Stow G-2.9R User Manual
OPERATION AND PARTS MANUAL
MODEL G-2.9R
PORTABLE AC GENERATOR
(GASOLINE ENGINE)
S/N 5497956 AND BELOW
S/N 5497957 AND ABOVE
Revision #1 (10/28/04)
THIS MANUAL MUST ACCOMPANY
THE EQUIPMENT AT ALL TIMES.
PAGE 2 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
HERE'S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER
STOW MAIN OFFICE
Post Office Box 6254 888-252-STOW
Carson, Ca 90749
Email: stow@multiquip.com
Internet: www.stowmfg.com
PARTS DEPARTMENT
800-427-1244 FAX: 800-672-7877
310-537-3700 FAX: 310-637-3284
SERVICE DEPARTMENT
800-421-1244 FAX: 310-537-4259
310-537-3700
TECHNICAL ASSISTANCE
800-478-1244 FAX: 310-631-5032
WARRANTY DEPARTMENT
800-421-1244, EXT. 279 FAX: 310-537-1173
310-537-3700, EXT. 279
SALES DEPARTMENT
310-661-4242 FAX: 310-604-9237
877-289-7869 (877-BUY-STOW)
ON-HAND
WHEN CALLING
FAX:
310-537-1986
© COPYRIGHT 2004, STOW CONSTRUCTION EQUIPMENT
STOW Construction Equipment and the STOW logo are registered trademarks of STOW and may not be used, reproduced, or
altered without written permission. All other trademarks are the property of thier respective owners and used with permission.
This manual
remain with the unit if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations are based
on the
design or the information published in this publication at any time without notice and without incurring any obligations.
MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should
G-2.9R Portable AC Generator.
STOW Construction Equipment reserves the right to discontinue or change specifications,
To find the latest revision of this
publication, visit our website at:
www.stowmfg.com
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 3
TABLE OF CONTENTS
STOW G-2.9R — AC
Portable Generator
Here's How To Get Help ............................................ 3
Table Of Contents ..................................................... 4
Parts Ordering Procedures ....................................... 5
Dimensions ............................................................... 6
Specifications ............................................................ 7
Safety Alert Message Symbols .............................. 8-9
Rules for Safe Operation ................................... 10-12
Operation and Safety Decals
Operation and Safety Decals
General Information ................................................ 16
Load Application ..................................................... 17
Controls and Indicators ...................................... 18-19
Generator Refueling ............................................... 20
Installation .......................................................... 21-22
Pre-Inspection ......................................................... 23
Pre-Inspection (Engine) .......................................... 24
Initial Start-up (Engine) ........................................... 25
Initial Start-up (Engine/Operation) .......................... 26
Preparation For Long Term Storage ....................... 27
Maintenance ...................................................... 28-29
Wiring Diagram
Wiring Diagram
(S/N 549756 & Below) ................................... 30
(S/N 549757 & Above) ................................... 31
Troubleshooting (Engine) ................................... 32-33
Troubleshooting (Generator) .................................. 34
Explanation Of Codes In Remarks Column ............ 36
Suggested Spare Parts ........................................... 37
(S/N 549756 & Below) ........ 14
(S/N 549757 & Above)........ 15
ROBIN
EX170D20210
Engine (EPA)
Crankcase Assembly ......................................... 52-53
Crankshaft, Piston Assembly .............................54-55
Governor Assembly ........................................... 56-57
Intake and Exhaust Assembly ............................58-59
Air Cleaner Assembly.........................................60-61
Cooling Starting Assembly ................................. 62-63
Carburetor Assembly .........................................64-65
Flywheel Assembly ............................................66-67
Electric Device Assembly ...................................68-69
Terms and Conditions Of Sale — Parts .................. 70
As a continuing effort to
NOTE
update our parts book,
contact the STOW literature
department for the latest
revision of your "Operation
and Parts Manual"
Generator Component
Drawings
Nameplate and Decals (S/N 549756 & Below) ............. 38-39
Nameplate and Decals
Generator Assembly .......................................... 42-43
Control Box Assembly
Control Box Assembly
Pipe Frame Assembly
Pipe Frame Assembly
PAGE 4 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
(S/N 549757 & Above) ............. 40-41
(S/N 549756 & Below) ............... 44-45
(S/N 549757 & Above) .............. 46-47
(S/N 549756 & Below) ............... 48-49
(S/N 549756 & Above)............... 50-51
NOTE
Specification and part
number are subject to change
without notice.
