Stow MS-70 User Manual

OPERATION AND PARTS MANUAL

MODEL MS-70

PLASTER AND MORTAR MIXER

(GASOLINE ENGINE/ELECTRIC MOTOR)

Revision #3 (03/26/10)

THIS MANUAL MUST ACCOMPANY

THE EQUIPMENT AT ALL TIMES.

Engine exhaust and some of its constituents, and some dust created by power sanding, sawing, grinding, drillingandotherconstructionactivities contains chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. Some examples of these chemicals are:

Leadfromlead-basedpaints. Crystallinesilicafrombricks. Cementandothermasonryproducts. Arsenicandchromiumfrom chemically treatedlumber.

Your risk from these exposures varies, dependingonhowoftenyoudothistype of work. To reduce your exposure to these chemicals: work in aALWAYS well ventilated area, and work with

approved safety equipment, such as

dust masks that are specially designed to filter out microscopic particles.

PAGE 2 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

HERE'S HOW TO GET HELP

PLEASE HAVE THE MODEL AND SERIAL

NUMBER

Post Office Box 6254 888-252-STOW Carson, Ca 90749

800-427-1244 FAX: 800-672-7877 310-537-3700 FAX: 310-637-3284

800-421-1244 FAX: 310-537-4259 310-537-3700

800-478-1244 FAX: 310-631-5032

800-421-1244, EXT. 279 FAX: 310-537-1173 310-537-3700, EXT. 279

310-661-4242 FAX: 310-604-9237 877-289-7869 (877-BUY-STOW)

ON-HAND

FAX:

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

MS-70 Plaster/Mortar Mixer.

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 MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 3

STOW MS-70 PLASTER/MORTAR MIXER — TABLE OF CONTENTS

STOW MS-70 — Plaster/Mortar Mixer

HONDA GX240K1HA2 ENGINE

Terms and Conditions of Sale — Parts .................. 92

Component Drawings

PAGE 4 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

NOTE

STOW MS-70 MIXER — 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 c k

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 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

FAX:

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 MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — 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 MS-70 PLASTER/MORTAR MIXER — SPECIFICATIONS

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In accordance with our established policy of constant improvement, we reserve the right to amend these specifications at any time without notice.

PAGE 6 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

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STOW MS-70 PLASTER/MORTAR MIXER — DIMENSIONS

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Figure 1. Dimensions

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 7

STOW MS-70 MIXER — 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 mixer, 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 MS-70

mortar

and

plaster

mixer. Refer to the engine manufacturers instructions for data relative to its safe operation.

HAZARD SYMBOLS

Gasoline

WARNINGWARNING

WARNING

WARNINGWARNING

WARNING

WARNINGWARNING

DO NOT

Lethal Exhaust Gas Hazards

NEVER

Explosive Fuel Hazards

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

SERIOUSLY INJURED

DO NOT

WARNINGWARNING

WARNING

WARNINGWARNING

WARNING

WARNINGWARNING

ALWAYS

Burn Hazards

DO NOT

Respiratory Hazards

PAGE 8 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 MIXER — SAFETY MESSAGE ALERT SYMBOLS

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

NEVER

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

ALWAYS

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

OFF

Rotating Parts Hazards

Accidental Starting Hazards

ON/OFF

Eye and Hearing Hazards

ALWAYS

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

Equipment Damage

Hazards

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 9

STOW MS-70 PLASTER/MORTAR MIXER — RULES FOR SAFE OPERATION

■

NEVER

■

High Temperatures

■

DANGERDANGER

DANGER

DANGERDANGER

GENERAL SAFETY

■

DO NOT

■

NEVER

Read this manual!

■

NEVER

■

NEVER

■

ALWAYS

■

NEVER

■

ALWAYS

■

ALWAYS flammable stop the

DO NOT

■

NEVER

■

WARNINGWARNING

WARNING

WARNINGWARNING

Starting the Mixer Engine

■

NEVER

PAGE 10 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 PLASTER/MORTAR MIXER — RULES FOR SAFE OPERATION

■

ALWAYS

■

NEVER

■

ALWAYS

■

ALWAYS

■

ALWAYS

■

ALWAYS

■

DO NOT

■

CAUTION

■

TRANSPORTING

■

ALWAYS

■

MAINTENANCE

■

NEVER

■

ALWAYS

■

DO NOT

■

NEVER

■

WARNINGWARNING

WARNING

WARNINGWARNING

Stand Clear of the

Mixer when in use

EMERGENCIES

■

ALWAYS

first aid kit.

