Super Handy GUO077 User manual

REV 04/23/21
20 TON Gas Powered Hydraulic Log Splitter
Instruction Manual
WARNING:
Read carefully and understand all INSTRUCTIONS before operating. Failure to follow the safety
rules and other basic safety precautions may result in serious personal injury.
Save these instructions in a safe place and on hand so that they can be read when required.
Keep these instructions to assist in future servicing.
SKU# GUO077

1
INDEX
TECHNICAL SPECIFICATIONS ---------------------------------------------------------------------------------------------------------- 1
SAFETY DEFINITIONS ---------------------------------------------------------------------------------------------------------------------- 2
SAFETY SYMBOLS ----------------------------------------------------------------------------------------------------------------------- 2~3
SAFETY GUIDELINES ------------------------------------------------------------------------------------------------------------------- 4~5
FUEL SAFETY -------------------------------------------------------------------------------------------------------------------------------- 5
CONTROLS AND FEATURES ----------------------------------------------------------------------------------------------------------- 6
PARTS LIST ----------------------------------------------------------------------------------------------------------------------------------- 6
ASSEMBLY --------------------------------------------------------------------------------------------------------------------------------- 7~8
EXPANDED DRAWINGS ------------------------------------------------------------------------------------------------------------------ 9
OPERATION ----------------------------------------------------------------------------------------------------------------------------- 10~11
MAINTENANCE AND STORAGE ------------------------------------------------------------------------------------------------------ 11
TROUBLE SHOOTING -------------------------------------------------------------------------------------------------------------------- 11
TECHNICAL SPECIFICATIONS
Maximum Exerted Splitting Force
Engine Specifications
Starter Type
Cycle Time
Gear Pump
Control Valve
Max. Pressure
Hydraulic Cylinder
Hydraulic Cylinder Stroke Length
Max Log Length
Max Log Width
Hydraulic Fluid Type
Hydraulic Fluid Tank Capacity
Engine Oil Guide
Engine Oil Capacity
Fuel Type
Fuel Tank Capacity
Wheel Diameter
Net Weight
Overall Dimensions(L x W x H)
Low Oil Shut-off
Emissions
20 (US tons)
7.0HP / 209CC
Recoil Start
7.5 Seconds
11 GPM
Detent (auto-return)
3000 PSI（21Mpa）
3.5"
16"
20.5"
16"
AW32, AW46
1.6 Gallon (6L)
SAE 15W-40 is recommended for general use.
Other viscosities shown in the chart may be
used when the average temperature in your
area is within the indicated range.
0.145Gallon (0.55L)
87 octane gasoline with NO ethanol content
NOTE: If using an ethanol blended fuel, a fuel stabilizer, mixed to manufacturer
specifications recommended (See engine manual)
0.74 Gallon (approx. 2.8L)
10"
132LB
46.38" x 25.59" x 34.05"（Assembled）
Yes
EPA/CARB

22
SYMBOL MANING
Read Operator’s Manual in its entirety.To reduce the risk of injury, user must read
and understand operator’s manual before using this product.
Eye and Ear Protection. Always wear safety goggles or safety glasses with side
shields, and as necessary a full face-shield as well as full ear protection when
operating this product.
Footwear. Always wear safety shoes or work boots when operating the machine.
Sandals and slippers or open toe shoes or any type are strongly discouraged.
Gloves. Always wear nonslip, heavy-duty protective gloves when operating
this product.
Safety Alert. Precautions that involve your safety.
Risk of Fire. Fuel and its vapors are extremely flammable and explosive. Fire can cause
severe burns or death. Do not add fuel while the product is operating or still hot. Shut
down the unit and wait for unit to cool before refilling the fuel, oil, or hydraulic fluid tanks.
Skin Injection Hazard. Hydraulic oil under high pressure can penetrate your clothes
skin. Make sure all fittings are fully seated and tightly secured before applying pressure.
Relieve system pressure before servicing.
Always keep hands away from the wedge and the ram.
Moving parts can crush or cut.
SAFETY DEFINITIONS
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their explanations,
deserve your careful attention and review. The safety warnings do not by themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper accident prevention measures and care while using the product.
SAFETY SYMBOLS
Some of the following symbols are used on this product. Please study them and learn their meanings. Proper interpretation of
these symbols will help you to operate the product in a safe and responsible manner.

