S-Stage+D KIT（106 cc/SCUT/Decompression）
Instruction ManualCO・Thank you for purchasing one of our products.
Please strictly follow the instructions to install and use the kit.
・Before installing the kit, please be sure to check the kit contents.
If you have any questions about the kit, please contact your local
TAKEGAWA dealer.

Item No.: ０１―０５―５３１４
Super cub 50

C 50-9000001 〜 0095210
C 50-0200001 〜 0999999
C 50-2100001 〜 2299999

Little cub C 50-4300001 〜
AA01-3000001 〜 3999999

AA01-1000001 〜 1699999◎ Please note: Illustrations and photos may vary from the actual
hardware.

J P PATUS PAT※Not installable on PGM-FI models.

〜 Features 〜○ The camshaft with decompression will reduce a load on the transmission or kickshaft, and allows the engine to start with a lighter weight kick even though the engine is powered
up such as bore-up to 106cc with our S-Stage (SCUT) Kit. Cylinder has an oil jet hole, which can lubricate and cool the piston and the connecting rod.

About fuel to use

This S-Stage Kit is so designed to achieve a higher compression ratio than stock engines. Therefore, high-octane gasoline should always be used. If you use regulargasoline, you cannot get the high performance of the Kit. Also the piston will be damaged and may lead to a serious failure of a motorcycle. Before installing thiskit, make sure that no regular gasoline remains in the fuel tank. In case regular gasoline is remaining in the fuel tank, do replace it with high-octane gasoline.

About the spark plug

PY

Be sure to replace a spark plug with a CR8HSA (NGK) or U24FSR-U(DENSO). In the case of a non-resistive plug, please replace with C8HSA (NGK) or
U24FS-U (DENSO). Subsequently, choose and use a right spark plug with the right grade, depending on the carburetor set up.

About quick starting and sudden acceleration

Please note that sudden acceleration and sudden engine braking will put a heavy load on the engine, and that it may result in crank shaft and engine
damages in the worst case.

Important notice about installation of this Kit

For the installation of this Kit, a heavy-duty centrifugal clutch (with 32 weights) and heavy-duty oil pump are needed.
※ We disclaim all responsibility for consequential and incidental damages or any other losses arising from the use of the Kit, if your bike is not equippedwith these additional hardware.

Read all instructions before starting the installation.

◎ We do not take any responsibility for any accident or damage whatsoever arising from the use of the Kit not in conformity with the instructions in this Instruction Manual.
◎ Please drive safely and follow the local traffic law.
◎ We shall be held free from any kind of warranty whatsoever of products other than this product if any defect takes place on the other products than this one after the
installation and use of this product.
◎ We do not have any information or service data on the combination of our products and other manufacturer’s products.
◎ Please note that this Kit is designed for exclusive use with the above-mentioned fitting models and frame numbers only and that it cannot be mounted on any other models.
◎For installation, please prepare tools and work with reference to the installation procedures. Besides, this instruction manual, as well as a HONDA's genuine parts service manual,is prepared for persons who have acquired basic skills and knowledge. We recommend those who are technically inexperienced or without enough tools to ask a technically-reliable
specialist shop for the installation work.
◎ Bolts, nuts and dowel pins will be reused. However, be sure not to use the worn-down or severely-damaged ones, which please do replace with new ones.
◎If you use a stock carburetor, do not remove the air cleaner box or air cleaner elements. If you change the carburetor, please do the setting to match various conditions like weather
and temperatures. Disregarding these instructions will result in engine troubles and serious accidents.
◎ In some cases noise coming from the cylinder may sound louder than stock.
◎ This Instruction Manual is prepared mainly for the Cub. Therefore, this Instruction manual has some contents not to apply to other vehicles.
◎Always use the supreme unleaded high-octane gasoline.
◎ We recommend to install and use an oil cooler for riding at a high outdoor air temperature.
◎ We highly recommend to upgrade the exhaust system and the carburetor to ensure the potential even though the stock exhaust system and stock carburetor are fine to ride.