■

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 11

STOW MS-70 PLASTER/MORTAR MIXER — TOWING GUIDELINES

Towing Safety Precautions

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

■

ALWAYS NEVER

■

CHECK

Regularly Inspect

Towing Components

■

ALWAYS OFF

■

Tow Bar to Vehicle Connection (Coupler Only)

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

Towing Components

torque wrench

Replacing

■

ALWAYS Safety Chain

■

ALWAYS

■

ALWAYS

■

10 15 MPH

■

chocked blocks

NEVER

Mixer Tow Bar Vehicle Connection (Pintle and Loop)

PAGE 12 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 PLASTER/MORTAR MIXER — SAFETY CHAIN CONNECTION

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

NEVER!

Tow Bar to Mixer Connection

Always Tow with

a Safety Chain

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

DO NOT

Drum Saftey

when Towing

right

Figure 2. Tow Bar and Safety Chain Installation

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 13

Figure 3. Drum Latch Pin

(Tow or Locked Position)

MS-70 PLASTER/MORTAR MIXER — OPERATION AND SAFETY DECALS

Machine Safety Decals

The STOW MS-70 mortar and plaster mixer is equipped with a number of safety decals. These decals are provided for operator safety and maintenance information. Figure 4 below illustrates these decals as they appear on the machine. Should any of these decals become unreadable, replacements can be obtained from your dealer.

Figure 4. Mixer Operation and Safety Decals

PAGE 14 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 PLASTER/MORTAR MIXER — GENERAL INFORMATION

Application

The STOW MS-70 series mixers (drum capacity of 7.0 cu. ft./198 liters) are shipped completely assembled and have been factory tested and are ready for use.

This mixer is

Hardware

Power Plants

STOW

gasoline engine or

a 1.5 HP electric motor. Refer to Table 2 for specific engine or electric motor data information.

Electrical

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Engine Maintenance

Extension Cables

. Choose an extension cord of adequate current carrying capacity as referenced in Table 6. Remember

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STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 15

STOW MS-70 PLASTER/MORTAR MIXER — BASIC MIXER COMPONENTS

8. Mixing Paddles — Used in the mixing of material. This unit uses four different types of paddles to provide a fast uniform mix.

9. Bag Cutter— This feature allows compound mixing bags to be opened easily, therefore allowing the contents of the bag to fall directly into the mixing drum.

10. Safety Grill — Provided for operator safety. This safety grill is designed to keep hands and solid objects out of the mixing drum when in use. This grill should be closed at all times when mixer is in use. DO NOT remove the grill or grill opening bar. Keep the grill clean by washing it down daily.

11. Dump Handle — Pull this handle downward to dump the contents of the drum. Push the handle upward to return the drum to its vertical position.

12. Safety Grill Lock Handle — To prevent injury to hands

Figure 5. Mixer Components

1. Tires Ply — The tire ply (layers) number is rated in letters; This mixer uses 13-inch 4-ply tires.

2. Engine Cover — Lift this cover to gain access to the engine compartment.

3. Belt Slip Lever — When starting this lever should be move upward and to the left. For mixing place the lever in the down position. See attached decal located adjacent to lever.

4. ON/OFF Switch (electric) — This switch is provided on mixers with electric motors. To gain access to this switch, lift the engine cover. When activated it will shut down the electric motor.

5. ON/OFF Switch (gasoline) — This switch is provided on

mixers with gasoline

side of the engine cover. When activated it will shut down the engine.

6. Latch — Use this latch to secure the engine compartment cabinet.

engines only and is located on the

and arms, the safety grill should ALWAYS be locked when the mixing of plaster or mortar is required. Also when transporting the mixer the safety grill should be locked. The safety grill should only be un-locked when cleaning of the blades and drum is required.

13. Pivot Point/Zerk Fitting — There is, on each end of the mixing drum a zerk grease fitting. These fittings lubricate the dumping mechanism. Lubricate both fittings at least twice a week.

