Speedaire 5YAR9 Instructions for use

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Speedaire®4"
Reversible Angle Grinder
Operating Instructions & Parts Manual 5YAR9
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the product described.
Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or
property damage! Retain instructions for future reference.
Form 5S6624 Printed in China
04634
Version 0
KKU373
08/10
#628
Description
Speedaire This heavy duty reversible angle grinder with energy efficient 0.9 hp motor is
provided plenty of power for rust adn material removal. REversible option to direct sparks
and debris away from the user and sensitive work surfaces.
Includes:
1 - 4" Reversible Angle Grinder
1 - Wrench
1 - Hex Wrench
Figure 1
Unpacking
When unpacking the unit, carefully look for
any damage that may have occurred during
transit. Check for loose, missing or damaged
parts.
Specifications
Free Speed (No load) ....................12,000 RPM
HP................................................................. 0.9
Exhaust ......................................................Rear
Length................................................... 9-3/16"
Wheel Diameter........................................... 4"
Spindle Size ............................................... 5/8"
Average Air Consumption
@ 15 Second Run Time...................... 3.35 CFM
Minimum Hose Size ............................3/8" I.D.
Air Inlet...............................................1/4" NPT
Maximum Air Pressure............................90 PSI
Weight ...................................................2.4 lbs.
General Safety Information
1. For Additional Safety
Information Consult:
Your employer, union, and/or trade
association. US Department of Labor
(OSHA); www.osha.gov. “Safety Code
For Portable Air Tools” (B186.1)
2. Wheel Guard Usage
Always use the recommended wheel
guard to prevent injury from broken
grinding wheel parts.
If a guard has withstood a wheel
breakage do not continue to use it. It may
be damaged.
Position the guard between the grinding
wheel and the operator.
Use barriers to protect others from wheel
fragments and grinding sparks.
3. Projectile Hazards
Always wear impact-resistant eye and
face protection when involved with or
near the operation, repair or
maintenance of the tool or changing
accessories on the tool.
Be sure all others in the area are wearing
impact-resistant eye and face protection.
Even small projectiles can cause eye
injuries and blindness.
A grinding wheel that bursts can cause
very serious injury.
Daily measure the air grinder speed with
a tachometer to make sure it is not
greater than the RPM marked on the
grinding wheel.
Never use a grinding wheel marked with
a speed lower than the air grinder speed.
4. Grinding Wheel Mounting Hazards
Correct grinding wheel mounting is
necessary to prevent injury from broken
wheels.
Do not use chipped or cracked grinding
wheels.
Grinding wheels should be a free fit on
the spindle to prevent stress at the hole.
Use only wheel collars that come with the
grinder for mounting the grinding wheel.
Flat washers or other adapters may over
stress the wheel. Always use heavy paper
blotter discs between the wheel collars
and the grinding wheel.
Tighten the wheel on the spindle to
prevent spin off when the air grinder is
turned off.
Before grinding, test grinding wheel by
briefly running tool at full throttle. Be
sure to use a barrier (such as under a
heavy work table) to stop any possible
broken wheel parts.
5. Workplace Hazards
Slip/Trip/Fall is a major cause of
serious injury or death. Beware of
excess hose left on the walking or
work surface.
High sound levels can cause
permanent hearing loss. Use hearing
protection as recommended by your
employer or OSHA regulation (see 29
CFR part 1910).
Maintain a balanced body position
and secure footing.
Repetitive work motions, awkward
positions and exposure to vibration
can be harmful to hands and arms.
If numbness, tingling, pain or
whitening of the skin occurs, stop
using tool and consult a physician.
Avoid inhaling dust or handling debris
from the work process which can be
harmful to your health. Use dust
extraction and wear respiratory protective

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Speedaire®4" Reversible
Angle Grinder
5YAR9
Speedaire® Operating Instructions and Parts Manual
General Safety Information
(continued):
5. Workplace Hazards (continued)
which produce airborne particles.
This tool is not intended for use in
explosive atmospheres and is not
insulated for contact with electric
power sources.
Potentially explosive atmospheres can
be caused by dust and fumes resulting
from sanding or grinding.
Use dust extraction or suppression system
which is suitable for the material being
processed.
Some dust created by power sanding,
sawing, grinding, drilling and other
construction activities contains chemicals
known to the State of California to
cause cancer and birth defects or other
reproductive harm.
Some examples of these chemicals
are:
– Lead from lead based paints
– Crystalline silica bricks
and cement and other masonry
products
– And Arsenic and chromium
from chemically-treated rubber
Your risk from these exposures
varies, depending on how often
you do this type of work. To reduce
your exposure to these chemicals:
work in a well ventilated area, and
work with approved safety
equipment, such as dust masks that
are specially designed to filter out
microscopic particles.
For professional use only.
Installation
Designed to operate on 90 PSI, lower
pressure (below 90 PSI) will reduce
performance of the tool while higher air
pressure over 90 PSI raise the performance of
the tool beyond its rated capacity and could
cause serious damage to tool and user.