CAUTION The following show the envisioned possibility of injuries to human bodies and property damage as a result of disregarding the following cautions.
・Please drive safely and follow the local traffic law.
・Work only when the engine and exhaust system are cool to avoid burns.
・Prepare appropriate tools and work properly to avoid the breakage of parts or injuries.
・Always use a torque wrench to tighten bolts and nuts securely to the specified torque to avoid these parts getting damaged or loose.
・As some products and frames have sharp edges or protruding portions, please work with your hands protected to avoid injury.
・Before riding, always check such parts as screws for loose. If you find loose ones, screw them securely up to the specified torque to avoid parts coming off.
NOTE: Be sure to re-tighten the cylinder head to the specified torque.
・Always use new gaskets and sealings. About the reused parts, please check carefully for wear or damaged and be sure to replace it with new ones if necessary.

WARNING The following show the envisioned possibility of human death or serious injuries to human bodies as a result of disregarding the following warnings.
・Always start the engine in a well-ventilated place, and do not turn on the engine in an airtight place. (Otherwise, you will suffer from carbon monoxide poisoning.)
・When you notice something abnormal with your motorcycle, stop riding immediately in a safe place to avoid accidents.
・Before doing work, place the motorcycle on level ground to stabilize its position for safety to avoid the motorcycle overturning.
・Check or carry out maintenance of your motorcycle correctly according to the procedures in the instruction manual or service manual.
(Improper checking or maintenance could lead to accidents.)
・If you find damaged parts when inspecting or performing maintenance of your motorcycle, do not use these parts, and replace them with new ones.
(The continued use of these damaged parts could lead to accidents.)
・As gasoline is highly flammable, never place it close to fire. Make sure that nothing flammable is near the gasoline. Since vaporized accumulation of gasoline is at high riskof explosion, work in a well-ventilated place. (Otherwise it may cause a fire.)‑1‑

Sep./10/ 12◎Please be informed that, mainly because of improvement in performance, design changes, and cost increase, the product specifications and prices are subject to change without
prior notice.
◎ This manual should be retained for future reference.

Lesson◇ Bolts and nuts will get loose when turned counterclockwise, and tighten when turned clockwise(some exceptions).
◇ At the beginning, hand tighten a screw without using a tool. If it stops turning after giving it one or two turns, the screw may be fixed improperly.
◇ To loosen a screw means turning a tightened screw three or four times to the counterclockwise, and to remove it means turning it until it comes off.
◇To tighten a screw means to screw it up to keep it from getting loose. The numeric value as a guide at which a screw will not break or get loose when tightened is the so-called"torque." If you do not have a torque wrench, please try to tighten a screw as tight as possible to the point where the screw will not break or get loose, though we can not take any
responsibility for the breakage. In case you do not use a torque wrench, you need to judge, only by intuition or using experience, the degree of tightening power at which the bolt
will break or get loose.
◇ Improper use of tools will result in breakage of a top of a bolt or screw.

CO◇ Kit includes:

５

０１―０２―０１２７

１

３

４

０１―０８―０３３３

２

１５

１６

１７

０１―１３―０６０７

０１―１３―０６０６

６

７

８

１３

No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

Part Name
PistonPiston ring
Piston pin
Piston pin circlip
CylinderCylinder head gasket
Cylinder gasket
Head cover gasket
Right-side cover gasket
Left-side cover gasket
Tappet cap O-ringExhaust pipe gasket
Rubber seal
Inlet pipe gasket
Camshaft COMP.
Valve rocker arm ASSY.
Stopper plate０１―１３―７００２

１２

１１

１８

PY

１４

１０

９

Qty
1
1
1
2
1
1
1
1
1
1
2
1
1
1
1
2
1

Repair Part Item No.

In packs of

13012-RAS-T10
00-01-0091 (with two circlips)
00-01-0003
01-01-0220

1
1
6
1

01-13-7002

00-01-0064
00-01-0066
91301-181-T01
14100-GDH-T02
00-01-1024
00-01-0076

1
1
1
2
2
2
1
1
1
1

※ Please order repair parts with the Repair Part Item No. Without the Repair Part Item No., we may not be able to accept your orders.
Some parts are only available as a set. In this case, please order them with the set number.

