BIRO 3334SS Service manual

No. 16313-100-5-18-40 B
IMPORTANT NOTICE
This Manual contains important
safety instructions which must
be strictly followed when using
this equipment.
3334SS 3334SS-4003
MODEL 3334 & 3334-4003 SERIES POWER MEAT SAW
OPERATING AND SERVICE MANUAL
REVISED - SERIAL No.1,000 ON
SQ. BASE #35323 ON
FLAT TOP #35323 ON

TABLE OF CONTENTS
PAGE
NOTICE TO OWNERS AND OPERATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING LABELS FOR POWER SAWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARNING LABEL LOCATIONS ON MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TO PROCESS PRODUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATOR’S NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PARTS DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MOTOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SWITCH ASSEMBLIES AND SERVICE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WEARABLE SAW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATOR’S SIGNATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
2
3
5
6
11
11
12
13
9
33&34
35-41
10
45
48
49
6&7
WALL CHART (PART No. 671) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SAW GUIDE BAR AND SAW GUARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13&14
LONGER SAW GUARD KIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15&16
BASE DOOR HINGE SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
NEW DESIGN “FLAT TOP” BASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
19-28
MOTOR COVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
PARTS DIAGRAM, LOWER REMOVABLE WHEELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-32
PARTS LIST/ORDERING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42&43
PARTS ASSEMBLIES LIST/ORDERING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
STAINLESS STEEL HEAD STRUCTURE HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
46&47

NOTICE TO OWNERS AND OPERATORS
Warnings related to possible damage are indicated by:
OR
1
This Manual contains a number of safe practices in the SAFETY TIP section. Additional warnings are
placed throughout the Manual. Warnings related to your personal safety are indicated by:
BIRO’s products are designed to process food products safely and efciently. Unless the operator is
properly trained and supervised, however, there is the possibility of a serious injury. It is the responsibility of
the owner to assure that this machine is used properly and safely, strictly following the instructions contained in
this Manual and any requirements of local law.
No one should use or service this machine without proper training and supervision. All operators should
be thoroughly familiar with the procedures contained in this Manual. Even so BIRO cannot anticipate every
circumstance or environment in which its products will be used. You, the owner and operator, must remain alert
to the hazards posed by the function of this equipment - particularly the SHARP MOVING BAND TYPE SAW
BLADE. No on under eighteen (18) years of age should operate this equipment. If you are uncertain about a
particular task, ask your supervisor.
BIRO also has provided a wall chart to be posted near the equipment. If any warning label, wall chart, or
Manual becomes misplaced, damaged, or illegible, please contact your nearest Distributor or BIRO directly for
a replacement.
Remember, however, this Manual or the warning labels do not replace the need to be alert and to use
common sense when using this equipment.
This Manual applies to machines with serial number 1,000 and higher.
The descriptions and illustrations contained in this manual are not binding.
The manufacturer reserves the right to introduce any modication without
updating the manual.
- NOTE -
A copy of this manual is included with each
MODEL 3334 & 3334-4003 POWER MEAT SAW.

SAFETY TIPS
2
SHARP MOVING BAND TYPE SAW BLADE
TO AVOID SERIOUS PERSONAL INJURY
NEVER Touch This Machine Without Training and Authorization By Your Supervisor.
ALWAYS Read Operation and Parts Manual BEFORE Operating, Cleaning or Servicing.
ALWAYS Keep Hands Clear of Sharp Band Type Saw Blade and Other Moving Parts.
ONLY Use a Qualied Electrician to Install According to Local Building Codes: Machines
MUST Be Properly Grounded.
ONLY Install on Level, Non-Skid Surface in a Clean, Well-Lighted Area Away From Children and Visitors.
DO NOT Attempt to Operate This Machine Until it has Been Inspected and Demonstrated by the Seller -
Recognized BIRO Representative.
DO NOT Alter or Modify This Machine in any Way From its Original Form. This Machine in its Original
Form Meets the Intent of O.S.H.A. Applicable Standards.
NEVER Operate with Saw Guard on Saw Guide Bar in the Raised Position or the Saw Guard Removed from
the Saw Guide Bar.
ALWAYS Adjust the Saw Guide Bar with Saw Guard to Within ½” of Product to be Cut.
ALWAYS Use Supplied Safety End Cut Pusher Plate for Smaller Products or The Last Cuts of Products.
DO NOT Use This Machine for Non-Food Products.
DO NOT Use This Machine to Cut Pigs Feet.
DO NOT Wear Gloves While Operating.
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This Machine
BEFORE Removing Shrouds, Removable Guards, Covers, Doors, Fences or Panels for Cleaning,
Servicing or Any Other Reason.
PROMPTLY REPLACE Any Worn or Illegible Warning Labels.
USE ONLY BIRO Parts and Accessories Properly Installed.
NEVER Leave Machine Unattended While the Saw is Running.

