Power Fist 79cc Bedienungsanleitung

V 4.0 8638025

79ccOHVGasEngine

User Manual

Please read and understand all instructions before use. Retain this manual for

future reference.

8638025 79cc OHV Gas Engine V 4.0

SPECIFICATIONS

Engine Displacement

79cc

Start Type

Pull

Torque

4.5 ft-lb

Shaft Length

2.4 in.

Shaft Diameter

5/8 in.

Shaft Rotation (From PTO Shaft Side)

Counterclockwise

Shaft End Tapped [Diameter (in) / Threads Per Inch]

5/16 -24 UNF

Number of Cylinders

Cylinder Bore

2.13 in.

Stroke

1.5 in.

Compression Ratio

9.1:1

Cooling System

Air

Fuel Tank

Metal

Fuel Type

Gasoline

Fuel Tank Capacity

1.58 quarts (1.5 litres)

Fuel Filter

Yes

Oil Capacity

0.36 quarts (0.35 litres )

Lubrication System

Splash

Oil API Service Classification

SF or Newer

Low Oil Shutdown

Yes

Governor System

Mechanical

Ignition System

Transistorized Magneto

Max. Speed

3,600 RPM

Spark Plug (NGK BP6HS or

Champion L92YC)

Gap

0.028~0.03 in. (0.7~0.8 mm)

Torque

18~22 Nm

Air Cleaner Type

Foam

79ccOHVGasEngine

2 For technical questions call 1-800-665-8685

V 4.0 79cc OHV Gas Engine 8638025

INTRODUCTION

The 79cc OHV gas engine is ideal for small commercial or agricultural

applications. The engine has an overhead valve design and electronic ignition

for easy starts, increased power, plus better fuel economy. It meets all

Environmental Protection Agency (EPA) Guidelines.

SAFETY

WARNING! Read and understand all instructions before using this engine. The

operator must follow basic precautions to reduce the risk of personal injury

and/or damage to the equipment.

Keep this manual for safety warnings, precautions, operating or inspection and

maintenance instructions.

HAZARD DEFINITIONS

Please familiarize yourself with the hazard notices found in this manual. A notice is

an alert that there is a possibility of property damage, injury or death if certain

instructions are not followed.

DANGER! This notice indicates an immediate and specific hazard that will result in

severe personal injury or death if the proper precautions are not taken.

WARNING! This notice indicates a specific hazard or unsafe practice that could

result in severe personal injury or death if the proper precautions

are not taken.

CAUTION! This notice indicates a potentially hazardous situation that may result

in minor or moderate injury if proper practices are not taken.

NOTICE! This notice indicates that a specific hazard or unsafe practice will

result in equipment or property damage, but not personal injury.

WORK AREA

1. Operate in a safe work environment. Keep your work area clean, well lit and

free of distractions.

2. Keep anyone not wearing the appropriate safety equipment away from the

work area.

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8638025 79cc OHV Gas Engine V 4.0

3. Store unused tools properly in a safe and dry location to prevent rust or

damage. Lock tools away and keep out of the reach of children.

4. Do not install or use the engine in the presence of flammable gases, dust

or liquids.

PERSONAL SAFETY

WARNING! Wear personal protective equipment approved by the Canadian

Standards Association (CSA) or American National Standards Institute (ANSI).

PERSONAL PROTECTIVE EQUIPMENT

1. Always wear impact safety goggles that provide front and side protection for

the eyes. Eye protection equipment should comply with CSA Z94.3-07 or ANSI

Z87.1 standards based on the type of work performed.

2. Wear gloves that provide protection based on the work materials or to reduce

the effects of tool vibration.

a. Do not wear gloves when operating a tool that can snag the material and

pull the hand into the tool.

3. Wear protective clothing designed for the work environment and tool.

4. Non-skid footwear is recommended to maintain footing and balance in the

work environment.

5. Wear steel toe footwear or steel toe caps to prevent a foot injury from

falling objects.

PERSONAL PRECAUTIONS

Control the tool, personal movement and the work environment to avoid personal

injury or damage to tool.

1. Do not operate any tool when tired or under the influence of drugs, alcohol

or medications.

2. Avoid wearing clothes or jewelry that can become entangled with the moving

parts of a tool. Keep long hair covered or bound.

3. Do not overreach when operating a tool. Proper footing and balance enables

better control in unexpected situations.

4 For technical questions call 1-800-665-8685

V 4.0 79cc OHV Gas Engine 8638025

SPECIFIC SAFETY PRECAUTIONS

WARNING! DO NOT let comfort or familiarity with product (gained from repeated

use) replace strict adherence to the engine safety rules. If you use this engine

unsafely or incorrectly, you can suffer serious personal injury.