◇ Tools to use for the installation

1
2
3
4
5
6
7
8
9
10

Torque wrench
Plastic hammer
Cutter knife
Open end wrench (10-12)
Open end wrench (12-14)
Open end wrench (14-17)
Closed wrench (10-12)
Closed wrench (12-14)
Closed wrench (14-17)
Plug wrench handle (in-vehicle tool）

‑2‑

11
12
13
14
15
16
17
18
19
20

Plug wrench (in-vehicle tool)
Needle nose plier
Thickness gauge
Small slotted screwdriver
Extension (Medium size)
Extension (Small size)
Socket wrench (14 mm)
Socket wrench (12 mm)
Socket wrench (10 mm)
Ratchet wrench

Sep./10/ 12

‑3‑Exhaust pipe gasket

Part names

Dowel pin, 8x14 ※1

Cylinder head gasket

Inlet pipe gasket

O-ring, 30 MM

Tappet adjusting hole cap

Spark plug ※3

Left-side cylinder head side coverLeft-side cylinder headside cover gasket

Dowel bolt, 5 MM

Dowel pin, 8x12 ※1

Cam sprocket

Cam shaft COMP.

PY

Tappet adjusting hole cap

O-ring, 30 MM

Cylinder head cover gasket

Hex nut, 6 MM

Sealing washer A, 6 MM
(Copper plated)

Cap nut, 6 MM

Sealing washer, 6 MM

Cylinder head cover

Stopper plate

Valve rocker arm

Tappet adjusting screw

Tappet adjusting nut

Valve rocker arm shaft

Flange bolt, 6x20

Flange bolt, 6x110(Copper or a aluminum)
sealing washer, 6.5 x12

Right-side cylinder head side cover

Right-side cylinder headside cover gasket※2

Cylinder※3 Be sure to change to CR8HSA (NGK) or※３ ※３
Be sureto change
CR8HSA(NGK)Be sureto (DENSO).
use to
CR8HSA(NGK)or or
U24FSR-U
U24FSR-U
U24FSR-U(DENSO).
(DENSO).

These
hardwareisisnot
in in
the
kit
or or
※２ ※2
These
hardwareis notincludedin the
kit
orkit
※２
These
hardwarenotincluded
included
thewillbenot be used
for installation
the installationof thiswill notfor theof thiskit. kit.
will notused
be usedfor the installationof thiskit.

※１ ※１
ノックピンは使用する場所により全長が違います。
Note:
Pleaseinstallthepinsrightdiffers
sized depending
dowel pins
※1 Thelengthof thedowel
ご注意下さい。
onplease note.
intothetheuse,rightwhichplace.

Bolt, 6 MM

Cam chain guide roller COMP.

Dowel pin, 8x14 ※1

Bolt, 6 MM

Washer, 8 MM

Guide roller bolt

Dowel pin, 8x12 ※1

Cylinder gasket

Rubber seal, 16 MM

PistonPiston pin

Piston pin circlip

Piston ring set

CO

Sep./10/ 12

C

A

CO
B

◇Remove the exhaust system by pulling outwards.
Do not lose the exhaust pipe gaskets.

Unfasten the nut A (12mm cap nut) and the bolts B and ◇Remove bolts on both right and left sides of the air
C (10mm bolts) by turning them counterclockwise.
cleaner by turning them counterclockwise.
Unfasten the washers as well.
Tool:
Do the same on the other side.
10mm socket wrench & M-sized long extension◇Remove the generator cover by turning three bolts
counterclockwise.
Tools to use:

３．Remove the spark plug.

Tools:

8mm open end wrench,
8mm socket wrench & short extension

A: 12mm socket wrench & M-sized long extension
B: 10mm socket wrench & M-sized long extension
C: 10mm socket wrenchＡ

Removal of standard
hardwareＢ

１．Remove the carburetor.

◇Disconnect wires on the horn.

