Firman P03607, P03501, P03611, P03609, P03606 Owner's Manual

P/N:336745456 Rev:01

OWNER’S MANUAL

Read all safety precautions and instructions carefully
before operating equipment.
Ensure engine is stopped and level before performing
any maintenance or service.

IMPORTANT:

Record product information to reference when ordering parts or
obtaining warranty coverage.

Serial Number:

PORTABLE GENERATOR

MODEL NUMBER

P03607

Rev Level:00

DO NOT RETURN TO
STORE!

CALL US FIRST!

CUSTOMER HOTLINE

1-844-347-6261

FOR QUESTIONS OR SERVICE
INFORMATION

Purchase Date:

Table of Contents

Connecting to a Building’s Electrical

English Customer Service: 1-844-FIRMAN1

Trouble Shooting . . . . . . .. . . . . . . . . . . . . . . . .23

Parts Diagram and Parts List . . . . . . . . . . 24

Generator Parts Digram . . . . . . . . . . . . . .24

Engine Parts Diagram . . . . . . . . . . . . . . .26

Parts List . . . . . . . . . . . . . . . . . . . . . . .. . . .27

Service Information . . . . . . . . . . . . . . . . . . 28

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Thank you for purchasing a FIRMAN generator.

Page 01

Important Safety Information

The manufacturer cannot possibly anticipate every possible circumstance that might involve a
hazard. The warnings in this manual and the tags and decals affixed to the unit are therefore not
all-inclusive. If you use a procedure, work method or operating technique that the manufacturer
does not specifically recommend you must satisfy yourself that it is safe for you and others. You
must also make sure that the procedure work method or operating technique that you choose
does not render the generator unsafe.

DANGER WARNING CAUTION

DANGER indicates a

potentially hazardous

situation which, if not

avoided. WILL result in

death or serious injury.

WARNING indicates a
potentially hazardous
situation which, if not

avoided, could result in

death or serious injury.

CAUTION indicates a

potentially hazardous

situation which, if not
avoided, may result in minor
or moderate personal injury,

or property damage.

Toxic Fumes

Fire Hazard

Hot Surface.
Do Not Touch the Surface.

Kickback

Risk of Electric Shock

Explosion Hazard

Rotating Parts Entanglement
Hazard

Operator’s Manual

INTRODUCTION

English Customer Service: 1-844-FIRMAN1

SAFETY PRECAUTIONS

Page 02

WARNING

POISONOUS GAS HAZARD.

•

•

•

•

WARNING

WARNING

•

English Customer Service: 1-844-FIRMAN1

Page 03

CORRECT USAGE

Example location to reduce risk of carbon monoxide poisoning

•

ONLY use outside and downwind, far away from windows, doors and vents.

•

Direct exhaust away from occupied spaces.

INCORRECT USAGE

Do not operate in any of the following locations:

Near any door, window or vent
Garage
Basement
Crawl Space
Living Area
Attic
Entry Way
Porch
Mudroom

English Customer Service: 1-844-FIRMAN1

Page 04

WHEN OPERATING EQUIPMENT

•

DO NOT tip engine or equipment at angle
which causes fuel to spill.

DO NOT stop engine by moving choke
control to “Start” position.

•

•

WHEN TRANSPORTING, MOVING
OR REPAIRING EQUIPMENT

Transport/move/repair with fuel tank
EMPTY or with fuel shutoff valve OFF.

•

•

DO NOT tip engine or equipment at angle
which causes fuel to spill.
Disconnect spark plug wire.

•

WHEN STORING FUEL OR EQUIPMENT
WITH FUEL IN TANK

•

WARNING

•

•

WARNING

Generator voltage could cause
electrical shock or burn resulting
in death or serious injury.

•

WARNING

•

•

NEVER start or stop engine with electrical
devices plugged in and turned on.

WARNING

Fuel and its vapors are extremely flammable
and explosive which could cause burns, fire,
or explosion resulting in death or serious
injury and/or property damage.

WHEN ADDING OR DRAINING FUEL

Turn generator engine OFF and let it cool at
least 2 minutes before removing fuel cap.
Loosen cap slowly to relieve pressure in tank.
Fill or drain fuel tank outdoors.

•

•

DO NOT overfill tank. Allow space for fuel
expansion.

If fuel spills, wait until it evaporates before
starting engine.

•

Keep fuel away from sparks, open flames,
pilot lights, heat, and other ignition sources.
Check fuel lines, tank, cap, and fittings
frequently for cracks or leaks. Replace if
necessary.
DO NOT light a cigarette or smoke.

•

•

•

•

WHEN STARTING EQUIPMENT

Ensure spark plug, muffler, fuel cap, and air
cleaner are in place.

•

DO NOT crank engine with spark plug
removed.

•

Use approved transfer equipment, suitable
for the intended use, to prevent backfeed by
isolating generator from electric utility
workers.

English Customer Service: 1-844-FIRMAN1

Page 05

WARNING

Unintentional sparking
could cause fire or
electric shock resulting
in death or serious
injury.

WHEN ADJUSTING OR MAKING REPAIRS TO
YOUR GENERATOR

Disconnect the spark plug wire from the
spark plug and place the wire where it cannot
contact spark plug.

•

WHEN TESTING FOR ENGINE SPARK

Use approved spark plug tester.

•

DO NOT check for spark with spark plug
removed.

•

WARNING

NEVER operate generator without protective
housing or covers.
DO NOT wear loose clothing, jewelry or
anything that could be caught in the starter
or other rotating parts.
Tie up long hair and remove jewelry.

