BBT BBT-5IN1-4ST User manual

1

2
Contents
WARNINGS..................................................................................................................................................... 3
Specifications.................................................................................................................................................. 5
Components.................................................................................................................................................... 6
Safety Precautions......................................................................................................................................... 7
Assembly Instructions.................................................................................................................................... 8
Operation Instructions..................................................................................................................................10
Maintenance & Storage............................................................................................................................... 12
Troubleshooting............................................................................................................................................ 15
Spare Parts....................................................................................................................................................16

3
WARNINGS
This symbol indicates important safety instructions which, if not followed,
could endanger personal safety and/or property. Read and follow all
instructions in this manual before attempting to operate this machine.
Failure to comply with these instructions may result in personal injury.
When you see this symbol—heed its warning.
Read the owner’s manual thoroughly before operating this machine.
Ensure that you understand and follow all instructions on the machine and
in the manual before attempting to assemble and operate.
Wear ear & eye protection when operating this machine.
Wear foot protection when operating this machine.
Wear safety gloves when operating this machine.
CARBON MONOXIDE GAS
Exhaust contains poisonous carbon monoxide, a colorless and odorless
gas. Breathing exhaust can cause loss of consciousness and may lead to
death.

4
This machine has a rotating cutting blade capable of amputating hands
and feet and throwing objects. Keep hands and feet out of openings while
machine is running. Failure to observe these safety instructions could
result in serious injury or death.
Beware of thrown objects, which can ricochet causing serious injury to the
eyes. Always wear eye & ear protection when operating.
15m
Keep bystanders, helpers, pets, and children at least 15m from the
machine while it is in operation. Stop machine if anyone enters the area.
Gasoline is extremely flammable and the vapors are explosive. Serious
personal injury can occur when gasoline is spilled on you or your clothing,
which can ignite. In the event of a gasoline spill, wash your skin and
change clothes immediately.
Never wear loose clothes or long jewelry and keep your long hair secured
when operating machine. Never operate this machine in bare feet or
sandals.
Never use machine on a slope or hard smooth floor.

5
Specifications
Model
BBT-5IN1-4ST
Engine Type
4-stroke
Overhead Camshaft
Single Cylinder
Displacement
36cc
Fuel Type
Unleaded
95 octane or higher
(do not use ethanol in this
machine)
Fuel Tank Capacity
Approx. 650ml
Fuel Consumption
360g / kWh
Oil Type
SAE30
Oil Capacity
Approx. 100ml
Starter Type
Recoil Start
Max. Output
1.2kw at 7,000 rpm
Max. Torque
1.9Nm at 5,500 rpm

6
Components

7
Safety Precautions
All users must ensure they understand how to operate all of the controls of the machine and
learn how to stop the engine quickly in case of an emergency. Also make sure the user
receives adequate instructions before operation.
Do not allow children to operate this machine and keep children and pets away from the
area when operating.
The engines exhaust contains carbon monoxide, which is poisonous. Do not run engine
without proper ventilation and never operate indoors.
During operation, the engine and exhaust become very hot so users must exercise caution
to avoid burns. Keep flammable materials away, and do not place anything on the engine
while running. Keep the engine at least 1 metre (3 feet) away from building and other
equipment during operation.
Read this user manual in full before attempting to operate this machine.

8
Assembly Instructions
BEFORE OPERATING THIS UNIT:
FUEL
We recommend that the use of ethanol fuels is avoided with your BBT four stroke engine. To get
the best possible performance from your engine, use premium unleaded fuel only.
It is also a good idea to drain the fuel and give the fuel tank a good clean out every 3 month
or after 25hrs of use.

9
ENGINE OIL
Oil is a major factor affecting the performance and service life of your BBT four stroke engine. Use
a high quality 4-stroke engine oil, we recommend SAE-30 for general use.
WARNING
Check the engine oil level before each use. Operating this unit
without sufficient oil will cause serious damage to the engine.

10
Operation Instructions
STARTING
THE ENGINE
1. To start a cold engine, move the choke lever to CLOSED (up position).
2. Prime the engine by pressing the primmer bulb a few times.
3. Ensure the switch on the handle of the first section of the machine is in the ON position.
4. Pull the pull- start out until you feel resistance, the pull firmly, returning the pull start cord to
return gently.
5. If the choke was engaged while starting the engine, slowly dis-engage the choke to the
CLOSED position as the engine begins to fire.

