Echo QV-670 User manual

INSTRUCTION MANUAL
QUIKVENT™SYSTEM
WARNING
Read the instructions carefully and follow the rules for safe
operation.
Failure to do so could result in serious injury.
QV-670

The engine exhaust from this
product contains chemicals known
to the State of California to cause
cancer, birth defects or other
reproductive harm.
WARNING
Copyright ©2002 All Rights Reserved.
WARNING
Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State of
California to cause cancer, birth defects or other reproductive harm.
Some examples of these chemicals are:
• Lead from lead-based paints,
• Crystalline silica from bricks and cement and other masonry
products, and
• Arsenic and chromium from chemically treated lumber.
Your risk from these exposures varies, depending on how often you do
this type of work. To reduce your exposure to these chemicals: work in a
well ventilated area, and work with approved safety equipment, such as
those dust masks that are specially designed to filter out microscopic
particles.

1
CONTENTS
Page No.
Safety ......................................................................................................................... 2
Description ................................................................................................................. 7
Operation (Pre-Ventilation Procedures)...................................................................... 8
Troubleshooting.......................................................................................................... 10
Maintenance............................................................................................................... 12
Assembly.................................................................................................................... 20
Specifications ............................................................................................................. 21
Specifications, descriptions and illustrative material in this literature are as accurate as
known at the time of publication, but are subject to change without notice. Illustrations
may include optional equipment and accessories, and may not include all standard
equipment.
INTRODUCTION
The ECHO QuikVent™ System is a chain saw
specially designed for use by trained fire fighters to
ventilate, trench and breach burning structures.
This manual provides the information necessary for
operation and maintenance of the saw.
DANGER
This system is designed for use with a
special bar and chain for fire department
application. This system should not be used
for conventional wood cutting applications.
DANGER
Review ECHO Safety Chain Saw Manual and
note exceptions as listed below.
DANGER
If the unit is modified for conventional wood
cutting operations, read rules for safe
operation and instructions carefully in the
corresponding CS-670 ECHO Chain Saw
Instruction Manual and the ECHO Chain Saw
Safety Manual. Use only the guide bar and
chain combinations listed in the instruction
manual with a Kick Guard installed on the
guide bar. A free copy of the Chain Saw
Safety Manual can be obtained from your
ECHO dealer or by writing ECHO,
INCORPORATED, 400 Oakwood Road, Lake
Zurich, IL 60047-1564.

2
SAFETY
This symbol means “DO NOT DO”
whatever is shown.
This symbol is used on DANGER signs to
attractattention.
This symbol is used on CAUTION signs
to attract attention.
DANGER
Although this manual uses safety symbols to
highlight the most serious potential hazards,
all instructions must be followed to avoid
some risk of serious injury or death to
yourself and others.
FOLLOW INSTRUCTIONS INTHIS
MANUAL
UNDERSTAND SAFETY AND
INFORMATION SYMBOLS
THIS EXAMPLE OF A DANGER
SIGN CONTAINS THE ECHO
DEFINITION OFTHE SIGNAL
WORD “DANGER”
THIS EXAMPLE OF A CAUTION
SIGN CONTAINS THE ECHO
DEFINITION OFTHE SIGNAL
WORD“CAUTlON”
CAUTION
Signs headed CAUTION call attention to a
danger or hazard capable of resulting in
severe, but not irreversible, injury or damage
- not a prohibitive warning, but one stressing
certain precautions against a potential
hazard.
DANGER
This attention symbol and signal word
DANGER indicate an immediates and grave
danger or peril, a hazard producing
irreversible damage or injury. To avoid this
danger, the operator must heed the
recommendation printed in the box.

