allen MSP455 Application guide

OPERATIONS & PARTS MANUAL
MSP455 RIDING TROWEL
REVISION: 06.2018 | MANUAL PART #: 052793

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This manual, or a copy of it, must be kept with the machine at all times.
There is a manual storage container located on the machine for your convenience.

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Riding Trowel
OPERATIONS - PARTS MANUAL
Page i
This manual covers the products listed below:
Part No. Description
056900 RIDER MSP455
Copyright © 2013 Allen Engineering Corporation
All rights reserved
All information, specications, and illustrations in this manual are subject to change without notice and
are based on the latest information at the time of publication. No part of this manual may be reproduced
or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the
express written permission of Allen Engineering Corporation (AEC). AEC assumes no responsibility or
liability for any errors or inaccuracies that may appear in this manual.
Allen Products are covered under one or more of the following patent numbers:
U.S. Design Patents: 344,736; 400,542; 400,544; 402,998; 402,999; 403,332; 404,041; 404,042;
410,931; 413,127; 416,564; 465,897; 466,909; 474,203.
U.S. Utility Patents: 5,108,220; 5,238,323; 5,328,295; 5,352,063; 5,405,216; 5,476,342; 5,480,257;
5,480,258; 5,533,831; 5,562,361; 5,567,075; 5,613,801; 5,658,089; 5,685,667; 5,803,658; 5,816,739;
5,816,740; 5,890,833; 5,934,823; 5,967,696; 5,988,938; 5,988,939; 6,019,433; 6,019,545; 6,048,130;
6,053,660; 6,089,786; 6,106,193; 6,857,815; 5,288,166; 6,582,153 B1, 7,108,449; 7,114,876;
7,316,523; 7,690,864 B2
Canadian Patents: 2,039,893.
First Issue: March 2013
Amended: July 2015
April 2018, MN 18-010, MW
June, 2018, MN 18-039, MW
AEC Manual Part No.: 052793
Printed in U.S.A.

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LIMITED WARRANTY and LIMITATION OF LIABILITY
Allen Engineering Corporation (“Allen”) warrants its products to be free of defects in material or workmanship for the following
periods:
A. New Machines and Parts............................................................................................One Year
Warranty period begins on first day of use by End User. This first day of use is established by the date of a completed Allen
Warranty Card or a Bill of Sale to the End User. All warranty is based on the following limited warranty terms and conditions,
including the disclaimer of implied warranties and consequential damages.
1. Allen’s obligation and liability under this warranty is limited to repairing or replacing parts if, after Allen’s inspection, there is
determined to be a defect in material or workmanship. Allen reserves the choice to repair or replace.
2. If Allen chooses to replace the part, it will be at no cost to the customer and will be made available to the Allen Distributor,
Dealer, or Rental Center from whom the End User purchased the product.
3. Replacement or repair parts, installed in the product, are warranted only for the remainder of warranty period of the product
as though they were the original parts.
4. Allen does not warranty engines. Engine warranty claims should be made directly to an authorized factory service center
for the particular engine manufacturer.
5. Allen’s warranty does not cover the normal maintenance of products or its components (such as engine tune-ups and oil &
filter changes). The warranty also does not cover normal wear and tear items (such as belts and consumables).
6. Allen’s warranty will be void if it is determined that the defect resulted from operator abuse, failure to perform normal main-
tenance on the product, modification to product, alterations or repairs made to the product without the written approval of
Allen. Allen specifically excludes from warranty any damage to any trowels resulting from an impact to the rotors.
7. Impact damage is not covered under the Allen Gear Box warranty.
8. Allen will pay shop labor on warranty items at the Allen Shop Labor Rate in existence on the date of the warranty claim.
An Allen Labor Chart will determine the time allowed to complete a repair and will govern the shop labor hours that will be
allowed.
9. Allen will pay freight on warranty replacement parts at worldwide standard ground rates. No warranty replacement parts
will be shipped air freight at the expense of Allen. Allen only pays outbound freight charges when sending warranty replace-
ment parts to the customer via ground service. Allen does not pay any inbound freight. However, if Allen determines this to be
a warranted item, only then will Allen reimburse the customer for inbound freight at standard ground rates.
10. ALLEN ENGINEERING CORPORATION’S WARRANTY POLICY WILL NOT COVER THE FOLLOWING: TAXES;
SHOP SUPPLIES; ENVIRONMENTAL SURCHARGES; AIR FREIGHT; TRAVEL TIME; LOSS OF TIME; INCONVENIENCE;
LOSS OF RENTAL REVENUE; RENTAL COSTS OF EQUIPMENT USED TO REPLACE THE PRODUCT BEING REPAIRED;
LOSS OF USE OF THE PRODUCT; COMMERCIAL LOSS; OR ANY OTHER CHARGES WHATSOEVER OR ANY LIABILI-
TIES FOR DIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGE OR DELAY.
11. ALLEN ENGINEERING CORPORATION MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED. THIS LIMITED
WARRANTY IS IN LIEU OF THE WARRANTY OF MERCHANTABILITY AND FITNESS. THERE ARE NO OTHER
WARRANTIES THAT EXTEND BEYOND THE DESCRIPTION ON THIS DOCUMENT.
12. No Allen employee or representative is authorized to change this warranty in any way or grant any other warranty unless
such change is made in writing and signed by an officer of Allen Engineering Corporation.
Page ii
Limited Warranty

