woodmizer Sawmill LT20 AC MH Series Manual instruction

Wood-Mizer® Sawmill
Safety, Setup, Operation
& Maintenance Manual
LT20 Series AC MH rev. B2.04
Safety is our #1 concern! Read and understand all
safety information and instructions before operating,
setting up or maintaining this machine.
April 2003
Form #614
!

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]. From the continental U.S., call our toll-free Parts hotline at
1-800-448-7881. Please have the vehicle identification number and your customer num-
ber 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]. From the continental U.S., call us toll-free at 1-800-525-8100. 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 partic-
ular 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 fig-
ure below for VIN locations. See the chart for VIN description.
V.I.N. LOCATIONS.
456 A 4 24 1 X S N A F9 017 F9 .01
V.I.N. DESCRIPTION
Company Identification Number
456=Wood-Mizer Indiana
Weight Class; A=Under 3,000 lbs B=3,001-4,000 lbs
C=4,001-5000 lbs
Product No.; 1=LT15, 2=LT20, 4=LT40 Series,
7=LT70 Series
Length of the Trailer;
20=20 Ft., 24=24’, 35=35’
Number of axles on the trailer
Year of Manufacture;
Y=2001, Z=2002, A=2003, B=2004, C=2005, D=2006
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.
E15
Configuration
Engine/Motor

Table of Contents Section-Page
Table of Contents 25doc092506 5
SECTION 1 SAFETY & GENERAL INFORMATION 1-1
1.1 Blade Handling.......................................................................................................... 1-2
1.2 Sawmill Setup............................................................................................................ 1-3
1.3 Sawmill Operation..................................................................................................... 1-4
1.4 Sawmill Maintenance ................................................................................................ 1-6
1.5 Belt Sizes ...................................................................................................................1-7
1.6 Blade Sizes ................................................................................................................ 1-7
1.7 Cutting Capacity........................................................................................................ 1-8
1.8 Engine/Motor Specifications ..................................................................................... 1-9
1.9 Overall Dimensions ................................................................................................. 1-10
1.10 Chains ......................................................................................................................1-10
1.11 Sawdust Extractor Specifications ............................................................................ 1-11
1.12 Components............................................................................................................. 1-12
1.13 LT20 Hydraulic Schematic (sawmills with optional manual hydraulic loader)...... 1-13
1.14 LT20 Hydraulic Components .................................................................................. 1-14
1.15 LT20 M Hydraulic Hoses........................................................................................ 1-14
SECTION 2 SETUP & OPERATION 2-1
2.1 Stationary Sawmill Setup .......................................................................................... 2-1
2.2 Portable Sawmill Setup ............................................................................................. 2-4
2.3 Middle Track Cover .................................................................................................. 2-6
2.4 Replacing The Blade ................................................................................................. 2-7
2.5 Tensioning The Blade................................................................................................ 2-8
2.6 Tracking The Blade ................................................................................................... 2-9
2.7 Starting The Motor .................................................................................................. 2-11
2.8 Loading, Turning, And Clamping Logs .................................................................. 2-12
2.9 Up/Down Operation ................................................................................................ 2-15
2.10 Blade Guide Arm Operation.................................................................................... 2-16
2.11 Power Feed Operation ............................................................................................. 2-17
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
2.17 Manual Toe Board................................................................................................... 2-27

Table of Contents Section-Page
6 25doc092506 Table of Contents
SECTION 3 MAINTENANCE 3-1
3.1 Wear Life................................................................................................................... 3-1
3.2 Blade Guides ............................................................................................................. 3-2
3.3 Sawdust Removal ...................................................................................................... 3-2
3.4 Carriage Track, Wiper & Scrapers ............................................................................ 3-3
3.5 Vertical Mast Rails .................................................................................................... 3-4
3.6 Miscellaneous ............................................................................................................ 3-5
3.7 Blade Tensioner......................................................................................................... 3-6
3.8 Blade Wheel Belts ..................................................................................................... 3-6
3.9 Drive Belt Adjustment .............................................................................................. 3-7
3.10 Up/Down System....................................................................................................... 3-9
3.11 Power Feed System ................................................................................................. 3-11
SECTION 4 TROUBLESHOOTING GUIDE 4-1
4.1 Sawing Problems ....................................................................................................... 4-1
4.2 Electrical Problems.................................................................................................... 4-3
4.3 Power Feed Problems ................................................................................................ 4-5
4.4 Hydraulic Problems ................................................................................................... 4-7
4.5 Engine/Motor and Drive Pulleys Alignment........................................................... 4-11
SECTION 5 SAWMILL ALIGNMENT 5-1
5.1 Pre-Alignment Procedures......................................................................................... 5-1
5.2 Frame Setup............................................................................................................... 5-2
5.3 Blade Installation And Alignment............................................................................. 5-2
5.4 Blade Wheel Alignment ............................................................................................ 5-6
5.5 Adjusting The Lower Track Rollers........................................................................ 5-11
5.6 Adjusting Bed Rails To The Blade.......................................................................... 5-14
5.7 Blade Guide Arm Vertical Adjustment ................................................................... 5-16
5.8 Carriage Backlash Removal .................................................................................... 5-18
5.9 Blade Guide Rope Adjustment................................................................................ 5-20
5.10 Blade Guide Arm Horizontal Adjustment............................................................... 5-21
5.11 Aligning the Blade Guides ...................................................................................... 5-23
5.12 Blade Deflection...................................................................................................... 5-24
5.13 Blade Guide Vertical Tilt Adjustment..................................................................... 5-25
5.14 Blade Guide Spacing ............................................................................................... 5-27
5.15 Horizontal Tilt Adjustment...................................................................................... 5-28
5.16 Horizontal Adjustment of Side Supports ............................................................ 5-29
5.17 Vertical Adjustment of Side Supports................................................................. 5-30
5.18 Saw Head Tilt .......................................................................................................... 5-31
5.19 Blade Height Scale Adjustment............................................................................... 5-33