◇Turn off the gasoline cock at the lower left of the
carburetor.

◇Remove the plug cap from the plug by pulling it out.
Be sure to hold the cap when pulling it out.
◇Remove the plug by turning it counterclockwise with aplug wrench in an in-vehicle tool.

◇With electric starter models, remove the generator
cover by turning both A and B counterclockwise.

PY

Tool to use:
Slotted screwdriver

４．Remove the cylinder-head left-side
cover.
６．Remove two tappet caps.

◇Remove the belt bundling wires together.

◇Remove the carburetor ASSY. attached with throttle
cables and choke cables, and hang them on the frontleft turn signal.

◇The left-side cover will remove when the hex bolt at the

２．Remove the exhaust system.

center of Right cylinder head cover is removed. In casethe left-side cover cannot be removed, screw in the hex
bolt by a few threads and tap the bolt head with a plastic

hammer.

Tool to use:

10mm socket wrench◇Remove the fuel cock by turning two screws
counterclockwise.

◇Turn two tappet caps counterclockwise to remove
them.
Tool to use:

17mm closed wrench

Tool:
Phillips screwdriver

７．Remove the cam sprocket.

◇Remove two nuts on the exhaust pipe by turning themcounterclockwise.
Tool to use:

Notch

10mm open end wrench◇Remove two bolts by turning them counterclockwise

５．Remove the generator cover.

holding the cylinder head and inlet pipe.
Tool:

Stamped O mark8mm closed wrench

Notch◇Remove the nut holding the exhaust system byturning it counterclockwise.
Tool to use:
14mm closed wrench
Little cub
17mm closed wrench◇Unfasten the hex bolt on the shift pedal, and remove theshift pedal by sliding it toward you.
Tool to use:
10mm closed wrench◇Remove the duct by pulling it upward.

‑4‑

FlywheelSep./10/ 12

With electric starter models

Guide roller bolt

COSide bolt◇Align “T” mark on the flywheel and “O” mark on the
cam sprocket with their own notches by turning the
flywheel counterclockwise.

◇Pull out the cylinder. (If it were hard to pull it out, hit thecylinder lightly with a plastic hammer.)◇Loosen the guide roller bolt on the cylinder and theside bolt between cylinder and crankcase by◇Remove the piston.

turning them counterclockwise.
Tools to use:

１３．Remove a cylinder gasket,
rubber seal and dowel pin.

10mm socket wrench

９．Remove the cylinder head cover.

Cylinder gasket◇While removing the cylinder, the cam chain guideroller will come out.

With electric starter models

Rubber seal

PY
１２．Remove the piston.

◇Remove four nuts securing the cylinder head cover by
turning them counterclockwise in a crisscross pattern.
◇Remove four washers beneath the nuts.
Tool to use:
10mm closed or socket wrench◇Remove two hex bolts on the cam sprocket by turningthem counterclockwise while stop rotating the
flywheel.
Tools to use:
8mm closed wrench,

14mm socket wrench for stop rotating the flywheel
For electric starter models
8mm closed wrench,
14mm socket wrench & M-sized long extension◇If the gasket does not remove smoothly, please use a◇Plug the cylinder hole in the crankcase with a waste
cloth to avoid entering any unwanted parts in the case.

scraper or cutter but NOT scratch the crankcase.
Keep off any dirt or unwanted parts.

◇Remove the head cover. (If it were hard, tap with aplastic hammer around the perimeter.)If the traces of the gasket material remain on the

１４．Installation of clutch and oil
pump.

cylinder head, remove them completely with a scraperor a cutter.

※An oil pump and a heavy-duty clutch are required to
install this kit.
※Installation of the oil pump and the clutch at this stage

１０．Remove the cylinder head.

Piston pin circlip◇Gently pry the cam sprocket from the camshaft witha small-sized slotted screwdriver to remove it.
◇Remove the cam chain from the cam sprocket, andwithdraw the cam sprocket.

is quite easy.

◇Remove one of the piston pin circlips with ascrewdriver tip.