3
SYMBOL MANING
Always keep feet away from the wedge and the ram. Moving parts can crush
or cut.
Hot Surface. To reduce the risk of injury or damage, avoid contact with any hot
surface.
Open Flame alert. Fuel and its vapors are extremely flammable and explosive.
Keep fuel away from open flames, sparks, pilot lights, heat, and other potential
ignition sources.
Hold logs on sides when loading. Keep hands and feet away from cylinder,
wedge, and partially split logs.
Never place hands or any part of the body between a log and any part of the
log splitter.
Do not split logs against the grain. Split logs end to end in the direction of the
grain only.
Toxic Fumes. The engine exhaust from this product contains chemicals known
to the state of California to cause cancer and birth defects and other
reproductive harm.
Risk of Asphyxiation. This engine emits carbon monoxide, an odorless, colorless
poison gas. Breathing carbon monoxide can cause nausea, fainting or death.
Use only in a well ventilated area. DO NOT use indoors (garage or shed or any
enclosed area).
Clearance. Keep all objects including others at least 10 feet (3m) from this
machine.
Only one person should operate the log splitter and load the logs.
Never operate on an incline. Make sure the splitter is on a level surface. Block
tires and ensure support leg is secure to prevent unintended movement of the
log splitter during operation.

44
DANGER indicates a hazardous situation which, if not avoided,will result in serious injury and possibly death.
WARNING indicates a potential hazardous situation which, if not avoided, could result in serious injury or death.
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE indicates information considered important, but not hazard-related (e.g., messages relating to property
damaged).
SAFETY GUIDELINES
Cancer and Reproductive Harm – www.P65Warnings.ca.gov
Log splitter engine exhaust contains carbon monoxide, a colorless, odorless, poison gas. Breathing carbon monoxide will
cause nausea, dizziness, fainting or death.
If you start to feel dizzy or weak, get to fresh air immediately.
Using an engine indoors CAN KILL YOU IN MINUTES. 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.
Install battery-operated carbon monoxide alarms or plug-in carbon monoxide alarms with battery back-up according to the
manufacturer’s instructions to protect your home and loved ones from possible harm.
Moving parts can entangle hands, feet, hair, clothing and/or accessories. Traumatic amputation or severe laceration can result.
Keep hands and feet clear moving parts. Tie up long hair and remove jewelry before operating the device. Operate equipment
only fully assembled and with guards in place.
DO NOT wear loose-fitting clothing, dangling drawstrings or items that could become caught.
Operation of this equipment may create sparks that can start fires around dry vegetation.
Spark arrestor may be required. The operator should contact local fire agencies for laws or regulations relating to fire preven-
tion requirements.
Running engines produce heat. Severe burns can occur on contact. Combustible material can catch fire on contact.
DO NOT touch hot surfaces.
Avoid contact with hot exhaust gases.
Allow equipment to cool before touching.
Maintain at least 3 ft. (91.4 cm) of clearance on all sides to ensure adequate cooling.
Maintain at least 5 ft. (1.5 m) of clearance from combustible materials.
Crush Hazard
Wedge can cut through skin and break bones and in extreme cases amputate limbs and digits. Keep all limbs away from
wedge and endplate at all times.
Skin Injection Hazard. High pressure hydraulic oil can break skin and cause sever injury.
Make sure all fittings are seated firmly and tightly secured before applying pressure. Relieve system of pressure before
servicing.

