PROPOINT 8354649 User manual

Please read this manual before use.
User Manual
V 3.05 8354649
5 IN. COMPOSITE
AIR ANGLE GRINDER

2 For technical questions call 1-800-665-8685
V 3.05 8354649
5 IN. COMPOSITE
AIR ANGLE GRINDER
SPECIFICATIONS
Construction Housing Composite
Exhaust Style Swivel
Safety Guard Yes
Air Inlet 1/4 in. NPT
Recommended Air Hose Size 3/8 in.
Maximum Pressure 90 PSI
Air Consumption @ 90 PSI 4.2 CFM
No Load Speed 11,000 RPM
Wheel Diameter 5 in.
Spindle Size 5/8 in. x 11 TPI
INTRODUCTION
This lightweight, ultra-strong and durable composite construction
angle grinder has a swivel exhaust, safety lever, spindle lock and
wheel guard. It is designed for grinding and cutting applications.

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SAFETY
WARNING! Read and understand all instructions before using this
tool. The operator must follow basic precautions to reduce the
risk of personal injury and/or damage to the equipment.
Keep this manual for safety warnings, precautions, operating or
inspection and maintenance instructions.
HAZARD DEFINITIONS
Please familiarize yourself with the hazard notices found in this
manual. A notice is an alert that there is a possibility of property
damage, injury or death if certain instructions are not followed.
WARNING! This notice indicates a specific hazard or unsafe
practice that could result in severe personal injury or death if the
proper precautions are not taken.
NOTICE! This notice indicates that a specific hazard or unsafe
practice will result in equipment or property damage, but not
personal injury.
WORK AREA
1. Operate in a safe work environment. Keep your work area
clean, well lit and free of distractions.
2. Keep anyone not wearing the appropriate safety equipment
away from the work area.
3. Store tools properly in a safe and dry location. Keep tools out
of the reach of children.
4. Do not install or use in the presence of flammable gases
or liquids.

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PERSONAL SAFETY
WARNING! Wear personal protective equipment approved by
the Canadian Standards Association (CSA) or American National
Standards Institute (ANSI).
PERSONAL PROTECTIVE EQUIPMENT
1. Always wear impact safety goggles that provide front and
side protection for the eyes. Wear a full-face shield if your
work creates metal filings or wood chips.
2. Wear gloves that provide protection based on the work
materials or to reduce the eects of tool vibration.
3. Non-skid footwear is recommended to maintain footing and
balance in the work environment.
4. Steel toe footwear or steel toe caps to prevent injury from
falling objects.
5. Wear protective clothing designed for the work environment
and tool.
6. Wear the appropriate rated dust mask or respirator.
7. This tool can cause hearing damage. Wear hearing protection
gear with an appropriate Noise Reduction Rating to
withstand the decibel levels.
PERSONAL PRECAUTIONS
Control the tool, personal movement and the work environment to
avoid personal injury or damage to tool.
1. Do not operate any tool when tired or under the influence of
drugs, alcohol or medications.
2. Avoid wearing clothes or jewelry that can become entangled
with the moving parts of a tool. Keep long hair covered
or bound.
3. Do not overreach when operating a tool. Proper footing and
balance enables better control in unexpected situations.
4. Support the workpiece or clamp it to a stable platform.
Holding the workpiece by hand or against your body may
lead to personal injury.
5. Securely hold this tool using both hands. Using a tool with
only one hand can result in loss of control.

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GRINDING TOOL PRECAUTIONS
WARNING! Some surfaces contain materials which can be toxic.
When working on materials that may contain lead, asbestos,
copper chromium arsenate or other toxic materials, extra care
should be taken to avoid inhalation and minimize skin contact.
1. Only use a grinding wheel that exceeds the maximum RPM of
the tool (see Specifications).
2. Only use a grinding wheel with the correct arbor size and
shape that matches the grinder’s spindle.
3. Always ensure the safety guard is attached correctly and do
not operate the angle grinder without the guard attached.
4. Ensure the grinding wheel has a clean edge. Check the
grinding wheel for wear or chipping and replace if necessary.
5. Never install more than one wheel at a time.
6. Hold tool by insulated gripping surfaces when performing an
operation where the cutting tool may contact hidden wiring.
Contact with a live wire will electrify exposed metal parts of
the tool and shock the operator.
7. Before using the tool on the workpiece, run the tool at the
highest speed, without a load, for at least 30 seconds in a
safe position. Stop immediately if there is any vibration or
wobbling that could indicate poor installation or a poorly
balanced grinding wheel. Check the tool to determine
the cause.
8. Do not allow the motor to overload or overheat. Take breaks
to rest the tool.
9. When the machine is in operation, keep hands away from the
grinding area.
10. Do not subject the grinding wheel to any lateral pressure as it
may damage the tool or cause it to kickback.
11. A large amount of sparks will be created when working with
angle grinder. Hold the tool so that sparks fly away from you
and other persons or flammable materials. Keep up to date
fire-prevention safety instructions in the event of a fire.

