KISANKRAFT FarmBoy FB-BC4-8636 User manual

KisanKraft®
: www.kisankraft.com
: [e-mail]
: +91.80. 22178200
Page 36 of 36
Wide Range of Products for Every Need
For more information give MISSED CALL: 07676065555
Many of our products have BIS: ISI certification.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 1 of 36
User Manual
All ‘FarmBoy’ products are sold without any warranty or
guarantee. Please satisfy yourself before buying this product.
No returns, exchanges or refunds allowed.
Note: The purchase is not contingent upon a product demonstration. The
purchaser shall satisfy himself with the product, including any product
demonstration or verification of any function, before buying. KisanKraft
Limited or its authorized dealers, including online sellers, shall not be liable to
give any on-site demonstration after purchase of any of the product.
KisanKraft Limited
(Formerly known as KisanKraft Machine Tools P Ltd.)
Sri Huchhanna Tower, #4,1st Main,7-A Cross, Maruthi Layout, Dasarahalli,
HAF Post, Hebbal, Bangalore 560024,Karnataka,INDIA
♦Bangalore (HO) ♦ Ahmedabad ♦ Bhopal ♦ Bhubaneswar ♦ Coimbatore ♦
♦Guwahati ♦ Shimla ♦Hubli ♦ Hyderabad ♦ Jaipur ♦
♦Karnal ♦ Kolkata ♦ Lucknow ♦ Pune ♦ Raipur ♦

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 2 of 36
CONTENTS
Before Getting Started .................................................................................. 3
Symbols on the Machine............................................................................... 3
Warning Labels on the Machine ................................................................... 3
Safety Instructions ........................................................................................ 5
Application .................................................................................................. 10
Parts Description......................................................................................... 10
FB-BC-8642 / 8652............................................................................................... 10
FB-BC4-8636........................................................................................................ 11
Assembly ..................................................................................................... 13
FB- BC-8642 / 8652.............................................................................................. 13
FB - BC4 - 8636.................................................................................................... 16
Fuel Handling .............................................................................................. 17
Operation .................................................................................................... 18
Maintenance ............................................................................................... 22
Storage ........................................................................................................ 24
Transportation ............................................................................................ 24
Troubleshooting.......................................................................................... 25
Technical Specifications .............................................................................. 26
Parts Diagram & List- Engine (FB-BC-8642/52) ........................................... 27
Parts Diagram & List –Body (FB-BC-8642/52) ............................................ 29
Parts Diagram & List- Engine (FB-BC4-8636)............................................... 30
Parts Diagram & List- Body (FB-BC4-8636) ................................................. 33
KisanKraft®
PRODUCT RANGE
: www.kisankraft.com
: [e-mail]
: +91.80. 22178200
Page 35 of 36
KisanKraft has a large range of products to serve the farmers. A list of our products
is given below:
Brush Cutters and Accessories
Brush Cutter/Power Weeder
Backpack Brush Cutter
Tea Pruner
Pole pruner with Engine
Reaper Attachment
Blades-Circular
Blades (2 &3 points)
Baffle
Nylon Rope
Tap & Go
Chainsaws
Petrol Chainsaw
Electric Chainsaw
Chain Sharpening Machine
Engines and Water Pumps
Engine –Diesel-(Horizontal)
Engine –Diesel(Vertical)
Engine-Kerosene
Water Pump with Petrol Engine
Water Pump with Kerosene Engine
Water Pump with Diesel Engine
Hand Tools
Secateurs
Folding Saw
Garden Rake
Garden Shovel
Hedge Shear
Lopper
Telescopic Hedge Shear
Telescopic Lopping Shear
Tree Pruner
Telescopic Steel Pipe & Fruit Picker Bag
Sheep Shear
Garden Tools
Electric Pressure Washer
Hedge Trimmer
Lawn Mower (Electric, Petrol & Manual)
Leaf Blower
Cultivators and Accessories
Petrol and Diesel
Sprayers and Accessories
BatterySprayer
Portable Power Sprayer
Trolley Sprayer
Manual Knapsack Sprayer
Manual Pressure Sprayer
Rose Cans
Hose Crimping Machine
HTP Sprayer
HTP Delivery Hose
HTP Hose Reel
HTP Stand
HTP Gun / Lance(Brass Rod
Knapsack Power Sprayer
Mister / Duster / GranuelSpreader
HTP Sprayer Set with Diesel Engine
HTP Sprayer Set with Kerosene Engine
Fogging Machine
Milking Machine
Wood Shredder
Fodder Ensiling Chaff Cutter
Fodder Grinder Chaff Cutter
Fodder Mini Chaff Cutter
Harvester
Maize Sheller
Maize Sheller + Dehusker
Maize Combine Harvester
Onion Digger Carlotti Italy
Tea Leaf Harvester
Sugarcane Combine Harvester
Sugarcane Leaf Stripper
Transplanter and Post Hole Digger
Paddy Transplanter (2 & 8 Rows)
Transplanter-Vegetable & Tobacco
Post Hole Digger(4” to 14”Augers)