PARTS ORDERING PROCEDURES
When ordering parts,
please supply the following information:
❒❒
❒ Dealer account number
❒❒
❒❒
❒ Dealer name and address
❒❒
❒❒
❒ Shipping address (if different than billing address)
❒❒
❒❒
❒ Return fax number
❒❒
❒❒
❒ Applicable model number
❒❒
❒❒
❒ Quantity, part number and description of each part
❒❒
❒❒
❒ Specify preferred method of shipment:
❒❒
✓ FedEx or UPS Ground
✓ FedEx or UPS Second Day or Third Day
✓ FedEx or UPS Next Day
✓ Federal Express Priority One
✓ DHL
✓ Tr u ck
Note: Unless otherwise indicated by customer, all
orders are treated as “Standard Orders”, and will
ship within 24 hours. We will make every effort to
ship “Air Shipments” the same day that the order is
received, if prior to 2PM west coast time. “Stock
Orders” must be so noted on fax or web forms.
Here’s how to get help...
Please have the model and serial number
on hand when calling.
STOW MAIN OFFICE
18910 Wilmington Ave. 800-421-1244
FAX:
Carson, CA 90746
Email: stow@stowmfg.com
Internet: www.stowmfg.com
SALES DEPARTMENT
310-661-4242 Fax: 310-604-9237
877-289-7869 (877-BUY-STOW)
PARTS DEPARTMENT
800-427-1244
310-537-3700
SERVICE DEPARTMENT
800-421-1244
310-537-3700
TECHNICAL ASSISTANCE
800-478-1244
WARRANTY DEPARTMENT
800-421-1244,
310-537-3700,
EXT.
EXT.
279
279
310-537-3927
FAX:
800-672-7877
FAX:
310-637-3284
FAX:
310-537-4259
FAX:
310-631-5032
FAX:
310-537-1173
Place Your Parts Order Via Web or Fax
For Even More Savings!
(Domestic USA Dealers Only)
Extra Discounts!
All parts orders which include complete part numbers and
are received by our automated web parts order system, or
by fax qualify for the following extra discounts:
Ordered Standard Stock orders
via orders ($750 list and above)
Fax 3% 10%
Web 5% 10%
Special freight allowances
when you order 10 or more
line items via Web or Fax!**
FedEx Ground Service
No other allowances on freight shipped by any other
carrier.
**Common nuts, bolts and washers (all items under $1.00
list price) do not count towards the 10+ line items.
NOTE: DISCOUNTS ARE SUBJECT TO CHANGE
at no charge for freight
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
A DIVISION OF MULTIQUIP INC.
POST OFFICE BOX 6254 CARSON, CA 90749
888-252-STOW [888-252-7869] 310-537-3700
FAX: 310-537-1986 FAX: 800-556-1986
E-MAIL: stow@multiquip.com INTERNET: www.stowmfg.com
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 5
Direct TOLL-FREE access
to our Parts Department:
Toll-free nationwide — 800-427-1244
Toll-free FAX — 800-6-PARTS-7
(800/672-7877)
STOW G-2.9R — DIMENSIONS
Figure 1. Dimensions
PAGE 6 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
STOW G-2.9R — SPECIFICATIONS
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Effects of Altitude and Heat
The maximum output of the engine listed above is applicable to supplying electrical power for continuous service at ambient
conditions in accordance with SAE Test cord J607. The above ambient conditions are at standard sea level, with a barometric
reading of 29.92 inches and a temperature of 60 degrees fahrenheit.