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12. Do not place the tool down after use until the grinding wheel
has come to a complete stop. The grinding wheel will not
stop immediately when the machine is turned o.
13. Do not touch the grinding wheel or the workpiece surface
worked on with this tool. They may be hot and could inflict a
burn injury.
14. Do not use a coolant or water with this angle grinder.
15. Do not use as a fixed grinder.
GENERAL SAFETY PRECAUTIONS
VIBRATION PRECAUTIONS
1. This tool vibrates during use. Repeated or long-term
exposure to vibration may cause temporary or permanent
physical injury. Take frequent breaks when using the tool.
2. If you feel any medical symptoms related to vibrations
(such as tingling, numbness and white or blue fingers), seek
medical attention as soon as possible.
3. Wear suitable gloves to reduce the eects of vibration.
4. DO NOT use this tool before consulting a physician if one of
the following applies:
4.1 Pregnant
4.2 Impaired blood circulation to the hands
4.3 Past hand injuries
4.4 Nervous system disorders
4.5 Diabetes
4.6 Raynaud’s Disease
AIR TOOL PRECAUTIONS
1. Inspect the tool’s airline for cracks, fraying or other faults
before each use. Discontinue use if the airline is damaged
or hissing is heard from the airline or connectors, while
operating the tool. Replace the defective component/airline.
2. Do not allow people, mobile equipment or vehicles to pass
over the unprotected airline. Position the airline away from
high trac areas, in a reinforced conduit or place planks on
both sides of the airline to create a protective trench.
3. Prevent damage to the airline by observing the following:

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3.1 Never carry the tool by the airline.
3.2 Keep the airline behind the tool and out of the tool’s
work path.
3.3 Keep the airline away from heat, oil, sharp edges or
moving parts.
3.4 Do not wrap the airline around the tool as sharp edges
may pierce or crack the airline. Coil the airline
when storing.
4. A damaged or disconnected airline under pressure may
whip around and inflict personal injury or damage the work
area. Secure the compressor’s airline to a fixed or permanent
structure with clamps or cable ties.
5. Install an in-line shuto valve or regulator to allow immediate
control over the air supply in an emergency, even if a hose
is ruptured.
6. Check the manufacturer’s maximum pressure rating for air
tools and accessories. Compressor outlet pressure must
be regulated so as to never exceed the maximum pressure
rating of the tool.
KICKBACK PRECAUTIONS
Kickback is a sudden reaction to a pinched or snagged accessory.
The accessory digs into the material or is snagged during a cut.
This causes the accessory to kick out. Kickback may result in
serious injury or damage to the tool, accessory or workpiece.
Kickback can be avoided by taking proper precautions:
1. Maintain a firm grip on the tool and position your body
and arms to allow you to resist kickback forces. Kickback
will propel the tool in the direction opposite to the wheel’s
rotation at the time of snagging.
2. Never place your hand or any body part near the rotating
accessory. If kickback occurs, the wheel may pass over the
body part, causing a seriously injury. Use clamps or a vice to
hold down the workpiece.

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3. Use special care when working on corners, sharp edges or
flexible material. Corners, sharp edges or bouncing have a
tendency to snag the rotating accessory.
4. Only use accessories designed for the tool.
USE AND CARE OF TOOL
1. Use the correct tool for the job. This tool was designed for a
specific function. Do not modify or alter this tool or use it for
an unintended purpose.
2. Do not carry the tool with fingers near or on the
trigger/switch.
3. Avoid unintentional starts. Be sure that the regulator/throttle
switch is in the neutral or OFF position when not in use and
before connecting it to any air source.
4. Remove adjusting keys and wrenches from the tool before
operation or connecting it to a power source. A wrench
or key that is left attached to a rotating part of the tool
increases the risk of personal injury.
PARTS IDENTIFICATION
WARNING! Do not operate the tool if any part is missing. Replace
the missing part before operating. Failure to do so could result in
a malfunction and personal injury.
Remove the parts and accessories from the packaging and inspect for
damage. Make sure that all items in the parts list are included.
Contents:
• Angle grinder
• Spanner wrench
• Side handle

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IDENTIFICATION KEY
ASide exhaust
BSpindle lock button
COuter flange
DWheel guard
ESide handle
FSafety lever
GSpanner wrench
INSTALLATION
WHEEL GUARD
1. Always be sure that the tool is switched o and unplugged
before attempting to perform any adjustments.
2. Install the wheel guard in a position that is convenient for
operating. Make sure that it is in the proper position and is
not loose.
3. The wheel guard must be fitted on the tool so that the closed
side of the guard always points toward the operator.

