Stow G-4.5R Guide

OPERATION AND PARTS MANUAL
MODEL G-4.5R
PORTABLE AC GENERATOR
(GASOLINE ENGINE)
S/N 5498030 AND BELOW
S/N 5498031 AND ABOVE
Revision #3 (03/13/06)
THIS MANUAL MUST ACCOMPANY
THE EQUIPMENT AT ALLTIMES.

PAGE 2 — STOW G-4.5R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #3 (03/13/06)

STOW G-4.5R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #3 (03/13/06) — PAGE 3
HERE'S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
STOW MAIN OFFICE
Post Office Box 6254 888-252-STOW
Carson, Ca 90749 FAX: [phone]
Email: [email protected]
Internet: www.stowmfg.com
PARTS DEPARTMENT
800-427-1244 FAX: [phone]
310-537-3700 FAX: [phone]
SERVICE DEPARTMENT
800-421-1244 FAX: [phone]
310-537-3700
TECHNICAL ASSISTANCE
800-478-1244 FAX:[phone]
WARRANTY DEPARTMENT
800-421-1244, EXT. 279 FAX: [phone]
310-537-3700, EXT. 279
SALES DEPARTMENT
310-661-4242 FAX:[phone]
877-289-7869 (877-BUY-STOW)
© 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 MUST accompany the equipment at all times.This manual is considered a permanent part of the equipment and should
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
G-2.9R Portable AC Generator. STOW Construction Equipment reserves the right to discontinue or change specifications,
design or the information published in this publication at any time without notice and without incurring any obligations.
To find the latest revision of this
publication, visit our website at:
www.stowmfg.com

PAGE 4 — STOW G-4.5R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #3 (03/13/06)
TABLE OF CONTENTS
Specification and part
number are subject to change
without notice.
ROBIN EX270D20110
Engine (EPA)
Crankcase Assembly .........................................56-57
Crankshaft, Piston Assembly .............................58-59
Governor Assembly ........................................... 60-61
Intake and Exhaust Assembly ............................ 62-63
Air Cleaner Assembly......................................... 64-65
Cooling Starting Assembly .................................66-67
Fuel Lubricant Assembly ...................................68-69
Flywheel Assembly ............................................70-71
Electric Device Assembly ...................................72-73
Terms and Conditions Of Sale — Parts .................. 74
NOTE
NOTE
As a continuing effort to
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 5498030 & Below) ............ 42-43
Nameplate and Decals (S/N 5498031 & Above) ........... 44-45
Generator Assembly .......................................... 46-47
Control Box Assembly (S/N 5498030 & Below) ............. 48-49
Control Box Assembly (S/N 5498031 & Above) ............ 50-51
Pipe Frame Assembly (S/N 5498030 & Below) .............. 52-53
Pipe Frame Assembly (S/N 5498031 & Above) .............. 54-55
STOW G-4.5R — 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 (S/N 5498030 & Below) ...... 14
Operation and Safety Decals (S/N 5498031 & Above) ...... 15
General Information ................................................ 16
Load Application ..................................................... 17
Controls and Indicators ...................................... 18-21
Generator Refueling ............................................... 22
Installation .......................................................... 23-24
Pre-Inspection ......................................................... 25
Pre-Inspection (Engine) .......................................... 26
Initial Start-up (Engine) ........................................... 27
Initial Start-up (Engine/Operation) ..................... 28-29
Preparation For Long Term Storage ....................... 30
Maintenance ...................................................... 32-33
Wiring Diagram (S/N S/N 5498030 & Below) .......................... 34
Wiring Diagram (S/N 5498031 & Above) ................................. 35
Troubleshooting (Engine) ................................... 36-37
Troubleshooting (Generator) .................................. 38
Explanation Of Codes In Remarks Column ............ 40
Suggested Spare Parts ........................................... 41