°°
°
°°
Generally, the engine output power will decrease 3 1/2% for each 1000 feet of altitude above sea level, and 1% for each 10
°°
°
fahrenheit above the standard temperature of 60
°°
F
F
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 7
STOW G-2.9R — SAFETY MESSAGE ALERT SYMBOLS
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
Safety precautions should be followed
at all times when operating this
equipment. Failure to read and
understand the Safety Messages and
Operating Instructions could result in
injury to yourself and others.
This Owner's Manual has been
developed to provide complete
instructions for the safe and efficient
NOTE
Before using this generator, ensure that the operating
individual has read and understands all instructions in this
manual.
SAFETY MESSAGE ALERT SYMBOLS
The three (3) Safety Messages shown below will inform you
about potential hazards that could injure you or others. The
Safety Messages specifically address the level of exposure to
the operator, and are preceded by one of three words: DANGER,
operation of the STOW Model G-2.9R
Portable Generator
engine manufacturers instructions for
data relative to its safe operation.
. Refer to the
HAZARD SYMBOLS
Potential hazards associated with the operation of a
G-2.9R Portable Generator
Symbols which appear throughout this manual, and will be
referenced in conjunction with Safety Message Alert
Symbols.
Engine exhaust gases contain
poisonous carbon monoxide. This gas
is colorless and odorless, and can
cause death if inhaled. NEVER operate
this equipment in a confined area or
enclosed structure that does not provide
ample free flow air.
Gasoline is extremely flammable, and
its vapors can cause an explosion if
ignited. DO NOT start the engine near
spilled fuel or combustible fluids.
will be referenced with Hazard
Lethal Exhaust Gases
WARNINGWARNING
WARNING
WARNINGWARNING
WARNINGWARNING
WARNING
WARNINGWARNING
Lethal Exhaust Gas Hazards
Explosive Fuel Hazards
STOW
DANGERDANGER
DANGER
DANGERDANGER
You WILL be
if you DO NOT follow these directions.
WARNINGWARNING
WARNING
WARNINGWARNING
You CAN be KILLED or
you DO NOT follow these directions.
CAUTICAUTI
CAUTION
CAUTICAUTI
You CAN be
these directions.
KILLED
INJURED
if you DO NOT follow
or
SERIOUSLY INJURED
SERIOUSLY INJURED
if
DO NOT fill the fuel tank while the engine is running or
hot. DO NOT overfill tank, since spilled fuel could ignite if
it comes into contact with hot engine parts or sparks from
the ignition system. Store fuel in approved containers, in
well-ventilated areas and away from sparks and flames.
WARNINGWARNING
WARNING
WARNINGWARNING
Engine components can generate extreme
heat. To prevent burns, DO NOT touch
these areas while the engine is running or
immediately after operations. Never
operate the engine with heat shields or heat
guards removed.
WARNINGWARNING
WARNING
WARNINGWARNING
ALWAYS wear approved
protection when required.
Burn Hazards
Respiratory Hazards
respiratory
PAGE 8 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
STOW G-2.9R — SAFETY MESSAGE ALERT SYMBOLS
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
NEVER operate equipment with covers,
or guards removed. Keep fingers, hands,
hair and clothing away from all moving
parts to prevent injury.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
ALWAYS place the power source, circuit
breakers or ON/OFF switch in the OFF
position, when the generator is not in use,
unless connected to transfer switch.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
ALWAYS wear approved eye and
hearing protection.
Rotating Parts Hazards
Accidental Starting Hazards
Eye and Hearing Hazards
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Other important messages are provided throughout this
manual to help prevent damage to your portable generator,
other property, or the surrounding environment.
Equipment Damage
Hazards
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 9
STOW G-2.9R — RULES FOR SAFE OPERATION
DANGERDANGER
DANGER
DANGERDANGER
Failure to follow instructions in this manual may lead
to serious injury or even death! This equipment is to
be operated by trained and qualified personnel only!
This equipment is for industrial use only.
Read this manual!
■
NEVER touch the hot exhaust
manifold, muffler or cylinder. Allow
these parts to cool before servicing
engine or generator.
