side [F]

●

  Be sure to install the balance weight.

○

  Check that the blade [A] and clip [B] are fully 

   seated on the rim [C] and that the clip is hooked 
    over the rib [D].

    Left Side [E]
    Right Side [F]

WHEELS/TIRES 10-13

Air Pressure Inspection/Adjustment

●

 Refer to the Air Pressure Inspection in the 

    Periodic Maintenance chapter.

Tire Inspection

●

 Refer to the Wheel/Tire Damage Inspection in the 

   Periodic Maintenance chapter.

Tire Removal

●

 Remove:

   Wheel (see Front/Rear Wheel Removal)
   Valve Core (Let out the air)

●

 To maintain wheel balance, mark the valve stem 

   position on the tire with chalk so that the tire can 
    be reinstalled in the same position.

   Chalk Mark or Yellow Mark [A] 
   Air Valve [B]
   Align [C]

●

 Lubricate the tire beads and rim 

fl

 anges on both 

   sides with a soap and water solution or rubber 
   lubricant. This helps the tire beads slip off the rim 
   

fl

 anges.

 

CAUTION

Never lubricate with engine oil or petroleum 
distillates because they will deteriorate the 
tire.

●

 Remove the tire from the rim using a suitable 

    commercially available tire changer.

NOTE

○

 

The tires cannot be removed with hand tools 

    because they 

fi

 t the rims too tightly.

Tire Installation

WARNING

Use the same manufacturer’s tires on both 
front and rear wheels.

 

●

 Inspect the rim and tire, and replace them if 

    necessary.

●

 Clean the sealing surfaces of the rim and tire, 

   and smooth the sealing surfaces of the rim with 
    a 

fi

 ne emery cloth if necessary.

●

  Remove the air valve and discard it.

CAUTION

Replace the air valve whenever the tire is 
replaced. Do not reuse the air valve.

!

WHEELS/TIRES 10-14

●

 Install a new valve in the rim.

●

 Remove the valve cap, lubricate the stem seal [A] 

  with a soap and water solution or rubber 
   lubricant, and pull [B] the valve stem through the 
   rim from the inside out until it snaps into place.

CAUTION

Do not use engine oil or petroleum distillates 
to lubricate the stem because they will 
deteriorate the rubber.

○

 The air valve is shown in the 

fi

 gure.

   Valve Cap [A]
   Valve Core [B] 
   Stem Seal [C] 
   Valve Stem [D]
   Valve Seat [E] 
   Valve Opened [F]

●

 Check the tire rotation mark on the front and rear 

   tires and install them on the rim accordingly.
   Tire Rotation Mark [A] Rotating Direction [B]

●

 Position the tire on the rim so that the valve [A] 

  align with the tire balance mark [B] (the chalk   
   mark made during removal, or the yellow paint 
   mark on a new tire).

●

 Install the tire bead over the rim 

fl

 ange using a 

   suitable commercially available tire changer.

●

 Lubricate the tire beads and rim flanges with a 

  soap and water solution or rubber lubricant to 
   help seat the tire beads in the sealing surfaces of 
   the rim while in

fl

 ating the tire.

●

 Center the rim in the tire beads, and in

fl

 ate  the 

   tire with compressed air until the tire beads seat 
   in the sealing surfaces.

WARNING

Be sure to install the valve core whenever 
inflating the tire, and do not inflate the tire 
to more than 400 kPa (4.0 kgf/cm², 57 psi). 
Overinflation can explode the tire with 
possibility of injury and loss of life.

 

!

WHEELS/TIRES 10-15

●  Check  to  see  that  the  rim  lines  [A]  on  both  
   sides of the tire sidewalls are parallel with the  
    rim flanges.
   If the rim flanges and tire sidewall rim lines are  
    not parallel, remove the valve core.
● Lubricate the rim flanges and tire beads.
● Install the valve core and inflate the tire again.
● After the tire beads seat in the rim flanges, check  
   for air leakage.
○

 Inflate the tire slightly above standard inflation.

○

 Use a soap and water solution or submerge the  

   tire, and check for bubbles that would indicate  
    leakage.
● Adjust the air pressure to the specified pressure  
    (see Air  Pressure  Inspection  in  the  Periodic  
   Maintenance chapter).
● Install the air valve cap.
●  Adjust  the  wheel  balance  (see  Balance  
    Adjustment).