NOTICE! This engine is designed for recreational and light farm use. It is not

intended for heavy industrial use, in aircraft products or vehicles in competitive

events. These uses may shorten the engine’s useful life span.

1. Use the correct engine for the job. This engine was designed for a

specific function. Do not modify or alter this engine or use it for an

unintended purpose.

2. All users must understand the operation of all controls and learn how to stop

the engine quickly in case of emergency.

3. Do not tamper with governor spring, links or other engine parts to increase

speed or power.

4. The engine and exhaust become very hot during operation. Severe thermal

burns can occur on contact, especially with the muffler.

a. Keep the engine at least 3 feet (1 meter) away from buildings and other

equipment during operation.

b. Remove accumulated debris from muffler and cylinder area. Combustible

debris, such as leaves, grass, brush, etc. can catch fire if they come in

contact with a hot engine.

c. Do not place anything on the engine while it is running.

d. Allow muffler, engine cylinder and fins to cool before touching.

CARBON MONOXIDE POISONING

WARNING! Never operate a gas engine indoors or in a confined space as the

exhaust contains carbon monoxide gas. Inhalation of carbon monoxide gas can

lead to illness or death. The area must be well ventilated. Opening windows and

doors is not enough to ventilate an area.

Carbon monoxide is a colourless and odourless gas that is difficult to detect.

Carbon monoxide poisoning results from inhalation of the gas and may be lethal if

left untreated. Evacuate all people to an area with clean air and seek immediate

medical attention for any person experiencing the following symptoms:

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8638025 79cc OHV Gas Engine V 4.0

1. Headache

2. Confusion

3. Shortness of breath

4. Weakness

5. Chest Pain

6. Dizziness

7. Blurred Vision

8. Nausea and vomiting

9. Unconsciousness

UNPACKING

WARNING! Do not operate the engine if any part is missing. Replace the missing

part before operating. Failure to do so could result in a malfunction and

personal injury.

Remove the parts and accessories from the packaging and inspect for damage.

Make sure that all items in the parts list are included.

Contents:

• Gas Engine • Spark Plug Wrench

IDENTIFICATION KEY

When this manual refers to a letter, it corresponds to the components shown in

Figure 1. Compare the illustration with your engine to familiarize yourself with the

location of various features and controls.

A Muffler

B Spark Plug

C Choke Lever

D Air Cleaner

E Starting Handle/

Recoil Starter

F Drain Plug

G Fuel Filler Cap

H Fuel Tank

I Throttle Lever

J Engine Switch

K Dipstick/Oil Filler Cap

Fig. 1

6 For technical questions call 1-800-665-8685

V 4.0 79cc OHV Gas Engine 8638025

ASSEMBLY & INSTALLATION

1. The engine comes assembled.

2. The engine is not shipped with oil. Starting the engine without oil will damage

the engine beyond repair. Add oil per the maintenance instructions.

3. Check that the filter is in place. See

Maintenance – Service the Air Filter

4. The throttle lever (I) can adjust the motor

speed using a cable or as a manual lever.

The throttle’s nut must be tightened to allow

friction to hold the lever in place when used

as a manual lever.

OPERATION

BEFORE STARTING THE ENGINE

WARNING! Do not start or run engine in an enclosed area, even if the doors or

windows are open. Engine exhaust contains carbon monoxide (see Carbon

Monoxide Precautions).

1. Make sure spark plug (B), muffler (A), fuel cap (G) and air cleaner (D) are in

place and secured.

2. Ensure the spark plug lead is securely connected to the spark plug, otherwise

unintentional sparking can result, causing a fire or electric shock.

3. Check that all protective covers and guards are in place.

4. Check that all nuts, bolts and screws are tight.

5. Check the fuel level.

6. Check the engine oil level. Running the engine without enough oil can damage

the engine.

7. Look around and underneath the engine for signs of oil or gasoline leaks.

a. Do not start the engine until any spilled fuel has evaporated.

8. Remove any excessive dirt or debris, especially around the muffler (A) and

recoil starter (E).

9. Look for signs of damage.

Fig. 2

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8638025 79cc OHV Gas Engine V 4.0

10. Check the equipment powered by this engine.

11. Review the instructions provided with the equipment powered by this

engine for precautions and procedures that should be followed before

starting the engine.

STARTING THE ENGINE

WARNING! Direct-coupled equipment components such as, but not limited to,

blades, impellers, pulleys, sprockets, etc., must be securely attached before

the engine is started to avoid injury or damage.

