woodmizer LT20 Series Manual instruction

Table of Contents Section-Page
Table of Contents SW-07doc0527111

Wood-Mizer® Sawmill
Safety, Setup, Operation
& Maintenance Manual
LT20 Series DC MH rev. D6.01
Safety is our #1 concern! Read and understand all
safety information and instructions before operating,
setting up or maintaining this machine.
April 2003 Form #627
!
This is the original language
for the manual.

This manual is to replace or to be used with all previous information received on the
Wood-Mizer®* sawmill. All future mailings will be an addition to or a revision of individual
sections of this manual as we obtain new information.
The information and instructions given in this manual do not amend or extend the limited
warranties for the equipment given at the time of purchase.
If You Need To Order Parts...
From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland
at [phone]. Please have the vehicle identification number and your customer
number ready when you call. Wood-Mizer will accept these methods of payment:
• Visa, Mastercard, or Select Purchase
•COD
• Prepayment
• Net 15 (with approved credit)
Be aware that shipping and handling charges may apply. Handling charges are based on
size and quantity of order. In most cases, items will ship on the day they are ordered.
Second Day and Next Day shipping are available at additional cost.
If You Need Service...
From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland
at [phone]. Ask to speak with a Customer Service Representative. Please have
your vehicle identification number and your customer number ready when you call. The
Service Representative can help you with questions about alignment of your mill, blade
sharpening, or cutting a particular species of wood. He also can schedule you for a
service call.
Office Hours: All times are Eastern Standard Time. Please remember that Indiana does
not go on Daylight Savings Time in the summer.
IMPORTANT! Read the entire Operator's Manual before
operating the sawmill. Take notice of all safety warnings
throughout this manual and those posted on the machine.
Keep this manual with this machine at all times, regardless
of ownership.
*Wood-Mizer®is a registered trademark of Wood-Mizer Products, Inc.
Country Monday - Friday Saturday Sunday
U.S., Indiana 8 a.m. to 5 p.m. 8 a.m. to 4 p.m. Closed
Poland 8 a.m. to 4:30 p.m. 8 a.m. to 1 p.m. Closed
!

Sawmill and Customer Identification
Each Wood-Mizer sawmill has a 17-digit Vehicle Identification Number (VIN). See the
figure below for VIN locations. See the chart for VIN description.
V.I.N. LOCATIONS.
456 A 4 24 1 X H P A F9 017 F9 .01
V.I.N. DESCRIPTION
Company Identification Number
456=Wood-Mizer Indiana
Weight Class; A=Under 1361 kg, B=1361-1814 kg,
C=1814-2268 kg, D=2269-3000kg
Product No.; 1=LT10/15, 2=LT20 Series,
4=LT40 Series, 7=LT70 Series
Length of the Trailer;
20= 20’ (6 m), 24=24’ (7 m), 35=35’ (11 m)
Number of axles on the trailer
Year of Manufacture;
G=2009, H=2010, J=2011, K=2012, L=2013, M=2014
State of Manufacture
N=Indiana, P=Poland
Month of Manufacture
A=January, B=February, C=March, etc...
Revision Level
Sequence Number
Ranging from 000-999
End of 17-Digit VIN
Revision Level (Repeated)
Two-Digit Minor Revision Level
Check Digit
Add all the number and divide by 11

Each sawmill is also identified with a model number which includes the base model and
the engine/motor configuration. See the figure for a description of the model number.
When you pick up your mill, you will receive a customer number. Both the VIN and your
customer number expedite our service to you. Please write these numbers below so you
have quick, easy access to them.
MODEL NUMBER DESCRIPTION.
Customer No. Model No. V.I.N. Revision
LT20
Basic Sawmill I.D. D22
Configuration
Engine/Motor

