Excel 11790 User manual

MODEL:11790

1. Introduction
Dear Customer,
We hope your new tool brings you much enjoyment and
success.
Note:
According to the applicable product liability laws, the
manufacturer of the device does not assume liability for
damages to the product or damages caused by the
product that occurs due to:
•Improper handling,
•Non-compliance of the operating instructions,
•Repairs by third parties, not by authorized service
technicians,
•Installation and replacement of non-original spare
parts,
•Application other than specified,
A breakdown of the electrical system that occurs due to
the non-compliance of the electric regulations and
regulations.
We recommend:
Read through the complete text in the operating in-
structions before installing and commissioning the
device. The operating instructions are intended to help
the user to become familiar with the machine and take
advantage of its application possibilities in accordance
with the recommendations. The operating instructions
contain important information on how to operate the
machine safely, professionally and economically, how to
avoid danger, costly repairs, reduce downtimes and
how to increase reliability and service life of the
machine.
In addition to the safety regulations in the operating
instructions, you have to meet the applicable regulations
that apply for the operation of the machine in your
country. Keep the operating instructions package with
the machine at all times and store it in a plastic cover to
protect it from dirt and moisture. Read the instruction
manual each time before operating the machine and
carefully follow its information. The machine can only
be
operated by persons who were instructed
concerning
the operation of the machine and who are informed
about the associated dangers. The minimum age
requirement must be complied with.
2. Scope Of Delivery
•Open the packaging and remove the device carefully.
•Remove the packaging material as well as the pack
aging and transport bracing (if available).
•Check that the delivery is complete.
•Check the device and accessory parts for transport
damage.
•If possible, store the packaging until the warranty
period has expired.
Attention
The device and packaging materials are not toys!
Children must not be
allowed to play with plastic bags, film and small parts!
There is a risk of swallowing and suffocation!
3. Safety Instructions
The safety instructions must be observed when
using the chainsaw. For your own safety and the
safety of others, please read this information
carefully before using the chainsaw and keep it in a
safe place for reference. Use the chainsaw only to
saw wood or objects made of wood. Any other
types of use are at your own risk and could be
dangerous. The manufacturer cannot be held liable
for damage caused by improper or incorrect usage.
Safety instructions and accident prevention
To prevent the incorrect handling of the chainsaw,
please read the operating instructions in their
entirety before using the chainsaw for the first
time. All the information on the handling of the
chainsaw is relevant to your personal safety. Ask a
professional to show you how to use the chainsaw!
• Before plugging in, check the plug and cable for
damage. If damage is discovered, have it repaired by a
specialist immediately.
• Never use a damaged cable, connection or plug or a
power cable which does not comply with the
requirements. If the cable is damaged or severed,
unplug immediately.
1

• Switch the chainsaw off before releasing the chain
brake.
• To prevent injury, wear tight-fitting clothes and safety
boots.
• To prevent damage to your hearing, wear earmuffs,
helmets with a visor are particularly advantageous.
Make sure you have a firm footing when working with
the chain saw.
• Keep your place of work tidy.
• To prevent electric shock, avoid contact with earthed
parts.
• Always pull the plug out of the power socket before
doing any work on the chainsaw.
• Only plug in when the chainsaw is switched off,
• The chainsaw must be used only by one person at a
time. All other persons must stay clear of the chainsaw’s
area of swing. Children and pets in particular must be
kept well away at all times.
• The saw must not be touching anything when it starts
up.
• Hold the chainsaw firmly in both hands when working
with it.
• The chain saw must not be operated by children and
young people. The only exception to this prohibition are
young persons of 16 years and over who can use the
chain saw under supervision as part of their training.
Lend the saw only to those persons who are familiar
with this type of chainsaw and know how to handle it.
Always pass on the operating instructions together with
the chainsaw.
• Make sure the chain saw is stored in a place
inaccessible to children.
• The saw may be operated only by persons who are
rested and in good health, i.e. in a good physical
condition. If you start to tire, have a break in time. The
chainsaw should not be used after the consumption of
alcohol.
• Never expose the chainsaw to rain or bad weather.
Make sure there is enough light at the place of work. Do
not use power tools in the vicinity of combustible liquids
or gases.
• If the chainsaw is not being used for a while, it must
be set aside in such a way that no other person is
endangered.
• Before making a cut, always set the claw stop before
you start to saw.
• Remove the chainsaw from the wood only with the
saw chain still running. Anyone who saws without a
stop can be pulled forwards.
• Never use the chainsaw when standing on a ladder,
in a tree or in any other instable places. Do not saw
with one hand.
• The power cable must always be behind the saw
operator.
• The power cable must always lead away from the rear
of the chainsaw.
• Use only original accessories.
• Chainsaws used outdoors must be connected up
to an earth-leakage circuit-breaker.
• Do not overload your power tools. They run best and
safest within given range of capacity.
• Always use the correct power tool. Do not use
low-powered chainsaws for heavy jobs.
• Use the cable only for its proper purpose. Never carry
your electric tool by its cable. Do not use the cable to
pull the plug out of the socket. Protect the cable from
heat, oil and sharp edges.
• Extension cables out of doors.Use only authorized
and accordingly labelled extension cables out of doors.
• Use a strong support when sawing converted timber
and thin branches (saw-horse, Fig. 7b). Do not stack
the timber and do not have it held by a second person
or with your foot.
• Logs must be secured in position.
• On sloping ground, always work facing upwards.
• When cross-cutting always set the claw stop against
the timber you want to saw (see Fig. 7b)
2