Tire Repair

    Currently  two  types  of  repair  for  tubeless  tires 
have  come  into  wide  use.  One  type  is  called  a 
temporary (external) repair which can be carried 
out without removing the tire from the rim, and the 
other  type  is  called  permanent  (internal)  repair 
which requires tire removal.  It is generally under- 
stood that higher running durability is obtained by 
permanent  (internal)  repairs  than  by  temporary 
(external) ones. Also, permanent (internal) repairs 
have  the  advantage  of  permitting  a  thorough 
examination for secondary damage not visible from 
external inspection of the tire.  For these reasons, 
CFMOTO does not recommend temporary (exter- 
nal) repair.  Only appropriate permanent (internal) 
repairs  are  recommended.  Repair  methods  may 
vary slightly from make to make. Follow the repair 
methods  indicated  by  the  manufacturer  of  the 
repair tools and materials so that safe results can 
be obtained.

WHEELS/TIRES 10-16

Hub Bearing Removal

●

 Remove the wheel (see Front/Rear Wheel 

   Removal), and take out the following.
   Collars Coupling (Out of rear hub) Grease Seals

●

 Use the bearing remover to remove the hub 

   bearings [A].

CAUTION

Do not lay the wheel on the ground with the 
disc facing down.  This can damage or warp 
the disc. Place wooden blocks under the 
wheel so that the disc does not touch the 
ground.

Special Tools – 
Bearing  Remover  Head, 20 ×22  [B]
Bearing   Remover   Shaft, 13  [C]

Hub Bearing Installation

●

 Before installing the hub bearings, blow any dirt 

  or foreign particles out of the hub with com-
  pressed air to prevent contamination of the 
   bearings.

●

 Replace the bearings with new ones.

NOTE

○

 

Install the bearings so that the marked side faces 

   out.

●

 Install the bearings by using the bearing driver 

   set which does not contact the bearing inner 
    race.

●

 Press in each bearing [A] right until they are 

    bottomed.
   

Special Tool -  Bearing Driver Set [B]

●

 Replace the grease seals with new ones.

●

 Press in the grease seals [A] so that the seal 

    surface is 

fl

 ush [B] with the end of the hole.

●

 Apply high-temperature grease to the grease 

   seal lips.
  Special Tool -  Bearing Driver Set [C]: 57001-
   1129
   

Hub Bearing Inspection

Since the hub bearings are made to extremely 
close tol- erances, the clearance can not normally 
be measured.

NOTE

○

 

Do not remove any bearings for inspection. If 

   any bearings are removed, they will need to be 
    replaced with new ones.

●

 Turn each bearing in the hub back and forth [A]  

    while checking for plays, roughness or binding.
   If bearing play, roughness or binding is found,   
    replace the bearing.

●

 Examine the bearing seal [B] for tears or 

    leakage.

FINAL DRIVE 11-1

Final Drive

Table of Contents

Exploded View.............................................................................................................................

11-2

Speci

fi

 cations..............................................................................................................................

11-4

Special Tools................................................................................................................................

11-5

Drive Chain..................................................................................................................................

11-6

Drive Chain Slack Inspection...................................................................................................

11-6

Drive Chain Slack Adjustment.................................................................................................

11-6

Wheel Alignment Inspection/Adjustment.................................................................................

11-6

Drive Chain Wear Inspection...................................................................................................

11-6

Drive Chain Lubrication...........................................................................................................

11-6

Drive Chain Removal..............................................................................................................

11-6

Drive Chain Installation........................................................................................................... 11-7

Sprocket, Coupling...................................................................................................................... 11-10

Engine Sprocket Removal....................................................................................................... 11-10
Engine Sprocket Installation.................................................................................................... 11-11
Rear Sprocket Removal.......................................................................................................... 11-11
Rear Sprocket Installation....................................................................................................... 11-11
Coupling Installation................................................................................................................ 11-12
Coupling Bearing Removal......................................................................................................  11-12

Coupling Bearing Installation.................................................................................................. 11-12

Coupling Bearing Inspection................................................................................................... 11-13

Coupling Bearing Lubrication.................................................................................................. 11-13
Coupling Damper Inspection................................................................................................... 11-13
Sprocket Wear Inspection....................................................................................................... 11-13
Rear Sprocket Warp Inspection............................................................................................... 11-14

11-2 FINAL DRIVE

Exploded View

FINAL DRIVE 11-3

No.