Always use clean dry air. Excessive moisture
and dirt will greatly reduce the life of any air
motor. We recommend the installation of an
in-line filter-regulator-lubricator as close to
the tool as possible.
Pre-Operation
Before the tool is connected to the air
supply, clean the air hose of accumulated
dust and moisture. Before removing a tool
for service or changing accessories, make
sure the air line is shut off and drained of air.
This will prevent the tool from operating if
the throttle is accidentally engaged.
Operation
1. Supply tool with 90 PSI of clean, dry air.
Higher pressure drastically reduces tool
life. Connect tool to air line using pipe,
hose, and fitting sizes shown in Figure 2.
Do not install a quick coupler directly into
the grinder throttle handle.
2. Air Supply and Connection
Hazards.
Air under pressure can cause severe
injury.
Always shut off air supply, drain hose of
air pressure and disconnect tool from air
supply when not in use, before changing
accessories or when making repairs.
Never direct air at yourself or
anyone else.
Whipping hoses can cause serious injury.
Always check for damaged or loose hoses
and fittings.
Do not use quick disconnect couplings at
tool. See Figure 2 for correct set up.
Whenever universal twist couplings
are used, lock pins must be installed.
Do not exceed maximum air pressure of
90 PSI or as stated on tool nameplate.
Maintenance
Lubrication
Use an air line lubricator with Mobil Almo
525 air tool oil (model 4ZF22), adjusted
to two (2) drops per minute. If an air line
lubricator cannot be used, add air motor
oil to the inlet once a day.
Figure 2 - Air Diagram

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For Repair Parts, call 1-800-323-0620
24 hours a day – 365 days a year
Please provide following information:
-Model number
-Serial number (if any)
-Part description and number as shown in parts list
Speedaire® Operating Instructions and Parts Manual 5YAR9
Figure 3 – Repair Parts Illustration for Speedaire® 4" Reversible Angle Grinder
Repair Parts List for Speedaire® 4" Reversible Angle Grinder
1 Regulator TTST25101A2G 1
2 O-Ring (AS015) TTST25102G 1
3 O-Ring (3.5*1.4) TTOB04G 1
4 Valve Stem TTOB05G 1
5 O-Ring (P10) TTOB02G 1
6 Regulator TTST25106G 1
7 Air Inlet TTST25107AG 1
8 Exhaust Sleeve TTST25108AG 1
10 Protecting Rubber TTST250R1010G 1
11 Pin TT120121G 1
12 Lever TTST25112G 1
13 Spring TTST288314G 1
14 Valve TTST288315G 1
15 Washer (6*13.8*1.6T) TTST288316G 1
16 Pin (2.8*25.8L) TTST25116AG 1
17 Housing TTST251171G 1
18 Bearing (626) TTST22536AG 1
19 Washer (17*33.2*0.8t) TTST25119G 1
20 Rear Plate TTST25120G 1
22 Rotor Blade TTST25122G 4
23 Rotor TTST25523G 1
24 Cylinder TTST21315G 1
25 Bearing Spacer TTST25125G 1
26 Pin (2.5*6L) TT70018G 2
27 Front Plate TTST25127G 1
28 Bearing (6000ZZ) TT70048AG 1
32 Nut TTST25432G 1
33 Clamp Nut TTST25433G 1
34 Spindle Housing TTST25534G 1
35 Spindle TTST25535G 1
36 Bearing (609) TTST288734G 2
37 Pinion Gear (14T) TTST25437G 1
38 Screw (M4*20) TTST25538G 1
39 Angle Housing TTST25439G 1
40 Washer TTST25440G 1
41 Bearing (HKU609) TTST25441G 1
43 Pinion Gear (21T) TTST25443G 1
44 Bearing (6904) TTST25444G 1
45 Nut TTST25446G 5
46 Screw (M4*20) TTST25446G 1
47 HANDLE LLINK TTST25447G 1
48 Face Plate TTST25448G 1
49 Screw (M4*10) TTST81317G 4
50 Disc Cover TTST25550G 1
51 Screw (M4*6) TTST288542G 4
52 Nut TTST25452G 1
54 Washer TTST25454G 1
55 Nut TTST25555G 1
56 Screw TTST25456G 1
57 Stop Spanner (14mm) TTBT25457G 1
58 Hex (4mm) TT26045G 1
60 O-Ring (S16) TTST25150G 1
61 Oil Cup TT21029G 1
62 Muffler Body TTST20036G 1
63 Washer TTLDB250R43G 1
64 O-Ring (AS125) TTLDB250R45G 1
65 O-Ring (S30) TTLDB250R46G 1
66 Screw (M4*8) TT81447G 1
67 Snap ring (RTW-18) TTST25148G 1
68 Regulator TTST25404A1G 1
69 Snap ring (ETW-4) TTST10015G 1
70 Nut TTST254B64G 1
71 Spring TTST254B62G 1
72 Pin TTST254B63G 1
Ref. Part
No. Description No. Qty.