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 34 of 36
Part No
Part Name (Body)
Part No
Part Name (Body)
BA-4
Pinion
BF
Clutch Comp Assy
BA-5
N/A
BF-37
Clutch Drum
BA-6
Screw M5x28-Allen
BF-38
Stop Ring-35-inner
BA-8
Screw M5x12-Allen
BF-39
Bearing 6202-2RS
BA-9
Grease Nipple
BF-40
Stop Ring-15-Outer
BA-10
Gear Case
BF-41
Linker
BA-11
Blade Cover
BF-42
Rubber(Linker)
BA-12
Bearing 6000- 2 RS
BF-43
Stop Ring-40-Inner
BA-13
Gear
BF-44
Linker(outer Pipe)
BA-14
Gear Shaft
BF-45
6x30-Allen
BA-15
Bearing 6002-2 RS
BG
Safety Guard Assy
BA-16
Stop Ring-32-Inner
BG-49
Screw M5x12-Allen
BA-17
Holder-A
BG-51
Safety Guard Bracket
BA-18
Holder-B
BG-52
N/A
BA-19
N/A
BG-53
Scerw-ST4.2x16
BA-20
Nut M10-(L H)Nylon Flanged
BG-54
Guard
BB
Harness Assy
BG-56
Blade-Rope Cutter
BC
N/A
BH
Lever Assy
BC-22
Rubber Bush-Outer Pipe
BH-58
Buy #BH LEVER ASSY
BC-23
Oil Bearing-Outer Pipe
BH-59
Switch On/Off
BC-24
Drive Shaft
BH-60
Throttle Cable
BC-25
Outer Pipe With Bushes
BH-61
Clamp(Lever)
BD
Holder Assy
BH-62
Nut M-6
BD-28
Nut M-5
BH-62-1
Screw 6x20 Star
BD-29
Screw 5x20 Allen
BH-63
Screw 5x30 Star
BE
BH-64
Buy # LEVER ASSY
BE-30
Handle Rubber Cover
BH-65
BE-31
Right Handle
BH-66
BE-32
Screw M5x25-Allen
BH-67
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 3 of 36
Before Getting Started
Before using the machine for the first time be sure to read through this manual in order to
avoid wrong operation. Please preserve this manual properly so that it can provide you with
information whenever necessary.
Symbols on the Machine
For safe operation and maintenance, symbols are carved in relief on the machine.
According to these indications, please be careful not to make a mistake.
Warning Labels on the Machine
Warning / Attention
Danger: Risk of fire or
explosion
Read the
instruction manual
completely and
carefully before
using the tool.
Top speed of trimmer head
is 6600 min-1
Wear head, eye
and ear protection.
Top speed of blade is 7100
min-1
Wear protective
gloves.
The port to refuel the "MIX
FUEL"
Wear safety
footwear
The guaranteed noise level
Danger: Toughing
the rotating blade is
forbidden.
With this symbol the
manufacturer confirms that
this tool is in accordance
with applicable European
directives.

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 4 of 36
Beware of thrown
objects.
Hot surface: Risk of burn.
Keep away from
fire
Keep all children,
bystanders and helpers 15
meters away
from the brush cutter
Never modify your BrushCutter.
We won't warrant the machine, if you
use the remodeled BrushCutter or
you don't observe the proper usage
written in the manual
CHOKE OPERATION (FB - BC- 8642 / 8652)
Starting mode when the engine is hot (choke off).
Position: AIR CLEANER COVER
Starting mode when the engine is cold (choke on).
Position: AIR CLEANER COVER
CHOKE OPERATION (FB-BC4- 8636)
The direction to close the choke
Position:
AIR CLEANER COVER
The ·direction to open the choke
Position:
AIR CLEANER COVER
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 33 of 36
Parts Diagram & List- Body (FB-BC4-8636)
Part No
Part Name (Body)
Part No
Part Name (Body)
BA
Gear Case Assy
BE-33
Cap Up-Handle
BA-1
Stop Ring -26-Inner
BE-34
Bracket-Handle
BA-2
Stop Ring -10-Outer
BE-35
Cap Lower-Handle
BA-3
Bearing-6000-2RS
BE-36
Left Handle