• Always set the claw stop before cross-cutting. Only
then switch on the chainsaw and start sawing into the
wood. Pull the chainsaw upwards at the rear and lead
the direction with the front grip. Use the claw stop as a
fulcrum. To reposition for further cutting, interrupt the
sawing process and exert a slight pressure on the front
grip. Pull the saw back a little, position the claw stop
further down the cut and pull up the rear grip (see Fig.
7a).
• Pull the saw out of the wood only when the saw chain
is running.
• If you carry out several cuts, switch off the chain saw
in-between.
• Plunge cuts and horizontal cuts may only be carried
out by professionals (high risk of kick-back, see Fig. 8).
• For horizontal cuts, position the smallest possible
angle. This requires extreme caution, as the claw stop
can not be applied in this case.
• If the chain gets stuck when sawing with the upper side
it may be thrust towards the operator. For this reason
you should saw wherever possible with the bottom side,
as the chainsaw will then be thrust away from the body
towards the wood (see Fig, 9 and 10).
• Pay extra attention when cutting splintered wood.
Sawed off pieces of wood may be catapulted in any
direction (risk of injury!)
• Do not use the chainsaw to remove or similar objects.
• When lopping off branches, the chain saw should be
supported wherever possible against the trunk, Do not
cut with the tip of the guide bar (risk of kick-back, see
Fig. 8).
• Leave branch lopping work should be carried out by
trained personnel! Risk of injury!
• Pay special attention to branches under tension. Do
not cut through freely suspended branches from
underneath.
• Never stand on the trunk when loping off branches.
• The chainsaw should not be used for forest work, i.e.
for felling and lopping off branches in the forest.
Because of the cable connection the saw operator
does not have the necessary mobility and his safety is
not guaranteed!
• Always stand to the side of the tree being felled.
• When the tree is being felled, watch out for falling
branches when stepping back.
• On slopes the saw operator should stand to the upper
or left or right side the trunk or lying tree, never to the
bottom side.
• Watch out for trunks rolling towards you. Kick-back!
• The power saw is likely to recoil if the tip of the guide
bar (especially the top quarter) accidentally touches
wood or any other solid objects. In this case the saw
will move uncontrolled and will be hurled towards the
operator at full power (risk of injury!).
In order to prevent kick-back, please follow these
safety instructions:
• Never start cutting with the tip of the guide bar!
• Never cut with the tip of the guide bar! Be careful,
when continuing cuts you are already working on!
• Always start cuts with the chainsaw already running!
• Make sure that the saw chain is always properly
sharpened.
• Never cut through more than one branch at a time!
When lopping off branches, be careful not to touch any
other branches.
• When cross-cutting, pay attention to trunks standing
very close to each other. If possible use a saw-horse.
4. Transporting the chainsaw
Before transporting the chainsaw, always remove the
plug from the power socket and slide the chain guard
over the rail and chain. If several cuts are to be
performed with the chain saw, the saw must be
switched off between cuts.
3