14. Dump Handle Release Pin — Pull this pin outward (spring loaded) to release the drum, then pull down on the dump handle to place the drum in the dump position. When drum is in dump position, pin will automatically lock drum.

15. Steel Mixing Drum — Mixing materials such as mortar, plaster are to be placed into this drum for mixing. Always clean the drum after each use.

16. Tow Bar/Coupler — This mixer uses a 2-inch coupler or pintle towbar.

17. Safety Chain — This mixer uses a 3/16-inch thick, 72- inches long zinc-plated saftey chain. the safety chain when towing.

18. Forklift Pockets –

ALWAYS

connect

7. Drum Bearing — There is on each end of the mixing drum, a sealed bearing. Bearings are packed and sealed at the factory and require no further maintenance.

19. Chock Blocks — Place these blocks (not included as

PAGE 16 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

part of the mixer package) under each mixer wheel to prevent rolling.

STOW MS-70 PLASTER/MORTAR MIXER — BASIC ENGINE COMPONENTS

Figure 6. Engine Controls and Components

INITIAL SERVICING

The engine (Figure 6) must be checked for proper lubrication and filled with fuel prior to operation. Refer to the manufacturers Engine manual for instructions & details of operation and servicing.

1. Fuel Filler Cap – Remove this cap to add unleaded gasoline to the fuel tank. Make sure cap is tightened securely. DO NOT over fill.

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.

2. Throttle Lever – Used to adjust engine RPM speed (lever advanced forward

FAST

3. Engine ON/OFF Switch – ON position permits engine starting, OFF position stops engine operations.

4. Recoil Starter (pull rope) – Manual-starting method. Pull the starter grip until resistance is felt, then pull briskly and smoothly.

SLOW

Explosive

Fuel Hazard

, lever back toward operator

5. Fuel Valve Lever – OPEN to let fuel flow, CLOSE to stop the flow of fuel.

6. Choke Lever – Used in the starting of a cold engine, or in cold weather conditions. The choke enriches the fuel mixture.

7. 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.

NOTE

Engine components can generate extreme heat. To prevent burns, DO NOT touch these areas while the engine is running or immediately after operating. NEVER operate the engine with the muffler removed.

8. Spark Plug – Provides spark to the ignition system. Set spark plug gap to 0.6 - 0.7 mm (0.028 - 0.031 inch) Clean spark plug once a week.

9. Muffler – Used to reduce noise and emissions.

10. Fuel Tank – Holds unleaded gasoline. For additional information refer to engine owner's manual.

WARNINGWARNING

WARNING

WARNINGWARNING

Operating the engine without an air filter, with a damaged air filter, or a filter in need of replacement will allow dirt to enter the engine, causing rapid engine wear.

Burn Hazard

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 17

STOW MS-70 PLASTER/MORTAR MIXER — ELECTRIC MOTOR

Electric Motor

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

DO NOT DO NOT

Electric Motor Connection

Electric Motor

Safety

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CAUTIONCAUTION

It is strongly recommended that all

NOTE

Special attention should be given to the electric switch as well as the over-and-under voltage protection devices as per regulations set forth in the local electrical safety code handbook

electrical wiring be done by a

electrician

Connections

Figure 7. Single Phase Electric Motor With

licensed

CAUTIONCAUTION

Electric Motor

CAUTION

12-inch Pigtail

PAGE 18 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 PLASTER/MORTAR MIXER — ELECTRIC MOTOR

The motor supplied is wired for 115 VAC grounded operation. Make certain that the correct size grounded (3-wires) extension cord is used. See Table 6.

Motors can burn out when the line voltage falls 10% below the voltage rating of the motor. Failure to use proper voltage will

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cause the motor to overheat and actuate the overload switch. If overload protection should actuate because of improper voltage

or any other malfunction, turn the main switch on the motor to the "OFF" position and correct the problem, press the reset switch button, and turn the main switch to the "ON" position.

Electric Motor Voltage Switch

ALWAYS

make certain the motor switch is "OFF" and the

power cord has been disconnected from the power source.

2. Remove the voltage lock-out bolt position of the

voltage change toggle switch

(Figure 7). Change the

from 115 VAC to 230 VAC. The mixer is factory wired for 115 VAC operation.