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 32 of 36
KK-No
KK-Name
Qty
KK-No
KK-Name
Qty
E-27
Cylinder
1
E-73
Screw
E-28
Exhaust valve
1
E-74
Crankcase
1
E-29
Intake valve
1
E-75
Screw
E-30
Piston Pin
E-76
Screw
E-31
Circlip-Piston Pin
E-77
Fuel Tank
1SET
E-32
Gasket -Cylinder
Cover
E-78
Fuel Tank Lid
E-33
E-79
Stand (Fuel Tank)
1
E-34
Clip
1
E-80
Screw
E-35
Oil Pipe
1
E-81
Cushion fuel tank
1
E-36
Intake Manifold
1
E-82
Screw Ratchet
E-37
Breather Pipe
1
E-83
Arm Swing-Starter
E-38
Screw
E-84
Collar-Starter
E-39
Gasket Carburetor
1
E-85
Rope reel
E-40
Carburetor
1
E-86
Recoil spring
E-41
Air Filter Inside Cover
1
E-87
Starter cover
E-42
Screw
E-88
Guide Rope
E-43
Screw
E-89
Starter Rope
E-44
Screw
E-90
Screw
E-45
Air Filter Sponge
1
E-91
Screw
E-46
AIR Filter Out Side
Cover
1
E-92
Screw
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 5 of 36
IMPORTANT
If warning label peel off or become soiled and impossible to read, you should contact the
dealer from whom you purchased the product to order new labels and affix them in the
required location(s).
WARNING
Never modify your brush cutter. We won't warrant the machine, if you use the remodeled
brush cutter or you don't observe the proper usage written in the manual.
Safety Instructions
1. Read this manual carefully until you completely
understand and follow all safety and operating
instructions.
2. Keep this manual handy so that you may refer to it
later whenever any questions arise. Also note, if
you have any questions which cannot be
answered herein, contact the dealer from whom
you purchased the product.
3. Always be sure to include this manual when
selling, lending, or otherwise transferring the
ownership of this product.
4. Never allow children or anyone unable to fully
understand the directions given in the manual to
use the machine.
Working Condition
1. When using the product, you should wear proper
clothing and protective equipment.
(1) Helmet
(2) Ear protectors
(3) Protection goggles or face protector
(4) Thick work gloves
(5) Non-slip-sole work boots
2. And you should carry with you.
(1) Attached tools and files
(2) Properly reserved fuel
(3) Spare blade
(4) Things to notify your working area (rope,
warning signs)
(5) Whistle (for collaboration or emergency)
(6) Hatchet or saw (for removal of obstacles)

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 6 of 36
3. Do not wear loose clothing, jewelry, short trousers,
sandals, or go barefoot. Do not wear anything
which might be caught by a moving part of the unit.
Secure hair so it is above shoulder length.
Working Circumstance
1. Never start the engine inside a closed room or building.
Exhaust gases contain dangerous carbon monoxide.
2. Never use the product,
a) When the ground is slippery or when you can’t
maintain a steady posture.
b) At night, at times of heavy fog, or at any other times
when your field of vision might be limited and it would
be difficult to gain a clear view of the working area.
c) During rain storms, during lightning storms, at times of
strong or gale-force winds, or at any other times when
weather conditions might make it unsafe to use the
product.
Working Plan
1. You should never use the product when under the
influence of alcohol, when suffering from exhaustion or
lack of sleep, when suffering from drowsiness as a
result of having taken cold medicine or at any other
time when a possibility exists that your judgment might
be impaired or that you might not be able to operate
the product properly and in a safe manner.
2. When planning your work schedule, allow plenty of
time to rest. Limit the amount of time over which the
product is to be used continuously to somewhere
around 30~40 minutes per session, and take 10~20
minutes of rest between work sessions. Also try to
keep the total amount of work performed in a single
day under 2 hours or less.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 31 of 36
KK-No
KK-Name
Qty
KK-No
KK-Name
Qty
E-1
Screw
E-47
Clutch Bolt
2
E-2
Cover Engine
1 Set
E-48
Clutch shoe assy
1
E-3
Muffler Cover
E-49
Screw
E-4
Screw
E-50
Fan cover
1
E-5
Cylinder Cover
1
E-51
Screw
E-6
Filter Breather
1 Set
E-52
Screw
E-7
Valve spring retainer
2
E-53
Ignition coil
1
E-8
Valve spring
2
E-54
Fly wheel
1
E-9
Sparkplug
1
E-55
Piston Rings Set
1SET
E-10
Arm EX Valve Rocker
1
E-56
E-11
Nut & Screw Rocker
Adjusting
E-57
E-12
Arm In Valve Rocker
1
E-58
Piston
1SET
E-13
Rocker Shaft
1
E-59
Oil Seal 15x25x7
1
E-14
Screw
E-60
Bearing
1SET
E-15
Grommet(Cylinder
Cover)
1
E-61
Crankshaft
E-16
E-62
Bearing
E-17
Seal Valve Stem
1
E-63
Timing Belt Wheel
E-18
Stud
1SET
E-64
Plate Assy Oil Outlet
Valve
1
E-19
Air Guide Metal
1
E-65
Timing Belt
1
E-20
Muffler
1
E-66
Throw Oil Board
E-21
Nut
E-67
Oil Seal 10x20x5
1
E-22
Screw
E-68
E-23
Lifter Comp EX Valve
1
E-69
Starter reel
1
E-24
Pin Cam wheel
1
E-70
Starter Handle
1SET
E-25
Cam wheel
1
E-71
Starter assy
E-26
Lifter Comp In Valve
1
E-72
Screw

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 30 of 36
Parts Diagram & List- Engine (FB-BC4-8636)
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 7 of 36
WARNING
1. If you don’t observe the working time, or working
manner, Repetitive Stress Injury (RSI) could occur. If
you feel discomfort, redness and swelling of your fingers
or any other part of your body, see a doctor before
getting worse.
2. To avoid noise complaints, in general, operate product
between 8a.m. and 5p.m. on weekdays and 9a.m. to
5p.m. during Weekends.
NOTE:
Check and follow the local regulations as to sound level
and hours of operations for the product.
Before Starting the Engine
1. The area within a perimeter of 50 feet (15m) of the
person using the product should be considered a
hazardous area into which no one should enter. If
necessary, yellow warning rope, warning signs
should be placed around the perimeter of the area.
When work is to be performed simultaneously by two
or more persons, care should also be taken to
constantly look around or otherwise check for the
presence and locations of other people working so
as to maintain a distance between each person
sufficient to ensure safety.
2. Check the condition of working area to avoid any
accident by hitting hidden obstacles such as stumps,
stones, cans, or broken grass.
IMPORTANT
Remove any obstacle before beginning work.
3. Inspect the entire unit for loose fasteners and
fuel leakage. Make sure that the cutting
attachment is properly installed and securely
fastened.
4. Be sure the debris guard is firmly attached in
place.
5. If the cutting head is the metal blade, use the
shoulder strap. Adjust the strap for comfort
before starting the engine. The strap should be
adjusted so the left hand can comfortably hold
the handlebar grip approximately waist high