5. Intended Use
The power tool is intended for sawing wood such as
wooden beams, planks, branches, tree trunks, etc.,
and for sawing of trees. Cuts can be sawed with or
across the grain.
This power tool is not suitable for sawing mineral
materials.
6. Before starting up
The voltage and current supply must comply with
the ratings on the type plate. Before commencing
work, always check that
the chainsaw works
properly and is safe to operate. Check also that the
chain lubrication and the oil gauge are in good
working order (see Fig.4). When the oil lever is
approx. 5 mm from the bottom mark, you must top
up with oil. When the oil level is above this mark
you can work without worry. Switch on the chain
saw and hold it above the ground. Be careful not
allow the chainsaw to touch the ground. For safety
reasons it is best to keep a clearance of at least 20
cm. If you now see growing traces of oil, the chain
lubrication system is working correctly. If there are
no traces of oil at all, try cleaning the oil outlet (Fig
2, C), the upper chain tensioning borehole (E) and
the oil duct, or contact your Customer Service. (Be
sure to read the section “Filling in chain oil and
chain lubrication” on this point). Check the chain
tension and retention if necessary (see the section
“Tensioning the saw chain” on this point). Make
sure the chain brake is working properly (see also
the section “Releasing the chain brake”).
7. Technical Data
Specifications:
Voltage - 230-240V / 50Hz
Power -2400W
Chain Speed - 15m/s
Length of Blade -16 Inch
Engine Oil Tank Capacity -150ml
Cable Length -6m
Oregon Chain and Oregon Bar
With Quick Release Blade Function
8. Product Features
1. Rear grip
2. Front grip
3. Front finger guard / Chain break
4. Saw chain
5. SDS system
6. Guide bar cover
7. Guide bar
8. Rear finger guard
9. Power cable
10. Claw stop
11. Safety lock-off button
12. Cable hook
13. ON/OFF switch
14. Oil tank cap
15. Oil gauge
16. Chain wheel
17. Guide bolt
18. Chain tensioning bolt
4

5

6

7

9. Assembly
Assembling the guide bar and saw chain(Fig1,2,3)
The chainsaw must be unplugged.
Important:The front finger guard (3) must always
be in the top (vertical) position (Fig. 5).
The guide bar and saw chain are supplied
separately. To assemble, first unscrew the lock knob
(5) and remove the guide bar cover (6). The chain
tensioning bolt (18) must be in the center of the
guide. If necessary, adjust the chain tensioning bolt
with the screw (16). To prevent injury on the sharp
cutting edges, always wear gloves when assembling,
tensioning and checking the chain. Before
assembling the guide bar with the saw chain,
check the cutting direction of the teeth! The
running direction is marked with an arrow on the
Fig 1 (A). To determine the direction of cut, it may
be necessary to turn over the saw chain (4). Hold
the guide bar (7) vertically with the tip pointing
upwards and put on the saw chain (4) beginning at
the tip of the bar. Then assemble the guide bar with
the saw chain as follows: Place the guide bar with
the saw chain on the guide bolt (17) and chain
tensioning bolt (18). Place the saw chain round the
chain wheel (16) and make sure it is correctly
mounted (see Fig.3). Place the guide bar cover (6)
on top and tighten gently with the lock knob (5) by
hand. Now the saw chain has to be correctly
tensioned.
Tensioning the saw chain
Always pull the plug out of the power socket
before doing any work on the chainsaw!
Wear safety gloves!
Make sure the saw chain (4) is inside the guide groove
of the guide bar (7) (Fig.1 A)!
Turn the lock knob (5) clockwise by hand until the saw
chain is correctly tensioned. Do not tension the chain
too tightly. When cold, it should be possible to lift the
chain in the middle of the guide bar approx 5 mm.
Tighten the guide bar cover (6) securely.
When warm, the saw chain will expand and slacken
and there is a danger of it jumping off the rail
altogether. Re-tension if necessary. If the saw chain is
re-tensioned when hot, it must be loosened again when
the sawing work has been completed. Otherwise, the
contraction which takes place as the chain cools would
result in excessively high tension. A new saw chain
requires a running-in period of approx .5 minutes.
Chain lubrication is very important at this stage. After
running in, check chain tension and re-tension if
necessary.
10.Operation instructions
Filling in chain oil (Fig 4)
To prevent dirt getting inside the tank, clean the oil tank
cap (21) before opening. Check the contents of the oil
tank during sawing work by checking the oil gauge
(15). Close the oil tank cap tightly and wipe away any
spills.
Securing the extension lead (Fig 6)
Only use extension leads suitable for outdoor use. The
cross section of the cable (max. length of extension
cord: 75m) must be at least 1,5 mm2. secure the
chainsaw flex to the extension lead by inserting the
extension lead into the strain relief gap of the housing.
Extension leads longer than 30 m will reduce the
performance of the chainsaw.
Chain lubrication
To prevent excessive wear, the saw chain and guide
bar must be evenly lubricated during operation.
Lubrication is automatic. Never work without chain
lubrication. If the chain runs dry, the entire cutting
apparatus will quickly become severely damaged. It is
therefore important to check both chain lubrication and
the oil gauge every use (Fig. 4).
Never use the saw when the oil level is below the “Min.”
mark.
●
Min.: When only approx. 5 mm of oil is visible at
the lower rim of the oil gauge (15), you must top up
with oil.
●
Max.: Top up with oil until the window is full.
8