•

•

•

•

•

DO NOT exceed the generator’s wattage
amperage capacity.
Start generator and let engine stabilize
before connecting electrical loads.

NOTE:

•

•

•

•

CAUTION

Exceeding generators wattage/amperage capacity
could damage generator and/or electrical devices
connected to it.

Connect electrical loads in OFF position,
then turn ON for operation.
Turn electrical loads OFF and disconnect
from generator before stopping generator.

•

•

•

DO NOT use generator with electrical cords
which are worn, frayed, bare or otherwise
damaged.
DO NOT operate generator in the rain or
wet weather.
DO NOT handle generator or electrical
cords while standing in water, while
barefoot, or while hands or feet are wet.
DO NOT allow unqualified persons or
children to operate or service generator.

•

WARNING

Exhaust heat/gases could ignite combustibles,
structures or damage fuel tank causing a fire,
resulting in death or serious injury and/or
property damage.
Contact with muffler area could cause burns
resulting in serious injury.

DO NOT touch hot parts and AVOID hot
exhaust gases.
Allow equipment to cool before touching.
It is a violation of California Public Resource
Code, Section 4442, to use or operate the
engine on any forest-covered, brush-covered,
or grass-covered land unless the exhaust
system is equipped with a spark arrester, as
defined in Section 4442, maintained in
effective working order. Other states or
federal jurisdictions may have similar laws.
Contact the original equipment manufacturer,
retailer, or dealer to obtain a spark arrester

designed for the exhaust system installed on
this engine.
Replacement parts must be the same and
installed in the same position as the original
parts.

•

•

•

•

When using generator for backup power,
notify utility company.
Use a ground fault circuit interrupter (GFCI)
in any damp or highly conductive area,
such as metal decking or steel work.
DO NOT touch bare wires or receptacles.

•

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•

English Customer Service: 1-844-FIRMAN1

Page 06

•

•

•

•

•

Use generator only for intended uses.

If you have questions about intended use,

ask dealer or contact local service center.

Operate generator only on level surfaces.

DO NOT expose generator to excessive

moisture, dust, dirt, or corrosive vapors.

DO NOT insert any objects through cooling

slots.

If connected devices overheat, turn them off

and disconnect them from generator.

Shut off generator if:

-Electrical output is lost.

-Equipment sparks, smokes, or emits flames.

-Unit vibrates excessively.

•

•

WARNING

Medical and Life Support Uses.

In case of emergency, call 911 immediately.

NEVER use this product to power life support

devices or life support appliances.

NEVER use this product to power medical

devices or medical appliances.

Inform your electricity provider immediately

if you or anyone in your household depends

on electrical equipment to live.

Inform your electrical provider immediately

if a loss of power would cause you or anyone

in your household to experience a medical

emergency.

•

•

•

•

•

NOTE:

Improper treatment of generator could damage
it and shorten its life.

UNPACKING THE GENERATOR

•

•

Parts Included

Your gasoline powered generator ships with
the following parts:

1. Engine Oil(Bottle) . . . . . . . . . . . . . . . . . . . . . . . 1

2. Oil Funnel . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 1

3. Wrench for Spark plug . . . . . . . . . . . . . . . . . . . .1

5. Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

6. Quick Reference Guide . . . . . . . . . . . . . . . . . . . 1

4. Double Open wrench (10mm & 12mm). . . . 2

2

1

Quick
Reference
Guide

3

Manual

6

5

English Customer Service: 1-844-FIRMAN1

4

Page 07

REMOVAL OF SHIPPING SUPPORTS

Before you can run your new generator, follow
these simple instructions:

CAUTION

Failure to remove these items can result
in damage to your generator, possible
Personal injury and void your warranty.

Refer to the following instructions and pictures
to remove the attached engine support brackets
(red) under the engine.

3. You may discard these brackets, as they are no longer
required for normal operation of your generator.

Your generator is now ready for use. Refer to
your owner's manual for proper oil fill and
startup instructions.

Engine Support Brackets
(red color)

Remove these 4 nuts &
bolts as indicated.

Supplied wrenches

English Customer Service: 1-844-FIRMAN1

Page 08

CONTROLS AND FEATURES

Generator

1

2

①

②

③

④

⑤

⑥

⑦

⑧

⑨

⑩

⑪

1- Fuel Gauge
2- 5.0 Gallon Capacity Fuel Tank
3- Fuel Cap
4- Choke Lever
5- Fuel Valve
6- Air Filter
7- 208cc FIRMAN OHV Engine
8- Recoil Starter

9 - Bottle Opener
10 - Oil Filler Cap
11 - Outlet Cover
12 - Control Panel

*We are always working to improve our products. Therefore, the enclosed product may differ
slightly from the image on this page.

®

NOTE:

English Customer Service: 1-844-FIRMAN1

⑨

Page 09

Control Panel

1

2

4-1 Data-Minder(Multi-Meter) – Push the
SELECT button to show the Voltage, Hertz and
running hours. If the low oil indicator is lit,
check the oil level.

3

4

5

7

Ground Terminal – Consult an electrician
for local grounding regulations.

120V, 30A Twist-Lock (NEMA L5-30R)

1

2

3

4

5

6

7

6

120V, 30A RV (NEMA TT-30R)

Total power drawn from all receptacles must not exceed the name plate rating.

NOTE:

8

Outlet Cover - Protect the receptacles from

dust and debris.