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SECTION 1 SAFETY & GENERAL INFORMATION 1-1
1.1 Blade Handling..........................................................................................................1-1
1.2 Sawmill Setup............................................................................................................1-2
1.3 Sawmill Operation.....................................................................................................1-2
1.4 Sawmill Maintenance................................................................................................1-4
1.5 Belt Sizes.................................................................................................................1-10
1.6 Blade Sizes .............................................................................................................. 1-10
1.7 Cutting Capacity......................................................................................................1-11
1.8 Engine/Motor Specifications...................................................................................1-12
1.9 Noise Level..............................................................................................................1-12
1.10 Overall Dimensions.................................................................................................1-13
1.11 Chains......................................................................................................................1-14
1.12 Sawdust Extractor Specifications............................................................................1-14
1.13 Components.............................................................................................................1-15
1.14 LT20 Hydraulic Schematic (sawmills with optional manual hydraulic loader)...... 1-16
1.15 Hydraulic Components, LT20 M ............................................................................1-17
1.16 Hydraulic Hoses, LT20 M.......................................................................................1-17
SECTION 2 SETUP & OPERATION 2-1
2.1 Sawmill Setup............................................................................................................2-1
2.2 Stationary Sawmill Setup..........................................................................................2-1
2.3 Portable Sawmill Setup .............................................................................................2-6
2.4 Middle Track Cover ..................................................................................................2-9
2.5 Replacing The Blade .................................................................................................2-9
2.6 Tensioning The Blade..............................................................................................2-10
2.7 Tracking The Blade.................................................................................................2-12
2.8 Loading, Turning, And Clamping Logs..................................................................2-13
2.9 Up/Down Operation ................................................................................................2-15
2.10 Blade Guide Arm Operation....................................................................................2-17
2.11 Power Feed Operation.............................................................................................2-18
2.12 Cutting The Log ......................................................................................................2-20
2.13 Edging......................................................................................................................2-21
2.14 Blade Height Scale.................................................................................................. 2-22
2.15 Water Lube Operation............................................................................................. 2-24
2.16 Preparing The Sawmill For Towing........................................................................2-25

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SECTION 3 MAINTENANCE 3-1
3.1 Wear Life...................................................................................................................3-1
3.2 Blade Guides .............................................................................................................3-1
3.3 Sawdust Removal......................................................................................................3-2
3.4 Carriage Track, Wiper & Scrapers............................................................................3-2
3.5 Vertical Mast Rails....................................................................................................3-3
3.6 Miscellaneous............................................................................................................3-4
3.7 Blade Tensioner.........................................................................................................3-4
3.8 Blade Wheel Belts.....................................................................................................3-5
3.9 Brake Pads Adjustment ( Gas / Diesel Sawmills Only )...........................................3-5
3.10 Drive Belt Adjustment ..............................................................................................3-6
3.11 Up/Down System.......................................................................................................3-9
3.12 Power Feed System .................................................................................................3-11
3.13 Safety Devices Inspection .......................................................................................3-14
SECTION 4 TROUBLESHOOTING GUIDE 2-1
4.1 Sawing Problems.......................................................................................................2-1
4.2 Electrical Problems....................................................................................................2-3
4.3 Power Feed Problems................................................................................................2-4
4.4 Hydraulic Problems...................................................................................................2-6
4.5 Engine/Motor and Drive Pulleys Alignment.............................................................2-9
SECTION 5 SAWMILL ALIGNMENT 3-1
5.1 Pre-Alignment Procedures......................................................................................... 3-1
5.2 Frame Setup...............................................................................................................3-2
5.3 Blade Installation And Alignment.............................................................................3-2
5.4 Blade Wheel Alignment............................................................................................3-5
5.5 Adjusting The Lower Track Rollers........................................................................3-10
5.6 Adjusting Bed Rails To The Blade..........................................................................3-12
5.7 Blade Guide Arm Vertical Adjustment...................................................................3-13
5.8 Blade Guide Arm Feed Chain Adjustment..............................................................3-14
5.9 Saw Head Backlash Removal..................................................................................3-17
5.10 Blade Guide Arm Horizontal Adjustment...............................................................3-19
5.11 Aligning the Blade Guides ......................................................................................3-20
5.12 Blade Deflection......................................................................................................3-22
5.13 Blade Guide Vertical Tilt Adjustment.....................................................................3-23
5.14 Blade Guide Spacing...............................................................................................3-25
5.15 Horizontal Tilt Adjustment......................................................................................3-26
5.16 Horizontal Adjustment of Side Supports............................................................3-27
5.17 Vertical Adjustment of Side Supports.................................................................3-28
5.18 Saw Head Tilt..........................................................................................................3-29
5.19 Blade Height Scale Adjustment............................................................................... 3-31