Checking the automatic lubrication
Before commencing work, check the automatic chain
lubrication and oil gauge. Switch on the chain saw and
hold it above the ground. Be careful not to allow the
chain saw to touch the ground. For safety reasons it is
best to keep a clearance of at least 20 cm. If you now
see growing traces of oil, the chain lubrication system is
working correctly. if there are no traces of oil at all, try
cleaning the oil outlet (Fig 2, C), the upper chain
tensioning borehole (E) and the oil duct, or contact your
Customer Service.
Chain lubricants
The service life of saw chains and guide bars depends
to a large extent on the quality of the lubricant used. Old
oil must not be used! Use only environment-friendly
chain lubricant. Store chain lubricant only in containers
which comply with the regulations.
Guide bar
The guide bar (7) is subjected to especially severe wear
and tear at the nose and the bottom. To avoid one-sided
wear and tear, turn the guide bar over every time when
you sharpen the chain.
Chain wheel
The chain wheel (16) is subjected to especially high
wear and tear. If you notice deep wear marks on the
teeth, the chain wheel must be replaced. A worn chain
wheel curtails the service life of the saw chain. Have the
chain wheel replaced by a specialist dealer or your
Customer Service.
Chain guard
The chain guard must be clipped onto the chain and
sword as soon as the sawing work has been completed
and whenever the chainsaw has to be transported.
Chain brake
In the event of kick-back, the chain brake (3) will be
actuated via the front finger guard. The front finger
guard is pushed forwards by the back of the hand and
this causes the chain brake to stop the chain saw, or
rather the motor, within 0.12 s (Fig 5, I).
Releasing the chain brake
(Fig 5)
To be able to use your chain saw again, you must
release the saw chain again. First switch off the
chainsaw. Then push the front finger guard (3) back
into the vertical position until it locks in place (Fig 5, H).
The chain brake is now fully functional again.
Sharpening the saw chain
You can have your saw chain sharpened fast and
correctly by specialist dealers, from whom you can also
obtain chain sharpening equipment to enable you to
sharpen the chain yourself. Please follow the
corresponding operating instructions.
Take care of your tools. Keep your tools sharp and
clean to enable you to work well and safely. Follow the
maintenance regulations and the
instructions for
changing tools
Starting up
Always wear safety goggles, ear muffs, protective
gloves and heavy-duty work clothes!
Use the saw only with approved extension cables with
the prescribed insulation and connections designed for
outdoor use (approved rubber-sheathed cables) which
fit the chainsaw plug. The chain saw is equipped with a
two-handed safety switch. The chainsaw works only
when one hand holds the front grip (2) and the other
hand actuates the switch on the rear grip (1) .
If the chainsaw does not run, the chain brake must be
released at the front finger guard (3). Be sure to read
the sections “Chain brake” and “ Releasing the chain
brake “ on this point.
After switching on, the chainsaw will run
immediately at high speed.
To switch off: Release either the ON/OFF switch (13)
on the rear grip or the other switch (2) on the rear grip.
The release of ON/OFF switch results the stop of the
chainsaw within 2sec., and heavy sparkling. This is
normal and safe for the proper operation of the
chainsaw.
9