11
HOT RESTART
If the engine is operated at above ambient temperature, then turned off and allowed to sit for a
while, it may not start again on the first pull and the starting procedure may need to be restarted.
STOPPING THE ENGINE
To stop the engine in an emergency, simply flick the switch on the handle into the OFF position.
Although under regular condition you should fully release the throttle and wait until engine slows
down to idle speed before stopping the engine, as stopping the engine at full revs can be
damaging.

12
Maintenance & Storage
Each Use
Every
3 Months
or 25hrs
Every 6
Months
or 50hrs
Every 12
Months
or 100hrs
Every 2
Years or
300hrs
Engine
Check Oil
Level
X
Change Oil
X
Air Filter
Check &
Clean
X
Spark Plug
Replace
X
Nuts &
Bolts
Check &
tighten
X
Clutch
Shoes
Check
X
Fuel Filter
Check &
Clean
X
Replace if
necessary
X
Fuel Tank
Clean
X
Fuel Lines
Check &
replace if
necessary
X
Oil Lines
Check &
replace if
necessary
X
TUNE-UP SPECIFICATIONS
Item
Specification
Spark plug gap
0.60 - 0.70 mm
Idle Speed
3,100 ± 200 rpm
Valve Clearance
(cold)
IN: 0.08 ± 0.02 mm
EX: 0.11 ± 0.02 mm

13
AIR FILTER
A dirty air filter will restrict air flow to the carburettor, hindering engine performance. If operating in
dusty conditions, clean the air filter more often than specified in the maintenance schedule
WARNING
Operating the engine without an air filter element, or with a
damaged air filter element, will allow dirt to contaminate the
engine, causing rapid engine wear and voided warranty.
To inspect the air filter, press the latch on the top of the air filter cover to remove it. If upon
inspection the air filter is overly dirty, it should be cleaned or replaced.

14
SPARK PLUG
Removing the spark plug
1. Remove the top cover by loosening the
5mm bolt on top.
2. Disconnect the spark plug cap and
remove the spark plug with the
provided spark plug spanner.
3. Replace the plug if it is damaged or in very poor
condition. Clear away and grime that has built up
over the spark plugs terminals. When reinstalling
the plug, be sure it is tightened sufficiently as
loose spark plugs can overheat and damage your
engine.

15
Troubleshooting
ENGINE WILL NOT START
Possible Cause
Resolution
1. Check control positions
Choke open
Move lever to CLOSED position
unless the engine is warm
Engine switch in off position
Turn engine to on position
2. Check fuel
Out of fuel
Refuel
Bad fuel; engine has been
re-fuelled with bad petrol
Drain fuel tank & carburettor. Re-
fuel with fresh petrol
3. Check coil for spark
Faulty Coil
Remove spark plug & place into
coil lead (earth end of plug). Pull
units pull start; if there is no spark,
replace spark plug. Repeat start
sequence; if unit still does not run,
contact BBT Service.
4. Remove & inspect spark
plug
Spark plug faulty, grimy or
improperly gapped
Gap (0.6-0.7mm) or replace spark
plug
Spark plug is wet with petrol
(flooded engine)
Allow the spark plug to dry. After
drying, install the spark plug &
repeat start sequence
5. Contact BBT Service for Assistance
ENGINE LACKS POWER
1. Check air filter
Filter element restricted
Clean or replace filter element
2. Check fuel
Bad fuel; engine has been
re-fuelled with bad petrol
Drain fuel tank & carburettor.
Refuel with fresh Petrol
3. Check Oil level
Not enough or too much oil
Unit operates with 80-100ml of oil.
If you have over filled, drain & fill
to this level. If you do not have
enough, top up before proceeding
with start sequence.
4. Contact BBT Service for Assistance