8

English Customer Service: 1-844-FIRMAN1

A - Digital display
B - AC voltage indicator
C - Frequency indicator

D - Hour indicator
E - Low oil indicator
F - Select button

Engine Switch – Flip the switch to the “ON”(l)
position and pull the recoil starter to start the
generator. Turn to the “OFF”(O) position to
turn off the generator.

Maximum full load 30 Amp current may be
drawn from this 120 Volt receptacle.

120V, 20A Duplex – (NEMA 5-20R) 20 Amp
of current may be drawn from this 120 Volt
receptacle.

Maximum full load 30 Amp current may be
drawn from this 120 Volt receptacle.

Page 10

SPECIFICATIONS

Model

Rated AC Voltage

Phase

Power Factor

Voltage Regulator

Alternator Type

Running Watts

Starting Watts

Engine

Engine Type

Displacement

Low Oil Shutdown

Ignition System
Starting System

Fuel

Capacity Fuel Tank

Lubricating Oil Capacity

Carburetor Type

Air Cleaner

P.T.O. Shaft Rotation

120V

P03607

3650

AVR

Single

1

Single Cylinder, 4-Stroke OHV Air Cooled

208cc

Breakless Ignition Type, Flywheel Magneto

Unleaded Automotive Gasoline

Recoil

5.0 Gallon

20.3 oz(0.6L)

Counter Clockwise (Facing P.T.O.)

Float

Brushed

Polyurethane Type

Yes

4550

FIRMAN

Rated Fequency

60Hz

Oil Type

See “Add Engine Oil” Section

Spark Plug

AN IMPORTANT MESSAGE ABOUT TEMPERATURE:

When operated above 77°F(25°C) there may be a decrease in power.
Maximum wattage and current are subject to and limited by such factors as fuel BTU content
ambient temperature, altitude, engine condition and etc. Maximum power decreases about

3.5% for each 1,000 feet above sea level; and will also decrease about 1% for each 10°F(6°C)
above 60°F(16°C) ambient temperature.

•

•

TORCH F6RTC/NGK BPR6ES/CHAMPION RN9YC

English Customer Service: 1-844-FIRMAN1

Add Engine Oil

Page 11

1.Place generator on a flat, level surface.

2.Clean area around oil fill and remove yellow
oil fill cap/dipstick.

3.Wipe dipstick clean.

NOTE:

The engine is equipped with a low oil shut-off and
will stop when the oil level in the crankcase falls
below the threshold level.

NOTE:

We consider the first 5 hours of run time to be
the break-in period for the unit. During the break
in period stay at or below 50% of the running
watt rating and vary the load occasionally to allow
stator windings to heat and cool. Adjusting the
load will also cause engine speed to vary and help
seat piston rings.

CAUTION

(H)

DRA IN PLUG

(L)

5.Replace oil fill cap/dipstick and fully tighten.

6.Oil level should be checked prior to each use
or at least every 8 hours of operation. Keep oil
level maintained.

4.Using oil funnel, slowly pour contents of
provided oil bottle into oil fill opening to the
"H" mark on dipstick. Be careful do not
overfill. Overfilling with oil could cause the
engine to not start or hard starting.

H

L

Low oil shutdown

Degrees Celsiusº(Outside)

Full Synthetic 5W-30

Degrees Fahrenheitº(Outside)

5W-30 10W-40

10W-30

CAUTION

engine.

English Customer Service: 1-844-FIRMAN1

Add Fuel

Page 12

Fuel must meet these requirements:

•

Clean, fresh, unleaded gasoline.
Use regular UNLEADED gasoline with the
generator engine with a minimum 87 octane
/ 87 AKI (91 RON).
For high altitude use, see "Operation at High
Altitude".
Do not use gasoline with more than 10%
alcohol such as E85 or ethanol.

•

•

Failure to follow Operator's Manual for fuel
recommendations voids warranty.

Avoid generator damage.

DO NOT use unapproved gasoline such as E85.
DO NOT mix oil in gasoline.
DO NOT modify engine to run on alternate fuels.

•

•

•

WARNING

Fuel and its vapors are extremely flammable
and explosive which could cause burns, fire or
explosion resulting in death, serious injury
and/or property damage.

WHEN ADDING FUEL

Fill fuel tank outdoors.
DO NOT overfill tank. Allow space for fuel
expansion. If the tank is overfilled, fuel
can overflow onto a hot engine and cause fire
or explosion. Wipe up any spilled fuel
immediately.
If fuel spills, wait until it evaporates before
starting engine.
Keep fuel away from sparks, open flames,
pilot lights, heat, and other ignition sources.
Check fuel lines, tank, cap and fittings
frequently for cracks or leaks. Replace if
necessary.
DO NOT light a cigarette or smoke when
filling the fuel tank.

•

•

•

•

1.Clean area around fuel fill cap, remove cap.

2.Slowly add unleaded fuel to fuel tank. Be
careful not to fill above the red fuel level
indicator . This allows adequate space for
fuel expansion.

3.Install fuel cap and let any spilled fuel
evaporate before starting engine or wipe up
any spilled gasoline.

English Customer Service: 1-844-FIRMAN1

CAUTION

Slowly add unleaded gasoline to fuel tank.
Do not overfill tank.
Do not fill above the red line indicator.
This will allow expansion in hot weather
and prevent overflow.

•

•

•

Red Line Indicator

IMPORTANT: It is important to prevent gum
deposits from forming in fuel system parts such
as the carburetor, fuel hose or tank during storage.
Alcohol-blended fuels (called gasohol, ethanol
or methanol) can attract moisture, which leads to
separation and formation of acids during storage.
Acidic gas can damage the fuel system of an engine
while in storage. To avoid engine problems, the
fuel system should be emptied before storage of
30 days or longer. See the " Long Term Storage"
section. Never use engine or carburetor cleaner
products in the fuel tank as permanent damage
may occur.