Tool: Small slotted screwdriver◇Remove the dowel pin fixed in the center of thecamshaft.

８．Remove the cylinder-head sidebolt.

◇Remove the cylinder head from the cylinder by pulling
forward. (If it were hard to pull, tap it with a plastic
hammer.)◇Remove and keep the two dowel pins to reinstall.

１１．Remove the cylinder.
◇To remove the piston pin, please push it forward fromthe other side with slotted screwdriver.

◇Remove the cylinder-head side bolt holding thecylinder head and cylinder by turning it
counterclockwise.
Tool to use:
10mm open end wrench◇Remove the loosened guide roller bolt and cylinderside bolt by turning them counterclockwise.

‑5‑

Sep./10/ 12

Installation of S-Stage
Kit:

Exhaust mark１．Assemble and install a piston.
dowel pinCO◇Fix the piston so the arrow on the piston head faces
downward, or to the exhaust side.

◇Check that two dowel pins are present.

※Do not align the piston pin clip end-gap with thepiston cut out.

Piston◇Put the oil ring expander.

Piston cut out
Circlip end-gap◇To be easier, first, you install one-third of the piston pin
into the piston.

◇Fix a supplied piston pin circlip securely to the grooves
for circlip on one side of the piston.

Exhaustmark

Left ◇Put the lower oil ring side rail.
side◇You can rather easily install the piston pin circlip bypressing it with a screwdriver, but taking care not tocylinder and spread the oil evenly with fingers.

groove.

PY◇Insert the cylinder.

◇You can rather easily install the piston pin circlip bypressing it with a screwdriver, but taking care not todamage the piston with the screwdriver.
◇Fix the piston pin circlip first on the left side.

damage the piston with the screwdriver. Do the work

carefully as, in some cases, the circlip comes off flying
while you are pressing it inside. So, wear protective

Tool to use:
◇Put the upper oil ring side rail.

Small slotted screwdriver◇Apply engine oil onto the inside of the supplied◇Fix securely the supplied piston pin circlip to the circlip

eyeglasses for your eyes.

◇Remove the plugged waste cloth.

◇Apply engine oil to the piston-ring grooves, and fix
piston rings in the order of an oil ring expander, lower
oil ring side rail, upper oil ring side rail, and top ring.

◇Fit in the cylinder, by installing the piston rings one◇Arrange the positions of piston ring-end gaps

２．Installation of cylinder.

so they do not align each other.

◇Degrease the mating surfaces of the cylinder and the
crankcase to attach the gasket.

Top ring◇Put the top ring.

by one with fingers, being careful not to move thepiston ring-end gaps out of place.

Side
rails
Expander◇Once the piston has been placed inside the cylinder,
pass the cam chain through the cylinder, and fix thecylinder into the crankcase.

Top ring
Side rails
PistonExpanderPay attention to the cross section
as well !!

◇Apply engine oil to the piston pin and to a small end of
the con’rod, and install the piston pin.

◇Install the cylinder gaskets and rubber seal.
Remove the excess of the gasket if necessary.

‑6‑◇With pulling the cam chain, fix the guide roller.

Sep./10/ 12

StopperCO◇Attach the cylinder-head cover gasket and head
cover.
◇Attach a stopper plate of the kit and rocker arm to thecylinder head, with a stopper on the stopper plate facing
to the right of the cylinder head.

MO‑OIL◇Install the cam-sprocket bolt into the camshaft. The
camshaft will come out when you pull it out or tap the◇Press in the guide roller so the center of the guideroller and the guide-roller bolt hole on the cylinder.

Arrow showing which side should
face downward.

cylinder head with a plastic hammer. Remove thecamshaft while twisting. Do not pull it out by force.

◇The arrow should face downward.
◇Apply molybdenum to the stock rocker arm shaft.
And align the holes of stopper plate and rocker arm, andOIL

PY
４．Installation of cylinder head.

◇Apply engine oil to the rocker arm and adjust bolt
included in the kit.

◇Install the guide roller bolt.
(Hand tighten temporarily)◇Degrease the cylinder head surface and uppersurface of the cylinder.