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 8 of 36
Starting the Engine
1. Keep bystanders and animals at least 50feet
(15m) away from the operating point. If you are
approached, immediately stop the engine.
2. The product is equipped with a centrifugal clutch
mechanism, so the cutting attachment begins to
rotate as soon as the engine is started by putting
the throttle into the start position. When starting
the engine, place the product onto the ground in
a flat clear area and hold it firmly in place so as
to ensure that neither the cutting part nor the
throttle come into contact with any obstacle
when the engine start.
WARNING: Never place the throttle into the
high speed position when starting the engine.
3. After starting the engine, check to make sure
that the cutting attachment stops rotating when
the throttle is moved fully back to its original
position. If it continues to rotate even after the
throttle has been moved fully back, turn off the
engine and take the unit to your authorized
servicing dealer for repair.
Using the Product
IMPORTANT
Cut only materials recommended by the manufacturer. And use only for tasks explained in
the manual.
1. Grip the handles firmly with both hands using your whole
hand. Place your feet slightly apart (slightly further apart
than the width of your shoulders) so that your weight is
distributed evenly across both legs, and always be sure to
maintain a steady, even posture while working.
2. Keep cutting attachment below waist level.
3. Maintain the speed of the engine at the level required to
perform cutting work, and never raise the speed of the
engine above the level necessary.
4. If the unit start to shake or vibrate, turn off the engine and
check the whole unit. Do not use it until the trouble has
been properly corrected.
5. Keep all parts of your body away from rotating cutting
attachment and hot surfaces.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 29 of 36
Parts Diagram & List –Body (FB-BC-8642/52)
Sl No.
Part Name
Qty
1.
Housing
1
2.
Bolt M5 x 25
8
3.
Bolt M5 x 12
2
4.
Bolt M6 x 25
1
5.
Nut M6
1
6.
Hanger Assy
7.
Right handle
1
8.
Bracket Assy
1
9.
Bolt M6 x 35
2
10.
Plate
1
11.
Aluminium pole
1
12.
Gearbox Assy
1
13.
3- Teeth blade
1
14.
Nylon head
1
15.
Blade
1
16.
Bolt M4 x 10
3
17.
Debris guard
1
18.
Driving shaft
1
19.
Shaft sleeve
6
20.
Left handle
1

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 28 of 36
Sl No.
Part Name
Qty
Sl No.
Part Name
Qty
1.
Bolt M5*25
4
31.
Cover, cylinder
1
2.
Sider Cover
1
32.
Bolt M5*12
2
3.
Screw M8
2
33.
Bolt M5*20
4
4.
Washer
2
34.
Washer
4
5.
Clutch
1
35.
Cylinder
1
6.
Washer
2
36.
Spark Plug
1
7.
Nut M8
1
37.
Gasket, cylinder
1
8.
Rotor
1
38.
Piston Ring
2
9.
Bolt M5*20
9
39.
Piston
1
10.
Coil
1
40.
Bearing K10*13*16
1
11.
Coil Assy
2
41.
Piston Pin
1
12.
Bolt M5*35
4
42.
Snap Ring
2
13.
Oil Seal
1
43.
Cover, Muffler
1
14.
Pin
4
44.
Bolt M5*12
1
15.
Left Crankcase
1
45.
Bolt M6*55
2
16.
Key
1
46.
Muffler
1
17.
Crankshaft
1
47.
Gasket, Muffler
1
18.
Bearing
2
48.
Gasket, Insulator
1
19.
Gasket, crankcase
1
49.
Insulator
1
20.
Right Crankcase
1
50.
Gasket, Carburetor
1
21.
Oil Seal
1
51.
Carburetor
1
22.
Pulley
1
52.
Body Assy
1
23.
Nut M8
1
53.
Element
1
24.
Alum Washer
1
54.
Plate
1
25.
Recoil Assy
1
55.
Bolt M5*55
2
26.
Rubber, Bracket Tank
1
56.
Cover
1
27.
Bracket Tank
1
57.
Cover, Air Filter
1
28.
Bolt M5*16
1
58.
Bolt M5*30
2
29.
Cover
1
59.
Fuel Tank
1
30.
Cable Clip
1
60.
Bracket Tank
1
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 9 of 36
6. Never touch the muffler, spark plug, or other metallic parts
of the engine while the engine is in operation or
immediately after shutting down the engine. Doing so
could result in serious burns or electrical shock.
If Someone Comes
1. Guard against hazardous situations at all times. Warn
adults to keep pets and children away from the area. Be
careful if you are approached. Injury may result from
flying debris.
2. If someone calls out or otherwise interrupts you while
working, always be sure to turn off the engine before
turning around
Maintenance
1. In order to maintain your product in proper working
order, perform the maintenance and checking
operations described in the manual at regular intervals.
2. Always be sure to turn off the engine before performing
any maintenance or checking procedures.
WARNING
The metallic parts reach high temperatures immediately
after stopping the engine.
3. Under no circumstances should you ever take apart the
product or alter it in any way. Doing so might result in
the product becoming damaged during operation or
the product becoming unable to operate properly
Handling Fuel
1. The engine of the product is designed to run on a mixed
fuel which contains highly flammable petrol. Never store
cans of fuel or refill the tank of the unit in any place
where there is a boiler, stove, wood fire, electrical
sparks, welding sparks, or any other source of heat or
fire which might ignite the fuel.
2. Never smoke while operating the unit or refilling its fuel
tank.
3. When refilling the tank, always turn off the engine and
allow it to cool down. Take a careful look around to
make sure that there are no sparks or open flames
anywhere nearby before refueling.
4. Wipe spilled fuel completely using a dry rag if any fuel
spillage occurs during refueling.
5. After refueling, screw the fuel cap back tightly onto the
fuel tank and then carry the unit to a spot 10feet (3m) or
more away from where it was refueled before turning on
the engine.