INSTALLATION
1. Read this Manual thoroughly before installation and operation. Do not proceed with installation and
operation if you have any questions or do not understand anything in this Manual. Contact your local
Distributor, or BIRO rst.
3
3. After installing machine in operational area, it is imperative that the four adjusting legs be adjusted to
level the machine.
4. To assemble the meat gauge plate (Part No. AS16275) to the machine, loosen the lock knob
(Part No. 272-7-1) on the right side of meat gauge bracket. Raise the meat gauge gear rack (Part No. S16272)
and slip the meat gauge plate over the gear rack. Lower the gear rack to its original position, tighten lock
knob. Keep gear rack well oiled with a food grade oil to ensure free movement.
ALWAYS LEVEL MACHINE BEFORE USING
USE ONLY BIRO Parts and Accessories Properly Installed.
ALWAYS Read Operating and Service Manual BEFORE Operating, Servicing, or Cleaning.
ALWAYS Use Qualied Technician and Electrician for Installation.
ONLY Install on a Level, Non-Skid Surface in a Clean, Well-Lighted Work area Away From Children and
Visitors.
NEVER Operate Without all Warning Labels Attached and Wall Chart Posted.
NEVER Operate with Saw Guard Bar with Saw Guard in the Raised Position or the Saw Guard Removed from
the Saw Guide Bar.
DO NOT Attempt to Operate This Machine Until it has Been Inspected and Demonstrated by the Seller -
Recognized BIRO Representative.
DO NOT Alter or Modify This Machine in Any Way from its Original Form. This Machine in its Original
Form Meets the Intent of O.S.H.A Applicable Standards.
TO AVOID SERIOUS PERSONAL INJURY
PROPERLY INSTALL EQUIPMENT IN ADEQUATE WORK AREA
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This Machine
BEFORE Removing Shrouds, Removable Guards, Covers, Doors, Fences or Panels for Cleaning,
Servicing or Any Other Reason.
NEVER Leave Machine Unattended While the Saw is Running.
5. The head structure (Part No. 16005) comes detached from the
base. Slip the head into the slide gibs (Part No. 260) located on
the back of the base structure. Make sure the slide gibs are oiled
or greased to ensure free vertical movement of the head structure.
2. Install machine on a level, solid, non-skid surface in a well-lighted work area away from children and
visitors.