Ref. Part
No. Description No. Qty.

Manufactured for Dayton Electric Mfg. Co.
Niles, Illinois 60714 U.S.A.
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5YAR9
Speedaire® Operating Instructions and Parts Manual
LIMITED WARRANTY
DAYTON ONE-YEAR LIMITED WARRANY. SPEEDAIRE®REVERSIBLE ANGLE GRINDER MODELS COVERED IN THIS MANUAL,
ARE WARRANTED BY DAYTON ELECTRIC MFG. CO. (DAYTON) TO THE ORIGINAL USER AGAINST DEFECTS IN WORKMANSHIP
OR MATERIALS UNDER NORMAL USE FOR ONE YEAR AFTER DATE OF PURCHASE. ANY PART WHICH IS DETERMINED TO
BE DEFECTIVE IN MATERIAL OR WORKMANSHIP AND RETURNED TO AN AUTHORIZED SERVICE LOCATION, AS DAYTON
DESIGNATES, SHIPPING COSTS PREPAID, WILL BE, AS THE EXCLUSIVE REMEDY, REPAIRED OR REPLACED AT DAYTON’S
OPTION. FOR LIMITED WARRANTY CLAIM PROCEDURES, SEE “PROMPT DISPOSITION” BELOW. THIS LIMITED WARRANTY
GIVES PURCHASERS SPECIFIC LEGAL RIGHTS WHICH VARY FROM JURISDICTION TO JURISDICTION.
LIMITATION OF LIABILITY. TO THE EXTENT ALLOWABLE UNDER APPLICABLE LAW, DAYTON’S LIABILITY FOR CONSEQUENTIAL
AND INCIDENTAL DAMAGES IS EXPRESSLY DISCLAIMED. DAYTON’S LIABILITY IN ALL EVENTS IS LIMITED TO AND SHALL NOT
EXCEED THE PURCHASE PRICE PAID.
WARRANTY DISCLAIMER. A DILIGENT EFFORT HAS BEEN MADE TO PROVIDE PRODUCT INFORMATION AND ILLUSTRATE
THE PRODUCTS IN THIS LITERATURE ACCURATELY; HOWEVER, SUCH INFORMATION AND ILLUSTRATIONS ARE FOR THE SOLE
PURPOSE OF IDENTIFICATION, AND DO NOT EXPRESS OR IMPLY A WARRANTY THAT THE PRODUCTS ARE MERCHANTABLE,
OR FIT FOR A PARTICULAR PURPOSE, OR THAT THE PRODUCTS WILL NECESSARILY CONFORM TO THE ILLUSTRATIONS OR
DESCRIPTIONS. EXCEPT AS PROVIDED BELOW, NO WARRANTY OR AFFIRMATION OF FACT, EXPRESSED OR IMPLIED, OTHER
THAN AS STATED IN THE “LIMITED WARRANTY” ABOVE IS MADE OR AUTHORIZED BY DAYTON.
Technical Advice and Recommendations, Disclaimer. Notwithstanding any past practice or dealings or trade custom,
sales shall not include the furnishing of technical advice or assistance or system design. Dayton assumes no obligations
or liability on account of any unauthorized recommendations, opinions or advice as to the choice, installation or use of
products.
Product Suitability. Many jurisdictions have codes and regulations governing sales, construction, installation, and/or
use of products for certain purposes, which may vary from those in neighboring areas. While attempts are made to assure
that Dayton products comply with such codes, Dayton cannot guarantee compliance, and cannot be responsible for how
the product is installed or used. Before purchase and use of a product, review the product applications, and all applicable
national and local codes and regulations, and be sure that the product, installation, and use will comply with them.
Certain aspects of disclaimers are not applicable to consumer products; e.g., (a) some jurisdictions do not allow the exclusion
or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you; (b) also,
some jurisdictions do not allow a limitation on how long an implied warranty lasts, consequently the above limitation
may not apply to you; and (c) by law, during the period of this Limited Warranty, any implied warranties of implied
merchantability or fitness for a particular purpose applicable to consumer products purchased by consumers, may not be
excluded or otherwise disclaimed.
Prompt Disposition. A good faith effort will be made for prompt correction or other adjustment with respect to any
product which proves to be defective within limited warranty. For any product believed to be defective within limited
warranty, first write or call dealer from whom the product was purchased. Dealer will give additional directions. If unable to
resolve satisfactorily, write to Dayton at address below, giving dealer’s name, address, date, and number of dealer’s invoice,
and describing the nature of the defect. Title and risk of loss pass to buyer on delivery to common carrier. If product was
damaged in transit to you, file claim with carrier.
Manufactured for Dayton Electric Mfg. Co., 5959 W. Howard St., Niles, Illinois 60714-4014 U.S.A.
Speedaire®4" Reversible
Angle Grinder
4