allen MSP450A Application guide

OPERATIONS-PARTS
MANUAL
061090 - 12/2013
Riding Trowel
ALSO INCLUDES 450C
05/2016

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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
060800 RIDER MSP450
065150 RIDER MSP450C
Copyright © 2013 Allen Engineering Corporation
All rights reserved
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. 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.
NOTE: This machine (MSP450) is classified as “Patent Pending”.
First Issue: December 2013 (Amended October 2014: Gen 2)
(Amended May 2016: Gen 3 - 450C)
AEC Manual Part No.: 061090
Printed in U.S.A.

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Page ii
Limited Warranty
Allen Engineering Corporation (“Allen”) warrants its products to be free of defects in material or workmanship for:
TWO YEARS FROM END USER’S DATE OF PURCHASE
Warranty period begins on the date of purchase by the End User of the product. 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 or batteries. Engine warranty claims should be made directly to an authorized factory
service center for the particular engine manufacturer. Batteries are not warranted due to unknown treatment during transport,
etc, and any battery claims should be directed to the battery manufacturer.
5. Allen’s warranty does not cover the normal maintenance of products or its components (such as engine tuneups 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 to gear boxes is not covered under the Allen warranty and is deemed customer abuse.
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 replacement
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 WARRAN-
TIES 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.

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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
Right Rotor Assembly 4-8
Left Rotor Assembly 4-10
Right Spider Assembly 4-12
Left Spider Assembly 4-13
Right Gearbox Assembly 4-14
Left Gearbox Assembly 4-16
Pitch Control Assembly 4-18
Kill Switch Pedal Assembly 4-20
Throttle Pedal Assembly 4-22
Steering Assembly 4-24
Spray System Assembly 4-28
Mainframe Assembly 4-30
Fuel System Assembly 4-32
Power Drive Assembly 4-34
Engine Mounting Assembly 4-40
450C Engine Assembly 4-44
Electrical Schematic 4-48
Front Dolly Jack Assembly 4-50
Rear Dolly Jack Assembly 4-52
Trowel Arm Alignment Jig Assembly 4-54
Accessories 4-56

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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 450
Series
450
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
450 02 13 001
Series
450
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 Kubota (44 hp) Turbo Diesel
Dimensions (L x W x H) 101.5 in. x 50.5 in. x 59 3/8 in. (254 x 128 x 151 cm)
Panning Width 97.5 in. (248 cm)
Rotors (Diameter) 46 in. (1,168 mm) - Five Bladed Spider
Maximum Rotor Speed 180 RPM (Variable Speed)
Weight 1,491 lbs. (676 kg)
Steering Manual
Fuel/Retardant Capacity 6 gal. (22.7 L)
The MSP450 is our newest model in our popular MSP Series. The powerful diesel engine, Super
Heavy-Duty Gearboxes and Spiders provide a great weight-to-horsepower performer for larger con-
tractors. The newly designed Allen power transmission system (patent pending) is incorporated into this
machine to provide exceptional performance from the engine to the concrete surface.
• Adjustable Seat and Arm Rests
• Light Switch, 12 Volt Charger, and Hour Meter in One Convenient Location
• Ergonomic Manual 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) Gearboxes
• Six Lights
• Versa Steering Linkage

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Engine Specifications
44 HP Kubota
Model V1505-T-E4B
Emission Regulation Tier 4 / Stage IIIA
Type Vertical 4-cycle liquid cooled Diesel
Number of Cylinders 4
Bore mm (in) 78.0 (3.07)
Stroke mm (in) 78.4 (3.09)
Displacement L (cu.in) 1.498 (91.41)
Combustion System IDI
Intake System Turbocharged
Maximum Speed rpm 3000
Output: Gross Intermittent kW 33
hp 44.3
Direction of Rotation Counterclockwise Viewed on Flywheel
Oil Pan Capacity L (gal) 6.7 (1.77)
Starter Capacity V-kW 12-1.2[US]/12-1.4[EU]
Alternator Capacity V-A Dec-40
Length mm (in) 591.3 (23.28)
Width mm (in) 433.0 (17.05)
Height mm (in) 621.0 (24.45)
Dry Weight kg (lb) 114.0 (251.3)

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Page xii
Dimensional Specifications

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CE Documentation
Page xiii
The Technical Construction file is maintained at: Allen Engineering Corporation
819 South 5th St.
Paragould, AR 72450
Telephone: [phone]
Facsimile: 800-643-0097
The authorized representative is: ab lin-pro
Mr. Thomas Voeler
Femvägsskälet 3
421 50 Västra Frölunda
Sweden
Tel: [phone]
Mobile: [phone]
Fax: [phone]
Email: [email protected]

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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.