1. Interchange of motor current is made in motor outlet box. Leads are properly marked. Changing
instructions are on motor plate or inside junction box cover.
2. All saws are wired 220 volts unless otherwise specied. Be sure motor specications (voltage, cycle,
phase) match power supply line. Be sure line voltage is up to specication.
3. Connect leads to machine in a manner that will be approved by local electrical inspectors.
WIRING MOTOR
4. We recommend no less than No. 12 wire. If the leads are too light, machine may not have sufcient
cutting power and/or speed.
5. The drive belt is packed loose in machine to prevent deformation, and must be installed on pulleys at time
of wiring motor.
6. The BIRO Manufacturing Company is not responsible for permanent wiring, connection or installations.
NOTE TO OWNER AND ELECTRICIAN: IF THIS MACHINE IS NOT CORD
AND PLUG CONNECTED TO THE ELECTRICAL SUPPLY SOURCE, THEN
IT SHOULD BE EQUIPPED WITH, OR CONNECTED TO, A LOCKABLE,
MANUALLY OPERATED DISCONNECT SWITCH (1010.147 OSHA).
6. Place removable nger lift with saw guard assembly (Part No. A211) on the saw guide bar (Part No. 116-22)
and fasten in place with nger lift fastener knob (Part No. 211A-291Q).
8. The side platter bracket (Part No. S12214B) is packed loose in the machine and must be installed on the left
side of the base structure with the supplied hardware and checked for proper adjustment. Stationary platter
must be at.
9. The stationary platter (Part No. A16163-1) is placed on top of the base structure and held in place by two
push-pull hold down catches (Part No. 16212), located on the base structure.
4
SHARP SAW BLADE. HANDLE WITH EXTREME CAUTION
7. Placing blade on cutter: Hang upper wheel assembly (Part No. A16003U335-6) on the hinge bracket (Part
No. 71-1). Lift the nylon ller (Part No. 177). Hang blade on the upper wheel and hold with right hand. With
left hand force the back of the blade between the front blade cleaners (Part No. 131), located below the nylon
ller and insert the back of the blade in the upper saw guide (Part No. 602B). The blade has already dropped
over the lower wheel. With right hand force the back of the blade between the rear blade cleaners (Part No.
131). The blade is now ready to be tightened. Press down on the ratchet arm (Part No. 10-1) located at the
rear of the base structure. Turn the upper wheel slowly by hand to ensure proper tracking of the saw blade on
the wheels. Tighten to proper tension. When the tension gauge (Part No. 16197) located at the bottom rear of
the head becomes tight laterally, the blade is at proper tension.
10. The sliding meat carriage assembly (Part No. A16155) is installed by turning the movable stop assembly
(Part No. A16200) clockwise. After the carriage assembly is in the channel for operation, turn the movable
stop counterclockwise to lock.
11. Post SAFETY TIPS wall chart within easy view of operator. Keep Manual available to operator.
12. Machine MUST be properly grounded. Use qualied electrician to install according to building codes.
KEEP HANDS CLEAR OF SHARP MOVING BAND TYPE SAW BLADE

WARNING LABELS
FOR BIRO POWER SAWS
SEE PAGE 46 AND 47 FOR LOCATIONS ON MACHINE
Item No. 653PC-E Item No. 653PC-SP
5
13. Make sure saw guide bar with saw guard is in its lowest position. Close head and base doors.
14. Push start button and check for proper phasing of motor. Blade should be travelling down through the guide.
15. Watch for proper tracking of blade. Back of blade should be centered in hole in saw guide in stationary bar
(Part No. S119A). Push stop button to stop machine.
16. Check placement of all warning labels, wall chart and Manual. Machine is ready for trained operators to
process product.
17. Contact your local Distributor or BIRO directly if you have any questions or problems with the installation
or operation of this machine.
Item No.
708
Item No.
710
Item No.
16716

6
OPERATION
SHARP MOVING BAND TYPE SAW BLADE
TO AVOID SERIOUS PERSONAL INJURY
ONLY Properly Trained Personnel Should Use This Equipment.
ALWAYS Keep Hands Clear of Band Type Saw Blade and Other Moving Parts.
DO NOT Tamper With, Bypass, Alter, or Modify this Equipment in Any Way or Form.
NEVER Operate with Saw Guard on Saw Guide Bar in the Raised Position or the Saw Guard
Removed from the Saw Guide Bar.
ALWAYS Adjust the Saw Guide Bar with Saw Guard to Within ½” of Product to be Cut.
ALWAYS Use Safety End Cut Pusher Plate for Smaller Products or The Last Cuts of Product.
DO NOT Wear Gloves While Operating.
ALWAYS Turn Off, Unplug from Power Source and Perform Lockout/Tag Out Procedures Before
Cleaning, Servicing or When Not in Use.
NEVER Leave Machine Unattended While the Saw is Running.
NEVER Operate Without All Warning Labels Properly Afxed to Machine.
A. TO PROCESS PRODUCT
1. Before starting power saw, adjust saw guide bar with saw guard to within ½”(13 mm) of product to
be cut.
DO NOT WEAR GLOVES WHILE OPERATING
E
R
G
N
A
D

7
NEVER REACH OR GRAB FOR PRODUCT IN FRONT OF
MOVING BAND TYPE SAW BLADE
2. Make sure all doors are closed and locked.
5. Standing in front of the power saw, place product on the meat carriage. Pay attention to position of your
hands. Keep hands clear of moving band type saw blade. Leaning lightly against the scalloped front edge
of meat carriage, hold the product rmly in right hand with product face ush against the meat gauge
plate. Move the meat carriage from right to left at a steady rate until fully past the saw blade. Use left
hand to remove and stack cut product, NEVER REACH IN FRONT OF BAND TYPE SAW BLADE.
On the return stroke, pull the product slightly toward you, away from the saw blade.
3. Adjust meat gauge plate forward to desired thickness of cut. “A”
4. Push start button and watch blade for proper tracking.
6. ALWAYS use the Safety End Cut Pusher Plate (Part No. 256P) for smaller products or the last cuts of
product. “C” The pusher plate is supplied as standard on all BIRO power saws.
7. When nished cutting, push stop button. Perform lockout/tagout procedure.

