Harbor Freight Tools Predicator 212cc User manual

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Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference. 21j
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©2021 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service ma y n o t b e i n c l u d e d .
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

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Specifications ...............................................................2
Safety ...........................................................................3
Setup ............................................................................6
Installation ....................................................................8
Maintenance................................................................ 11
Troubleshooting........................................................... 14
Parts List and Diagrams .............................................. 16
Limited 90 Day Warranty .............................................20
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Displacement 212 cc
Engine Type Horizontal Single Cylinder
4-stroke
Cooling System Forced air cooled
Fuel Type 91+ octane stabilizer-treated
unleaded gasoline
Engine Oil Type SAE 10W-30 High quality synthetic oil
Capacity 0.63 Quart
Bore x Stroke 70 mm x 55 mm
Compression Ratio 8.5:1
Torque Specification for
Cylinder Head Bolts 26 – 30 Nm (19 – 22 ft-lb)
Rotation viewed from PTO
(power takeoff - the output shaft) Counterclockwise
Spark Plug Type Torch ®F7TC
Gap 0.023" – 0.031"
Valve Clearance Intake 0.003" – 0.005"
Exhaust 0.005" – 0.007"
Speed Idle 1600 RPM
Maximum 6000 RPM
Shaft
Shaft Ø0.75" x 2.43"
Keyway 1.79" for 0.188" Key
End Tapped 5/16" – 24 UNF
THIS ENGINE IS FOR COMPETITION USE ONLY. INSTALLING THIS ENGINE IN ANY DIFFERENT
APPLICATION MAY BE A VIOLATION OF FEDERAL LAW SUBJECT TO CIVIL PENALTY.
This Engine is for competition only and is exempt from emission standards and related requirements.

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This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
JL5+&7%P*2"8"$"&8#
JL5+&7 W(&/*($L%&(%J$,$*5*8$
MWH Revolutions Per Minute
[W Horsepower
WARNING marking concerning
Risk of Eye Injury. Wear ANSI-approved
safety goggles with side shields.
Read the manual before
set-up and/or use.
WARNING marking concerning
Risk of Hearing Loss.
Wear hearing protection.
JL5+&7 W(&/*($L%&(%J$,$*5*8$
WARNING marking concerning
Risk of Respiratory Injury.
Operate engine OUTSIDE and far away
from windows, doors, and vents.
WARNING marking concerning
Risk of Fire while handling fuel.
Do not smoke while handling fuel.
WARNING marking concerning
Risk of Fire.
Do not refuel while operating.
Keep flammable objects
away from engine.
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1. Gasoline fuel and fumes are flammable, and
potentially explosive. Use proper fuel storage
and handling procedures. Do not store fuel
or other flammable materials nearby.
2. Have multiple ABC class fire extinguishers nearby.
3. Operation of this equipment may create sparks that
can start fires around dry vegetation.
A spark arrestor may be required. The operator
should contact local fire agencies for laws or
regulations relating to fire prevention requirements.
4. Set up and use only on a flat, level,
well-ventilated surface.
5. Wear ANSI-approved safety goggles, heavy-duty
work gloves, and dust mask/respirator during set up.
6. Use only lubricants and fuel recommended
in the Specifications chart of this manual.

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Engine exhaust contains
carbon monoxide. This is a poison
you cannot see or smell.
NEVER use inside a home or garage,
EVEN IF doors and windows are open.
Only use OUTSIDE and far away from windows,
doors, and vents.
2. Keep children away from the equipment,
especially while it is operating.
3. Keep all spectators at least six feet
from the Engine during operation.
4. Fire Hazard! Do not fill fuel tank while engine is
running. Do not operate if gasoline has been spilled.
Clean spilled gasoline before starting engine.
Do not operate near pilot light or open flame.
5. Do not touch engine during use.
Let engine cool down after use.
6. Never store fuel or other flammable
materials near the engine.
7. Only use a suitable means of transport and
lifting devices with sufficient weight bearing
capacity when transporting the engine.
8. Secure the engine on transport vehicles to
prevent it from rolling, slipping, and tilting.
9. Industrial applications must follow
OSHA requirements.
10. The engine can produce high noise levels.
Prolonged exposure to noise levels
above 85 dBA is hazardous to hearing.
Wear ear protection when operating the or
when working nearby while it is operating.
11. Wear ANSI-approved safety glasses
and hearing protection during use.
12. People with pacemakers should consult their
physician(s) before use. Electromagnetic fields in
close proximity to a heart pacemaker could cause
pacemaker interference or pacemaker failure.
Caution is necessary when near the
engine’s magneto or recoil starter.
13. Use only accessories that are recommended
by Harbor Freight Tools for your model.
Accessories that may be suitable for one
piece of equipment may become hazardous
when used on another piece of equipment.
14. Do not operate in explosive atmospheres,
such as in the presence of flammable
liquids, gases, or dust. Gasoline-powered
engines may ignite the dust or fumes.
15. Stay alert, watch what you are doing and use
common sense when operating this engine.
Do not use while tired or under the influence
of drugs, alcohol or medication.
16. Dress properly. Do not wear loose clothing or
jewelry. Keep hair, clothing and gloves away
from moving parts. Loose clothes, jewelry or
long hair can be caught in moving parts.
17. Parts, especially exhaust system components,
get very hot during use. Stay clear of hot parts.
18. Do not cover the engine during operation.
19. Keep the engine and surrounding
area clean at all times.
20. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.
21. Use the equipment, accessories, etc., in
accordance with these instructions and in the
manner intended for the particular type of
equipment, taking into account the working
conditions and the work to be performed.
Use of the equipment for operations different from
those intended could result in a hazardous situation.
22. Do not operate the equipment with known
leaks in the engine’s fuel system.
23. When spills of fuel or oil occur, they must be
cleaned up immediately. Dispose of fluids and
cleaning materials as per any local, state, or
federal codes and regulations. Store oil rags in
a bottom-ventilated, covered, metal container.
24. Keep hands and feet away from moving parts.
Do not reach over or across
equipment while operating.
25. Before use, check for misalignment or binding of
moving parts, breakage of parts, and any other
condition that may affect the equipment’s operation.
D2%9,5,3*9N%.,Q*%$.*%*R'"/5*8$%#*(Q"4*9%
+*2&(*%'#"831 Many accidents are caused
by poorly maintained equipment.
26. Use the correct equipment for the application.
Do not modify the equipment and do not use the
equipment for a purpose for which it is not intended.