The following safety guidelines should always be used when
operating the STOW G-2.9R Portable Generator:
GENERAL SAFETY
■
DO NOT operate or service this
equipment before reading this entire
manual.
■
This equipment should not be operated by persons under
18 years of age.
■
NEVER operate this equipment without proper protective
clothing, shatterproof glasses, steel-toed boots and other
protective devices required by the job.
■
NEVER operate this equipment when not
feeling well due to fatigue, illness or taking
medicine.
■
NEVER operate this equipment under the influence of
drugs
or
alcohol
.
■
The engine section of this generator requires an adequate
free flow of cooling air.
any enclosed or narrow area where free flow of the air is
restricted. If the air flow
is restricted it will cause
serious damage to the
generator or engine and
may cause injury to
people. Remember the
generator's engine gives
off
monoxide gas.
■
ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.
■
ALWAYS use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it to
cool. DO NOT
machine. Fire or explosion could result
from fuel vapors, or if fuel is spilled on a
hot engine.
DEADLY
carbon
smoke
around or near the
NEVER
operate the generator in
■
■
ALWAYS wear proper respiratory (mask),
hearing and eye protection equipment when
operating the generator.
■
Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
■
Manufacturer does not assume responsibility for any
accident due to equipment modifications.
■
NEVER use accessories or attachments, which are not
recommended by STOW for this equipment. Damage to
the equipment and/or injury to user may result.
PAGE 10 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
■
NEVER operate the generator in an
explosive atmosphere or near
combustible materials. An explosion or
fire could result causing severe
bodily
harm or even death.
NEVER disconnect any
These devices are intended for operator safety. Disconnection
of these devices can cause severe injury, bodily harm or even
death! Disconnection of any of these devices will void all
warranties.
"emergency or safety devices"
.
STOW G-2.9R — RULES FOR SAFE OPERATION
■
ALWAYS be sure the operator is familiar with proper safety
precautions and operation techniques before using generator.
■
NEVER leave the generator unattended, turn off engine when
unattended.
■
Unauthorized equipment modifications will void all
warranties.
■
ALWAYS ensure generator is on level ground before use.
■
DO NOT place hands or fingers inside generator engine
compartment when engine is running.
■
NEVER run engine without air cleaner. Severe engine damage
may occur.
■
NEVER change or adjust the engine speed which has been
set at the factory prior to shipping.
Power Cord Safety
■
NEVER let power cables or cords
■
NEVER
is being transfer to a load.
■
NEVER use a defective or frayed power cable. Check the
cable for cuts in the insulation.
■
NEVER use a extension cord that is frayed or damaged where
the insulation has been cut.
■
ALWAYS make certain that proper power or extension cord
has been selected for the job See Table 3.
stand in water
while AC power from the generator
lay in wate
r.
Maintenance Safety
■
■
■
■
■
■
■
■
■
■
NEVER lubricate components or attempt service on a running
machine.
High Temperatures – Always stop engine and
allow the engine to cool before adding fuel, oil
or performing service and maintenance
hot!
functions. Contact with
cause serious burns.
Keep the machinery in proper running condition.
Fix damage to the machine immediately and replace any
broken parts immediately.
ALWAYS replace any worn or damaged warning decals.
ALWAYS store equipment properly when it is not being used.
Equipment should be stored in a clean, dry location out of the
reach of children and un-authorized personnel.
The electrical voltage required to operate the generator can
cause severe injury or even death through physical contact
with live circuits.
performing maintenance on the generator.
Dispose of hazardous waste properly. Examples of potentially
hazardous waste are used motor oil, fuel and fuel filters.
DO NOT use food or plastic containers to dispose of
hazardous waste.
DO NOT pour waste, oil or fuel directly onto the ground,
down a drain or into any water source.
Turn all circuit breakers OFF before
components can
Grounding Safety
■
ALWAYS make sure that electrical circuits are properly
grounded
local codes before operating generator. Severe
death!
ungrounded generator.
■
ALWAYS make sure generator is properly grounded to a
suitable earth ground (GROUND ROD). See installation
section in this manual.