Operation at High Altitude

At altitudes over 5,000 feet(1524 meters), a
minimum 85 octane / 85 AKI (89 RON) gasoline
is acceptable.
The density of air at high altitude is lower
than at sea level. Engine power is reduced
as the air mass and air-fuel ratio decrease.
Engine power and generator output will be
reduced approximately 3.5% for every 1000 feet
of elevation above sea level. This is a
natural trend and cannot be changed by
adjusting the engine. At high altitudes

Page 13

English Customer Service: 1-844-FIRMAN1

Altitude main jet 1

Altitude main jet 2

208cc

335717002
335717003

Altitude

3000-6000Feet

6000-8000Feet

OPEN

WARNING

Grounding

The National Electric Code requires your generator
must be properly connected to an appropriate
ground to help prevent electric shock.

Failure to properly ground the
generator can result in electric
shock.

WARNING

THERE IS A PERMANENT CONDUCTOR BETWEEN
THE GENERATOR (STATOR WINDING) AND THE
FRAME.

Use approved transfer equipment to prevent
backfeed by isolating generator from electric
utility workers.
When using generator for backup power, notify
utility company.
Use a ground fault circuit interrupter (GFCI) in
any damp or highly conductive area, such as
metal decking or steel work.
DO NOT touch bare wires or receptacles.
DO NOT use generator with electrical cords
which are worn,frayed, bare or otherwise
damaged.
DO NOT operate generator in the rain or wet
weather.
DO NOT handle generator or electrical cords
while standing in water, while barefoot, or
while hands or feet are wet.
DO NOT allow unqualified persons or children
to operate or service generator.

Connecting to a Building's Electrical System

WARNING

Generator voltage could cause
electrical shock or burn resulting
in death or serious injury.

•

•

•

•

•

•

•

•

The part number and recommended minimum
altitude for the application of the hig h
altitude carburetor main jet is listed in the
table below.

main jet and installation instructions can be
obtained by contacting Customer Support.
Installation instructions are also available in the
Technical Bulletin area of the FIRMAN internet site.

increased exhaust emissions can also result due to
the increased enrichment of the air fuel ratio.

Other h igh altit ude issue s can include hard
starting, increa sed fue l consu mption and
sp a rk p l ug f ou l in g . T o al l ev i at e h ig h
alti t u de i s s u es o t h er t h a n t h e na t u ral
power loss, FIR MAN can provide a high
altitude carb uretor main jet. The alternative

OPERATION

Page 14

Generator Location

Make sure you review each warning in order to
prevent fire hazard.

Keep area clear of inflammables or other
hazardous materials.
Select a site that is dry, well ventilated and
protected from the weather.
Keep exhaust pipe clear of foreign objects.
Keep generator away from open flame.
Keep generator on a stable and level surface.

WARNING

Surge Protection

Voltage fluctuation may impair the proper
functioning of sensitive electronic equipment.

WARNING

POISONOUS GAS HAZARD.

•

•

•

•

Do not block generator air vents with paper or
other material.

CAUTION

Tilting can cause fuel spillage.

CAUTION

English Customer Service: 1-844-FIRMAN1

Page 15

Starting the Generator

1. Before starting the generator, check for loose

or missing parts and for any damage which
may have occurred during shipment.

2. Check oil level and fuel.

6. Move the choke lever to the “CHOKE” position.

5. Flip the engine switch to the “ON”(l) position.

8. Do not over-choke. As soon as engine starts
and warms up, move the choke lever to the
“RUN” position.

9. Allow generator to run at no load for few
minutes upon each initial start-up to permit
engine and generator to stablize.

WARNING

When starting engine, pull cord slowly until
resistance is felt and then pull rapidly to avoid
kickback.

4. Turn the fuel valve to the “ON” (l)position.

7. Pull the starter cord slowly until resistance is
felt and then pull rapidly.

3. Disconnect all electrical loads from the
generator. Never start or stop the generator
with electrical devices plugged in or turned
on.

English Customer Service: 1-844-FIRMAN1

Keep choke lever in “CHOKE” position for only 1
pull of the recoil starter. After first pull, move
choke lever to the “RUN” position for up to the
next 3 pulls of the recoil starter. Too much
chok e leads t o sparkp lug foulin g/engi ne
flooding due to the lack of incoming air. This
will cause the engine not to start.

CHOKE

Page 16

Connecting Electrical Loads

1.Let engine stabilize and warm up for a few
minutes after starting.

2.Ensure circuit breaker on control panel is in
on position.

Stopping the Engine

This unit has been pretested and adjusted to
handle its full capacity. Before starting the
generator, disconnect all load. Apply load only
after generator is running. Voltage is regulated
via the engine speed adjusted at the factory for
correct output. Readjusting will void warranty.

CAUTION

When applying a load, do not exceed the maximum
wattage rating of the generator when using one or
more receptacles. Also, do not exceed the amperage
rating of any one receptacle.
Do not apply heavy electrical load during break-in
period (the first five hours of operations).

WARNING

Let the generator run at no-load for two
minutes to stabilize internal temperatures
of the engine and generator.

If a cover is used, do not install until unit has cooled.

Fuel and its vapors are extremely flammable and
explosive which could cause burns, fire or
explosion resulting in death, serious injury
and/or property damage.