Fastener

Torque

Remarks

N·m

kgf·m

ft·lb

1

Engine Sprocket Nut

125

12.7

92

MO

2

Rear Axle Nut

108

11.0

80

3

Rear Sprocket Nuts

59

6.0

44

4

Speed Sensor Bolt

7.8

0.80

69in·lb

L

5

Speed Sensor Bracket Bolts

9.8

1.0

87in·lb

G:   Apply grease.

HG:  Apply high-temperature grease. 

HO:  Apply heavy oil.

L:   Apply a non-permanent locking agent. 

MO:  Apply molybdenum disul

fi

 de oil solution.

        (mixture of the engine oil and molybdenum disul

fi

 de grease in a weight ratio 10 :  1) 

R:   Replacement Parts

Exploded View

11-4 FINAL DRIVE

Specifi cations

Item

Standard

Service Limit

Drive Chain

Drive Chain Slack
Drive Chain Wear (20-link Length) 
Standard Chain:

Make

 Type

Link

30~40mm(1.2~1.6in.)
317.5~318.2mm(12.50~12.53in.)

JAPAN RK

520 × 901

114 links

–––

323mm(12.7in.)

–––
–––

–––

Sprockets

Rear Sprocket Warp

0.4mm(0.016in.) or less

0.5mm(0.020in.)

                                  

FINAL DRIVE 11-5

Special Tools

Inisde Circlip Pliers                                                        Bearing Driver Set                                           

11-6 FINAL DRIVE

Drive Chain Slack Inspection

●

 Refer to the Drive Chain Slack Inspection in the 

   Periodic Maintenance chapter.

Drive Chain Slack Adjustment

●

 Refer to the Drive Chain Slack Adjustment in the 

   Periodic Maintenance chapter.

Wheel Alignment Inspection/Adjustment

●

 Refer to the Wheel Alignment Inspection in the 

    Periodic Maintenance chapter.

Drive Chain Wear Inspection

●

 Refer to the Drive Chain Wear Inspection in the 

    Periodic Maintenance chapter.

Drive Chain Lubrication

●

 Refer to the Drive Chain Lubrication Condition 

    Inspection in the Periodic Maintenance chapter.

Drive Chain Removal

NOTE

○

 

Since the drive chain is installed through the 

   swingarm, the chain cannot be removed other 
    than by cutting it.

●

 Prepare the new link pin, link plate, grease seals, 

   and tools for rejoining the chain.

●

 Using a suitable tool, cut the drive chain by 

   removing the link pins.

   Recommended  Tool:  RK

 CAUTION

Read the Tool Manual before removing.

 
   Body [A]
   Handlebar [B]
   Cutting and Riveting Pin [C]
   For Cutting [D]
   Riveting [E]
   Plate Holder (a)[F]
   Plate Holder (b)[G]
   Gauge [H]

●

 Grind [A] the pin head to make it 

fl

 at.

●

 Set the cutting and riveting pin[B]as shown

 

FINAL DRIVE 11-7

●

 Screw the pin holder until it touches chain pin.

●

 Be sure that the cutting pin hits center of chain 

    pin.

●

 Screw the handlebar [A] into body.

●

 Turn the pin holder with wrench [B] clockwise to 

    extract chain pin.

 

Drive Chain Installation

●

 Engage the new drive chain to the old drive chain 

  and pull the end of the old drive chain until they 
   are changing the position.

●

 Remove the old drive chain from the new drive 

   chain.

●

 Apply grease to the link pins [A] and grease seals 

   [B] [C].

●

 Engage the drive chain on the rear sprocket 

   through theswingarm.

●

 Insert the link pins in the drive chain ends.

●

 Install the grease seals [C].

●

 Install the link plate so that the mark [D] faces 

   out.

●

 Push the link plate by hand or plier to 

fi

 x it.

●

 In case of grease seal chain, be sure to set the 

   greaseseals correctly.

●

 Set the plate holder (a) [A] and plate holder (b) [B] 

   on the body.

11-8 FINAL DRIVE

●

 Fit the plate holder (a) to link plate.