ITEM NUMBER 671
WALL CHART “BAND SAW SAFETY GUIDELINES”
ATTACH TO WALL IN VICINITY OF MACHINE IN EASY VIEW OF OPERATOR.
8

9
OPERATOR’S NOTES

10
CLEANING
CLEANING THE BIRO POWER SAW:
Disconnect electrical power to the machine before cleaning. Parts to be removed have been made accessible and
can be removed without tools. Notice in the drawing below that all parts are numbered. Each part should be
removed for cleaning in the numbered sequence shown. To ensure cleaner cuts, keep the parts on the cleaning
system in good condition. Parts on the cleaning system which should be checked weekly, and changed as
required are as follows: Wheel Cleaners (Part No. 179), Saw Cleaners (Part No. 131), Saw Guide in Stationary
Bar (Part No. S119A), Upper Saw Guide (Part No. 602B), Lower Blade Back-Up Guide (Part No. 605), and
Nylon Filler (Part No. 177).
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tagout Procedure to This Machine
BEFORE Cleaning or Servicing.
ONLY Use Recommended Cleaning Equipment, Materials and Procedures.
ALWAYS Thoroughly Clean Equipment at Least Daily.
NEVER Spray Water or Other Liquid Substances Directly at Motor, Power Switch or any Other
Electrical Components.
4
1
8
5
9
10
26
7
11
3 Saw Blade
SHARP MOVING BAND TYPE SAW BLADE
TO AVOID SERIOUS PERSONAL INJURY

11
MAINTENANCE
ALWAYS Turn Off, Unplug From Power Source and Perform Lockout/Tag Out Procedure to This
Machine BEFORE Cleaning or Servicing.
NEVER Touch This Machine Without Training and Authorization By Your Supervisor.
ALWAYS Keep Hands Clear of Band Type Saw Blade and Other Moving Parts.
NEVER Bypass, Alter, or Modify This Equipment in Any Way From It’s Original Condition.
USE ONLY GENUINE BIRO Parts and Accessories Properly Installed.
PROMPTLY REPLACE Any Worn or Illegible Warning Labels.
SHARP MOVING BAND TYPE SAW BLADE
TO AVOID SERIOUS PERSONAL INJURY
1. Machine should be generally inspected every time it is cleaned (at least daily) to ensure that it is in good
condition and has not been damaged or tampered with.
a. SAW WHEELS: Clean outer diameter grooves daily. Check for cracks, gouges or wear on the ange and grooves.
A. GENERAL
DO NOT IMMERSE UPPER WHEEL ASSEMBLY IN WATER
b. WHEEL CLEANER ASSEMBLIES: Check condition of ber cleaner, change every four (4) weeks.
c. REMOVABLE FINGER LIFT ASSEMBLY: Check condition of saw guard, make sure mounting bolts are tight
and the “DANGER EXPOSED BLADE” decal is afxed and legible. Check condition of upper saw guide (Part No.
602B), replace every six (6) months. Check adjustment of upper saw guide. Should be 1/32” between back of blade
and saw guide carbide.
NEVER USE THIS MACHINE WITHOUT PROPERLY INSTALLED
AND FUNCTIONING SAW GUIDE BAR AND SAW GUARD
d. SAW GUIDE BAR: Check condition of bar for coating peeling and wear, replace as necessary. Check saw guide
bar spring for proper tension. The spring should hold the bar in any desired position in its travel. Replace saw guide
bar spring (Part No. 193) as necessary using instructions below.
1. Remove the nger lift fastener knob and the nger lift assembly.
2. Remove the nger lift fastener stud.
3. Push the saw guide bar up and out of the top of the head structure.
4. Remove the saw guide bar spring.
5. Clean and lubricate the babbitt pocket area (the square indented area that seats
the saw guide bar spring).
6. Lower the new saw guide bar spring through the top of the babbitt pocket area
and guide the spring into position with a standard screwdriver.
(NOTE: drawing)
7. While holding the saw guide bar spring in position, re-enter the saw guide bar
from the top compressing the saw guide bar spring slightly until the saw guide
bar slides past the spring.
8. Replace the nger lift fastener stud, the nger lift assembly and the nger lift
fastener knob.
9. Test by making several adjustments.