2. Press the engine switch to the “OFF”(O) position.

3. Turn the fuel valve to the “OFF”(O) position.

Do not leave the generator until it has
completely stopped.

English Customer Service: 1-844-FIRMAN1

Page 17

Do Not Overload Generator

DO NOT stop engine by moving choke control
to “CHOKE” position.

Important: Always ensure that the Fuel Valve
and the Engine Switch are in the “OFF” position
when the engine is not in use.

If the engine will not be used for a period of two
weeks or longer, please see the Storage section
for proper engine and fuel storage.

Low Oil Shutdown

If the engine oil drops below a preset level, an
oil switch will stop the engine. Check oil level
with dipstick.
If oil level is between LOW and HIGH mark on
dipstick:

1.DO NOT try to restart the engine.

2.Contact an Authorized FIRMAN Service Dealer.

3.DO NOT operate engine until oil level is
corrected.
If oil level is below LOW mark on dipstick:

1.Add oil to bring level to HIGH mark.

2.Restart engine and if the engine stops again
a low oil condition may still exist. DO NOT try
to restart the engine.

3.Contact an Authorized FIRMAN Service Dealer.

4.DO NOT operate engine until oil level is
corrected.

Overloading a generator in excess of its rated
wattage capacity can result in damage to the
generator and to connected electrical devices.

To prolong the life of your generator and
attached devices, follow these steps to add
electrical load:

1. Start the generator with no electrical load
attached.

2. Allow the engine to run for several minutes
to stabilize.

3. Plug in and turn on the first item. It is best to
attach the item with the largest load first.

4. Allow the engine to stabilize.

5. Plug in and turn on the next item.

6. Allow the engine to stabilize.

7. Repeat steps 5-6 for each additional item.

English Customer Service: 1-844-FIRMAN1

MAINTENANCE AND STORAGE

MAINTENANCE SCHEDULE

Page 18

ITEM NOTES

Daily(Before
operation)

Initial
25 hours

Every
50 hours

Every
100 hours

(or annual)

Fittings/
Fasteners

Spark Plug

Engine Oil

Air Filter

Fuel Filter

Fuel Line

Exhaust
System

Carburetor

Starting
System

Check condition. Adjust gap
and clean. Replace if necessary.

Check oil level.

Clean, replace if necessary.

Clean fuel filter and fuel tank
strainer. Replace if necessary.

Check for leakage. Retighten or
replace gasket if necessary.

Check choke operation.

Check recoil starter operation.

Check. Replace if necessary.

Check fuel hose for cracks or other
damage. Replace if necessary.

√

√

√

√

√

√

√

√

√

√

√

√

General Recommendations

Regular maintenance will improve the performance and extend the life of the generator. See any
authorized dealer for service.
The generator's warranty does not cover items that have been subjected to operator abuse or
negligence. To receive full value from the warranty, the operator must maintain the generator as
instructed in this manual.
Some adjustments will need to be made periodically to properly maintain your generator.
All service and adjustments should be made at least once each season. Follow the requirements
in the Maintenance Schedule chart above.

Notice Once a year you should clean or replace the spark plug and replace the air filter. New
spark plugs and clean air filter assure proper fuel-air mixture and help your engine run better
and last longer.

Replace.

Check spark arrester screen.
Clean/Replace if necessary.

English Customer Service: 1-844-FIRMAN1

ENGINE MAINTENANCE

Air Filter Maintenance

Use fresh and high quality lubricating oil to the
specified quantity.
If contaminated or deteriorated oil is used or
the quantity of the engine oil is not sufficient,
engine damage will result and its life will be
greatly shortened.

Page 19

NOTE:

Change Engine Oil

To prevent accidental starting, remove and
ground spark plug wire before performing any
service.

If you are using your generator under extremely
dirty or dusty conditions, or in extremely hot
weather, change the oil more often.

Avoid prolonged or repeated skin contact with
used motor oil.

CAUTION

Used motor oil has been shown to cause skin
cancer in certain laboratory animals.
Thoroughly wash exposed areas with soap
and water.

•

•

•

(a) Drain oil by removing the drain plug and the
oil filler cap while the engine is warm.

Change engine oil every 100 hours.
(for a new engine, change oil after 25 hours.)

DRAIN PLUG

Please use a container to dispose of the oil at an
approved recycling center.
(b) Reinstall the drain plug and fill the engine
with oil until it reaches the HIGH(H) level on the
oil filler cap.

Maintaining an air filter in proper condition is
very important. Dirt induced through improperly
installed, improperly serviced, or inadequate
elements damages and wears out engines.
Always keep the element clean.
(a) Take out the air cleaner, clean it well in
kerosene and dry it.

(b) After wetting the element with clean engine
oil squeeze it tight by hand.

(c)Lastly, put the element in the case and install
it securely.

English Customer Service: 1-844-FIRMAN1

Page 20

Spark Plug Maintenance

Changing the spark plug will help your engine
to start easier and run better.
(a) Remove the spark plug cap.

(d) Adjust the electrode gap to 0.7 to 0.8 mm
(0.028” to 0.031”).
(e) Seat spark plug in position and thread by
hand to prevent cross threading.
(f) Tighten plug with provided wrench and put
the cap back on spark plug.

SPARK PLUG: TORCH F6RTC
NGK BPR6ES
CHAMPION RN9YC equivalent.

Cleaning Fuel Strainer

Dirt and water in the fuel are removed by the fuel
strainer.

(a) Remove the strainer cup and throw away water
and dirt.

(b) Clean the screens and strainer cup with gasoline.

(c) Tightly fasten the cup to main body,
making sure to avoid fuel leak.

