allen MP235 Application guide

OPERATIONS & PARTS MANUAL
MP235 RIDING TROWEL
REVISION: 05.2018| MANUAL PART #: 053383

053383; 11/10
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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053383; 11/10
Riding Trowel
OPERATIONS-PARTS MANUAL
Copyright © 2016 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, electronics 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.
With other Patents Pending.
First Issue: December 2010
Amended: September 2016
August 2017
May 2018, MN 18-035, M. Wesley
May 2018, MN 18-040, M. Wesley
AEC Manual Part No.: 053383
Printed in U.S.A.
This manual covers the Riding Trowels listed below:
Part No. Description
053176 RIDER, MP235

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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 follow-
ing 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 consum-
ables).
6. Allen’s warranty will be void if it is determined that the defect resulted from operator abuse, failure to perform nor-
mal maintenance on the product, modification to product, alterations or repairs made to the product without the writ-
ten 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 war-
ranty 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
LIABILITIES 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.

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Table of Contents
Sect No. Title Page
... Limited Warranty ............................................ii
... 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 ........................................xvi
... Machine Dimensional Specifications ............................xiii
... Sound And Vibration Specifications .............................xiv
1.0 Safety................................................... 1-1
... State Regulations .......................................... 1-2
... Federal Regulations ........................................ 1-3
1.1 General Safety Precautions .................................. 1-4
1.2 Spark Arrestor Notice....................................... 1-5
1.3 Operating Safety .......................................... 1-6
1.4 Engine Safety ............................................. 1-8
1.5 Servicing Safety ........................................... 1-9
1.6 Safety And Operation Labels ................................ 1-10
1.7 Pan Installation Insructions ................................. 1-??
2.0 Operations............................................... 2-1
2.1 Introduction............................................... 2-3
2.2 Start Up Procedures........................................ 2-4
2.3 Operating Instructions ...................................... 2-6
3.0 Service.................................................. 3-1
3.1 Periodic Maintenance....................................... 3-2
3.2 Trowel Gearbox ........................................... 3-3
3.3 Drive Belt ................................................ 3-4
3.4 Control Lever Adjustment.................................... 3-8
3.5 Right Hand Control Lever Adjust ............................. 3-10
3.6 Lift Lever Adjustment ...................................... 3-12
3.7 Transporting Trowel ....................................... 3-14
3.8 Battery Jump Start ........................................ 3-18

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4.0 Parts.................................................... 4-1
... Factory Service Information .................................. 4-2
... Replacement Part Procedure................................. 4-3
4.1 Seat Frame Assembly ...................................... 4-4
4.2 Mainframe Assembly ....................................... 4-6
4.3 Steering Assembly ......................................... 4-8
4.4 Spray System ............................................ 4-10
4.5 Pitch Control Assembly .................................... 4-12
4.6 Engine System Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.7 Driveline Assembly........................................ 4-16
4.8 Electrical Schematic ....................................... 4-18
4.9 Right Rotor Assembly (SOM)................................ 4-20
4.10 Left Rotor Assembly (SOM) ................................. 4-22
4.11 Right Spider Assembly..................................... 4-24
4.12 Left Spider Assembly ...................................... 4-26
4.13 Right Gearbox Assembly (SOM) ............................. 4-28
4.14 Left Gearbox Assembly (SOM) .............................. 4-30
4.15 Dolly Jack Assembly ...................................... 4-32
4.16 Pans and Lifting Bridle ..................................... 4-34
4.17 Tools................................................... 4-36
4.18 Gearbox Seal Kit ......................................... 4-38
Table of Contents, continued

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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
maintained 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
Complete any warranty requirements as specified by the engine manufacturer in their instructions
found inside the manual box located on the back of the riding trowel operator’s seat.
Your engine and clutch 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 man-
ufacturer for battery warranty.
SECTION 4
PARTS

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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
Dealer Name: ______________________________________________________________
Phone #: (____) - ____ - ______________________________________________________
Address: _________________________________________________________________
City: ____________________________________ State:________ Zip:_____________
Salesman: _______________________________ Mobile Phone __________________
Additional Comments: _____________________________________________________
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________

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Section 4.0 contains illustrated parts lists for help in ordering replacement parts for your machine.
Follow 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.
Ordering Parts

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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.
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.
235 06 08 010
Production Sequence
Model Number
MP 235
MODEL
Year Mfd
Month Mfd
Series/Model
SERIES

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Unit Identification
Model Number: ________________________
Serial Number: ________________________
Date Purchased: ______________________
Purchased From: ______________________
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 rear lower left side of mainframe. Refer to Figure 1 for serial number and
model 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
Figure 1
Serial Number Location
SERIAL NUMBER
MODEL SERIES