■
NEVER use
per the
National Electrical Code
(NEC) and
injury
by electrocution can result from operating an
gas piping
as an electrical ground.
or
■
Removing the engine oil drain plug while
the engine is hot will result in hot oil to gush
out of the oil drain plug, therefore causing
severe scalding to any persons in the general
area of the generator.
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 11
STOW G-2.9R — RULES FOR SAFE OPERATION
DANGERDANGER
DANGER
DANGERDANGER
During operation of this generation, there
exists the possibility of
electrical shock or burn
cause
DEATH!
To avoid these hazards:
severe bodily harm
NEVER use
ELECTROCUTION HAZARDSELECTROCUTION HAZARDS
-
ELECTROCUTION HAZARDS
ELECTROCUTION HAZARDSELECTROCUTION HAZARDS
damaged
or
electrocution
, which can
or even
worn
cables when connecting
,
equipment to the generator. Make sure power connecting
cables are securely connected to the generator’s output
receptacles, incorrect connections may cause damage
to the generator and electrical shock.
Emergencies
■
ALWAYS know the location of the
nearest
■
ALWAYS know the location of the nearest
first aid kit
■
In emergencies
nearest phone or
Also know the phone numbers of the nearest
ambulance, doctor
information will be invaluable in the case of an
emergency.
NEVER grab or touch a live
power cord with wet hands, the
possibility exist of electrical
shock, electrocution, and even
death!
fire extinguisher
.
always
.
know the location of the
keep a phone on the job site
and
fire department
.
. This
NEVER insert any objects into
the output receptacles during
operation. This is extremely
dangerous. ALWAYS turn-off
the generator and place all circuit breakers in the “OFF”
position when contact with the output receptacles is
required. There exist the possibility of
electrocution,
electrical shock or burn, which can cause severe
bodily harm or even death
Backfeed to a utility system can cause
electrocution
NEVER connect the generator to a
building's electrical system without a
transfer switch or other approved device.
All installations should be performed by
licensed electrician
a
with all applicable laws and electrical
codes. Failure to do so could result in
electrical shock or burn causing serious
injury or even death!
and or property damage.
!
in accordance
PAGE 12 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
NOTE PAGE
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 13
OPERATION AND SAFETY DECALS (S/N 5497956 AND BELOW)
Machine Safety Decals
The STOW G-2.9R portable generator is equipped with a number of safety decals (Figures 2A and 2B). These decals are provided
for operator safety and maintenance information. The illustration below shows these decals as they appear on the machine. Should
any of these decals become unreadable, replacements can be obtained from your dealer.
Figure 2A. Operation and Safety Decals (S/N 5497956 and Below)
PAGE 14 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
OPERATION AND SAFETY DECALS (S/N 5497957 AND ABOVE)
Figure 2B. Operation and Safety Decals (S/N 5497957 and Above)
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 15
STOW G-2.9R — GENERAL INFORMATION
STOW G-2.9R Familarization
General Inspection Prior to Operation
This generator has been thoroughly inspected and accepted
prior to shipment from the factory. However, be sure to check
for damaged parts or components, or loose nuts and bolts,
which could have become disloged in transit.
The
STOW Model G-2.9R
a portable lightweight power source for 60 Hz (single-phase)
vibrators, lighting facilities, power tools, submersible pumps
and other industrial and construction machinery.
This generator is powered by a 5.7 HP ROBIN air-cooled
gasoline engine. The alternator, a brushless revolving-field
type, is permanently aligned to the engine through rigid
coupling.
The generator is mounted on rubber vibration isolators that
have a steel base backplate which is attached to the
protective steel pipe carrying frame. The protective carrying
frame is made of steel tubing and fully wraps around the
generator to protect against damage.
This portable generator is supplied with a electrical
panel
. The control panel includes items as listed below.
Control Panel
The generator control panel has the following componets:
■
NEMA 5-20R GFCI duplex receptacle (120V, 20 amps)
■
NEMA L5-20R, twist-lock receptacle (120V, 20 amps), (S/N
5497957 and above)
■
Circuit breaker, single-pole, 22 amps
generator has been designed as
control
Excitation System
The STOW G-2.9R generator uses a magnet attached to a
flywheel to produce AC voltage from a lamp coil beneath
the flywheel. As the magnet passes the coil it produces
approximately 19-22 AC volts.