SCREEN
O-ring

CUP

BODY

(b) Remove spark plug using provided wrench.

Inspect spark plug for damage and clean
with a wire brush before reinstalling

Inspect Muffler and Spark Arrester

Inspect the muffler for cracks, corrosion, or
other damage. Remove the spark arrester, if
equipped, and inspect for damage or carbon
blockage. If replacement parts are required,
make sure to use only original equipment
replacement parts.

Exhaust heat/gases could ignite combustibles,
structures or damage fuel tank causing a fire,
resulting in death or serious injury and/or
property. Contact with muffler area could cause
burns resulting in serious injury.

WARNING

A

B

A- Spark plug
B- Spark plug cap

c) (

English Customer Service: 1-844-FIRMAN1

Page 21

DO NOT touch hot parts and AVOID hot exhaust
gases.

Allow equipment to cool before touching.

Keep at least 5 feet (1.5 m) of clearance on all

sides of generator including overhead.

Replacement parts must be the same and
installed in the same position as the original
parts.

Clean or replace spark arrester as follows:

1. Allow the engine to cool completely before
servicing the spark arrester.

2. Remove the screws securing the spark arrester
in place and the remove it from muffler.

3. Carefully remove the carbon deposits from
the spark arrester screen with a wire brush.

Failure to clean the spark arrester will result in
degraded engine performance.

GENERATOR MAINTENANCE

Make certain that the generator is kept clean
and stored properly. Only operate the unit on
a flat, level surface in a clean, dry operating
environment. DO NOT expose the unit to
extreme conditions, excessive dust, dirt,
moisture or corrosive vapours.

DO NOT use a garden hose to clean the generator.
Water can enter the generator through the cooling
slots and damage the generator windings.

Use a damp cloth to clean exterior surfaces of
the generator.
Use a soft bristle brush to remove dirt and oil.
Use an air compressor (25 PSI) to clear dirt and
debris from the generator.
Inspect all air vents and cooling slots to ensure
that they are clean and unobstructed.

•

•

•

•

Depending on the type fuel used ,the type and
amount of lubricant used, and/or your operating
conditions, the exhaust part and muffler may
become blocked with carbon deposits. If you
notice power loss, you may need to remove these
deposits to restore performance.

CAUTION

CAUTION

4. Replace the spark arrester if it is damaged.

5. Position the spark arrester in the muffler and
attach with the screws.

Spark arrester
screen

Flange

Screw

English Customer Service: 1-844-FIRMAN1

SERVICE AND STORAGE

Infrequent Service

If the unit is used infrequently, difficult starting
may result. To eliminate hard starting, follow
these instructions:

1. Run the generator at least 30 minutes every
month.

2. Run the generator, then close the fuel shut-off
valve and allow the unit to run until the engine
stops.

3. Move the engine switch to the "OFF" position.

Page 22

English Customer Service: 1-844-FIRMAN1

DANGER

Long Term Storage

It is important to prevent gum deposits from forming
in essential fuel system parts such as the carburetor,
fuel hoses or tank during storage. Also, experience
indicates that alcohol-blended fuels (called gasohol,
ethanol or methanol) can attract moisture, which leads
to separation and formation of acids during storage.
Acidic gas can damage the fuel system of an engine
while in storage.
When the generator set is not being operated, or
is being stored for more than one month, follow
these instructions to avoid engine problems:
1-ADD a properly formulated commercially FUEL
STABILIZER to the tank if it is not already added.
2-Operate the engine for 5-10 minutes to circulate
treated fuel into fuel lines and carburetor before

3- After engine cools down, remove all gasoline
from the fuel tank. Use a commercially available,
non-conductive vacuum siphon.

shutdown.

Drain fuel into approved container outdoors,
away from open flame. Be sure engine is cool.
Do not smoke.

4-FUEL STARVATION: Start and run the generator
until it stops from lack of fuel. This will dry out all
remaining fuel in tank, fuel lines and carburetor.

7-Remove spark plug and pour about one teaspoon
of engine oil through the spark plug hole, then pull
the recoil starter several times to distribute the oil for
lubricating the cylinder. Reattach the spark plug.
Pull recoil slowly until resistance is felt. This will
close the valves so moisture cannot enter engine
cylinder. Gently release recoil starter.

5-Allow the unit to cool entirely before cleaning
and storage.

6-Change oil with recommended grade oil.

Any damages or hazards caused by using
improper fuel, improperly stored fuel, and/
or improperly formulated stabilizers, are not
covered by manufacturer's warranty.

•

8-Keep the engine switch and fuel valve on “OFF”
position.
9-Cover the unit and store in a clean, dry place
out of direct sunlight. NEVER USE WATER TO

CLEAN GENERATOR.

NOTE:

We recommend always using a fuel stabilizer.
A FUEL STABLIZER will minimize the formula­tion of fuel gum deposits during storage, the
fuel stabilizer can be added to the gasoline in
the fuel tank, or into the gasoline in a storage
container.

•

If it is not practical to empty the fuel tank and
the unit is to be stored for some time, use a
commercially available FUEL STABILIZER added
to the gasoline to increase the life of the gasoline.
Run the unit for 5-10 minutes, turn off the fuel
valve and allow to run until engine stops from
lack of fuel (FUEL STARVATION).

•

Do not store gasoline from one season to
another season.

•

TROUBLE SHOOTING

Page 23

Problem Cause Correction

Engine is running, but no
AC output is available.