16
Spare Parts

17
#
PART DESCRIPTION
QTY
#
PART DESCRIPTION
QTY
1
Screw M5*15
7
43
Gasket
1
2
Cylinder Cover
1
44
Carburettor
1
3
Screw M5*12
4
45
Cleaner Inside Cover
1
4
Cylinder Valve Cover
1
46
Screw M5*22
6
5
Oil Gas Separator
1
47
Filter Net
1
6
Inside Cover
1
48
Air Filter Cover
1
7
Screw M4*8
4
49
No1.Piston Ring
1
8
Rubber Cushion
1
50
No2.Piston Ring
1
9
Rubber Cushion
1
51
Oil Scraper Ring
2
10
Valve Spring Seat
2
52
Linder Ring
1
11
Valve Spring
2
53
Piston
1
12
Exhaust Valve Rocker
1
54
Crankshaft
1
13
Inlet Valve Rocker
1
55
Piston Pin
1
14
Rocker Pin
2
56
Oil Seat
1
15
Exhaust Rocker
1
57
Oil Scale
1
16
Inlet Rocker
1
58
O-Seal Ring 14*2.65
1
17
Synchronous Belt
1
59
Key 3*5*13
1
18
Cam Wheel
1
60
Oil Seal
1
19
Camshaft
1
61
Reed Valve
1
20
Start Reel
1
62
Magneto Rotor Comp
1
21
Starter
1
63
Nut M8
1
22
Admitting Gasket
1
64
Washer
2
23
Holding-Down Clip
1
65
Clutch
1
24
Muffler Baffle
1
66
Washer
2
25
Nut M5
4
67
Screw Pin
2
26
Double-Edged Bolt
2
68
Pin B4*8
4
27
Muffler
1
69
Magneto Cover
1
28
Muffler Baffle
1
70
Crankcase
1
29
Spark Plug
1
71
Screw M5*32
4
30
Cylinder
1
72
Fuel Tank Lid
1
31
Fastener
1
73
Air Admission Valve
1
32
Ignition Stator
1
74
Inside Cover
1
33
Screw M4*14
2
75
Shell Cover
1
34
Stopping Wire
1
76
Airproof Gasket
1
35
Exhaust Valve
1
77
Rubber Cushion
4
36
Inlet Valve
1
78
Fuel Tank Lid
1
37
Balancing Pressure Pipe
1
79
Plug
1
38
Holding-Down Clip
1
80
Fuel Return Pipe
1
39
O-Seal Ring
1
81
Fuel Suction Pipe
1
40
Screw M5*55
2
82
Filter
1
41
Admitting Pipe
1
83
Ring
2
42
Blast Pipe
1

18
#
PART DESCRIPTION
QTY
#
PART DESCRIPTION
QTY
1
Knob Bolts
1
14
Nut
4
2
Bolt
1
15
Bolt
4
3
Bolt Set
1
16
Bolt Set
1
4
Connector
1
17
Bolt
1
5
Joint
1
18
Bolt Set
1
6
Bearing
1
19
Cover Set
3
7
Snap Ring
1
20
Cover Suspension Seat
1
8
Snap Ring
1
21
Bolt Set
4
9
Oil-Retaining Bearing
3
22
Snap Ring
1
10
Aluminium Pole
1
23
Snap Ring
1
11
Drive Shaft
1
24
Bearing
1
12
Handle Assy
1
25
Snap Ring
1
13
Switch Assy
1
26
Drum
1

19
#
PART DESCRIPTION
QTY
#
PART DESCRIPTION
QTY
1
Oil-Retaining Bearing
3
17
Bolt
3
2
Liu Nails
1
18
Down Cover
1
3
Shaft
1
19
Up Cover
1
4
Inner Drive Shaft
1
20
Protect Cover
1
5
Reducer
1
21
Screw
1
6
Snap Ring
1
22
Bolt
2
7
Snap Ring
1
23
Cover
1
8
6000rs Bearing
3
24
Guard
1
9
Gear
1
25
Small Blade
1
10
Gear Box
1
26
Bolt
3
11
Gear
1
27
Bolt Set
1
12
Output Shaft
1
28
Bolt Set
1
13
6002rs Bearing
1
29
Bolt Set
1
14
Snap Ring
1
30
Cutter Head
1
15
Protect Cover
1
31
3t Blade
1
16
Spring Gasket
3