3
SAFETY
THIS EXAMPLE OF A NOTE SIGN
CONTAINS THE ECHO
DEFINITION OF THE SIGNAL
WORD“NOTE”
READ AND UNDERSTANDTHE
ECHO CHAINSAW SAFETY
MANUAL BEFORE USING THIS
SAW
FOLLOW FIRE DEPARTMENT
REGULATIONS
The Safety Manual included with your QuikVent™
system and this Instruction Manual, covers
terminology, safety features, practices and forces
at work during cutting.
1. This manual covers operation and maintenance
of the system only.
2. Follow Fire Department regulations on moving
the system from the ground to the cutting site,
ventilation techniques, etc.
FOLLOW IFSTA PRACTICES Follow safe and effective practices developed by
The International Fire Service Training Association
(lFSTA) for transport, venting and all other fire
fightingtechniques.
NOTE
Signs headed NOTE concern things other
than safety messages, such as potential
damage to equipment or information of
special importance.
FOLLOW SAFETY DECALS Locate the safety decals on your QuikVent™
system. Make sure the decals are legible and that
you understand them and follow them.
Part Number 890191-32632
WARNING!!!
This system is capable of severe kickback that could result in serious
injury.Read and follow all safety precautions in the instruction and
safety manuals. Failure to follow instructions could result in serious
personalinjury.
For Quickvent System:This system is designed for use with a special
bar and chain for fire department applications.The QV bar and chain
should not be used for conventional wood cutting applications.Do not
operate the system unless you have specialized training in its use for
dangerous and hazardous operations.Full fire department turnouts are
required when using this system.
For Chain Saw (Woodcutting):Do not operate this chain saw unless you
have extra ordinary cutting needs and experience and specialized
training for dealing with kickback.ECHO chain saw with significantly
reduced kickback potential are available.
TO AVOID KICKBACK
1) Hold the chain saw firmly with both hands,
2) Tip contact is required (for QuickVent applications only) to complete
boring operations.Be aware that kockback could occur.
Part Number 890191-32632

4
SAFETY
FOLLOW ALL MAINTENANCE
PROCEDURES
Follow all maintenance procedures outlined in the
maintenance section of this manual to ensure that
the saw will operate safely and will start and
operate when needed.
CAUTION
DO NOT operate system in a confined area.
AVOID CARBON MONOXIDE
WEAR PROTECTIVE CLOTHING
AND EQUIPMENT
Wear full turn-out gear in accordance with your fire
department’sregulations.
HANDLE FUEL SAFELY
DANGER
ALWAYS store gasoline in an approved
container.
DO NOT smoke while handling gasoline.
ALWAYS stop the engine before refueling.
DO NOT refuel a hot engine. Wait until it
cools.
ALWAYS remove the fuel cap slowly in order
to relieve any pressure build-up in tank.
DO NOT overfill the tank and always clean up
spilled fuel .
ALWAYS restart the engine at least 3 m (10
feet) away from refueling point.

5
SAFETY
CLEAR WORK AREA
Make sure that hazardous debris such as glass or
wire is cleared from the area to be ventilated.
KEEP A SAFE DISTANCE FROM
CO-WORKERS
Make sure there is another person nearby when
operating the system, but also make sure they are
at a safe distance.
OPERATE SAFELY
AVOID operating the system when you are fatigued.
ALWAYS remains alert when operating the system
to avoid possible injury to yourself and others.
DO NOT operate the system while under the
influence of alcohol or drugs.
AVOID KICKBACK
DANGER
KICKBACK may occur when the nose or tip
of the guide bar touches an object, or when
the material being cut closes in and pinches
the saw chain in the cut.
Tip contact in some cases may cause a
lightning-fast reverse REACTION, kicking the
guide bar up and back towards the operator.
Pinching the saw chain along the top of the
guide bar may push the guide bar rapidly
back towards the operator. Either of these
reactions could result in serious personal
injury by causing you to lose control of the
system. Do not rely exclusively upon the
safety devices built into your saw. As a chain
saw user, you should take several steps to
keep your cutting jobs free from accident or
injury.
IMPORTANT: For free copies of the ECHO
Chainsaw Safety Manual, contact ECHO Inc.,
400 Oakwood Rd., Lake Zurich, Ill. 60047-1564