1. Circuit breaker is open.

2. Fault in generator.

3. Poor connection or defective cord
set.

4. Connected device is bad.

1. Reset circuit breaker.

2. Contact authorized service facility.

3. Check and repair.

4. Connect another device that is in
good condition.

Engine runs good at
no-load but “bogs down”
when loads are connected.

1. Short circuit in a connected load.

2. Engine speed is too slow.

3. Generator is overloaded.

4. Shorted generator circuit.

1. Disconnect shorted electrical load.

2. Contact authorized service facility.

3. See Don't Overload Generator

4. Contact authorized service facility.

Engine will not start; starts
and runs rough or shuts
down when running.

1. Engine switch set to OFF (O)
position.

2. Fuel shutoff lever is in OFF (O)
position.

3. Low oil level.

4. Dirty air cleaner.

5. Out of fuel.

6. Stale fuel.

7. Spark plug wire not connected to
spark plug.

8. Bad spark plug.

9. Water in fuel.

10. Flooded.

11. Excessively rich fuel mixture.

12. Intake valve stuck open or closed.

13. Engine has lost compression.

1. Set engine switch to ON (l)
position.

2. Move fuel shutoff lever to ON (l)
position.

3. Fill crankcase to proper level or
place generator on level surface.

4. Clean or replace air cleaner.

5. Fill fuel tank.

6. Drain fuel tank and carburetor; fill
with fresh fuel.

7. Connect wire to spark plug.

8. Replace spark plug.

9. Drain gas tank and carburetor; fill

with fresh fuel.

10. Wait 5 minutes and re-crank engine.

11. Contact authorized service facility.

12. Contact authorized service facility.

13. Contact authorized service facility.

Engine lacks power.

1. Load is too high.

2. Dirty air filter.

1. Don't Overload Generator

2. Replace air filter.

Engine“hunts”or falters.

1. Carburetor is running too rich or too lean.

1. Contact authorized service facility.

14. Clogged or dirty fuel filter.

5. Clean or replace fuel filter.

14. Clean or replace fuel filter.

3. Clogged or dirty fuel filter.

4. Clogged spark arrester.

3. Clean or replace fuel filter.

4. Clean or replace spark arrester.

2. Clogged or dirty fuel filter. 2. Clean or replace fuel filter.

Engine shuts down when
running.

1. Out of fuel.

2. Dirty air cleaner.

3. Low oil level.

1. Fill fuel tank.

2. Clean or replace air cleaner.

3. Fill crankcase to proper level or place.
generator on level surface.

5. Clogged or dirty fuel filter.

English Customer Service: 1-844-FIRMAN1

Page 24

PARTS DIAGRAM AND PART S LIST

P03 607 Par ts Diag ram

Eng lish Cus tomer S ervic e: 1-84 4-FIR MAN1

Page 25

FIR MAN 208 cc Engi ne Part s Diagr am

Eng lish Cus tomer S ervic e: 1-84 4-FIR MAN1

Page 26

P03607 Parts List

336713500
336713501
336713502
336713503
336713504
336713505
336713506
336713507
336713508
336713509
336713510
336713511
336713512
336713513
336713514
336713515
336713516
336713517
336713518
336713519
336713520
336713521
336713522
336713523
336713524
336713525
336713526
336713527
336713528
336713529
336713530
336713531
336713532
336713533
336713534
336713535
336713536
336713537
336713538
336713539
336713540
336713541
336713542
336713543
336713544
336713545
336713546
336713547
336713548
336713549
336713550

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

Qty.

FIRMAN 208cc Engine

NO.

Part Number

Description

Qty.

NO.

Part Number Description

1
1
1
1
1
1
1
3
1
3
1
4
4
4
1

11

1
1
1
2
2
1
1
1
1
1
1
1
3
1
1
3
1
2
2
1
1
1
2
1
4
1
4
4
4
1
2
1
1
1
1

336713551
336713552
336713640
336713558
336713562
336713563
336713564
336713565
336713566
336713567
336713568
336713569
336713570
336713571
336713572
336713573
336713574
336713575
336713576
336713577
336713578
336713579
336713580
336713581
336713582
336713583
336713584
336713585
336713586
336713587
336713588
336713589
336413500
336413502
336413503
336713634
336713635
336713636
336713637
336713638
336713559
336713639

Fuel Valve
Guard, Muff.
Frame
Nut M8
Isolator A
Isolator B
Grommet
Screw M5×14
Control Box
Nut M3
Nut M4

Multi Meter
Control Panel
Engine Switch
Outlet Cover L5-30R
Outlet Cover TT-30R
Outlet Cover 5-20R
Fig. Bolt M5×16
Nut M5
Nut M5
Flat Washer (5)
Star Washer (5)
Grommet
Sleeve
Receptacle L5-30R
Receptacle TT-30R
Circuit Breaker Amp 20A
Circuit Breaker Amp 30A
Grommet
Receptacle 5-20R Duplex

Control Panel Assy.
Rotor And Stator Set
Spark Arrestor Kit
Fuel hose 1
Fuel hose 2
Carbon Canister Shield
Carbon Canister(650cc)
Carbon Canister Holder
Flange Bolt M8×16
Carbon Canister Bracket

