Cobra DG350 Original Instructions Manual

Engines

Original Instructions

Model: DG350

Henton and Chattell Ltd: London Road, Nottingham NG2 3HW. UK.

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CONTENTS

SECTION 1 INTRODUCTION............................................................................. ...3

SECTION 2 SAFETY MESSAGES..........................................................................3

SECTION 3 SAFETY INFORMATION ....................................................................3

SECTION 4 COMPONENT&CONTROL LOCATION..............................................4

SECTION 5 PRE-OPERATION CHECKS...............................................................4

SECTION 6 OPERATIONS ....................................................................................4

SECTION 7 SPECIFICATIONS…………………………………………………………6

SECTION 8 TUNE-UP SPECIFICATIONS..............................................................7

SECTION 9 SERVICING YOUR ENGINE...............................................................7

SECTION 10 ENGINE ADJUSTMENT…………………………………………….....14

SECTION 11 HELPFUL TIPS&SUGGESTIONS………………………..…………..14

SECTION 12 TAKING CARE OF UNEXPECTED PROBLEMS........................ …17

SECTION 13 TECHNICAL&CONSUMER& TECHNICAL INFORMATION...........17

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1. INTRODUCTION

Thank you for purchasing our engine. We want to help you to get the best results from your new engine and
operate it safely. This manual contains information on how to do that; please read it carefully before operating
the engine.
This manual should be considered as a permanent part of the engine and should remain with the engine if
resold.
Review the instructions provided with the equipment powered by this engine for any additional information
regarding engine startup, shutdown, operation, adjustments or any special maintenance instructions.

2. SAFETY MESSAGES

Your safety and the safety of others are very important. We have provided important safety messages in this
manual and on the engine. Please read these messages carefully.

A safety message alerts you to potential hazards that could hurt you or others. Each safety message is

preceded by a safety alert symbol and one of three words, DANGER, WARNING, or CAUTION.

These signal words mean:

DANGER: You WILL be KILLED or SERIOUSLY HURT if you don't follow instructions.

WARNING: You CAN be KILLED or SERIOUSLY HURT if you don't follow instructions.

CAUTION: You CAN be HURT if you don't follow instructions.

Each message tells you what the hazard is, what can happen, and what you can do to avoid or reduce injury.

3. SAFETY INFORMATION

Understand the operation of all controls and learn how to stop the engine quickly in case of emergency. Make
sure the operator receives adequate instruction before operating the equipment.
Your engine's exhaust contains poisonous carbon monoxide. Do not run the engine without adequate
ventilation, and never run the engine indoors.

The engine and exhaust become very hot during operation. Keep the engine at least 3 feet (1 meter) away
from buildings and other equipment during operation. Keep flammable materials away, and do not place
anything on the engine while it is running.

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4. COMPONENT&CONTROL LOCATION

Fig. 1

1. Starter grip 2. Fuel cap 3.Air filter

4. Primer bulb 5. Carburetor 6.Spark plug

7. Muffler 8. Oil filter cap/dipstick 9.Fuel tank

5. PRE-OPERATION CHECKS

For your safety, and to maximize the service life of your equipment, it is very important to take a few moments
to check the engine condition before operating Be sure to take care of any problem you find, or have your
servicing dealer to correct it before you operate the engine.

WARNING: Improper maintenance to this engine, or failure to correct a problem before operation, can

cause a malfunction in which you can be seriously hurt or killed. Always perform a preparation inspection
before each operation, and correct any problem.

Always check the following items before you start the engine:

1. Fuel level

2. Oil level

3. Air cleaner

4. General inspection: Check for fluid leaks and loose or damaged parts.

5. Check the equipment powered by this engine.
Review the instructions provided with the equipment powered by this engine for any precautions and
procedures that should be followed before engine startup.

6. OPERATIONS

6.1 SAFE OPERATING PRECAUTIONS

Before operating the engine for the first time, please review the SAFETY INFORMATION section on page 3
and the PRE-OPERATION CHECKS above.

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WARNING: Carbon monoxide gas is toxic. Breathing it can cause unconsciousness and even kill you.

Avoid any areas or actions that expose you to carbon monoxide.
Review the instructions provided with the equipment powered by this engine for any safety precautions that
should be observed with engine startup, shutdown, or operation.

6.2 STARTING THE ENGINE

a) Push the red primer bulb 3-5 times. (Fig.2A)
Note：Priming is usually unnecessary when restarting a warm engine.
b) Standing behind the unit, grasp the brake control handle and hold it against the upper handle. (Fig 2B)
c）Pull the starter grip slowly until resistance is felt and then pull rapidly to avoid kickback.

WARNING: If you push the primer bulb too many times, excessive fuel will flood the carburetor and the

engine will be difficult to start.

Fig. 2A Fig. 2B

CAUTION: Do not allow the starter grip (1) to snap back against the engine. Return it gently to prevent

damage to the starter. (See Fig. 3)

Fig.3

6.3 STOPPING THE ENGINE

Release the brake control handle (located on equipment) to stop the engine. (See Fig 4)

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Fig. 4

7. SPECIFICATIONS

Type

DG350

Dry weight(kg)

9

Engine type

4-stroke, overhead valve, single cylinder

Displacement[Bore x Stroke]

98.5cc 56*40mm

Max. torque

5.1N.m at 3,000 min-1

Cooling system

Forced air

Lubrication systems

Forced splash

Ignition system

TCI

PTO shaft rotation

Counterclockwise

8. TUNEUP SPECIFICATIONS

ITEM

SPECIFICATION

MAINTENANCE

Spark plug gap

0.028-0.031 in
(0.7-0.8 mm)

Refer to page 12

Valve clearance (cold)

IN:0.06±0.02mm
EX:0.08±0.02mm

See your authorized dealer
Other specifications

No other adjustments needed

9. SERVICING YOUR ENGINE

9.1 THE IMPORTANCE OF MAINTENANCE

Good maintenance is essential for safe, economical and trouble-free operation. It will also help reduce
pollution.

WARNING: Improper maintenance, or failure to correct a problem before operation, can cause a

malfunction in which you can be seriously hurt or killed. Always follow the inspection and maintenance
recommendations and schedules in this owner's manual.