After working with the chainsaw, you should
always: Clean the saw chain and guide bar and replace
the chain guard.
Chainsaw protection
Never use the chainsaw in the rain or in damp
conditions.
If the extension cable is damaged, pull the plug out
of the power socket immediately. Never work with a
damaged cable.
Check the chainsaw for damage. Before using your tool
again, check the safety devices or any slightly damaged
parts to ensure that they are in good working order.
Make sure the moving parts are working correctly. All
the parts must be correctly assembled and meet all the
conditions required to ensure that the chainsaw works
correctly. Any damaged safety devices and parts must
be properly repaired or replaced immediately by a
Customer Service workshop, unless there are
instructions to the contrary in these operating
instructions.
Notes on working practice
Kick-back (Fig 8)
You can avoid accidents by not sawing with the tip
of the guide bar as this may cause the saw to rear
up suddenly.
Always use the complete safety equipment and
clothes when working with the saw.
Kick-back is an upward and/or backward movement of
the guide bar which can occur if the saw chain at the tip
of the guide bar encounters an obstruction.
Make sure your work-piece is firmly secured. Use
clamps to stop the work-piece slipping. This also makes
it easier to operate the chainsaw with both hands.
Kick-back causes the saw to behave uncontrollably and
thus brings with a slack or blunt chain. A poorly
sharpened chain increases the risk of kick-back. Never
saw above shoulder height.
Tips on chain saw use
Sawing up wood (Fig 7a, 7b)
To saw up wood, please observe the safety regulations
and proceed as follows: Make sure the wood to be
sawed cannot slip. Clamp short pieces of wood in place
before sawing. Saw only wood or wooden objects.
When sawing, make sure that no stones or nails are
touched as these could be thrown out and damage the
saw chain. Avoid bringing the running saw into contact
with wire fences or the ground. When lopping off
branches, support the chainsaw as far as possible and
do not saw with the tip of the guide bar. Watch out for
obstacles such as tree stumps, roots, ditches and
hillocks as these could cause you to fall.
Remember:
The chainsaw must be running before it comes into
contact with the wood.
To switch on: Press the safety lock-off (2) and ON/OFF
switch on (13). Place the lowest claw (Fig 4, J) on the
wood . Raise the chain saw by the rear grip (2) and saw
into the wood. Move the chain saw back a little and
place the claw further down. Be careful when sawing
splintered wood as pieces of wood may be ripped off.
Wood under tension
Fig 11a: Top side of under tension
Danger: Tree will rear up!
Fig 11b: Bottom side of trunk under tension
Danger: Tree will move downwards!
Fig 11c: Thick trunks and high tension
Danger: Tree will move suddenly and with
immense force!
Fig 11d: Both sides of trunk under tension
Danger: Tree will move sideways.
Felling trees
To fell trees, observe all the safety regulations and
proceed as follows:
The chain saw may be used to fell only tress which are
smaller in diameter than the length of the motor still
running. If the saw chain gets jammed, release it using
a wooden wedge.
10

Remember:
Danger zone: Falling trees can bring down other trees
with them. The danger zone is therefore twice the length
of the tree being felled. (Fig, 12)
Felling trees is dangerous and requires practice. If
you are a beginner or inexperienced, do not try to
teach yourself but seek professional training.
(Fig, 13)
Falling direction:
●First estimate the direction of fall, taking into account
the centre of gravity of the crown and the wind direction.
The chain saw must be running before it comes into
contact with the wood. Switch on the chain saw. Saw an
undercut in the tree in the direction of fall and then make
a horizontal cut (back cut) on the side opposite to the
undercut.
●Make the undercut: This will give the tree a direction
and guidance.
●Check the direction of fall: If you have to correct the
undercut, always re-cut over the entire width.
●Call now “Timber! “
●Only now make the back cut, which must be higher
than the sole of the undercut. Insert wedges in time.
●Leave the bridge in place as it will function as a
hinge. If you cut through the bridge, the tree will fall
randomly.
●Fell the tree by driving a wedge into the back cut,
not by sawing through it .
When the tree falls, step back and watch the crown.
Wait for the crown to stop swinging. Do not continue
working under branches which have got stuck.
Do not fell trees:
●If you can longer distinguish details within the
danger zone, e.g. owing to fog, rain, snow drifts or
twilight.
●If the direction of fall cannot be reliably estimated
owing to wind or gusts of wind. Felling work on sloping
ground, black ice, frozen or dewy ground is safe only if
you can get a firm foothold.
To switch off: Pull the plug out of the power socket.
To fell the tree, you must drive a wedge into the back
cut. When retreating after making the back cut, watch
out for falling branches.
11. Maintenance and cleaning
Always pull the plug out of the power socket before
doing any work on the chainsaw!
Keep the cooling vents on the motor housing clean and
unobstructed at all times. Only the maintenance work
described in these operating instructions may be
carried out. Any other maintenance work must be
carried out by our Customer Service. Do not modify the
power saw in any way as this could jeopardize its
safety. Should the chainsaw fall despite our careful
manufacturing and inspection procedures, have it
repaired by an authorized Customer Service
work-shop. In the event of any inquiries and spare
parts orders, always quote the type designation and the
parts number.
Storage
Keep your chain saw in a safe place. The unused
chainsaw should be stored clean, on a flat surface and
in a dry place which is inaccessible to children
11