3. Replace the voltage lock-out bolt.

Important!,

from 115 to 230 VAC, the

when changing the input voltage to the motor

plug

on the motor power cord

must also be changed. See Table 5.

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STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 19

STOW MS-70 — PADDLE BLADE ADJUSTMENT (STEEL DRUM)

Adjust paddles as shown in Figure 8.

Figure 8. Paddle Blade Adjustment, Steel Drum

PAGE 20 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 PLASTER/MORTAR MIXER — INSPECTION

Before Starting

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

ALWAYS

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

NEVER

ALWAYS

3. Insert and remove the dipstick without screwing it into the filler neck. Check the oil level shown on the dipstick.

4. If the oil level is low (Figure 10), fill to the edge of the oil filler hole with the recommended oil type (Table 7). Maximum oil capacity is 2.33 qts. (1.09 liters)

NOTE

Eyesight and Hearing

Protection

Inspection &

Maintenance Saftey

Figure 10. Engine Oil Dipstick (Oil Level)

Engine Oil Check

Figure 9. Engine Oil Dipstick (Removal)

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STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 21

STOW MS-70 PLASTER/MORTAR MIXER — INSPECTION

Fuel Check

DANGERDANGER

DANGER

DANGERDANGER

DO NOT

1. Remove the gasoline cap located on top of fuel tank.

2. Visually inspect to see if fuel level is low. If fuel is low, replenish with unleaded fuel.

3. When refueling, be sure to use a strainer for filtration. DO NOT top-off fuel. Wipe up any spilled fuel.

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

NEVER!

provided for operator safety. Injury may result if it is disable, disconnected or improperly maintained.

disable or disconnect the start/stop switch. It is

Explosive Fuel

Hazard

Start/Stop Switch

V-belt Check

Blade Check

Controls Start/Stop Switches

Grease Fittings (Dumping Mechanism)

PAGE 22 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 PLASTER/MORTAR MIXER — START-UP PROCEDURES

This section is intended to assist the operator with the initial start-up of the STOW MS-70H (gasoline engine) or STOW MS-70E (electric motor) mixer. It is extremely important that this section be read carefully before attempting to use the mixer in the field.

DO NOT use your mixer until this section is thoroughly understood.

WARNINGWARNING

WARNING

WARNINGWARNING

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

NEVER

General Safety

Respiratory Hazard

2. To start a cold engine, move the choke lever (Figure 12) to the CLOSED position.

3. Move the throttle lever (Figure 13) away from the slow position, about 1/3 of the way toward the fast position.

Figure 12. Choke Lever

Starting (gasoline only)

The following steps outline the procedure for starting the engine. Depending on the type of engine employed in the mixer the steps may vary slightly. If your mixer has an electric motor disregard this section.

1. Move the fuel shut-off lever (Figure 11) to the ON position.

Figure 11. Fuel Shut-OFF Lever

Figure 13. Throttle Lever

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 23

MS-70 PLASTER/MORTAR MIXER —

START-UP PROCEDURES

4. Turn the engine switch (Figure 14) to the ON position.

Figure 14. Engine ON/OFF Switch

5. The main (Figure 15) is used to start and stop the engine. Pull this switch outward to start the engine.

start/stop

switch located on the engine cover is

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

Make certain the to the RIGHT (when viewing the mixer from the towpole end) of the drum stop block which is welded to the front side of the drum. Also make sure lock pin is fully engaged (locked). This will prevent the drum from tipping.

drum lock pin

Figure 17. Drum Lock Pin (Side-View)

Preventing Drum Tipping

(Figures 17 and 18) is placed

Figure 15. Start/Stop Switch (gasoline engine)

6. Place the (disengaged) position.

belt slip lever

Figure 16. Belt Slip Lever

(Start/Stop Position)

PAGE 24 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

(Figure 16) in the

START/STOP

Figure 18. Drum Lock Pin (Right Position)

7. Pull the resistance, then pull briskly. Return the starter grip gently.

starter grip

Figure 19. Starter Grip

(Figure 19) lightly until you feel

STOW MS-70 PLASTER/MORTAR MIXER — OPERATION/SHUT-DOWN

mix

8. Place the belt slip lever (Figure 20) in the This will tilt the engine placing tension on the V-belts enabling the shaft to rotate.