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2. Keep all safety guards in place and in
proper working order. Safety guards include
muffler, air cleaner, mechanical guards,
and heat shields, among other guards.
3. Wear ANSI-approved safety goggles,
heavy-duty work gloves, and
dust mask/respirator during service.
4. Maintain labels and nameplates on the equipment.
These carry important information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
5. Have the equipment serviced by a qualified repair
person using only identical replacement parts.
This will ensure that the safety of the equipment
is maintained. Do not attempt any service or
maintenance procedures not explained in this
manual or any procedures that you are uncertain
about your ability to perform safely or correctly.
6. Store equipment out of the reach of children.
7. Follow scheduled engine and
equipment maintenance.
M*2'*7"83-
1. Do not refill the fuel tank while the
engine is running or hot.
2. Do not smoke, or allow sparks, flames,
or other sources of ignition around the
equipment, especially when refuelling.
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Leave a little room for the fuel to expand
as needed.
4. Refuel in a well-ventilated area only.
5. Wipe up any spilled fuel and allow excess
to evaporate before starting engine.
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The preparation of this Engine for competitive events and sanctioned racing requires specific,
specialized skill and knowledge. This preparation must be completed before starting or
operating the engine. If you are uncertain about your ability to perform any procedures in
this manual safely or correctly have the work performed by a qualified mechanic.
At high altitudes, the Engine’s carburetor, governor (if so equipped), and any other parts that control
the fuel-air ratio will need to be adjusted by a qualified mechanic to allow efficient high-altitude
use and to prevent damage to the Engine and any other devices used with this product.
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Inspect Engine and components (components not included) which will be installed on
Engine looking for damaged, loose, and missing parts before installation, set up and
starting. If any problems are found, do not use equipment until fixed properly.
B&$*- For additional information regarding the parts listed in the following pages,
refer to Parts List and Diagrams on page 16.
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1. Using a motor mount plate specifically designed
for the go-kart frame to be used (both not
included), install the motor mount onto the
frame. Secure in place using hardware supplied
with the motor mount (not included).
2. Align the mounting holes on the Engine
Installation Plate with the four mounting
bolts on the motor mount plate.
3. Lower Engine onto motor mount and secure
in place with hardware supplied with the motor
mount (not included). Refer to motor mount
installation instructions for torque specifications.
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1. Install the Exhaust Port Gasket
onto the exhaust port studs.
2. Attach the exhaust pipe/muffler (not
included) to the studs using two spring
washers and two M8 nuts.
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1. Mount the fuel pump (not included) onto the Fuel
Pump Installation Plate located on top of the Engine.
Secure pump in place using two M6 x16 bolts.
2. There are three tubes (not included)
that attach to the fuel pump:
a. Inlet fuel line from fuel tank (tank not included).
b. Outlet fuel line to Carburetor.
c. Low pressure pulse tube that is attached
to the Pulse Connector (not included).
When installing ensure that these tubes are
routed to avoid heat and sharp edges.
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1. Locate the fuel line connector on the Carburetor.
2. Attach the outlet fuel line from the fuel pump
(not included, see 2.b. under Install Fuel Pump)
to the connector on the Carburetor. Route
Carburetor drain hose to safe drain area.
B&$*- Ensure that the drain hose is
routed to avoid heat and abrasion.
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1. Install an air filter using a filter clamp (both
not included) to the Carburetor inlet.
2. Connect one end of a throttle cable (not included)
to the Carburetor slide. Connect the other
end to the throttle on the go-kart frame.
B&$*- This engine is not equipped with a governor.
Install a throttle return spring before use.
3. Insert one end of an oil breather tube (not
included) into the hole on the Valve Cover.
Route the other end of the tube to an overflow
can (not included). If necessary, attach an
extension tube (not included) to the end of the
oil breather tube to reach the overflow can.
B&$*- Ensure that oil breather flow is
not restricted by tubing or overflow can,
which must be vented to atmosphere.
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