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Table of Contents
Title Page
Limited Warranty ii
Table of Contents iii
Information Contained In This Manual v
Dealer Information vi
Ordering Parts vii
Model Number - Serial Number Codes viii
Unit Identification ix
Technical specifications x
Engine Specifications xi
Machine Dimensional Specifications xii
Section 1 - Safety 1-1
State Regulations 1-2
Federal Regulations 1-3
Safety Information 1-4
Safety Symbols 1-5
General Safety 1-6
Safety Labels and Decals 1-11
Transportation Safety 1-15
Section 2 - Operations 2-1
Pre-Operating Instructions 2-2
Starting 2-3
Operating 2-4
Section 3 - Service 3-1
Maintenance Instructions 3-2
Air Filter Maintenance 3-3
Engine Oil Maintenance 3-5
Maintenance Schedule 3-6
Filter Replacement 3-7
Troubleshooting 3-8

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Page iv
Table of Contents - Continued
Title Page
Parts 4-1
Factory Service Information 4-2
Replacement Part Procedure 4-3
Seat Frame Assembly 4-4
Mainframe Assembly 4-12
Throttle Pedal Assembly 4-18
Kill Switch Pedal Assembly 4-20
Pitch Control Assembly 4-22
Right Hand (SOM) Rotor Assembly 4-24
Left Hand (SOM) Rotor Assembly 4-26
Left Gearbox Assembly 4-28
Right Gearbox Assembly 4-30
Right Hand Spider Assembly 4-32
Left Hand Spider Assembly 4-33
Spray System Assembly 4-34
Fuel System Assembly 4-36
Power Unit and Driveline Assembly 4-38
Steering Assembly 4-42
Hydraulics Assembly 4-46
Electrical Schematic 4-50

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Information Contained in this
Manual
This manual provides information and procedures to safely operate and maintain the Allen Machine.
For your own safety and protection from personal injury, carefully read, understand, and observe the
safety instructions described in this manual. Keep this manual or a copy of it with the machine at all
times.
Always operate this machine in accordance with the instructions described in this manual. A well main-
tained piece of equipment will provide many years of trouble free operation.
This manual is divided into the following sections:
SECTION 1
SAFETY
SECTION 3
SERVICE
SECTION 2
OPERATIONS
SECTION 4
PARTS
Complete any warranty requirements as specified by the engine manufacturer in their instructions
found inside the manual box located on the operator’s control panel.
Your engine is not manufactured by Allen Engineering Corporation, Inc, and therefore is not covered
under Allen Engineering Corporation, Inc warranty.
Your engine manufacturer should be contacted if you wish to purchase a parts manual or a repair
manual for your engine.
Refer to enclosed owners engine manual for complete O&M instructions. See your battery manufac-
turer for battery warranty.
Page v

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Dealer Name: _____________________________________________________________
Phone #: (____) - ____ - ____________________________________________________
Address: ________________________________________________________________
City:__________________________________State:________ Zip:___________________
Salesman: _______________________________Mobile Phone _____________________
Additional Comments: ______________________________________________________
________________________________________________________________________
________________________________________________________________________
Your Dealer has Allen Engineering Corporation trained mechanics and original Allen replacement parts.
Always contact the Allen Dealer who sold you this machine for Allen Certified repairs and replacement
parts.
Place Allen Dealer information below for future reference.
Dealer Information
Page vi

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Ordering Parts
Page vii
Section 4.0 contains illustrated parts lists for help in ordering replacement parts for your machine. Fol-
low the instructions below when ordering parts to insure prompt and accurate delivery:
1. All orders for service parts - include the serial number for the machine. Shipment
will be delayed if this information is not available.
2. Include correct description and part number from the “PARTS” section of this
manual.
3. Specify exact shipping instructions, including the preferred routing and complete
destination address.
4. DO NOT return parts to AEC without receiving written authorization from AEC. All
authorized returns must be shipped pre-paid.
5. When placing an order, please contact the AEC dealer nearest you.
All information, specifications, and illustrations in this manual
are subject to change without notice and are based
on the latest information at the time of publication.
VISIT US!!! www.alleneng.com
LIKE US!!! www.facebook.com/AllenEngineering
FOLLOW US!!! @alleneng
WATCH US!!! www.youtube.com/AllenMachinery