This voltage (19-22 VAC) is then sent to the control box that
contains three rectifying diodes:
z
Excitation (diode 1)
z
Battery (diode 2)
z
Slow Down (diode 3)
The AC voltage will pass through the excitation diode that
converts the voltage to DC power.
This DC power is then sent to the excitation windings housed
within the main windings commonly called the "stator".
This voltage is then transferred into the rotor through
induction. The rotor contains two diodes within it which rectify
the DC voltage and send it out through the main windings,
as AC voltage.
Engine
The four-cycle air-cooled
to meet every performance requirement of this generator.
Reference Table 1, for engine specifications.
Figure 3 shows the basic controls and indicators for the
STOW G-2.9R generator.
WARNINGWARNING
WARNING
WARNINGWARNING
ROBIN
gasoline engine is designed
■
AC Voltmeter
■
Operation Switch (S/N 5497956 and below)
■
Engine ON/OFF Switch (S/N 5497957 and above)
■
Oil Alarm Lamp (S/N 5497956 and below)
■
GFCI Ground Terminal (S/N 5497956 and below)
■
Ground Terminal
Circuit Breaker
To protect the generator from an overload,
amp circuit breaker is provided on the control panel. Make
sure to switch this circuit breaker to the "OFF" position prior
to starting the engine.
PAGE 16 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
a single-pole, 22
Before connecting this generator to any building’s
electrical system, a licensed electrician must install an
isolation
Serious injury or death may result without this transfer
switch. Please note that the transfer switch can only be
configured with generators that have electric start
capability. Transfer switch should not be used with recoilstart type generators.
(transfer) switch.
NOTE
In keeping with
of constantly improving its
products, the specifications
quoted herein are subject to
change without prior notice.
STOW's
policy
STOW G-2.9R — LOAD APPLICATION
Single Phase Load
Always be sure to check the nameplate on the generator
and equipment to insure the wattage, amperage and
frequency requirements are satisfactorily supplied by the
generator for operating the equipment.
Generally, the wattage listed on the nameplate of the
equipment is its rated output. Equipment may require 130—
150% more wattage than the rating on the nameplate, as
the wattage is influenced by the efficiency, power factor and
starting system of the equipment.
If wattage is not given on the equipment's
NOTE
WATTS = VOLTAGE x AMPERAGE
The power factor of this generator is 1.0 See Table 2 below
when connecting loads.
name plate, approximate wattage may be
determined by multiplying nameplate
voltage by the nameplate amperage.
To determine the running wattage for your load, multiply
the running wattage as indicated by steps 1, 2, and 3 below:
1. INCANDESCENT LOADS
Lights, heaters and similar appliances.
Total the running wattage and multiply by 1.
Example:
29 light bulbs @ 100W each = 2.9 KW
use a 3 KW generator.
2. SMALL MOTORS
Drills and other small power tools.
Total the running wattage and multiply by 2.
Example:
A 1 inch drill runs at 1 KW
use a 2 KW generator.
3. LARGE MOTORS
Submersible pumps, table saws etc.
Total the running wattage and multiply by 3.
Example:
A conveyor belt runs at 8 KW
use a 24 KW generator.
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Motors and motor-driven equipment draw much greater
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current for starting than during operation.
adequate size
required load.
Extension Cables
When electric power is to be provided to various tools or
loads at some
are normally used.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
extension cable
distance
Cables should be sized to allow for
Always
which can carry the
from the generator, extension cords
use an
distance in length and amperage so that the voltage drop
slootrewopnommoC8.0
between the generator and point of use (load) is held to
a minimum
guide for selecting proper cable size.