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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Page 10 of 36
Transportation
1. When hand-carrying the product, cover over the
cutting part if necessary, lift up the product and carry it
paying attention to the blade.
2. Never transport the product over rough roads over
long distances by vehicle without removing all fuel
from the fuel tank. If doing so, fuel might leak from the
tank during transport.
Application
If the Brush cutter is fitted with cutting string as trimmer as attachment, it is used for
cutting grass grown in park, garden and around tree or fence.
If the Brush cutter uses metal cutting blade as attachment, used for cutting grass, weed
or light plant.
When Brush cutter uses metal (TCT) cutting blade with paddyguard as attachment, used
for harvesting paddy, wheat and other cereal crops.
Note: Any other purpose not specified and permitted in this manual may damage device
and cause serious injury to the user. Do not use this device to cut thorn, shrub or bush.
The manufacturer shall not be responsible for damage caused by wrong operation.
Parts Description
FB-BC-8642 / 8652
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 27 of 36
Model
FB-BC4-8636
Displacement
35.8 cc
Engine
4-Stroke
Rated Power
0.9kW / (1.2hp) @ 6500 rpm
Net weight
7.5 kg
Accessories
3-teeth blade, Nylon head, single-shoulder belt, one-piece shaft
Parts Diagram & List- Engine (FB-BC-8642/52)

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: +91.80.22178200
Page 26 of 36
Technical Specifications
Model
FB-BC-8652
FB-BC-8642
Engine type
Air-cooled, 2-stroke
Equipment mobility
Hand-held
Maximum engine power
1.6kW (2.2 hp )
1.2kW (1.6 hp)
Engine displacement
52 cc
42.7 cc
Engine Max speed
10000 min-1
Engine idling speed
3000±300 min-1
Fuel Mixture
Petrol 25 : Oil 1
Volume of fuel tank
1.2 Liter
Starter
Recoil
Spark plug
LD-BM6A
Carburetor
Diaphragm type
Weight (without harness and petrol)
7.9 kg
Tested sound pressure level, LPA (2000/14/EC)
LPA: 107.7 dB(A), k=3 dB(A)
Guaranteed sound power level, LWA (2000/14/EC)
LWA: 113 dB(A), k=3 dB(A)
Vibration level
9.661m/s2, K=1.5 m/s2
Overall size (LxWxH)
1900 X 650 X 260 mm
Transmission
Centrifugal clutch, Rigid driveshaft
Cutting
Head rotating direction
Clockwise(Operator view) Standard
3 teeth blade thickness
2.0 mm
Cutting line diameter
2.4 mm
Note: Technical data is subject to change without prior notice.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: [e-mail]
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Page 11 of 36
1. Engine
2. Air cleaner cover
3. Choke lever
4. Recoil starter
5. Handle
6. Handle branket
7. Pipe
8. Throttle Trigger lever
9. Throttle lever
10. Switch
11. Protection shield
12. Protection shield plate
13. 3T blade
14. Line Head
15. Wrench
16. Angled bar
17. Spanner
18. Wrench
19. Harness
FB-BC4-8636
1. Handle
2. Shoulder strap hanger
3. Ignition switch
4. Throttle cable
5. Throttle lever
6. Throttle set button
7. Drive shaft housing
8. Debris guard
9. Cutting line head
10. Gear case
11. Spark arrester
12. Starter knob
13. Fuel tank
14. Primer pump
15. Choke lever
16. Air cleaner cover
17. Protector