12
e. STATIONARY BAR ASSEMBLY: Check condition of nylon ller (Part No. 177), change every four (4) weeks.
Check condition of saw guide (Part No. S119A), check tracking of blade through guide, back of blade should be
centered in hole, replace every six (6) months. Check condition of lower blade back-up guide (Part No. S608).
Check condition of back-up guide, should have 1/32” gap between back of blade and saw guide carbide.
Replace every six (6) months.
f. SAW CLEANERS: Check condition of blade cleaners, replace every four (4) weeks.
i. MEAT GAUGE ASSEMBLY: Check free movement of meat gauge plate on gear rack. Gear rack to be kept
lubricated at all times with light food grade oil. Check operation of release handle. Check that worm gear engages
properly with gear rack. Check tension of release handle spring, replace as necessary.
j. MEAT CARRIAGE ASSEMBLY: Check free movement through full range of travel. Check side to side for
excessive clearance, adjust as necessary. Check condition of and grease bearings, replace as necessary. Check
condition of thumb guard, replace as necessary.
k. SAFETY ITEMS: Safety end cut pusher plate is with machine and accessible. All warning labels are present,
properly afxed and legible. Model and Serial Number plate is properly afxed and legible. Wall poster within
operators view from machine. Manual accessible to operator.
g. RATCHET ASSEMBLY: Check for smooth operation through full range of travel. Check condition of trigger
spring, replace as necessary.
h. SLIDE GIBS: Check that head structure moves freely up and down. Check for side to side and front to rear
tolerance, adjust as required. Grease every four (4) weeks.
B. LUBRICATION:
1. UPPER WHEEL BEARINGS: Grease every
four (4) months. Change grease every twelve (12)
months. (See instructions at right.)
2. LOWER BEARING HOUSING: Grease
every four (4) months. Change grease every
twelve (12) months.
4. MEAT CARRIAGE BEARINGS: Grease
every four (4) weeks.
5. SAW GUIDE BAR: Oil daily with food
machine oil.
6. MEAT GAUGE GEAR RACK: Oil daily
with food machine oil.
When lubricating the upper wheel bearing it is important that the three hex head
screws securing the upper wheel hub cap be loosened slightly before attempting
to pump grease into the grease tting. Loosening the screws allows for an escape
of old broken down grease and air from the bearing cavity. Failure to loosen the
screws before greasing the upper bearings can cause the upper shaft seal to be
dislodged from the upper wheel allowing grease to escape and moisture to get into
the cavity. When nished greasing the bearings, retighten the three screws. Take
care to also clean off any grease that was pushed out of the cavity during greasing.
7. MOTOR BEARINGS: Bearing grease will lose its lubricating ability over time, not suddenly. The lubricating
ability of a grease (over time) depends primarily on the type of grease, the size of the bearing, the speed at which
the bearing operates and the severity of the operating conditions. Good results can be obtained if the following
recommendations are used in your maintenance program.
A high grade ball or roller bearing grease should be used. Recommended grease for standard service conditions is
Polyrex EM (Exxon Mobil).
Equivalent and compatible greases include: Texaco Polystar, Rykon Premium #2, Pennzoil Pen 2 Lube, and
Chevron SRI.
Recommended lubrication intervals is every 12 months with the equivalent of two (2) teaspoons of grease.
If motor does not have zerk ttings, the motor bearings are sealed for life.
USE BIRO No. 374 GREASE FOR RE-GREASING
SEE INSTRUCTIONS BELOW
3. SLIDE GIBS: Grease every four (4) weeks.