5
Rapid retraction of the starter cord will pull hand and arm towards the engine faster than you can let go. Unintentional startup
can result in entanglement, traumatic amputation or laceration. Broken bones, fractures, bruises or sprains could result.
When starting engine, pull the starter cord slowly until resistance is felt and then pull rapidly to avoid kickback.
Parts of the hydraulic circuit (cylinder, pump, valve-body, hoses) can become very hot during operation.
This product IS NOT intended to to be towed behind a vehicle of any sort. The handle and wheels of the product are intended
for the sole purpose of easily moving the log splitter on your work site. Any modification or changes to allow moving of this
product by any other means other than by hand will render all warranties null and void.
Improper treatment or use of the log splitter can damage it, shorten its life and void your warranty.
Use the log splitter only for intended uses.
Operate only on level surfaces.
DO NOT expose log splitter to excessive moisture, dust, or dirt. Cover with a tarp or store in a shed when not in use.
DO NOT allow any material to block the cooling vents.
DO NOT use product if you observe engine if:
– Equipment sparks, smokes or flames from the motor
– Equipment vibrates excessively.
– Hydraulic Fluid is leaking from the unit
FUEL SAFETY
GASOLINE AND GASOLINE VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE.
Fire or explosion can cause severe burns or death.
When adding or removing gasoline:
Turn the engine off and let it cool for at least two minutes before removing the gasoline cap. Loosen the cap slowly to relieve
pressure in the tank.
Only fill or drain gasoline outdoors in a well-ventilated area.
DO NOT pump gasoline directly into the engine at the gas station.
Use an approved container to transfer the fuel to the engine.
DO NOT overfill the gasoline tank.
Always keep gasoline away from sparks, open flames, pilot lights, heat and other sources of ignition.
DO NOT light or smoke cigarettes while fueling.
When starting the engine:
DO NOT attempt to start a damaged engine.
Make certain that the gasoline cap, air filter, spark plug, fuel lines and exhaust system are properly in place.
Allow spilled gasoline to evaporate fully before attempting to start the engine.
Make certain that the log splitter is resting firmly on level ground.
When operating the log splitter:
DO NOT move or tip the log splitter during operation.
DO NOT tip the log splitter or allow fuel or oil to spill.
When transporting or servicing the log splitter:
Make certain that the fuel valve is in the OFF position, the gasoline tank is empty.
Disconnect the spark plug wire.
When storing the log splitter:
Store away from sparks, open flames, pilot lights, heat and other sources of ignition.
Do not store log splitter or gasoline near furnaces, water heaters, or any other appliances that produce heat or have automatic
ignitions.
NEVER use a gasoline container, gasoline tank, or any other fuel item that is broken, cut, torn or damaged.

6
2
9
5
7
6
1
8
3
4
10
14
11
12
13
15 16
Engine Primary Beam Kit Bottom Plate Supporting Bar Wheels Control Valve
Handle
Hydraulic Cylinder Handle Oil Hose Hexagon Socket Head
Cap Screw M10x 35mm
Hexagon Flange
Bolt M8x20mm
Hexagon Flange
Bolt M8x40mm
Hose Clamp Flat Washer Cotter Pin Spring Washer Flange Nut Plug of Oil Dipstick
CONTROLS AND FEATURES
1. Handle
2. Splitting Wedge
3. Support Leg – Supports log splitter while operating.
4. Splitting Support Beam---DO NOT PUNCTURE The hydraulic tank is inside.
5. Hydraulic cylinder base.
6. 10" Wheels
7. Hydraulic Oil Dipstick – Add or check Hydraulic oil level.
8. Hydraulic Cylinder – Converts hydraulic pressure into linear force.
9. Control Valve Handle – Controls the movement of the thrust plate.
10. Engine 209cc 4-stroke, air cooled.
11. Hydraulic Oil Return (Low Pressure) Hose – returns hydraulic oil back into the hydraulic tank.
12. Suction Hose – Draws hydraulic oil from the tank into the pump.
13. Hydraulic Pump – Pumps hydraulic oil through the system.
14. Engine Oil Fill Cap / Dipstick – Add or check the motor oil level.
15. Hydraulic Oil Inlet (High Pressure) Hose – Feeds hydraulic oil into the hydraulic cylinder.
16. Fuel filler tank cap.
PARTS LIST

Recommended tools: Needle nose pliers
Recommended tools: Ratchet Wrench (12mm 13mm)
Recommended tools: Ratchet Wrench (12mm)
Recommended tools: Ratchet Wrench (12mm 13mm)
Recommended tools: Allen wrench (6mm)
ASSEMBLY
7