STOW G-4.5R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #3 (03/13/06) — PAGE 5
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.
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENTSTOW CONSTRUCTION EQUIPMENT
STOW CONSTRUCTION EQUIPMENT
A DIVISION OF MULTIQUIP INC.
POST OFFICE BOX 6254 CARSON, CA 90749
888-252-STOW[888-252-7869] 310-537-3700
FAX: [phone] FAX: [phone]
E-MAIL: [email protected] INTERNET: www.stowmfg.com
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
Carson, CA 90746
FAX: [phone]
Email: [email protected]
Internet: www.stowmfg.com
SALES DEPARTMENT
310-661-4242 Fax: [phone]
877-289-7869 (877-BUY-STOW)
PARTS DEPARTMENT
800-427-1244 FAX: [phone]
310-537-3700 FAX: [phone]
SERVICE DEPARTMENT
800-421-1244 FAX: [phone]
310-537-3700
TECHNICAL ASSISTANCE
800-478-1244 FAX: [phone]
WARRANTY DEPARTMENT
800-421-1244, EXT. 279 FAX: [phone]
310-537-3700,
EXT. 279
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 at no charge for freight
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.
Place Your Parts Order Via Web or Fax
For Even More Savings!
(Domestic USA Dealers Only)
NOTE:DISCOUNTSARESUBJECTTOCHANGE
Direct TOLL-FREE access
to our Parts Department:
Toll-free nationwide — 800-427-1244
Toll-free FAX — 800-6-PARTS-7 (800/672-7877)

PAGE 6 — STOW G-4.5R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #3 (03/13/06)
STOW G-4.5R — DIMENSIONS
Figure 1. Dimensions

STOW G-4.5R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #3 (03/13/06) — PAGE 7
STOW G-4.5R — SPECIFICATIONS
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
°°
°°
°
F
fahrenheit above the standard temperature of 60
°°
°°
°
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PAGE 8 — STOW G-4.5R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #3 (03/13/06)
STOW G-4.5R — SAFETY MESSAGE ALERT SYMBOLS
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.
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
This Owner's Manual has been
developed to provide complete
instructions for the safe and efficient
operation of the STOW Model G-4.5R
Portable Generator . Refer to the
engine manufacturers instructions for
data relative to its safe operation.
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,
NOTE
You WILL be KILLED or SERIOUSLY INJURED
if you DO NOT follow these directions.
You CAN be KILLED or
SERIOUSLY INJURED if
you DO NOT follow these directions.
You CAN be
INJURED if you DO NOT follow
these directions.
CAUTICAUTI
CAUTICAUTI
CAUTION
DANGERDANGER
DANGERDANGER
DANGER
WARNINGWARNING
WARNINGWARNING
WARNING
Lethal Exhaust Gases
HAZARD SYMBOLS
Potential hazards associated with the operation of a STOW
G-4.5R Portable Generator
will be referenced with Hazard
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.
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.
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.
ALWAYS wear approved respiratory
protection when required.
Lethal Exhaust Gas Hazards
WARNINGWARNING
WARNINGWARNING
WARNING
Explosive Fuel Hazards
WARNINGWARNING
WARNINGWARNING
WARNING
Burn Hazards
WARNINGWARNING
WARNINGWARNING
WARNING
Respiratory Hazards
WARNINGWARNING
WARNINGWARNING
WARNING
Before using this generator,ensure that the operating
individual has read and understands all instructions in this
manual.

STOW G-4.5R A.C. GENERATOR — OPERATION & PARTS MANUAL — REV. #3 (03/13/06) — PAGE 9
STOW G-4.5R — SAFETY MESSAGE ALERT SYMBOLS
ALWAYS wear approved eye and
hearing protection.
NEVER operate equipment with covers,
or guards removed. Keep fingers, hands,
hair and clothing away from all moving
parts to prevent injury.
Rotating Parts Hazards
CAUTIONCAUTION
CAUTIONCAUTION
CAUTION
Eye and Hearing Hazards
CAUTIONCAUTION
CAUTIONCAUTION
CAUTION
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
CAUTIONCAUTION
CAUTIONCAUTION
CAUTION
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.
Accidental Starting Hazards
CAUTIONCAUTION
CAUTIONCAUTION
CAUTION

PAGE 10 — STOW G-4.5R A.C. GENERATOR— OPERATION & PARTS MANUAL — REV. #3 (03/13/06)
STOW G-4.5R — RULES FOR SAFE OPERATION
The following safety guidelines should always be used when
operating the STOW G-4.5R 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.
■ The engine section of this generator requires an adequate
free flow of cooling air.
NEVER operate the generator in
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 DEADLY carbon
monoxide gas.
DANGERDANGER
DANGERDANGER
DANGER
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.
■ NEVER operate this equipment under the influence of
drugs or alcohol .
Read this manual!
■ NEVER touch the hot exhaust
manifold, muffler or cylinder. Allow
these parts to cool before servicing
engine or generator.
■ 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.
■ NEVER operate this equipment when not
feeling well due to fatigue, illness or taking
medicine.
■ 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 smoke around or near the
machine. Fire or explosion could result
from fuel vapors, or if fuel is spilled on a
hot engine.
■ 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 "emergency or safety devices" .
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.