13
S/N 27958 ON
TO S/N 27958
1. For tightening motor V-belt on rigid base plate, remove
appropriate quantity of shims (Part No. 324A) under
the motor until the desired total ex of the V-belt is
approximately ½”.
1. For tightening motor V-belt on oating adjustable motor
mounting plates (Part No. 16015-10 or 16015-11), loosen
the upper wing nuts (Part No. 16015-3). Then loosen the
bottom wing nuts (Part No. 16015-3) which are located
under the mounting plate. This enables the motor
mounting plate to drop to the desired belt tension.
Re-tighten the upper wing nuts evenly so that the motor
stays horizontal. Do not tighten belt to extremes. This will
cause undue pressure on and premature failure of the
motor bearings.
ADJUSTMENTS
C. MOTOR ADJUSTMENT:
Starting with Serial Number 27958 three (3) phase Model 3334’s will no longer be equipped with an
adjustable motor base plate, Part No. 16015-10 and 16015-11. The motor will be bolted to the bottom of the
base structure and V-belt tension adjusted utilizing shims.
This change has evolved as a result of the market demand for higher blade speeds. The revised mounting
procedure will insure a more rigid motor installation creating positive belt alignment and minimizing machine
vibration.
The base bottom has been redesigned to accept the frame sizes of the current 3 phase motors. Units prior to
Serial Number 27958 can be retrotted by ordering Part No. 16015-12 motor base plate and template (at),
and 36 pieces Part No. 324A motor shims.
C. SAW GUIDE BAR AND SAW GUARD:
The factory recommends that when service is performed on any BIRO SAW the servicing agency be sure
that the BIRO SAW is equipped with the most current safety features available.
In September 1969 the Model 3334 began production. The Model 3334 was rst equipped with a 19” saw
guide bar until March 1973 when the length was extended to 23”. In June 1977, the bar was shortened to 22”
and is used in current production.
The same saw guard (Part No. 255) on saw guide bar used on the Models 33 and 34 was carried over to the
Model 3334 and used in production until June 1975.
Part No. 663 Saw Guard on saw guide bar replaced Part No. 255 in June 1976 starting with Serial No.
12242. At the same time, the Part No. 661 Guard on head Door introduced in 1974 was replaced by Part No.
661-1 Guard on Head Door. Both Part No. 663 and 661-1-DECA are current production today.
The factory recommends that all Model 3334’s prior to Serial No. 12242 be updated by installing the
current SAW GUIDE BAR ASSEMBLY (Part No. A116-22) and SAW GUARD ON HEAD DOOR
(Part No. 661-1-DECA).

14
NEW
GUARD
15/16
7/8
KEEP
PARALLEL
Existing
Standard
Guard to Slide
Up & Inside
New Guard
MODEL 33, 34, & 3334 GUARD ON HEAD DOOR
Instructions for Attaching New Guard For Use
With Extended Saw Guide Bar
-Remove head door and lay inside up, placing new
guard inside door face and flange as shown in
diagram.
-Drill upper hole first, clamp guard tight against
inside of door.
-Then drill lower flange hole, using hole in guard
as a locator for the lower bolt.
-NOTICE: Care must be taken to position edges
parallel so that the old standard guard will slide
up inside the new guard.
1/4” Nut & Lock Washer,
Outside
DRILL THIS HOLE 1st 9/32 DIAMETER
Attach with bolt, lock washer & nut
to door, INSIDE
THEN
DRILL THIS HOLE 2nd 9/32 DIAMETER
THROUGH FLANGE
1/4” Nut & Lock
Washer, INSIDE
Inside Head Door
Flange

15
LONGER SAW GUARD KIT
Item No. 663K
This longer guard is for replacement on existing saws. Install the new guard
with the ¼” diameter screws supplied with the Saw Guard Kit, Item No. 663K.
NEW
OLD

16
LONGER SAW GUARD KIT
Item No. 16662K
This longer guard is for replacement on existing saws. Install the new guard
with the ¼” diameter screws supplied with the Saw Guard Kit, Item No. 16662K.
NEW
OLD

17
BASE DOOR HINGE SYSTEM
The Base Door Hinge System on the Model 3334 Series has been changed from
an internal “plate and pin” system to an external “barrel and pin” system.
Effective Serial Numbers:
Old Style New Style
Hinged Base Door with Internal
Hinge Plates, #S16217R
Before Serial No. 34386, and
Serial Numbers 34442-34471
Hinged Base Door with External
Hinge Plates, #S16217R-2
Serial Numbers 34386-34441
and Serial Numbers 34472 on