Recommended tools: Needle nose pliers
Recommended tools: Slotted screwdriver
Recommended tools: Wrench (27mm)
8

10
7
3
11
9
8
(4)
5
15
16
4
1
20
2
17
6
18
13
14
12
(1)
19
(9)
Part No.
1
2
3
4
5
6
7
8
9
10
Description
Cotter Pin
Flat Washer
10 " Wheel
Flange Nut
Hexagon Flange Bolt M8x40mm
Bottom Plate
Hexagon Flange Bolt M8x20mm
Oil Hose
Hose Clamp
Retaining Ring
Q’ty
3
2
2
6
4
1
4
1
2
1
Part No.
11
12
13
14
15
16
17
18
19
20
Description
Filter Screen
Plug Of Oil Dipstick
Hydraulic Cylinder Kit
Spring Washer
Hexagon Socket Head Cap Screw M10x35mm
Primary Beam Kit
Handle
Hexagon Flange Bolt M8x20mm
Supporting Bar
Engine
Q’ty
1
1
3
3
1
1
3
3
3
3
EXPANDED DRAWINGS
9

OPERATION
1. Read the Operator’s Manual completely before attempting to use this log splitter.
2. Do not allow anyone to operate your log splitter who has not read the Operator’s Manual or has not been instructed on the
safe use of the log splitter.
3. Never allow children or untrained adults to operate this machine.
4. Never leave the machine unattended with the engine running.
5. Never operate the machine when under the influence of alcohol, drugs or medication
6. Many accidents occur when more than one (1) person operates the log splitter. If a helper is assisting in loading logs to be
split, never actuate controls until helper is clear of the area.
7. Never allow anyone to ride on the machine during use or during operation.
8. Never transport cargo on the log splitter.
9. Always operate the log splitter with all safety equipment in place and all controls properly adjusted for safe operation.
10. High fluid pressures are contained in hydraulic log splitters.
Pressurized hydraulic fluid escaping through a pin hole opening can puncture skin and cause sever bleeding and result in
blood poisoning. Therefore, the following instructions should be heeded at all times.
– Be sure to confirm all hose connections and hose clamps are tight before each use. It is possible for connections to
vibrate loose over time
– Do not operate the unit with frayed, kinked, cracked or damaged hoses, fittings, or tubing.
– Stop the engine and relieve hydraulic system pressure before changing or adjusting fittings, hoses, tubing, or other
system components.
– Do not adjust the pressure settings of the pump or valve. The factory presets are tested for optimal system performance.
Tampering with or modifying these settings will render your product warranty nu,, and void.
– Do not check for leaks with your hand. Leaks can be detected by passing cardboard or wood over the suspected area.
Look for discoloration. If injured by escaping fluid, see a doctor at once. Serious infection or allergic reaction can develop
if proper medical treatment is not administered immediately.
11. Keep the operation zone and adjacent area clear for safe, secure footing.
12. Always keep hands and feet clear of moving parts.
13. If your log splitter is equipped with an internal-combustion engine and intended for use near any unimproved forest, brush,
or grass covered land, the engine exhaust should be equipped with a spark arrestor. Make sure you comply with local,
state, and federal codes. Take appropriate fire-fighting equipment with you.
14. Log splitters should be used only for splitting wood. Do not use for other purposes unless the manufacturer provides
attachments and instructions for such purposes.
15. When loading a ram-type log splitter, place your hands on the sides of the log, not the ends. Never place your hands or any
part of your body between a log and any part of the log splitter
16. Only split wood WITH the grain. NEVER split perpendicular to the grain.
17. On ram-type log splitters, never attempt to split more than one log at a time unless the ram has been fully retracted and a
second log is needed to complete the splitting of the first log.
18. On ram-type log splitters when the logs are not squared, the longest portion of the log should be rotated down and the
most squared end placed against the ram.
19. Use only your hand to operate the log splitter controls, never kick the handle with your feet.
20. Do not refuel the engine until it has cooled for several minutes.
* Please read Alphaworks "Gasoline Engine Manual"for engine operation requirements and precautions.
Add Hydraulic Oil
DO NOT remove the hydraulic oil fill cap when the engine is running or hot. Hot oil can escape causing severe burns.
Always allow the log splitter to cool completely before removing the hydraulic oil cap.
High fluid pressure and temperatures are created in the hydraulic log splitters. Hydraulic fluid will escape through a pin-size
hole opening and can puncture skin.
Inspect hydraulic system regularly for possible leaks.
Never check for leaks with your hand while the system is pressurized.
Seek medical attention immediately if injured by escaping fluid.
To check hydraulic oil level, insert the dipstick into fill neck until it stops.
Remove and read level. Do not thread dipstick into fill neck when checking oil.
When the outdoor temperature is below 32°F , Dexron III transmission fluid can be used.
1. Make sure the log splitter is on a flat, level surface.
2. Remove the dipstick from the oil tank.
3. Add 1.6gallon of hydraulic oil - AW32 / AW46
4. Check hydraulic oil level with oil dipstick. The oil level should be on the dipstick.
5. Tighten the dipstick.
6. Start engine (see Starting the Engine in the Operation section).
7. Extend and retract the cylinder to purge air from the hydraulic system. Cylinder motion should be smooth and continuous.
10