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Safety & General Information
Blade Handling
1
1-1 25doc052711 Safety & General Information
SECTION 1 SAFETY & GENERAL INFORMATION
This symbol calls your attention to instructions concerning your personal safety. Be sure to observe
and follow these instructions. This symbol accompanies a signal word. The word DANGER indicates
an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING suggests a potentially hazardous situation which, if not avoided, could result in death or
serious injury. CAUTION refers to potentially hazardous situations which, if not avoided, may result
in minor or moderate injury to persons or equipment. Read all safety instructions before operating
this equipment and observe all safety warnings!
Warning stripes are placed on areas where a single decal would be insufficient. To avoid serious
injury, keep out of the path of any equipment marked with warning stripes.
Read and observe all safety instructions before operating this equipment! Also read any additional
manufacturer’s manuals and observe any applicable safety instructions including dangers, warnings,
and cautions.
Always be sure that all safety decals are clean and readable. Replace all damaged safety decals to
prevent personal injury or damage to the equipment. Contact your local distributor, or call your
Customer Service Representative to order more decals.
IMPORTANT! It is always the owner's responsibility to comply with all applicable federal, state and
local laws, rules and regulations regarding the ownership, operation and towing of your Wood-Mizer
sawmill. All Wood-Mizer mill owners are encouraged to become thoroughly familiar with these
applicable laws and comply with them fully while using or towing the mill.
Always properly dispose of all sawing by-products, including sawdust and other debris, coolant, oil,
fuel, oil filters and fuel filters.
Safety instructions are listed in this section by the following operations:
Blade Handling
Sawmill Setup
Sawmill Operation
Sawmill Maintenance
1.1 Blade Handling
DANGER! Always disengage the blade and shut off the sawmill engine
before changing the blade. Failure to do so will result in serious injury.
WARNING! Always wear gloves and eye protection when handling
bandsaw blades. Changing blades is safest when done by one person!
Keep all other persons away from area when coiling, carrying or
changing a blade. Failure to do so may result in serious injury.

Safety & General Information
Sawmill Setup
Safety & General Information 25doc052711 1-2
1
WARNING! Do not spin the blade wheels by hand. Spinning the blade
wheels by hand may result in serious injury.
1.2 Sawmill Setup
WARNING! Chock the trailer wheels to prevent movement before
unhitching it from the towing vehicle. Failure to do so may result in
serious injury or death.
WARNING! Failure to put front outrigger down before moving cutting
head from the rest position may result in serious injury.
WARNING! Securely fasten the feet of a stationary sawmill to the floor
before operating the sawmill. Failure to do so may result in serious
injury or death.
WARNING! Always make sure the trailer is supporting the sawmill
frame when operating a sawmill with adjustable outriggers. Failure to
do so may result in serious injury or death. The adjustable outriggers
are intended to support the saw frame with assistance from the trailer.
WARNING! Do not set up the mill on ground with more than a 10
degree incline. If setup on an incline is necessary, put blocks under
one side of the mill or dig out areas for outrigger legs to keep mill level.
Setting up the mill on an incline could cause it to tip over, resulting in
serious personal injury.
CAUTION! Changes in temperature could cause increased pressure in
the blade tensioner and loss of fluid from the gauge. Release the blade
tension when the mill is not in use to avoid damage to the tensioner.
1.3 Sawmill Operation
IMPORTANT! The sawmill is intended for sawing wood only. See
Section 1.7 for log size capacities of the machine.
IMPORTANT! The operator of the sawmill should get adequate train-
ing in the operation and adjustment of the machine.
DANGER! Make sure all guards and covers are in place and secured
before operating or towing the sawmill. Failure to do so may result in
serious injury.
Be sure the blade housing and pulley covers are in place and secure.
Use the safety retainer pin and cable to fasten blade housing covers.
DANGER! Always keep hands away from moving bandsaw blade.
Failure to do so will result in serious injury.
DANGER! Stay clear of the area between the trailer axle and saw
!