. Use the cable selection chart (Table 3 ) as a
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 17
STOW G-2.9R — CONTROLS AND INDICATORS
Figure 3. Generator Controls and Components
PAGE 18 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
STOW G-2.9R — CONTROLS AND INDICATORS
1. GFCI Ground – This ground connection point should be
connect to a good earth ground (ground rod). Applies to
units with S/N 5497956 and below.
2. GFCI Receptacle – This receptacle will provide 120V at
all times.
3. AC-Voltmeter – This voltmeter indicates (with a mark) the
rated 60 Hz, single phase output voltage. In addition the
voltmeter can also be used as a diagnostic tool. If the
voltmeter indicator (needle) is below the rated voltage,
engine problems may exist (low/high RPM's). To prevent
damage to the generator or power tools turn the generator
OFF and consult your authorized STOW service dealer.
4. Main Circuit Breaker – This single-pole 22 amp breaker
protects the generator from short circuiting or overloading.
When starting the generator
placed in the "OFF" position.
5. Oil Alarm Indicator – This indicator will light in the event
of low oil.
NOTE
on level ground. Placing the generator on level ground will ensure
that the low oil sensor will function properly.
6. Operation/ON-OFF Switches – For units with S/N
5497956 and below, place
position (up) for normal operation. To turn-off the generator
place switch in the "STOP" position (down). For units with
S/N 5497957 and above, place engine ON/OFF switch in
the "ON" position for normal operation.
always
have the circuit breaker
This
ROBIN
engine is equipped
with a low oil shutdown capability. A
built in sensor will automatically turn
off the engine should the oil level
fall below a safe operating condition.
Make sure the generator is placed
rocker
switch in the "RUN"
To turn-off the
generator place switch in the "OFF" position.
7. 120V Output Receptacle – This NEMA L5-20R twist-
lock receptacle will provide 120V, 20 amps, 60 Hz.
Applies to units with S/N 5497957 and above.
8. Generator Housing – Contains the rotor, rectifer field
coil assembly, aramature, bearings and other components
that make up generator asembly.
9. Spark Plug – Provides spark to the ignition system. Set
spark plug gap to 0.6 - 0.7 mm (0.024 - 0.028 inch). Clean
spark plug once a week.
10. Muffler/Heat Shield – Used to reduce noise and emissions.
NEVER touch this
use. Always allow time for the generator to cool down before
performing maintenance.
heat shield
when the generator is in
ALWAYS allow time for the generator to
down
11. Oil Dipstick/ Filler Cap– Remove the filler cap dipstick
when checking the engine oil level. Add engine oil through
this filler port. See Table 4 for recommended type engine
oil.
12. Oil Drain Plug – Remove this plug to drain engine oil from
the crankcase.
13. Carburetor Fuel Cup – Inspect the fuel cup weekly for
water and dirt. Clean as referenced in the maintenance
section of this manual.
14. Choke Lever – Used for starting the engine.
choke lever when starting a cold engine or in cold weather
conditions. The choke enriches the fuel mixture.
choke lever if starting a warm engine or in warm weather
conditions.
15. Fuel Cock Lever – Turn this lever
(down)the flow of fuel to the carburetor. Turn
stop (up)
16. Throttle Lever – Used to adjust engine RPM speed. This
unit is set at the factory and is not adjustable.
17. Recoil Starter (Pull Rope) – Used for manual-starting of
the engine. Pull the starter grip until resistance is felt, then
pull briskly and smoothly.
18. Engine – This generator uses a 5.1 HP ROBIN aircooled, 4-stroke , single cylinder, overhead camshaft
gasoline engine. Engine uses unleaded fuel.
19. Air Cleaner – Prevents dirt and other debris from entering
the fuel system. Remove wing-nut on top of air filter
cannister to gain access to filter element. NEVER run the
engine without an air cleaner.
20. Fuel Gauge – Read this gauge to determine when fuel is
low
21. Fuel Gauge/Tank – Remove this cap to add unleaded
gasoline to the fuel tank.
gasoline. Make sure cap is tightened securely. DO NOT
over fill. Fuel tank capacity is 3.17 gallons (12 liters).