6
SAFETY
USE CORRECT TECHNIQUE
1.With a basic understanding of kickback, you
can reduce or eliminate the element of surprise.
Sudden surprise contributes to accidents.
2.Keep a good firm grip of the saw with both
hands, the right hand on the rear handle, and
the left hand on the front handle.When the
engine is running, use a firm grip with thumbs
and fingers encircling the chain saw handles. A
firm grip will help you reduce kickback and
maintain control of the saw.Do not let go.
3.Always work upwind.
4.Cut at high engine speeds.
5.Ventilation and breaching use “plunge cutting”
which entails boring into a structure.There is
always a chance of kickback even when the
plunge cut is expertly done.
6. Keep the skid plate touching the cutting
surface.
7.Avoid cutting joists.
8.Do not overreach or cut above shoulder height.
9.Follow manufacturer’s sharpening and
maintenance instructions for the saw chain.
10. Use only replacement bars and chains
specified by ECHO, Inc.
DANGER
Grasp both handles firmly and bring the saw
to full throttle. Using a steady pressure, rock
the tip of the saw into the roof surface, using
the skid plate as a pivot point between the
system and the roof. Keeping the weight of
the system against the roof with a firm grip
will increase operator comfort and control
during this dangerous operation.

7
DESCRIPTION
CONTROLS
TRIGGER LOCKOUT LEVER
MUFFLER
CHOKE KNOB
REAR HANDLE
AIR CLEANER COVER SPROCKET GUARD
FIREBRAND BAR AND CHAIN
CHAIN OIL CAP
SKID PLATE FAN COVER
THROTTLE TRIGGER
CYLINDER COVER
CHAIN BRAKE, HAND GUARD
STARTER GRIP
IGNITION SWITCH
FUEL CAP
FRONT HANDLE

8
OPERATION (Pre-Ventilation Procedures)
SAFE STARTING TECHNIQUES
1.KNOW HOW TO STOP:Keep hold of the rear
handle, but release trigger and flick the switch to
“STOP.”
2.Hold the saw down securely on a flat surface
with bar and chain in the clear. After setting the
controls, hold the top of the front handle with
your left hand.Slide the toe of your right boot
through the rear handle to hold down the rear of
the system.Grasp the starter handle with your
right hand.
TRANSPORTING SYSTEM
Transport system to cutting area with blade to rear.
NOTE
Do not allow the starter handle to snap back
against the housing.
NOTE
Always hold the unit firmly.
NOTE
Use short pulls, 1/2 to 2/3 rope length, when
pulling starting rope.
CAUTION
Do not wrap starter rope around your hand
or wrist (in case of engine backfire). Pull the
handle to crank engine.
CAUTION
Follow fire department procedures for
transporting power equipment.

9
OPERATION (Pre-Ventilation Procedures)
SAFE OPERATION TIPS
(Ventilation Procedures)
1.Follow all fire department procedures on safe
ventilation techniques and on avoidance of
cutting near gas and electric services.
2.Keep both hands on handles when engine is
running.
3.Always operate the saw at full throttle when
making a cut.
4.Always bury the tip of the cutting bar in the
cuttingsurface.
5.Make sure the skid plate is in contact with cutting
surface.
6.Avoid cutting above shoulder height and
overreaching.
DANGER
Boring -Ventilation and breaching uses
“plunge cutting” which entails boring into a
structure.There is always a chance of
kickback even when the plunge cut is
expertly done. Keep the skid plate touching
the surface. Grasp both handles firmly and
bring the saw to full throttle. Using a steady
pressure, rock the tip of the saw into the
surface using the skid plate as a pivot point
between the system and the surface. Keeping
the weight of the system against the surface
with a firm grip will increase operator
comfort and control during this dangerous
operation.
Cutting - After penetration, follow the contour
of the skid plate until the bar has reached the
approximate angle illustrated at the right.
Position the skid plate on the flat surface,
maintaining full throttle and steady pressure
while keeping the saw on the surface. Pull
the saw back, ripping through the surface.
Avoid cutting through joists and rafters.