Safety & General Information
Sawmill Operation
1
1-3 25doc052711 Safety & General Information
carriage. Failure to do so will result in serious injury.
DANGER! Keep all persons out of the path of moving equipment and
logs when operating sawmill or loading and turning logs. Failure to do
so will result in serious injury.
DANGER! Maintain a clean and clear path for all necessary movement
around the mill and lumber stacking areas. Failure to do so will result in
serious injury.
DANGER! Always be sure the blade is disengaged and all persons are
out of the path of the blade before starting the engine or motor. Failure
to do so will result in serious injury.
DANGER! Keep all persons out of the path of returning boards. Failure
to do so will result in serious injury.
WARNING! Always disengage the clutch/brake mechanism whenever
the sawmill is not cutting. Failure to do so may result in serious injury.
WARNING! Always wear eye, ear, respiration, and foot protection
when operating the sawmill. Failure to do so may result in serious
injury.
WARNING! Secure all loose clothing and jewelry before operating the
sawmill. Failure to do so may result in serious injury or death.
WARNING! Always make sure log is clamped securely before sawing.
Failure to do so may result in serious injury or death.
WARNING! Use ONLY water with the water lube accessory. Never use
flammable fuels or liquids. If these types of liquids are necessary to
clean the blade, remove it and clean with a rag. Failure to do so may
result in serious injury or death.
CAUTION! Be sure the pivot rails, turning arm, clamp, and toe boards
are below bed level before loading a log onto the bed. Failure to do so
may result in machine damage or cause misalignment.
CAUTION! Before loading a log, be sure the cutting head is moved far
enough forward so the log does not hit it. Failure to do so may result in
machine damage.
CAUTION! Do not try to force the saw head beyond its upper and
lower travel limits. Damage to the up/down system may result.
CAUTION! Do not use the blade guide arm knob to move the carriage
head forward and backward. Damage to the blade guide arm may
result.
CAUTION! Be sure to stop the blade when returning the carriage.

Safety & General Information
Sawmill Maintenance
Safety & General Information 25doc052711 1-4
1
This will not only prevent the blade from being pulled off and ruined by
a wood sliver, but also will increase the life of the blade.
CAUTION! The saw head will hit the spring-loaded ramp stops when
adjusted for low cuts. Remove the loading ramps before sawing to
prevent damage to the saw head and/or blade guide arm.
CAUTION! Never clean the blade or the blade wheels with a brush or
a scraper during sawmill operation.
CAUTION! Before installation of the blade, inspect it for damage and
cracks. Use only properly sharpened blades. Always handle the blade
with extreme caution. Use suitable carrier equipment for transporting
the blades.
CAUTION! Always wear gloves when handling the blade. Never grab
the blade with bare hands!
CAUTION! If the blade breaks during sawmill operation, push the
EMERGENCY STOP button to stop the blade motor and wait 10
seconds before you open the blade housing cover.
CAUTION! The sawmill’s work-stand should be equipped with a 4 kg
or bigger dry powder extinguisher.
CAUTION! If at any time you need to immediately stop the blade
engine, press the emergency stop button located on the control box.
1.4 Sawmill Maintenance
WARNING! Always secure the cutting head with a chain or a brace
before adjusting the up/down chain. The cutting head may fall, causing
severe injury or death.
WARNING! Always secure the cutting head with a chain or a brace
before adjusting the mast pads. The cutting head may fall, causing
severe injury or death.
CAUTION! Reinstall the track wiper so that it lightly touches the track
rail. If the wiper presses too firmly against the rail, it can cause the
power feed to bind.
CAUTION! Never use grease on the mast rails as it will collect
sawdust.
CAUTION! Do not use chain lube. It causes sawdust buildup in chain
links.
CAUTION! Due to variations in the vertical mast, the pad spacing may
vary throughout the travel of the saw head. Check the pad spacing at
the top and bottom ends of the mast only. Pads adjusted too tight will

Safety & General Information
Sawmill Maintenance
1
1-5 25doc052711 Safety & General Information
cause premature up/down motor failure.
CAUTION! It is important that the lower stop bolts are properly
adjusted to secure the carriage on the track rail. Failure to properly
adjust the stop bolts can cause saw head damage, especially during
mill transportation.