OIL(Hand tighten temporarily)

MO‑OIL

３．Change of camshaft.

◇Apply molybdenum oil to the cam top.

Hex nut◇Use the below sets to fit the head coverFrom the front view:
Lower left: copper washer + cap nut
Lower right: iron washer + hex nut
Two others(upper side): iron washer + cap nut◇Apply engine oil to bearings at the tip on each side of
the special cam shaft.
◇Attach the cylinder side bolt.

Copperwasher

fix the rocker arm shaft.

◇Tighten nuts in a crisscross pattern in two or more
stepsevenly.
Caution: Apply the specified torque.
◇Install the cylinder head while fitting the cam chain.

Torque: 12 N・m (1.2 kgf・m)
Tool to use:
10mm closed wrench◇Remove the stock rocker arm shaft and rocker
arm of the cylinder head.

◇Set the cam shaft on the cylinder head of the kit.

◇Hold the cam chain with a screwdriver to keep the cam
chain from sliding into the cylinder.

The stopper of the decompression cam is facing up.

‑7‑◇Attach a head side bolt. Fully tighten the guide roller
bolts and the cylinder side bolts which were tightened
temporarily.
Tools to use:
10mm open end wrench
10mm closed wrench
Sep./10/ 12

６．Adjustment of tappet clearance.
◇Give the crankshaft more than two turns
counterclockwise. First release the decompressing
function, and then join together marks on the cam
sprocket and on the cylinder head.
※Never rotate the crankshaft clockwise. Otherwise,
the decompressor will work,making the valve
clearance adjustment impossible.

Change-pedal shaft

CO

Oil will flow out a little after the bolt
is tightened. Wipe off the oil.

Notch

◇Remove the hex bolt next to the change-pedal shaft.
As the tensioner will slacken, it will be easy to install the
cam chain.

Stamped“O” mark
Cylinder head side

10 N･m (1.0 kgf･m) for a guide roller bolt
10 N･m (1.0 kgf･m) for lower and upperside bolts

５．Installation of cam sprocket

Notch

Tools to use: Needle nose plier, 9mm closed wrench,
Thickness gauge
For electric starter models, fit together the cranks◇Set the cam chain so the “O” mark on the cam sprocket
and a notch on the cylinder head align together, andinstall the chain on the cam shaft.

Caution: Apply the specified torque.

◇While tightening a rocker arm’s tappet adjustingscrew, tighten the tappet adjusting nut to the extent
that a 0.05 mm thickness gauge, placed between thetappet adjusting screw and the valve stem end, can bepulled out with a little resistance. (If you have no ideaof the little resistance, use a 0.07 mm and 0.03 mm
thickness gauges. When the 0.07 mm gauge won’t
go in between the space but the 0.03 mm gauge goesin quite loosely, this means that roughly 0.05 mm
clearance is secured.) Set the space at 0.05 mm bothfor intake and exhaust.

with a 14mm socket wrench and M-sized longextension.

Notch◇After adjusting the tappet, turn the flywheel
counterclockwise twice by hand, and then, align “T”
and “O” marks each other.
※Never rotate the crankshaft clockwise. Otherwise,
the decompressor will work,making the valve
clearance adjustment impossible.

PY
Flywheel

Flywheel side

With electric starter models◇Check to see if the tappet clearance is still rightthickness. If not, repeat this adjustment until you get
the right tappet clearance.

◇Turn the flywheel until the ”O” mark on the cam sprocket

With electric starter models
Flywheeland the “T” mark on the flywheel align with each notch.
(Though the flywheel will not stop at the required

position because the magnet force repels each other.)
It is all right if ”O” and “T” marks align with each notch

With electric starter models

at the same time after fixing the cam sprocket.

Valve clearance(Intake side)◇Tighten up two cam sprocket bolts while stop rotating
the flywheel.

◇Align the “T” mark on the flywheel with the notch on
the crankcase.