10

11

12

13
TROUBLESHOOTING
TROUBLE
1.Engine fails to start.
2.Engine hard start.
3.Engine misses.
CAUSE
No fuel in tank.
Fuel filter clogged.
Fuelline clogged.
Spark plug shorted or fouled.
Spark plug broken (cracked
porcelain or electrodes broken).
Ignition lead wire shorted, broken
or disconnected from spark plug.
lgnition inoperative (no spark from
leadwire).
Water in gasoline or stale fuel
mixture.
Too much oil in fuel mixture.
Engine over or under choked.
Carburetor out of adjustment.
Gasket leaks (carburetor or
cylinder base gasket).
Weak spark at spark plug.
Dirt in fuel line or carburetor.
Carburetorimproperly adjusted.
Spark plug fouled, broken or
incorrect gap setting.
Weak or intermittent spark at
sparkplug.
WHATTO DO
Fill tank.
Replacefilter.
Clean fuel line.
Install new spark plug.
Replace spark plug.
Replace lead wire or attach to spark
plug.
Contact your nearest authorized
dealer.
Drain entire system and refill with
fresh fuel.
Drain and refill with correct mixture.
If flooded by over choking, proceed
according to instructions in previous
section.If under choked, move choke
knob to closed position and crank two
or three times.
See “Carburetor Adjustment”.
Contact your nearest authorized
dealer.
Contact your nearest authorized
dealer.
Remove and clean.
See “Carburetor Adjustment” in
maintenancesection.
Clean or replace spark plug - set gap
to 0.6 - 0.7 mm (0.024 to 0.028 in.).
Contact your nearest authorized
dealer.

14
CAUSE
Air cleaner clogged.
Carburetor out of adjustment.
Muffler clogged.
Clogged exhaust ports.
Poor compression.
Insufficient oil in fuel mixture.
Airflow obstructed.
Spark plug incorrect heat range.
Worn bearings, piston rings or
cylinder walls.
Carburetor main adjustment too
“lean”.
Engine overheats.
Empty oil tank.
Oil filter clogged.
Automatic oiler output set too low.
Chainbrake adjustment.
Chain tension too tight.
Chain tension is too loose.
TROUBLE
4.Engine lacks power.
5.Engine overheats.
6.Engine noisy or knocking.
7.Engine “stalls” under load.
8.No oil on chain.
9.Chain brake fails to work.
10.Chain binds.
11.Chain is loose on bar.
WHATTO DO
Clean air cleaner.
See “Carburetor Adjustment”.
Clean carbon from muffler.
Remove muffler, rotate engine until
the piston is at bottom of cylinder.
With a wooden scraper or blunt tool,
remove all carbon from exhaust ports.
Be careful not to scratch or damage
piston or cylinder walls. Blow out loose
carbon with compressed air.Start
engine and run briefly to remove all
carbon, then install muffler and gasket.
Contact your nearest authorized
dealer.
Mix fuel as shown in starting
instructions.
Clean flywheel and cylinder fins.
Replace with plug specified for engine.
Contact your nearest authorized
dealer.
See “Carburetor Adjustment”.
See “Cleaning Cylinder Fins” in
maintenancesection.
Filltank.
Replacefilter.
Adjustoileroutput.
Adjust chain brake.
Adjustchain tension.
Adjustchain tension.
TROUBLESHOOTING

15
MAINTENANCE
MAINTENANCE SCHEDULE
REQUIRED
CARE
Clean Entire System
Tighten Nuts and Bolts
Clean Air Filter
Inspect Chain
Sharpen Chain
Adjust ChainTension
Adjust Chain Brake
Refill FuelTank
Test Saw
Mix Fuel
Check Spark Plug
Inspect Muffler Assembly
Drain and Replace Fuel
Replace Fuel Filter
Replace Oil Filter
Clean Cylinder Fins
Rewind Starter
Adjust Automatic Oiler
Refill Chain OilTank
CLEAN ENTIRE SYSTEM
(After Each Use)
1. Clean bar and chain with a 50 - 50 mixture of
kerosene and machine oil.
2. Remove the guide bar and clean the clutch and
brake mechanism with a 50 - 50 mixture of
kerosene and machine oil.
3. Clean the exterior of the saw with a non-
flammable solvent.
TIGHTEN NUTS AND BOLTS
(After Each Use)
1.Make sure all fasteners on the saw are tight.
2.Replace those found to be faulty.
AFTER
EACH USE
∗
∗
∗
∗
∗
∗
∗
∗
∗
AS
NEEDED
∗
∗
∗
∗
∗
∗
∗
∗
∗
WEEKLY
∗
EVERY
60 DAYS
∗
PAGE
NO.
12
12
13
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13
13
14
15
15
16
16
17
17
17
17
18
18
19
19