Figure 20. Belt Slip Lever (Mix Position)

Starting (electric only)

1. Using an adequate size extension cord (see Table 5), connect one end of the extension cord to the plug on the electric motor, connect the other end to the power source. Make sure the motor is configured for the proper operating voltage.

2. Set the electric motor's ON/OFF switch (Figure 7) to the

ON position.

Mixing Dumping

1. The paddle shaft inside the drum should be rotating at this time.

2. Add a small amount water to the mixing drum.

3. Lift the mixing bag compound onto the steel safety grate over the bag cutter and let the contents fall into the drum. Add more water if desired and mix compound to desired consistency.

4. When charging, mixing, or dumping a batch of plaster or mortar the (when viewing the mixer from the towpole end) of the drum stop block which is welded to the front side of the drum. See Figure 21.

This will allow the operator to use both hands on the drum handle during dumping. Please note that when the lock pin is placed to the left, the drum will be maintained in the vertical position as the paddles rotate. To discharge the material the operator should hold the dump handle with

both hands

amount of material.

drum lock pin

and rotate the drum to discharge the desired

should be placed to the

position.

left

Be sure to stand clear of the when the mixer is operational. Any binding of material between the mixer blades and the drum will cause the drum handle to move to the discharge position and could cause bodily harm.

STOPPING THE MIXER (gasoline engine)

1. Place the

20).

2. Push the main the engine.

Tu r n t he fuel shut-off valve to the OFF position.

4. Disconnect the spark plug.

5. Clean mixer as referenced in the maintance section of this manual.

STOPPING THE MIXER (electric motor)

1. Place the electric motor's OFF position.

2. Disconnect the electric motor's extension cord from its power source.

3. Clean mixer as referenced in the maintance section of this manual.

WARNINGWARNING

WARNING

WARNINGWARNING

Figure 22. Stand Clear of Dump Handle

belt slip lever

start/stop

Dump Handle Safety

dump handle

in the

start/stop

switch (Figure 15) inward to stop

ON/OFF

switch (Figure 4) in the

(Figure 22)

position (Figure

Figure 21. Drum Lock Pin (Left Position)

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 25

STOW MS-70 PLASTER/MORTAR MIXER — MAINTENANCE (ENGINE)

Use Table 8 as a general maintenance guideline when servicing your engine. For more detail engine maintenance information, refer to the engine owner's manual supplied with your engine.

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PAGE 26 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

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STOW MS-70 PLASTER/MORTAR MIXER — MAINTENANCE (ENGINE)

Maintenance

Perform the scheduled maintenance procedures as defined by Table 8 and below:

DAILY

■

Thoroughly remove dirt and oil from the engine and control area. Clean or replace the air cleaner elements as necessary. Check and retighten all fasteners as necessary. Check the gearbox for oil leaks. Repair or replace as needed.

WEEKLY

■

Remove the fuel filter cap and clean the inside of the fuel tank.

■

Remove or clean the filter at the bottom of the tank.

■

Remove and clean the spark plug (Figure 23), then adjust the spark gap to 0.024 ~0.028 inch (0.6~0.7 mm). This unit has electronic ignition, which requires no adjustments.

ENGINE AIR CLEANER

1. Remove the air cleaner cover and foam filter element as

2. Tap the paper filter element (Figure 25) several times on a

3. Clean foam element in warm, soapy water or nonflammable

shown in Figure 25.

hard surface to remove dirt, or blow compressed air [not exceeding 30 psi (207 kPa, 2.1 kgf/cm element from the air cleaner case side. Brushing will force dirt into the fibers. Replace the paper filter element if it is excessively dirty.

solvent. Rinse and dry thoroughly. Dip the element in clean engine oil and completely squeeze out the excess oil from the element before installing.

DANGERDANGER

DANGER

DANGERDANGER

Explosive

)] through the filter

NEVER

brush off dirt.

Hazard

DO NOT use gasoline as a cleaning

solvent, because that would create a risk of fire or explosion.