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: +91.80.22178200
Page 12 of 36
1. Loop handle
2. Ignition switch
3. Throttle cable
4. Throttle lever
5. Drive shaft housing
6. Debris guard
7. Cutting line head
8. Bearing case
9. Spark arrester
10. Starter knob
11. Fuel tank
12. Primer pump
13. Choke lever
14. Air cleaner cover
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: [e-mail]
: +91.80.22178200
Page 25 of 36
2. Never transport the product over rough roads over long distances by vehicle without
removing all fuel from the fuel tank. If doing so, fuel might leak from the tank during
transport.
Troubleshooting
Case 1. Starting failure
Check
Probable cause
Action to be taken
Fuel tank
Incorrect fuel
Drain it and with correct fuel
Fuel filter
Fuel filter is clogged
Clean the fuel filter
Carburetor
adjustment screw
Out of normal range
Adjust to normal range
Sparking (no spark)
Spark plug is fouled/wet
Clean/dry the spark plug
Plug gap is incorrect
Correct (GAP: 0.6~0.7mm)
Spark plug
Disconnected
Retighten the spark plug
Case 2. Engine starts but does not keep running/Hard re-starting:
Check
Probable cause
Action to be taken
Fuel tank
Incorrect fuel or staled
fuel
Drain it and with correct fuel
Carburetor
adjustment screw
Out of normal range
Adjust to normal range
Muffler, cylinder
(exhaust port)
Carbon is built-up
Wipe away
Air cleaner
Clogged with dust
Wash
Cylinder fin, fan cover
Clogged with dust
Clean
When your unit seems to need further service, please contact your dealer or company
service center

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: [e-mail]
: +91.80.22178200
Page 24 of 36
Spark Plug:
Starting failure and misfiring are often caused by
a fouled spark plug. Clean the spark plug and
check that the plug gap is in the correct range.
For a replacement plug, use the correct type
Periodically clean the spark plug and check that
the spark gap is in the correct range.
IMPORTANT
Note that using any spark plugs other than those designated may result in the engine
failing to operate properly or in the engine becoming overheated and damaged.
• To install the spark plug, first turn the plug until it is finger tight, then tighten it a quarter
turn more with a socket wrench.
TIGHTENING TORQUE: 9.8~11.8 N.m
Muffler:
WARNING
Inspect periodically, the muffler for loose fasteners, any damage or corrosion. If any
sign of exhaust leakage is found, do not use the brush cutter and have it repaired
immediately.
Note that failing to do so may result in the engine catching on fire.
Intake Air Cooling Vent:
WARNING
Check the intake air cooling vent and the area
around the cylinder cooling fins after every 25
hours of use for blockage, and remove any waste
which has attached itself to the brush cutter.
IMPORTANT
If waste gets stuck and causes blockage around
the intake air cooling vent or between the cylinder
fins, it may cause the engine to overheat, and that
in turn may cause mechanical failure on the part of
the brush cutter
(1) Cylinder fin
(2) Intake air cooling vent (back)
Storage
Aged fuel is one of major causes of engine starting failure. Before storing the unit, empty
the fuel tank and run the engine until it uses all the fuel left in the fuel line and the
carburetor. Store the unit indoor taking necessary measures for rust prevention.
Transportation
1. When hand-carrying the product, cover over the cutting part if necessary, lift up the
product and carry it paying attention to the blade.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: [e-mail]
: +91.80.22178200
Page 13 of 36
Assembly
FB- BC-8642 / 8652
Installing Handle:
1. Loosen the 4bolts on the upper cap and insert
the handles equally. Retighten the bolts.
2. Put the handle assembly into the bracket and
put the upper cap over it. Tighten the cap
securely.
Connecting Throttle Wire:
1. Remove the air cleaner cover.
2. Connect the end of the throttle wire to the
joint on the top of the carburetor.
Connecting Switch Wires:
Connect the switch wires between the engine and
the main unit.
Pair the wires of the same color.
Installing Protection Shield:
Attach the protection shield with the bolts combined
to the shaft tube.

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: [e-mail]
: +91.80.22178200
Page 14 of 36
Installing Cutting Blade:
1. Put the angled bar (1) into the side holes
of the gear case (2) and the plate (3) so
as to fasten the axle.
2. Mount the blade (4) and the washer (5)
onto the axle.
3. Mount the washer (6) and the nut (7).
Fasten tightly anti-clockwise.
Installing Cutting Head:
1. Put the angled bar (1) into the side
holes of the gear case (2) and the plate
(3) so as to fasten the axle.
2. Mount the trimmer head (8) on the axle.
Fasten tightly anti-clockwise.
Note
Before using the trimmer head, mount the
trimmer knife (E) to protection shield (F) with 3
screws. When the machines is running, tap the
trimmer head on the ground, and trimmer line
will come out automatically. The trimmer knife
will cut and keep the trimmer line in the correct
length.
Connecting Cutting Attachment:
Insert the trimmer cutting attachment (b) into to
the main drive shaft (c) and tighten the knob (a)
on the split connector securely.
IMPORTANT
Align the cutting attachment into split connector
by locking it.
When difficult to engage, twist the shaft housing
slightly.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: [e-mail]
: +91.80.22178200
Page 23 of 36
Refilling Trimming Line:
1. For replacement line, use a diameter
of 2.4mm (.095in). The spool is
capable for a line up to 6m (20ft) on
the 10cm (4”) head. Avoid using a
larger line as it may cut down the
trimming performance.
2. Pinch the slotted area on the both
sides of the spool housing to unhook
the bottom cap.
3. Take out the spool and pull off the old
line. Put one end of new line through
the spool holes and pull it until the
length is equal between each part of
the line.
4. Wind up the line in the correct
direction as indicated on the spool.
5. Hook each end of the line in the slot
on the edge of the spool, and then
put the ends through the eyelets on
the housing. Make sure that the
spring and the washers are in place.
6. While holding the spool against the
housing, pull the line ends to release
them from the slot.
7. Line up the slot on the bottom cap
with the hook on the housing, press
the cap against the housing until it
clicks.
Air Filter:
The air filter, if clogged, will reduce the
engine performance. Monthly check and
clean the filter element in warm, soapy
water as required. Dry completely before
installing. If the element is broken or
shrunk, replace with a new one.
Note: In the adjacent fig:
(1) Air Filter
Fuel Filter:
When the engine runs short of fuel supply, check
the fuel cap and the fuel filter for blockage.
Note: In the adjacent fig:
(1) Fuel Filter