CAUTION! Failure to follow the steps below will result in rapid retraction of the

starter cord faster than the user can let go. This will pull the user’s hand and

arm toward the engine, possibly resulting in an injury.

1. Move the choke lever (C) to the CLOSED position.

2. Move the throttle lever (I) away from MIN. position, about 1/3 of way toward

the MAX. position.

3. Turn the engine switch (J) to the ON position.

4. Pull Start - Pull the starter handle (E) lightly until you feel resistance then pull

the starter handle briskly. Do not allow the starter handle to snap back against

the engine. Instead, return the starter grip gently by hand.

5. The engine should turn over and start running.

a. If engine floods, place the throttle in FAST and crank until engine starts.

The engine may make a metallic rapping noise (spark knock, ping) while running

under a heavy load. This is normal. Replace the fuel with premium quality gasoline

if the metallic rapping noise continues under normal load. Contact a qualified

mechanic if the pinging continues as this may indicate existing engine damage.

STOPPING THE ENGINE

IN AN EMERGENCY

Turn the engine switch (J) to the OFF position to stop the engine.

8 For technical questions call 1-800-665-8685

V 4.0 79cc OHV Gas Engine 8638025

DURING NORMAL USE

Stop the engine by following this procedure:

1. Move the throttle lever (I) to the MIN. position.

2. Turn the engine switch (J) to the OFF position.

3. Move the choke lever (C) to the OPEN position.

CARE & MAINTENANCE

WARNING! Always ensure that the engine is off before you begin any

maintenance or repairs. An active engine part can cause a severe injury,

amputation or death if a mishap occurs.

The following section includes a maintenance schedule, routine inspection

procedures and simple maintenance procedures using basic hand tools. Service

tasks that are more difficult or require special tools are best handled by a technician

or other qualified mechanic.

1. Maintain the engine with care. A well-maintained engine is more efficient and

less likely to have problems.

2. Follow instructions for servicing.

3. Inspect the engine components periodically. Check fuel lines, tank, cap and

fittings frequently for cracks or leaks. Have damaged or worn components

repaired or replaced by an authorized technician.

4. Replacement parts must match the original. Use manufacturer recommended

parts when possible.

5. Disconnect the spark plug lead and keep it away from the spark plug during

maintenance and repairs.

6. Maintain the engine’s label and name plate. These carry important information.

If unreadable or missing, contact Princess Auto Ltd. for replacements.

IMPORTANT! Only qualified service personnel should repair the engine.

MAINTENANCE SCHEDULE

This schedule applies to normal operating conditions. If you operate your engine

under severe conditions, such as sustained high-load or high-temperature

operation or use in unusually wet or dusty conditions, consult a qualified technician

for recommendations applicable to your individual needs and use.

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8638025 79cc OHV Gas Engine V 4.0

Regular Service Period *

Before Each

Use/Daily

First Month or 20

Hours

Every 3 months

or 50 Hours

Every 6 months

or 100 Hours

Every Year or

300 Hours

Performed at every indicated month

or operating hour interval, whichever

comes first.

Engine Oil

Check

Change

Air Cleaner

Check

Clean

X **

Spark Plug

Clean / Adjust

Replace

Idle Speed

Check / Adjust

Valve Clearance

Check / Adjust

Combustion Chamber

Clean

After every 500 Hours

Fuel Tank and Filter

Clean

Fuel Tube

Check

Every 2 years (replace if necessary)

* For commercial use, log hours of operation to determine proper maintenance intervals.

** Service more frequently when used in dusty areas.

FUEL RECOMMENDATIONS

NOTICE! Do not use unapproved gasoline, such as E85. Do not mix oil in

gasoline or modify the engine to run on alternate fuels. This can damage the

engine components. To protect the fuel system from gum formation, mix a

fuel stabilizer into the fuel.

This engine is certified to operate on unleaded gasoline with a minimum of 87

octane/87 AKI (91 RON). Use gasoline without ethanol or similar alcohol based

additives. Gasoline with up to 10% ethanol (gasohol) or up to 15% MTBE

(methyl tertiary butyl ether) may be used if required.

If the engine is routinely operated at altitudes over 5,000 ft (1,524 meters), it will be

necessary to have a qualified technician modify the engine for increased

performance. Fuel should be a minimum of 85 octane/85 AKI (91 RON) to prevent

decreased performance.

The emissions control system for this engine is EM (Engine Modifications).

1. Use only an approved fuel container for refueling the engine.

10 For technical questions call 1-800-665-8685

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