Figure 23. Spark Plug Gap

ENGINE OIL

warm

1. Drain the engine oil when the oil is Figure 24.

2. Remove the oil drain bolt and sealing washer and allow the oil to drain into a suitable container.

3. Replace engine oil with recommended type oil as listed in Table 7. For engine oil capacity, see Table 2 (engine specifications). DO NOT overfill.

4. Install drain bolt with sealing washer and tighten securely.

as shown in

Figure 25. Engine Air Cleaner

Figure 24. Engine Oil (Draining)

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 27

STOW MS-70 PLASTER/MORTAR MIXER — MAINTENANCE (MIXER)

Ball Socket and Clamp Face Maintenance

1. If the towing vechicle is equipped with a ball socket, smear socket periodically with multi-purpose grease. the ball socket well lubricated.

2. Periodically oil coupler with SAE 30 WT. motor oil.

3. When parking or storing your mixer. Keep the coupler off the ground so dirt will not build up in the ball socket.

Drum Head Seals

pivot points

and

clamp face

This will keep

surfaces of

Failure

periodically will cause the dumping mechanism to stiffen, making the mixing drum hard to dump.

Countershaft Bearing Lubrication

CAUTIONCAUTION

CAUTION

CAUTIONCAUTION

to lubricate the drum bearing grease fittings

Lubricating the Grease Fittings

Figure 26. Grease Fittings (Drum Head Seals)

Drum Bearing Bracket Lubrication

Figure 28. Grease Fittings (Countershaft)

Wheel Bearings

1. After every 3 months of operation, remove the hub dust cap and inspect the wheel bearings (Figure 29). Once a year, or when required, disassemble the wheel hubs remove the old grease and repack the bearings forcing grease between rollers, cone and cage with a good grade of high

never

speed wheel bearing grease ( than 265 A.S.T.M. penetration (“No. 2.”)

Figure 29. Wheel Hub and Bearings

use grease heavier

Figure 27. Grease Fittings (Dumping Mechanism)

PAGE 28 — STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10)

STOW MS-70 PLASTER/MORTAR MIXER — MAINTENANCE (MIXER)

2. Fill the wheel hub (Figure 28) with grease to the inside diameter of the outer races and also fill the hub grease cap. Reassemble the hub and mount the wheel. Then tighten the adjusting nut, at the same time turn the wheel in both directions, until there is a slight bind to be sure all the bearing surfaces are in contact.

Then back-off the adjusting nut 1/6 to 1/4 turn or to the nearest locking hole or sufficiently to allow the wheel to rotate freely within limits of .001" to .010" end play. Lock the nut at this position. Install the cotter pin and dust cap, and tighten all hardware.

MAIN GEAR AND DRIVE PINION ALIGNMENT

Disconnect the spark plug wire

mixer is equipped with an electric motor

cord from AC power receptacle

the clutch engagement lever is belt tension.

2. The countershaft and drive pinion are mounted on a slotted base. To align drive pinion with main gear, loosen the pillow block mounting bolts and move them until the necessary alignment has been made. Remember gears must be paralleled aligned not skewed.

3. Using your hand, slightly move (rock) the drive pulley back and forth to determine the amount of backlash. Insert feeler gauge between gears to determine backlash distance. Backlash should range between 0.007- 0.012 inches (Figure 30).

(gasoline engines). If

remove power

. In addition make sure

dis-engaged

to relieve V-

INSPECT TOOTH CONTACT BETWEEN MAIN GEAR AND DRIVE PINION

1. Coat 3 or 4 teeth at 3 different positions on the main gear with yellow paint.

2. Rotate the drive pulley in both directions.

3. Inspect the tooth pattern.

4. If gear teeth are not contacting properly (Figure 31), adjust pillow block to correct the problem.

GEAR LUBRICATION

The surface of the pinion and main gear (Figure 32) should be very lightly greased.

Figure 31. Gear Teeth Alignment

Figure 30. Drive Pinion and Main Gear (Backlash)

STOW MS-70 MIXER — OPERATION MANUAL — REV. #3 (03/26/10) — PAGE 29

Grease main and pinion gears

NOTE

250 hours of operation

every

IMPORTANT! avoid over-

greasing. Excess grease will accumulate contaminates and cause premature wear.

Figure 32. Pinion and Bull Gear Lubrication

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