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 22 of 36
Cutting Method:
1. Use the front left side cutting.
2. Guide the blade from your right to left with it
tilted slightly to your left.
3. When mowing a wide area, start working from
your left end to avoid interference of cut grass.
4. The blade may be seized by weeds if the
engine speed is too low, or the blade cuts too
deep into weeds. Adjust the engine speed and
cutting depth according to the condition of
object.
WARNING
If the grass or other object gets caught in the blade, or if the unit starts to shake
or vibrate, turn off the engine and check the whole unit. Change the blade if it
has been damaged.
Turn off the engine and make sure the blade has completely stopped before
checking the blade, and removing any object got caught in.
Maintenance
WARNING
Always be sure to stop the engine before inspecting the brush cutter for
problems or performing maintenance.
Never alter the brush cutter or take the engine apart.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
: www.kisankraft.com
: [e-mail]
: +91.80.22178200
Page 15 of 36
Harness:
WARNING
ALWAYS WEAR THE PROVIDED HARNESS WHEN
USING THE MACHINE!
Always make sure the machine is hooked securely to
the harness. If you don't, you will be unable to control
the machine safely. This can result in injury to yourself
or others.
Never use a harness with a defective quick release or
any other damage.
How to Wear:
1. Wear the provided harness without twisted bands, with
the hanger on your right side.
(1) Hanger
Balance the Unit:
1. Hook your machine to the hanger.
2. Adjust the bands of the harness to have the blade
parallel to the ground when standing in your normal
working position to provide you most effectiveness
and comfort on operating the machine.
3. In order to prevent the hanger position to change
during operation, turn up the extra part of the band
from the buckle.
4. When correctly adjusted, check the correct working
of the harnesses' QUICK RELEASE.

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: [e-mail]
: +91.80.22178200
Page 16 of 36
Assembly
FB - BC4 - 8636
INSTALLING HANDLE:
Mount the handle 10 the shaft tube and clamp it at a location that is comfortable
to you.
INSTALLING DEBRIS GUARD:
This model pack with already installed debris guard.
Put the debris guard on the gear box, attach it with the screws and hardware
provided.
INSTALLING CUTTING HEAD:
This model pack with already installed cutting head.
While locking the gear shaft, by inserting the supplied tool into the upper holder on
the gear box, loosen and remove the hexagonal (left-handed)
Fit the line head assembly to the gear shah over the holders. Hand tighten it
securely.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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Adjusting the Line Length:
Your brush cutters is equipped with a semiauto type nylon line head that allows
the operator to advance the line without stopping the engine. When the line
becomes short, lightly tap the head on the ground while running the engine at
full throttle.
Each time the head is bumped, the line advance about 1 inch (25.4 mm). For
better effect, tap the head on bear ground or hard soil. Avoid bumping in thick,
tall grass as the engine may stall by overload.
Metal Blade Usage:
NOTE:
Choose a suitable recommended cutting
attachment according to the object to be cut.
WARNING
When sharpening, removing, or reattaching
the blade, be sure to wear thick, sturdy
gloves and use only proper tools and
equipment to prevent injury.
1. Check the bolt to fasten the blade
and be sure the bolt has no fault, and
no abrasion.
2. Be sure that the blade and the holder
have been fastened according to
instruction and the blade turns
smoothly without abnormal noise.
WARNING
The rotating parts fastened incorrectly
may cause serious accident to the
operator.
Make sure that the blade is not bent,
warped, cracked, broken or damaged.
If you find any error to the blade,
discard it and change new one.
By using the harness, hang the unit on
your right side. Adjust the harness
length so that the cutting head may
become parallel to the ground