12
12.Trouble Shooting
The following table shows the types of breakdowns and indicates how you can correct it if your machine does
not function correctly. If in spite of this, you do not manage to locate the problem and solve it, contact your
after-sales service.
Caution: Before starting troubleshooting, stop the appliance and disconnect the power plug.
Problem Cause Solution
Motor does not run No electrictity Check socket, cable and plug.
Damaged cable: Have repaired by
customer service. It is prohibited to
patch the cable with insulating
tape.
Damaged switches have to be
replaced by a Customer Service
workshop.
Chain brake See section ”chain brake” and
“Releasing the chain brake”
Running out of carbon brush
Change the carbon brush, ask a
Customer Service workshop
Chain does not move Chain brake
Check the chain brake, release if
necessary.
Poor cutting performance Blunt chain Sharpen the chain
Chain tension Chain wrongly fitted
Check that the chain is fitted
correctly
Check the chain tension
Saw works only with
difficulty Chain jumps off
sword
Chain tension Check the chain tension
Chain becomes hot Chain lubrication Check oil level
Chain lubrication

13
Parts Diagram and Parts List

Parts Diagram and Parts List
No. Description No. Description
1 Front Handle 21 Right Housing
2 Label 2 22 Carbon Brush Insert
3 Front Finger Guard 23 Field Insert
4 Washer1 24 Inner Connecting Wire4
5 Left Housing 25 Capacitor
6 Swicth Trigger 26 Inner Connecting Wire2
7 Brake Block 27 Inner Connecting Wire1
8 Screw 28 Inner Connecting Wire3
9 Rivet 29 Spring
10 Adjust Board 30 Pull Rod
11 Saw Chain 31 Switch
12 Guide Bar 32 Micro switch
13 Blade Cover 33 Supply Cord
14 Spiked Pumper 34 Cord Sheath
15 Retaining Spring 35 Screw
16 Washer2 36 Cord Clamp Plate
17 Sprocket 37 Terminal Board
18 Shield 38 Torsional Spring
19 Warning Label 39 Label
20 Screw
Motor ASSY
1 Carbon Brush Holder 15 Extension Spring
2 Bearing 16 Oil Pump Core
3 Carbon Brush Cover 17 O Type Ring
4 Carbon Brush 18 Oil Pump Sets
5 Armature 19 Screw
6 Woodruff Key 20 Oil Pipe 1
7 Field 21 Rubber Gasket
8 Wind Screen 22 Oil Pump Housing
9 Brake Wheel 23 Oil Pipe 2
10 Bearing 24 Washer3
11 Shaft Sleeve 25 Pin
12 Small Gear 26 Block
13 Extension Spring 27 Motor Holder
14 Hinge 28 Big Gear
14

Parts Diagram and Parts List
No. Description No. Description
29 Output Bearing 41 Oil Tank
30 Bearing 42 O Type Ring
31 Cover Board 43 Rubber Sheath On Oil Tank
32 Screw 44 Oil Tank Cap
33 Rubber Ring 45 Micro switch
34 Sheath On Oil Tank 46 Screw
35 Ring 47 Rubber Cork
36 Spring 48 Brake Belt
37 Filter Screen Stopper 49 Spring Washer
38 Shaft Sleeve 50 Washer
39 Bearing 51 Screw
40 Bolt 52 Field Bolt
Quick Release ASSY
1 Knob2 6 Knob1
1-1 Nut 7 Label
2 Knob Cover Board 8 Chain Clamp Plate
3 Screw 9 Spiral Plate
4 Spring 10 Screw
5 Steel Ball
15