Great Circle USA
Support Line: 1-866-493-0524
[email protected]
www.greatcircleus.com
8. Shut-off engine (see Stopping the Engine in the Operation section).
9. Hydraulic oil can be added appropriately when the cylinder thrust is insufficient.
For safety reasons, hydraulic oil, oil and fuel are not included in the package.
MAINTENANCE AND STORAGE
1. Always shut off the power source while repairing or adjusting the splitter except as recommended by the manufacturer.
2. Clean debris from the engine cylinder, cylinder head fins, recoil starter cover, and muffler areas. If the engine is equipped
with a spark arrestor muffler, clean and inspect it regularly (follow manufacturer’s service instructions). Replace, if damaged.
3. Never store the unit indoors with fuel in the tank. Fumes might reach an open flame spark. Allow the engine to cool before
storing in any enclosure.
4. Clear debris from movable parts, but only when the power source is shut off.
5. Check to be sure all nuts and bolts are tight to assure the equipment is in safe working condition prior to each usage, and
periodically during usage. Engine motor vibration may shake screws and bolts loose during operation.
TROUBLE SHOOTING
Problem
Engine will not start.
Engine will not start.
Engine starts but runs roughly.
Engine shuts down during operation.
Engine cannot supply enough power
or overheating.
Wedge movement is slow or erratic.
Oil leak from cylinder.
Wedge will not extend or retract.
Excessive bouncing while towing.
Cause
No fuel.
Faulty spark plug.
Unit loaded during start up.
Low oil level.
Choke in the wrong position.
Spark plug wire loose.
Out of fuel.
Low oil level.
Insufficient ventilation.
Air in the hydraulic oil system.
Debris lodged in beam guides.
Low hydraulic oil.
Faulty cylinder rod seal.
Scored or bent cylinder rod.
Loose hydraulic fitting.
Faulty combination washer seal
on cylinder hydraulic fitting.
Faulty control valve.
Faulty hydraulic pump.
Low hydraulic oil.
Under-inflated tires.
Solution
Add fuel.
Replace spark plug.
Remove load from unit.
Fill crankcase to the proper level.
Place log splitter on a flat, level surface.
Adjust choke.
Attach wire to spark plug.
Fill fuel tank.
Fill crankcase to the proper level. Place log
splitter on a flat, level surface.
Check for air restriction. Move to a well
ventilated area.
Purge air by extending and retracting the wedge
several times until motion is smooth.
Clear debris from beam.
Check oil level and add as needed.
Contact Customer Service.
Contact Customer Service.
Tighten hydraulic fitting.
Contact Customer Service.
Contact Customer Service.
Contact Customer Service.
Check oil level and add as needed.
Inflate tires to proper pressure. Refer to tire
sidewall.
Size: 210x285mm REV 04/23/21157克双铜
11
3.02.01.268