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Technical Specifications
Measurements in this manual are in U.S. units and their customary metric units (i.e., metric units
contained within brackets [8 mm]). The machine RIGHT-HAND and LEFT-HAND sides are deter-
mined by sitting on machine (SOM) facing in the direction the machine will travel when going
forward.
Machine Features:
•Dimensions (L x W x H) inch [mm] ..................86x38x53
(guard rings/top of seat)...........................[2184x965x1346]
• Operating Weight lb [kg]
Honda ......................................
• Panning Path Width inch [mm] .....................85 [2159]
• Two Rotors (Diameter) inch [mm] ...................36 [914]
• Rotor Speed (RPM) ..............................110 - 135
• Finish Blade (8) inch [mm].........................6 x 14 [152.4x355.6]
• Gearbox (2) ....................................Standard Duty (STD)
• Rotating Guard Rings ............................Standard
• Fixed Seat Frame ...............................Standard
• Powered Retardant Spray System ..................Standard
• Spray System Capacity gal [L]. . . . . . . . . . . . . . . . . . . . . .6 [23]
• Steering System.................................Dual Levers
• Gearbox Rotation................................Standard
• Battery ........................................12 Volt
• Safety Shutdown Switch ..........................Seat Controlled
• Fuel Capacity gal [L] .............................6 [23]
• Run Time (Approximate) hr ........................2.5

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Technical Specifications, continued
• Transmission Type...............................Torque Converter Clutch
• Drive Belt Type .................................Kevlar Cogged Vee
• Hour Meter Type ................................Digital Read-out

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Engine Specifications
Honda Engine Information
• Model ................................................. GX-690 UTDW
• Rated Power hp [kW] @ 3,600 RPM ......................... 22.3 [16.6]
• Displacement in³ [cm³] .................................... 42 [688]
• Dimensions (L x W x H) inch [mm]........................... 15.9x16.1x17.2 [405x410x438]
• Fuel (Type) ............................................. Regular unleaded gasoline
• Weight (Dry) lb [kg]....................................... 98 [44.4]

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Machine Dimensional Specifications
All information, specifications, and illustrations on this page in this manual are subject to
change without notice and are based on the latest information at the time of publication.
38 [965 mm]
WIDTH
53 [1346 mm]
HEIGHT
77.5 [1969 mm]
LENGTH

xiv 053383; 11/10
Sound And Vibration Data
Sound Pressure Level Information:
Sound pressure is “A” weighted . Measured at the operators ear position while the ride-on trowel
is operating at full throttle on concrete in a manner most often experienced in “normal ” circum-
stances. Sound pressure may vary depending upon the condition of the concrete. Hearing
protection is always recommended.
Vibration Level Information:
The vibration level indicated is the maximum RMS (Root Mean Square) velocity value obtained
at the handle grip while operating the ride-on trowel on curing concrete in a manner most often
experienced in “normal ” circumstances. Values were obtained from all three axes of motion. The
values shown represent the maximum RMS value from these measurements.
Summary Data Of Sound And Vibration Testing for CE Marking
Test
Machine
Engine
Type
Distant
Sound
Press
Operator
Ear SPL
Sound
Power Level
Seat
Vibration
Overall
Foot
Vibration
Overall
Hand
Vibration
Maximum
MP235 Honda dB (A)
55
dB (A)
86.9
dB (A)
86.8
m/sec²
2.76
m/sec²
5.73
m/sec²
3.00
This information was acquired from sound and vibration analysis tests conducted at
Allen Engineering Corporation test facilities.

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EC Declaration of Conformity
EC Declaration of Conformity
with the
European Machinery Directive 2006/42/EC
We hereby declare that the machinery stipulated below complies with all the relevant provisions of the
EC Machinery Directive and the UK National Laws and Regulations adopting this Directive.
Modifications to the machine without prior approval from the undersigned will render this declaration
null and void.
Manufacturer: Allen Engineering Corporation
819 South 5th St., Paragould, AR 72450 USA
Authorised Representative in EU: Mr. Thomas Voeler, ab lin-pro
Femvägsskälet 3, 421 50 Västra Frölunda. Sweden
Equipment: MP235 Riding Trowel
Description: Ride-on, IC engine powered, concrete smoothing machine.
Notified Body: Not required.
Harmonized Standards Applied: EN12649
Person empowered to draw up the declaration: Jay Allen Signature:
Position: President
Place of issue: 819 South 5th St., Paragould, AR 72450 USA
Date: 1/24/2011

xvi 053383; 11/10

1-1
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SECTION 1
SAFETY
Section 1
SAFETY

1-2
SECTION 1
SAFETY
053383; 11/10
CALIFORNIA PROPOSITION 65
WARNING
Gasoline engine exhaust from this product contains chemicals
known to the State of California to cause cancer, birth defects and
other reproductive harm.
State Regulations