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INSTALLATION OF THE SIDE HANDLE
Attach the side handle firmly into the desired position. It can be
installed in two locations on the machine’s housing - the left or
right side, depending on your preference.
GRINDING WHEEL
WARNING! Always be sure that the tool is switched o,
disconnected and has stopped moving before attempting to
perform any adjustments.
1. Place the backing washer over the spindle, making sure the
fit is tight.
2. Place the grinding or cutting wheel on the top of the backing
washer ensuring the bore fits into the step of the flange.
3. Mount the concave recess side of the locking nut over
the spindle.
3.1 Position the protruding part of the outer flange towards
the disc if you are mounting a grinding wheel.
3.2 Position the protruding part of the outer flange away
from the disc if mounting a cut-o disc.
4. Press the spindle lock and ensure there is no movement in
the spindle. Then while the spindle lock is depressed tighten
the locking nut in a clockwise direction using the pin spanner.
5. Allow the angle grinder to run idle for at least a minute with
the grinding or cutting disc correctly assembled.
5.1 A vibrating wheel should immediately be reinstalled and
tested. If the wheel continues to vibrate, replace with a
new one.
OPERATION
1. Disconnect grinder from the air source.
2. Fit the appropriate disc to the grinder.
3. Connect the grinder to the air source and press the trigger.
Allow the grinder to run for a minute with no load before use.
4. For the best work results hold the grinder at a 10 to 15° angle
to the workpiece.

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5. Use the handle to help steady tool and guide back and forth
over the workpiece in a steady motion.
6. When cutting avoid tilting the tool in the cutting plane.
Ensure the cutting wheel has a clean cutting edge.
7. To cut hard stone a diamond cutting wheel is recommended.
8. Do not use a cutting wheel for rough grinding.
9. After you are finished using the tool, turn it o. The disc will
continue spinning for a short amount of time. Do not put the
tool down until it has completely stopped moving.
10. If any of the following events occur during normal operation,
the tool should be shut o at once and thoroughly inspected
by a qualified person and repaired if necessary:
10.1 The turning parts get stuck or speed drops
abnormally low.
10.2 The tool shakes abnormally, accompanied by
unusual noise.
10.3 A burning or acrid odour is noticed.
10.4 The housing becomes abnormally hot.
MAINTENANCE
1. Maintain the tool with care. A tool in good condition is
ecient, easier to control and will have fewer problems.
2. Inspect the tool components periodically. Repair or replace
damaged or worn components.
3. Follow instructions for lubricating and changing accessories.
4. Keep the tool handles clean, dry and free from oil/grease at
all times.
5. Inspect the tool fittings, alignment and hoses periodically.
Have damaged or worn components repaired or replaced by
an authorized technician.
6. When servicing, use only identical replacement parts. Only
use accessories intended for use with this tool. Replace
damaged parts immediately.
WARNING! Only qualified service personnel should repair the
tool. An improperly repaired tool may present a hazard to the
user and/or others.

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AIR TOOL LUBRICATION
Only use air tool oil to lubricate the tool. Other lubricants may
not be suitable and could damage the tool or cause a malfunction
during use.
1. All air tools are packed in grease to prevent corrosion of
internal parts during shipping and storage. To clean this out,
add a generous amount of air tool oil in the air inlet and then
run the tool under no load until exhaust is clear.
2. Manually add a drop or two of air tool oil into the tool’s
male connector before each use and after every hour of
continuous use. Without lubrication, the tool will not work
properly and parts will wear prematurely.
3. Avoid adding too much air tool oil as this can cause
premature power loss and eventual tool failure. The tool will
need to be taken apart by a qualified technician and cleaned
of excess oil.
4. In the event that it becomes necessary to store the tool for
an extended period of time (overnight, weekend, etc.), it
should receive a generous amount of lubrication at that time.
The tool should be run for approximately 30 seconds to
ensure oil has been evenly distributed throughout the tool.
The tool should be stored in a clean and dry environment.
NOTICE! NEVER use a penetrating oil to lubricate the tool.
Penetrating oil may act as a solvent that will break down the
grease and cause the tool to seize up.
STORAGE
When not in use for an extended period, apply a thin coat of
lubricant to the steel parts to avoid rust. Remove the lubricant
before using the tool again.

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DISPOSAL
Recycle a tool damaged beyond repair at the appropriate facility.
Contact your local municipality for a list of disposal facilities or
by-laws for electronic devices, batteries, oil or other toxic liquids.
TROUBLESHOOTING
Contact Princess Auto Ltd. for a solution if the tool does not
function properly or parts are missing. If unable to do so, have a
qualified technician service the tool.
Problems Possible Causes Suggested Solutions
Tool runs at
normal speed,
but loses power
under load.
Motor parts worn. Contact Princess Auto Ltd.
for a solution. If unable to do
so, have a qualified technician
service the tool.
Tool runs slowly.
Air flows slightly
from exhaust.
Motor parts
jammed with dirt
particles.
OR
Airflow blocked
by dirt.
1. Check air inlet filter
for blockage.
2. Pour air tool
lubricating oil into
air inlet as per
Lubrication instructions.
3. Operate tool in
short bursts.
4. Repeat above as needed.
If this fails, contact
Princess Auto Ltd. for
a solution.
Air regulator in
closed position.
Open the air regulator to
desired airflow.