Safety & General Information
Sawmill Maintenance
Safety & General Information 25doc052711 1-6
1
See Table 1-1. Pictogram decals used to warn and inform the user about danger in the LT20.
TABLE 1-1
Decal View W-M No. Description
096317 CAUTION! Read thoroughly the manual
before operating the machine. Observe all
safety instructions and rules when
operating the sawmill.
099220 CAUTION! Close all guards and covers
before starting the machine.
099219 Blade tension. Turning the bolt clockwise
will increase the blade tension and turning
the bolt counterclockwise will decrease the
tension.
099220
099219
+

Safety & General Information
Sawmill Maintenance
1
1-7 25doc052711 Safety & General Information
099221 CAUTION! Keep all persons a safe
distance away from work area when
operating the machine.
098176 CAUTION! Keep away from debarker
blade!
096316 CAUTION! Do not open or close the
electric box when the switch is not in the
“0” position.
096319 CAUTION! Disconnect power supply
before opening the box.
TABLE 1-1
099221
098176

Safety & General Information
Sawmill Maintenance
Safety & General Information 25doc052711 1-8
1
099222 CAUTION! Sawdust outlet. Protect eyes!
099542 CAUTION! Trailer
086099 CAUTION! Hot elements, keep your
distance!
096321 Blade movement direction
S12004G CAUTION! Always wear safety goggles
when operating the sawmill!
TABLE 1-1
099542
086099

Safety & General Information
Sawmill Maintenance
1
1-9 25doc052711 Safety & General Information
S12005G CAUTION! Always wear protective ear
muffs when operating the sawmill!
501465 Caution! Wear foot protection when
operating the machine!
501467 Lubrication point
P11789 Aligning the blade on the wheels
092597 Setting the blade tension indicator
P85070 CE safety certification
TABLE 1-1
092597

Safety & General Information
Belt Sizes
Safety & General Information 25doc052711 1-10
1
1.5 Belt Sizes
See Table 1-2. Belt sizes for the LT20 Series sawmill are shown.
1.6 Blade Sizes
See Table 1-3. Wood-Mizer TRU•SHARP™ offers three types of blades to provide efficient sawing
for all models of sawmills. The engine/motor size of your sawmill and the type of wood you saw
099401 Russian safety certification
P85066 Blade positioning
S20097A 3600 RPM - Engine rotation direction
Description Belt Size Wood-Mizer
Part #
Motor Drive Belt E11 & E15 2BX81 014819-2
Engine Drive Belt D22, G25 2BX84 088110
Blade Pulley Belts B57 1
1 To insure proper blade tracking, use Goodyear, Dayco Super II, or
Browning belts only.
P04185
TABLE 1-2
TABLE 1-1
099401
P85066
3-4 mm
S20097A
3600 RPM

Safety & General Information
Cutting Capacity
1
1-11 25doc052711 Safety & General Information
should determine which blade you choose for optimum performance.
See The Blade Handbook for blade hook angle, tooth height, and tooth set specifications.
1.7 Cutting Capacity
See Table 1-4. The log size capacities of the LT20 series sawmill are listed below.
See Table 1-5. The performance capacity of the LT20 series sawmill is listed below. Peak cutting
rates are measured in 12” (30 cm) wide red oak and represent the capability of the sawmill only.
Rates based on using Tru-Sharp 1 1/4” x .042 blades.
Engine/Motor
Size
Recommended Blade Type
Softwood Medium
Hardwood Frozen Timber or Dense Hardwood
5 HP - 15 HP B275IH1030
B275IH741030
B375IH929 B375IH9291
16 HP or more B376IH1030
B376IH741030
B275IH1030
B275IH741030
B376IH1030
B376IH7410302
B375IH929 1
1 TRU•SHARP™”F” 9° blades use a 9/29 profile (9° hook angle and 29° back angle) and are designed to cut frozen
and/or extremely dense, hard-to-cut wood. Standard TRU•SHARP™ blades use a 10/30 profile.
Electric Motor B376IH1030
B376IH741030
B275IH1030
B275IH741030
B376IH1030
B376IH741030 2
2 Customer may choose preferred blade.
B375IH929 1
Max.
Diameter 1
1 Maximum log capacity for a basic mill is 2000 Kg.
Max.
Length 1
LT20 S 71 cm 5.1 m (16' 8")
LT20 M 71 cm 6.4 m (21')
LT20 L 71 cm 8,4m
TABLE 1-4
Model Linear Blade Speed Maximum Cutting Speed
LT20 S/M G15 --- 5.2 m/min
TABLE 1-5