Caution: Apply the specified torque.
Torque: 9 N・m (0.9 kgf・m)

Tools to use:
8mm closed wrench
14mm closed wrench
For electric starter models
8mm closed wrench,
14mm socket wrench & M-sized long extension◇Install two tappet caps.
Caution: Apply the specified torque.
Torque: 12 N・m (1.2 kgf・m)Valve clearance(Exhaust side)
Adjusting screw

Tool to use:
17mm closed wrench

７．Installation of cylinder headleft-side cover◇Keep aligning the camsproket bolt hole with the notchof cylinder head and set the shaft with the lift point ofcamshaft facing to the piston head.
This arrangement places the cam shaft at TDC (Top
Dead Center) on the compression stroke.
◇Install the bolt next to the change pedal shaft, and tighten
it up.
※Installing the optional cam, see its original
instruction manual.

Thickness gauge
Valve stem

Caution: Apply the specified torque.
Torque: 10 N・m (1.0 kgf・m)◇Attach the cylinder-head left-side cover with gasket.

Tools to use:
10mmsocket wrench & M-sized long extension
For electric starter models
10mm socket or open end wrench

When tightening the bolt, make sure that the
stoppers of the cover and the cylinder head aremating not to rotate the cover.

‑8‑

Sep./10/ 12

CO◇Tighten the nuts to hold the flange and vehicle.

(See the stoppers of the coverand cylinder head attaching.)◇Install the change pedal.

Caution: Apply the specified torque.

◇Connect wires to the horn.

Caution: Apply the specified torque.
Torque: 10 N・m (1.0 kgf・m)

10 N･m (1.0 kgf･m) for flange

6 N･m (3.5 kgf･m) for the vehicle

Tool to use:
10mm closed wrench◇Make sure that all the nuts and bolts are
fastened properly.

Tool to use:
14mm closed wrench
Little cub 17mm closed wrench◇Fully tighten the nuts and bolts at three portions.

１２．Installation of leg shield:

１０．Installation of stock carburetor.

◇Fit the backside of the leg shield on the frame andthen the front side.

A
B◇Tighten up the hex nut at the right side of the cylinder ◇Make sure the O-ring is installed on the inlet pipe.
head. (The arrow marked nut is the hex nut in theabove photo.)
Choke cable
Caution: Apply the specified torque.
Torque: 12 N・m (1.2 kgf・m)

Tool to use:
10mm socket wrench

８．Installation of spark plug.

PY

Main harness◇Turn on the fuel cock.

１１．Installation of generator cover.

◇Bundle the choke cable and main harness.

At the portion A, tighten the 12mm cap nut, placing theplate in between the nut and leg shield.
At the portion B, tighten the 10mm long bolt, placing thespacer between the rear side of the leg shield and thelong bolt.
At the portion C, tighten the 10mm bolt, placing thewasher in between the mounting point and the 10mm
bolt.
Do the same on the other side.
Caution: Apply the specified torque.
A
B,C: 20 N･m (2.0 kgf･m): 10 N･m (1.0 kgf･m)

Tools to use:
A : 12mm socket wrench & M-sized long extension
B : 10mm socket wrench & M-sized long extension
C : 10mm socket wrench◇Install the plug with either an in-vehicle tool or plug
wrench.
Caution: Apply the specified torque.
Torque: 11 N・m (1.1 kgf・m)
Tool to use: Plug wrench◇Attach a plug cap to the plug.

９．Installation of stock exhaustsystem.

C◇IInstall the fuel cock with two screws.
Tool:
Phillips screwdriver

A◇Install three bolts to hold the generator cover.
Caution: Apply the specified torque.
Torque: 10 N・m (1.0 kgf・m)◇Mount the air cleaner on the frame with one bolt eachon right and left sides.

Tools to use:
8mm socket wrench & short extension

Caution: Apply the specified torque.
Torque: 10 N・m (1.0 kgf・m)

Tools to use:
10mm socket wrench & M-sized long extension

Ａ

Ｂ
B◇Fit the exhaust system between the brake pedal andstep, and set the flange under the exhaust port ofcylinder head.
◇Set the exhaust pipe gasket into the space between ◇Install the duct.
the cylinder head and exhaust system.
Hand tighten the nut temporarily to fit the exhaustsystem to the pivot shaft.