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Page viii
Model Number - Serial Number Codes
Manufacturer’s Codes:
When ordering parts or requesting service information, you will always be asked to specify the model
and serial numbers of the machine. The legends below specifically defines each significant character
or group of characters of the Model Number and Serial Number codes.
Model Number
MSP 455
Series
455
Mechanical Super Professional
Serial Number
The serial number found on the identification plate is a ten digit format. The model number identifies
your machine and will ensure that you receive the correct replacement parts.
Serial Number Example
455 02 13 001
Series
455
Month
Year
Sequence Number

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Unit Identification
Unit Identification Plate Location:
An identification plate listing the model number and the serial number is attached to each unit and is
located on the bottom left hand corner of the operator control panel. See image below for serial number
plate number location. This plate should not be removed at any time.
Please record the information found on this plate below so it will be available should the identification
plate become lost or damaged. When ordering parts or requesting service information, you will always
be asked to specify the model and serial numbers of the machine.
FILL IN FOR FUTURE REFERENCE
Model Number:____________________________
Serial Number:____________________________
Date Purchased:___________________________
Purchased From:___________________________
Serial # Plate Location

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Page x
Technical Specifications
MODEL MSP455
Engine Kohler (40 hp) Electric Start Air Cooled Gas
Dimensions (L x W x H) 101.5 in. x 50.5 in. x 58 in. (254 x 128 x 147 cm)
Panning Width 97.5 in. (248 cm)
Rotors (Diameter) 46 in. (1,168 mm) - Five Bladed Spider
Maximum Rotor Speed 165 RPM (Variable Speed)
Weight 1,175 lbs. (533 kg)
Steering Power
Fuel/Retardant Capacity 6 gal. (22.7 L)
The MSP455 is our newest power steering model in our popular MSP Series. The powerful gas engine,
Super Heavy-Duty Gearboxes and Spiders provide a great weight-to-horsepower performer for larger
contractors.
• Adjustable Seat and Arm Rests
• Light Switch, 12 Volt Charger, and Hour Meter in One Convenient Location
• Generation III Hydraulic Joy Stick Power Steering
• Independent Manual Pitch Control
• Detachable Front Access Panels
• Comfort Positioned Pedals
• Raised Operator Platform
• Powered Retardant Spray System
• Variable Speed Torque Converter
• Five-Bladed Spider with Super Heavy-Duty (SHD) Gearbox
• Four Lights

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Engine Specifications
40 HP Kohler
MODEL CH1000
Weight 149.0 lbs
Engine Displacement (cc) 999
Start Type Electric
Engine Type Command Pro V-Twin OHV
Rated Power (HP) @ 3600 RPM 40
Torque (ft./lbs.) 61.5
Displacement (cu. in.) 61
Shaft Output Horizontal
Shaft Diameter (in.) 1 1/8
Shaft Length (in.) 4
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16–20
Compression Ratio 8.8:1
Cooling System Air cooled
Air Cleaner Type Heavy Duty
Fuel Type Gasoline
Fuel Filter In line
Oil Capacity (qt.) 2.9
Lubrication System Full pressure
Ignition System Electronic
Carburetor 2 Barrel Carb
Max. RPM 3,600
Charging System Amps 25
Muffler Included Yes
EPA/CARB Approval (California Air Resource Board) Yes

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Page xii
Dimensional Specifications
101-1/2” 50-1/2”
60-1/2”

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CE Documentation
Page xiii

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INTENTIONALLY BLANK
Page xiv

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SECTION 1
SAFETY
Page 1-1
Section 1
SAFETY

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SECTION 1
SAFETY
Page 1-2
State Regulations
Proposition 65 Warning

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SECTION 1
SAFETY
Page 1-3
Federal Regulations
Respiratory Hazards

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SECTION 1
SAFETY
Page 1-4
Safety Information
Do not operate or service the equipment before reading the entire manual. Safety precautions should
be followed at all times when operating this equipment. Failure to read and understand the safety mes-
sages and operating instructions could result in injury to yourself and others.
SAFETY NOTES
The four safety notes shown below will inform you about potential hazards that could injure you or oth-
ers. The safety notes specifically address the level of exposure to the operator and are preceded by
one of four words: DANGER, WARNING, CAUTION or NOTICE.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.