Screw&washer Assy M5×14

52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93

1
1
1
8
2
2
1
2
1
2
8
5
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1

Screw&washer Assy M4×8

Screw&washer Assy M5×38

English Customer Service: 1-844-FIRMAN1

Rubber Cap 2
Rubber Cap1
Rotor Assy
Stator Assy
Stator Cover
Generator End Cover
Flange Bolt M5×12
Flange Bolt M8×252
Lock Washer Ø8
Flat Washer Ø8
Flange Bolt M6×179
Lock Washer Ø6
Flat Washer Ø6
Ground Wire
Flange Bolt M6×12
Star Washer Ø6
Nut M6
AVR
Flange Bolt M5×16
Bolt &washer Assemblies
Generator End Cover Cap
Ground Wire
Terminal Block
Bolt &washer Assemblies
Carbon Brush Holder
Carbon Brush Assembly
Air Cleaner Bracket
Flange Bolt M6×8

Muffler Fixed Plate B (big)
Flange Bolt M8×20
Muffler Gasket
Flat Washer Ø8
Nut M8
Muffler Assembly
Arrester, Spark
Holder, Spark Arrester

Formed Vapor Hose
Clamp Ø8×6
Fuel Tank Assy.
Grommet, Fuel Tank
Washer Tank Buffer
Flange Bolt M6×20
Fuel Gauge Assy.
Screw M5×10
Fuel Gauge Display
Fuel Filter, Wire Mesh
Fuel Cap
Hose, Fuel

Muffler Fixed Plate A (small)

Page 27

FIRMAN 208cc Engine Parts List

336723500
336723501
336723502
336723503
336723504
336723505
336723506
336723507
336723508
336723509
336723510
336723511
336723512
336723513
336723514
336723515
336723516
336723517
336723518
336723519
336723520
336723521
336723522
336723523
336723524
336723525
336723526
336723527
336723528
336723529
336723530
336723531
336723532
336723533
336723534
336723535
336723536
336723537
336723538
336723539
336723540
336723541
336723542
336723543
336723544
336723545
336723546
336723547
336723548
336723549
336723550
336723551
336723552

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

NO.

Part Number

Description

Qty.

1
2
1
8
1
2
1
1
1
1
1
1
1
2
6
1
2
1
1
1
1
1
3
1
1
1
7
4
2
2
1
2
1
1
1
2
2
2
1
2
1
1
1
2
2
2
2
2
1
2
1
1
1

336723553
336723554
336723555
336723556
336723557
336723558
336723559
336723560
336723561
336723562
336723563
336723564
336723565
336723566
336723567
336723568
336723569
336723570
336723571
336723572
336723573
336723574
336723575
336723576
336723577
336723578
336723579
336723580
336723581
336723582
336723583
336723584
336723585
336723586
336723587
336723588
336723589
336723590
336723591
336723592
336723593
336723594
336723595
336723596
336723597
336723598
336713532
336423500
336423501
336423502
336423503
336423504
336423505

54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

99
100
101
102
103
104
105
106

NO.

Part Number

Description

Qty.

1
1
3
1
1
1
4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

English Customer Service: 1-844-FIRMAN1

Crankcase Subassembly.
Locating Pins
Sensor, Engine Oil
Flg. Bolt M6×12
Camshaft Assy.
Bearing
Gear, Crankshaft
Woodruff Key
Crankshaft
Gear, Drive
Gasket, Crankcase
Oil Dipstick Assy
Cover, Crankcase
Seal, Oil
Flg. Bolt M8×32
Rod, Connecting
Clip, Piston Pin
Pin, Piston
Piston
Ring Set, Oil
Ring, The Second
Ring, The First
Flg. Bolt M6×8
Air Guide Lower

Flg. Bolt M6×15
Flg. Bolt M8×55
Nut, Valve Lock
Nut Valve Adjusting
Breather Tube
Rocker, Valve
Rotator, Valve
Retainer, Intake Valve
Retainer, Exhaust Valve
Spring, Valve
Oil Seal, Valve
Bolt, Valve Adjusting

Exhaust Valves Stud Bolt

Valve, Intake
Valve, Exhaust
Push Rod
Tappet, Valve
Washer, Drain Bolt
Bolt, Drain Plug
Locating Pins
Gasket, Cylinder Head
Stud, Intake
Gasket, Inlet
Plate, Carburetor Insulator
Gasket, Carburetor

Cover Subassembly, Cylinder Head

Gasket, Cylinder Head Cover

Plate Subassembly, Lifter Stopper

Head Subassembly, Cylinder

Page 28

SERVICE INFORMATION

CONTACT THE

FIRMAN

PRODUCT SERVICE

DEPARTMENT AT

1-844-347-6261

or at www.firmangenerators.com

to obtain warranty service

information or to order

replacement parts or

accessories.

HOW TO ORDER REPLACEMENT PARTS

1. Model No. ,Rev. Level and Serial No. and all
specifications shown on the Model No./Serial
No. plate.

2. Parts number or numbers as shown in the
Parts List section.

3. A brief description of the trouble with the
generator.

REGISTER YOUR PRODUCT

Register your Firman generator online

at www.firmangenerators.com

WARRANTY

FIRMAN Three (3) Year Limited Warranty

Do Not Return the Unit to the Place
of Purchase

Contact the FIRMAN Service Center and FIRMAN
will troubleshoot any issue via phone or e-mail.
If the problem is not corrected by this method,
FIRMAN will, at its option, authorize evaluation,
repair or replacement of the defective part or
component at a FIRMAN Service Center. FIRMAN
will provide you with a case number for warranty
service. Please keep it for future reference.
Repairs or replacements without prior authoriz

-ation, or at an unauthorized repair facility, will
not be covered by this warranty.

Normal Wear

Your product needs periodic parts and service
to perform well. This warranty does not cover
repair when normal use has exhausted the life
of a part or the equipment as a whole.

English Customer Service: 1-844-FIRMAN1