◇For an electric starter model, tighten both A and B.
Caution: Apply the specified torque.
A

2 N･m (0.2 kgf･m)

B

3 N･m (0.3 kgf･m)

Tool to use:
Flat tip screwdriverC◇Fasten two bolts of the intake manifold.
◇Tighten two flange nuts at the exhaust pipe
temporarily.
Tool to use:
10mm open end wrench

Caution: Apply the specified torque.

Co.,Ltd.

Torque: 10 N・m (1.0 kgf・m)

3-5-16 Nishikiorihigashi Tondabayashi Osaka Japan

Tool to use:
8mm closed wrench

TEL : 81-721-25-1357 FAX : 81-721-24-5059 URL : http://www.takegawa.co.jp‑9‑Sep./10/ 12

●Before riding:
１ About fuel:◇ Use High-octane gasoline ONLY.
◇ If there remains regular gasoline in the fuel tank, always replace it with high-octane gasoline.

２ Additional hardware to be installed:

CO◇ For driving your bike with this kit installed, the following hardware need to be installed additionally. We disclaim all responsibility for any consequential and incidental damages
or any other losses arising from the use of the provided products or parts, if your bike is not equipped with these additional hardware.

２―１ Oil pump:

The installation of Super Oil Pump is essential in order to circulate large amounts of oil and to help cool down the engine which the output power and the heat increased.

Essential Super Oil Pump

ModelsSuper cub 50
Little cub
２―２Part No.
01-16-0053 (with drill bit)
01-16-0052 (without drill bit)

Clutch:The stock clutch cannot respond to the high engine power, and, therefore, causes clutch slippage, and consequently cannot transmit the engine power fully to the rear wheel.
Therefore, it is necessary to install our heavy-duty clutch such as our Special Clutch.

ModelsSuper cub 50
Little cub

Item Nos

02-01-0215

Heavy-duty Centrifugal Clutch Kit

３ Change of drive sprocket:

PY◇ The installation of this kit will increase the power of your vehicle. So with the stock gearing, you will find it uncomfortable to drive your vehicle because the gear ratio is too low,
and will cause severe wears of hardware, not only adversely affecting the engine life, but also possibly breaking the engine in the worst case. Therefore, please replace the drive
and driven sprockets to make the gear ratio higher.
※ Please note that a driven sprocket is not included in the kit.
※ Furthermore, the gear ratio of the sprocket changes according to the clutch type and wheel size. The list below is just for your reference because the configuration in the list
below needs to be changed according to the driver’s weight and purpose of use.
※When changing the driven sprocket, remove hardware around the rear wheel. Raise the rear wheel off the ground by placing a racing stand under the engine for working safely.

Recommended sprocket for use with S-Stage, SCUT (with a driver weighing 65 kg)

Rear wheel size

Specifications
ClutchSuper cub 50

17 inchCentrifugal

Little cub

14 inchCentrifugal

ModelsTransmission
4-speed
3-speed
4-speed
3-speedRecommended Sprocket
Drive sprocket (Front)
Driven sprocket (Rear)
16
42
16
35
16
41 (Stock)
16
35◇When the stock sprocket is changed to the recommended driven sprocket, the drive chain becomes too long or too short. You need to either shorten the chain by cutting it witha chain cutter, or to prepare a new drive chain.

●For best performance:
１ Carburetor
Higher power can be attained through the installation of Big Bore Carburetor Kit suitable for each model of a bike for the best performance of S-Stage.

ModelsSuper cub 50
Little cubPart No.
03-05-039

２ Exhaust system
Please install various kinds of TAKEGAWA exhaust systems for higher power output.

３ Oil cooler
As a longtime high-load driving will further increase the heat release value of the engine, we recommend you to install an Oil Cooler Kit which keeps oil at appropriate temperaturesand prevents such troubles as oil film shortage at high temperatures.

‑10‑

Sep./10/ 12