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Problems Possible Causes Suggested Solutions
Tools will not run.
Air flows freely
from exhaust.
O-rings throttle
valve dislodged
from seat
inlet valve.
Contact Princess Auto Ltd.
for a solution. If unable to do
so, have a qualified technician
service the tool.
Damage or
excessive wearing
of internal parts.
Piston is jammed. 1. Remove chisel and
spring retainer.
2. Push punch through
hole in the cylinder until
resting against the piston.
3. Sharply strike punch
with a hammer to loosen
piston.
4. If still jammed,
disassemble barrel from
housing and use punch to
push piston through the
rear of barrel.
5. Clean the barrel and
piston and remove
any rust.
6. Reassemble.
7. If unable to free piston,
contact Princess Auto for
a solution.
Tool will not
shut o.
O-rings throttle
valve dislodged
from seat
inlet valve.
Contact Princess Auto Ltd.
for a solution. If unable to do
so, have a qualified technician
service the tool.

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Problems Possible Causes Suggested Solutions
Loss of power or
erratic performance.
Excessive drain
on the airline.
Incorrect size or
type of
hose connectors.
Check the airline and confirm
the hose fitting is correct for
the inlet bushing.
Moisture or
restriction in the
airline/tank.
Depressurize system and
drain tank and airline of
water.
Air compressor
has insucient
flow.
Ensure tool is connected to a
compressor with a rate flow
that matches the tool.

5 in. Composite Air Angle Grinder
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PARTS BREAKDOWN

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PARTS LIST
PART # DESCRIPTION QT Y. PART IDENTIFIER
1 Regulator 1 ST87001
2 O-ring (p10) 1 OB-02
3 O-ring (p9) 1 ST288303
4 Housing 1 ST85504
5 O-ring (3.5*1.4) 1 OB-04
6 Valve stem 1 CT288306
7 Snap ring 1 OB-30
8 Protecting rubber 1 ST85508
9 Washer 1 OB-06
10 Valve 1 STOB-08
11 Spring 1 OB-09-1
12 Inlet bushing 1 70426
13 Spring holder 1 ST87020
15 Spring (9.7*1.2T*16.5) 1 ST87022
16 Governor valve 1 ST87023
17 Governor cage 1 ST87027
18 Governor weight 2 ST87025
19 Pin (2*11.8L) 1 ST87024
20 Governor pin 2 ST87026
21 Washer 2 ST88051-1
22 Bearing (608zz) 2 21024
23 Rear plate 1 ST85030
24 Rotor blade 5 ST85031
25 Rotor 1 ST85032
26 Bearing spacer 1 ST85046
27 Pin (3*8l) 1 81326

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PART # DESCRIPTION QT Y. PART IDENTIFIER
28 Cylinder 1 ST85034
29 Front plate 1 ST85035
30 Bearing (6000zz) 2 70048A
31 Bevel gear (13t) 1 ST85531A
32 O-ring (26.7*1.78 A-023) 1 70011
33 Bushing 1 ST85039-1
34 Silencer 1 ST87041
35 Stainless mesh 1 ST87059
36 Exhaust sleeve 1 ST85536
37 Adapter 1 ST85537
38 Angle housing 1 ST85538A
39 Screw (m5*6l) 1 80528
40 Shaft stem 1 ST85540
41 Bushing 1 ST85541
42 Spring 1 ST85542
43 Push button 1 ST85543
44 Screw (m5*45l) 2 70415-2
45 Screw (m5*55l) 2 AGD100-26
46 Pin (3*12l) 1 ST85546
47 Spacer 1 70412-1
48 Retaining ring 1 OB-17
49 Bevel gear (19t) 1 ST85549A
50 Bearing (6202zz) 1 ST87036A
51 Shaft (5/8 in.) 1 ST85551A
52 Key 1 ST70407
53 Face plate 1 ST80537-3

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PART # DESCRIPTION QT Y. PART IDENTIFIER
54 Disc cover (5 in.) 1 ST80537
55 Screw 4 ST70403A
56 Disc nut (5/8 in.) 1 ST85562A
57 Handle 1 BT80438-12.5
58 Disc spanner (18 mm) 1 BT87057.1
59 Packing 1 ST85559
60 Spring pin 1 12012.1
61 Safety throttle 1 ST200A13
62 Disc nut (5/8 in.) 1 ST85563A