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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: +91.80.22178200
Page 20 of 36
Except for an emergency, avoid stopping the engine while pulling the throttle lever.
Adjusting Idling Speed:
1. When the engine tends stop frequently at
idling mode, turn the adjusting screw
clockwise.
2. When the cutting head keeps rotating
after releasing the trigger, turn the
adjusting screw.
NOTE:
Warm up the engine before adjusting the
idling speed.
Trimmer Head Usage:
WARNING
1. Always wear eye protection such as safety goggles. Never lean over the
rotating cutting head. Rocks or other debris could be thrown into eyes and face
and cause serious personal injury.
2. Keep the debris guard attached in place at all times when the unit is operated.
Trimming Grass and Weeds:
Always remember that the TIP of the line does cutting. You will achieve better results by
not crowding the line into the cutting area. Allow the unit to trim at its own pace.
1. Hold the unit so the head is off the
ground and is tilted about 20 degrees
toward the sweep direction. (OP6)
2. You can avoid thrown debris by sweeping from your right to the left.
3. Use a slow, deliberate action to cut heavy growth. The rate of cutting motion will
depend on the material being cut. Heavy growth will require slower action than
will light growth.
4. Never swing the unit as hard as you are in danger of losing your balance or
control of the unit.
5. Try to control the cutting motion with the hip rather than placing the full workload
on the arm and hands.
6. Take precautions to avoid wire, grass and dead, dry, long-stem weeds from
wrapping around the head shaft. Such materials can stall the head and cause
the clutch to slip, resulting in damage to the clutch system if repeated
frequently.
FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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Page 17 of 36
BALANCE UNIT:
1. Put on the strap and attach the unit to strap.
2. Slide clamp up or down until unit balances
with head just touching on the ground.
Fuel Handling
WARNING
Petrol is very flammable. Avoid smoking or bringing any
flame or sparks near fuel.
Wipe up all spills before starting the engine.
Make sure to stop the engine and allow it cool before
refueling the unit.
Keep open flames away from the area where fuel is
handled or stored.
FB-BC-8642/8652 (2-Stroke):
IMPORTANT
Never use oil for 4 cycle engine use or water cooled 2-cycle engine.
Never use "FUEL WITH NO OIL (PURE PETROL)".
Never use fuel laced with water.
Mixed fuels which have been left unused for a period of one month or more may
clog the carburetor or result in the engine failing to operate properly. Put
remained fuel into an air-tight container and keep it in the dark and cool room.
Please ask for “mixed petrol for air-cooled 2-cycle engines” at your nearest gas
station, or use fuel made by putting unleaded petrol for automobiles and air-
cooled 2-cycle engine oil into a mixing container in accordance with the
following ratios and then shaking to mix well.

FarmBoy®
Agricultural Reaper (Baffle Type)
FB-BC-8642 / 8652
FB-BC4-8636
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Page 18 of 36
HOW TO MIX FUEL:
1. Measure out the quantities of petrol
and oil to be mixed.
2. Put some of the petrol into the
clean, approved fuel container
supplied.
3. Pour in the oil and agitate well.
4. Be careful that, if the agitation is
insufficient, there is an increased
danger of early piston seizing due to
abnormally lean mixture.
Mixing ratios:
When using commercially available 2-
cycle oil: 25:1
(40 ml of oil for every 1 liter of petrol)
FB-BC4-8636 (4-Stroke):
This engine should be lubricated by oil specially formulated for air-cooled 4-
cycle petrol engine use. Use quality oil meant for air-cooled 4-cycle engine use.
It is recommended to use pure petrol and 20W40 grade oil. If you use petrol
with a lower octane value than prescribed, there is a danger that the engine
temperature may rise and an engine problem such as piston seizing may
consequently occur.
These engines are certified to operate on unleaded petrol as they reduce the
contamination of the air for the sake of your health and the environment.
Poor quality petrol or oil may damage sealing rings, fuel lines or fuel tank of the
engine.
FUELING THE UNIT:
1. Untwist and remove the fuel cap. Rest the cap on a dustless place.
2. Pour fuel into the fuel tank to 80% of the full capacity.
3. Fasten the fuel cap securely and wipe up any fuel spillage around the unit.
4. Fill 60-80 ml oil into the oil tank. (in case of 4-stroke engine)
WARNING
1. Select bare ground for fueling.
2. Move at least 10ft (3m) away from the fueling point before starting the engine.
3. Stop the engine before refueling the unit.
4. In the case of storing the product for a long period of time, clean the fuel tank
after rendering it empty. Next, activate the engine and empty the carburetor of
the composite fuel.
Operation
Starting the Engine:
WARNING
The cutting head will start rotating upon the engine starts.
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1. Feed fuel into the fuel tank and tighten the cap securely.
2. Rest the unit on a flat, firm place. Keep the cutting head off the ground and
clear of surrounding objects as it will start rotating upon starting of the engine.
3. Push the primer pump several times until
overflown fuel flows out in the return tube.
4. Move the choke lever to the closed position.
Note:In the adjacent figure,
(1) Choke lever
(2) Closed position
(3) Open position
OP3
5. Set the ignition switch to the “start” position.
While pulling the throttle lever, push the
throttle set button, and release the throttle,
then the throttle lever is into the “Start
position.
Note:In the adjacent figure,
(A) Stop position
(B) Start position
6. While holding the unit firmly, pull out the
starter rope quickly until engine fires.
IMPORTANT
Avoid pulling the rope to its end or returning it
by releasing the knob. Such actions can
cause starter failures.
7. Move the choke lever to the open position (OP2). And pull out the starter rope
quickly to restart engine. (OP4)
8. Allow the engine to warm up for several minutes before starting operation.
NOTE
1. When restarting the engine immediately after stopping it, leave the choke open
(OP2) and push the primer pump several times (OP4).
2. Over choking can make the engine hard to start due to excess fuel. When the
engine failed to start after several attempts, open the choke and repeat pulling
the rope, or remove the spark plug and dry it.
Stopping the Engine:
1. Release the throttle lever and run the engine for a half minute.
2. Shift the ignition switch to the STOP position. (OP3)
NOTE