●

 Turn the pin holder by hand until plate holder (b) 

   touches the other link plate.

●

 Turn the pin holder by wrench clockwise until two   

   pins of link come into groove of plate holder (a).

●

 Take off the plate holder (a).

●

 Set the plate holder (b) [A] and cutting and 

   riveting pin [B]as shown.

●

 Turn the pin holder until riveting pin touches link 

   pin.
 

●

 Turn the wrench clockwise until tip of riveting pin 

   hits of link pin.

●

 Rivet it.

●

 Same work for the other link pin.

 

FINAL DRIVE 11-9

●

 After staking, check the staked area of the link 

   pin for cracks.
.

●

 Measure the outside diameter [A] of the link pin 

   and link plates width [B].

   Link Pin Outside Diameter
   Standard:  

5.7 < 6.0 mm (0.22< 0.24 in.)

   Link Plates Outside Width
   Standard:  

17.25 < 17.45 mm (0.679< 0.687 

   in.)

●

 If the reading exceeds the specified length, cut 

    and rejoin the chain again.

●

 Check:

   Movement of the Rollers

●

 Adjust the drive chain slack after installing the   

   chain (see Drive Chain Slack Adjustment in the  
   Periodic Maintenance chapter).

11-10 FINAL DRIVE

Engine Sprocket Removal

●

 Remove:

   Engine Sprocket Cover Bolts [A]
   Engine Sprocket Cover [B]

●

 Remove:

   Speed Sensor Bracket Bolts [A]
   Speed Sensor Bracket [B]

●

 Flatten out the bended washer [A].

●

 Remove the engine sprocket nut [B] and washer.

NOTE

○

 

When loosening the engine sprocket nut, hold 

    the rearbrake on.

●

 Raise the rear wheel off the ground with stand.

●

 Remove the axle cotter pin, and loosen the rear   

    axle nut.

●

 Loosen the drive chain (see Drive Chain Slack   

   Adjustment in the Periodic Maintenance chapter).

●

 Remove the drive chain from the rear sprocket 

   toward the right.

●

 Pull the engine sprocket [A] with drive chain [B] 

   off the output shaft [C].

●

 Disengage the drive chain from the engine 

   sprocket.

FINAL DRIVE 11-11

Engine Sprocket Installation

● Replace the sprocket washer and axle cotter pin.
● Install the engine sprocket [A] so that “OUTSIDE” 

 

   letters face outward.
● Apply  molybdenum  disulfide  oil  solution  to  the 

 

   threads of the output shaft and seating surface of 

 

   the engine sprocket nut.
● After torquing the engine sprocket nut, bend the 

 

   one side of the washer [B] over the nut.

NOTE

○ 

Tighten the engine sprocket nut while applying 

 

    the rear brake.

● Tighten:

  

Torque - Engine Sprocket Nut: 125 N•m (12.7   

 

   kgf•m, 92 ft•lb)

  Speed Sensor Bracket Bolts:  9.8 N•m (1.0  

 

   kgf•m, 87 in•lb)

● Install the engine sprocket cover, and tighten the 
   bolts.
● Adjust the drive chain slack after installing the 

 

  sprocket (see Drive Chain Slack Adjustment in 

 

   the Periodic Maintenance chapter).
●  Bend  the  end  of  axle  cotter  pin  surely  after 

 

    tightening  the  axle  nut  (see  Rear  Wheel  

 

   Installation in the Wheels/Tires chapter).

Rear Sprocket Removal

●  Remove  the  rear  wheel  (see  Rear  Wheel  

 

    Removal in the Wheels/Tires chapter).

CAUTION

Do not lay the wheel on the ground with the 

disc facing down.  This can damage or warp 

the  disc.  Place  wooden  blocks  under  the 

wheel so that the disc does not touch the 

ground.

● Remove the rear sprocket nuts [A].
● Remove the rear sprocket [B].

Rear Sprocket Installation

● Install the sprocket facing the tooth number 
   marking [A] outward.
● Tighten the rear sprocket nuts.

  Torque - Rear Sprocket Nuts: 59 N•m (6.0 

 

   kgf•m, 44 ft•lb)

●  Install  the  rear  wheel  (see  Rear  Wheel 

 

    Installation in the Wheels/Tires chapter).