16
SHARPEN CHAIN (As Needed)
1.Follow instructions included with sharpening kit.
2.Refer to page 19 for ECHO part number.
NOTE
Do not sharpen carbide chain with standard
file.
MAINTENANCE
CLEAN AIR FILTER
(After Each Use)
1.Close choke.
2. Off the cleaner cover latch, and remove air filter
cover and air filter .
3. Brush off dust lightly, or clean with compressed
air, or replace the air filter.
4. Reinstall air filter and cover, engage latch.
CLEANER COVER
LATCH
AIR CLEANER COVER
ADJUST CHAIN TENSION
(After Each Use)
1.Loosen nuts just enough to allow guide bar to
slide when adjusting screw is turned.
2.Turn adjusting screw clockwise to take up chain
slack.
3.Hold the nose of the bar up with your gloved
hand.
4.Gradually turn adjusting screw clockwise until the
drive links are drawn up into the bar.
5.Pull chain along bar with your gloved hand to
check for binding.
6.Back off tension screw if necessary.
7.Tighten nuts while holding bar in position.
ADJUSTING SCREW
TENSION
NUTS
NUTS
AIR CLEANER COVER
AIR FILTER
AIR FILTER COVER
SPARK PLUG
CLEANER COVER
LATCH

17
MAINTENANCE
NOTE
Clean parts as you remove them.
INSPECT AND ADJUST CHAIN
BRAKE (After Each Use)
1.Remove the sprocket guard.
2.Remove the bar and chain.
3.Remove the guide bar plate from the sprocket
guard.
4.Turn adjuster position to set its peak to the
correcttensioninglocation.
5.Inspect clutch drum and brake band for wear
and replace if necessary.
6. Reinstall the guide bar plate in the sprocket
guard.
7.Install sprocket guard.
8. Reinstall bar and chain.
9.Set chain tension.SEE ADJUSTTENSION IN
THIS SECTION.
10.Activate the chain brake with the guard and with
a gloved hand try to pull the chain along the top
of the guide bar.
11.Move chain with hand guard in unbraked
position.
12.Start the engine.
13.Depress throttle fully and activate the brake.
WHAT HAPPENED?
Brake Spring Rubs on
Drum
Chain Rotates
Smoothly without Drag
WHAT DOYOU DO?
DecreaseTension and
Go to next Step
Go to next Step
WHAT HAPPENED?
Chain Moves
Chain Does Not Move
WHAT DOYOU DO?
IncreaseTension
Go to Next Step
WHAT HAPPENED?
Chain Slows to a Stop
Brake Spring Rubs on
Drum
Chain Stops
Immediately
WHAT DOYOU DO?
IncreaseTension
DecreaseTension
Brake is Adjusted
Properly
BRAKE BAND
ADJUSTER
DIRECTION TO TENSION
↓↓
↓↓
↓
↑↑
↑↑
↑
1 mm ADJUSTING BRAKE BAND
ADJUSTER
BRAKE BAND
COVER
CAUTION
If proper brake adjustment cannot be
obtained, take your unit to your authorized
ECHO servicing dealer before further use of
system.
MARK

18
MAINTENANCE
TEST SAW
(After Each Use/Weekly)
1.Start the engine and make practice cut in a piece
of 3/4 inch thick plywood. Make cuts using the
ventilating procedure outlined in this manual.
2.Replace faulty parts and make necessary
adjustments.
NOTE
For assistance in diagnosing problems,
consult the troubleshooting section in this
manual.
IMPORTANT
Stored fuel ages. Do not mix more fuel than you
expect to use in thirty (30) days, ninety (90) days
when a fuel stabilizer is added.
Stored two-stroke fuel may separate. ALWAYS
shake fuel container thoroughly before each use.
FUELTANK CAP
REFILL FUELTANK
(After Each Use)
FUEL STATEMENT
GASOLINE - Use 89 Octane [(R+M)/2] gasoline or
gasohol known to be good quality.Gasohol may
contain maximum 10 % ethyl (grain) alcohol or 15 %
MTBE (methyl tertiary-butyl either).Gasohol
containing methyl (wood) alcohol is not approved.
OIL - ECHO brand premium two-stroke 50 : 1 oil is
preferred. Mix oil and gasoline/gasohol according
to Instructions on the oil container label.
MIXING - Following directions on the oil container.
1.Remove fuel tank cap.
2.Pour fuel/oil mixture into fuel tank.
3.Install fuel cap and wipe up any spilled fuel.