22. Lifting Bail Eye – Attach a rope or chain to this lifting eye
when lifting of the generator is required. Never stand
underneath the generator while it is being lifted. Place lifting
eye in down position when not in use.
with S/N 5497957 and above.
WARNINGWARNING
WARNING
WARNINGWARNING
cool
before performing maintenance.
downward
the flow of fuel.
.
Replenish
with
clean unleaded
Applies to units
Close
Open
to
start
upward
the
the
to
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 19
STOW G-2.9R — GENERATOR REFUELING
DANGERDANGER
DANGER
DANGERDANGER
Adding fuel to the tank should be done only when
the engine is stopped and has had an opportunity
to cool down. In the event of a fuel spill, DO NOT attempt to start
the engine until the fuel residue has been completely wiped up,
and the area surrounding the engine is dry. If generator is placed
in a truck bed with a plastic liner, REMOVE generator from truck
bed and place on ground (Figure 4) to refuel. This possibility
exist of
fire
or
explosion
due to static electricity.
Figure 4. Generator Refueling
PAGE 20 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
STOW G-2.9R — INSTALLATION
Outdoor Installation
Install the generator in a area that is free of
bystanders
generator is on secure level ground so that it cannot slide or
shift around. Also install the generator in a manner so that
the exhaust will not be discharged in the direction of nearby
homes.
The installation site must be relatively free from moisture
and dust. All electrical equipment should be protected from
excessive moisture. Failure to do will result in deterioration
of the insulation and will result in short circuits and grounding.
Foreign materials such as dust, sand, lint and abrasive
materials have a tendency to cause excessive wear to
engine and alternator parts.
Pay close attention to ventilation when
operating the generator inside tunnels and
caves. The engine exhaust contains
noxious elements.
, and
overhead obstructions
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
. Make sure the
debris
Indoor Installation
,
Exhaust gases from gasoline engines are extremely
poisonous. Whenever an engine is installed indoors the
exhaust fumes must be vented to the outside. The engine
should be installed at least two feet from any outside wall.
Using an exhaust pipe which is too long or too small can
cause excessive back pressure which will cause the engine
to heat excessively and possibly burn the valves.
Eliminate the danger of deadly carbon monoxide gas.
Remember that exhaust fumes from any gasoline engine
are very poisonous if discharged in a closed room, but
harmless if allowed to mix with the outside air. If the generator
is installed indoors, you must make provisions for venting
the engine exhaust to the outside of the building.
Generator Grounding
To guard against electrical shock and possible damage to
the equipment, it is important to provide a good EARTH
ground. Always use the ground terminal on the generator to
ground the generator.
Article 250 (Grounding) of the National Electrical Code (NEC)
provides guide lines for proper grounding and specifies that
the cable ground shall be connected to the grounding system
of the building as close to the point of cable entry as
practical.
Mounting
The generator should always be mounted on a flat level
surface to isolate vibration of the generator when it is
running. DO NOT place the generator on slopes, the
possibility exists that the generator could slide.
NEC articles 250-64(b) and 250-66 set the following
grounding requirements:
1. Use one of the following wire types to connect the
generator to earth ground.
a. Copper - 10 AWG (5.3 mm2) or larger.
b. Aluminum - 8 AWG (8.4 mm2) or larger.
2. When grounding the generator (Figure 3) connect the
ground cable between the lock washer and the nut on
the generator and tighten the nut fully. Connect the other
end of the ground cable to earth ground.
3. NEC article 250-52(c) specifies that the earth ground
rod should be buried a minimum of 8 ft. into the ground.
STOW G-2.9R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #1 (10/28/04) — PAGE 21
STOW G-2.9R — INSTALLATION
Connecting the Ground
The nut and ground terminal on the generator should always be used to connect the generator to a suitable ground. The
ground cable should be #8 size wire minimum.
At the generator, connect the terminal of the ground cable between the lock washer and the nut (Figure 5) and tighten the
nut fully. Connect the other end of the ground cable to a suitable earth ground (ground rod).
Figure 5. Generator Grounding
PAGE 22 — STOW G-2.9R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #1 (10/28/04)
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