Safety & General Information
Safety & General Information 25doc092506 1-1
1
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

Safety & General Information
Blade Handling
1
1-2 25doc092506 Safety & General Information
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.
WARNING! Do not spin the blade wheels by hand.
Spinning the blade wheels by hand may result in serious
injury.

Safety & General Information
Sawmill Setup
Safety & General Information 25doc092506 1-3
1
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.

Safety & General Information
Sawmill Operation
1
1-4 25doc092506 Safety & General Information
1.3 Sawmill Operation
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 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.

Safety & General Information
Sawmill Operation
Safety & General Information 25doc092506 1-5
1
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. 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.

Safety & General Information
Sawmill Maintenance
1
1-6 25doc092506 Safety & General Information
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 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
Belt Sizes
Safety & General Information 25doc092506 1-7
1
1.5 Belt Sizes
See Table 1-1. Belt sizes for the LT20 Series sawmill are shown.
1.6 Blade Sizes
See Table 1-2. 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 should determine which blade you choose for optimum
performance.
See The Blade Handbook for blade hook angle, tooth height, and tooth set
specifications.
Description Belt Size Wood-Mizer
Part #
Motor Drive Belt E11 & E15 1
1 E11 motor uses one, but E15 motor uses two BX81 belts.
BX81 014819
Engine Drive Belt D22 & G18 2BX84 092697
Blade Pulley Belts B57 2
2 To insure proper blade tracking, use Goodyear, Dayco Super II, or
Browning belts only.
P04185
TABLE 1-1
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

Safety & General Information
Cutting Capacity
1
1-8 25doc092506 Safety & General Information
1.7 Cutting Capacity
See Table 1-3. The log size capacities of the LT20 series sawmill are listed below.
See Table 1-4. 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.
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 1-3
Model Linear Blade Speed Maximum Cutting Speed
LT20 S/M G15 --- 5.2 m/min.
TABLE 1-4

Safety & General Information
Engine/Motor Specifications
Safety & General Information 25doc092506 1-9
1
1.8 Engine/Motor Specifications
See Table 1-5. The power options available for the LT20 Series sawmill are listed below.
See Table 1-6. The noise levels of the Wood-Mizer sawmills are listed below.
Engine/Motor Type Manufacturer Model No. Power Other Specifications
15HP Gasoline Kohler PA44501 15 HP ---
11HP Electric Tamel SA,
Poland
Sg 132M-2PE 7.5 kW 14.7 A, 2950 RPM
13HP Gasoline Kohler 13 HP
15HP Electric Tamel 11 kW 2800 RPM
17HP Diesel Kubota 17 HP
22HP Diesel Kubota 22 HP 3600 RPM
18HP Gasoline Kohler 18 HP
TABLE 1-5
Idle Engaged
Sawmill Equipped With Gas Engine 95 dB (A) 98 dB (A)
Sawmill Equipped With Electric Motor 77.1 dB (A) 80.8 dB (A)
TABLE 1-6

Safety & General Information
Overall Dimensions
1
1-10 25doc092506 Safety & General Information
1.9 Overall Dimensions
See Table 1-7. The overall dimensions of the LT20 series sawmill are listed below.
1.10 Chains
See Table 1-8. The load capacity of the chains is listed below.
Model Length 1
1 Length from hitch to chain bracket.
Width 2
2 Width from fender to fender.
Width
Operating Position
(Loading Arms
Raised)
Height 3
3 Height from ground to mast. Placing head in maximum position will add to total height.
Weight Weight
w/Trailer
LT20SG15
w/Trailer
6.7 m 2 m 3.5 m 2,5 m 923 kg 1068 kg
LT20MG15 8 m 2 m 3.5 m 2,5 m 1013 kg 1158 kg
TABLE 1-7
Load Capacity According to ISO No 08A-1
Up/Down Chain 2270KG
TABLE 1-8

Safety & General Information
Sawdust Extractor Specifications
Safety & General Information 25doc092506 1-11
1
1.11 Sawdust Extractor Specifications
See Table 1-9. The dust extractor specifications are given below.
Maximum Capacity 2300 m3/h
Collector Inlet Diameters (in
front of fan)
2x140 MM.
Motor Power 3 kwh
Number of Sacks for Waste 2 pcs
Total Capacity of Sacks 0,25 m3
Weight 110 kg
Conveying Speed When 10 m
Long Hose Is Used
19 m/s
TABLE 1-9

Safety & General Information
Components
1
1-12 25doc092506 Safety & General Information
1.12 Components
See Figure 1-1. The major components of the Wood-Mazer LT20 Series are shown
below.
FIG. 1-1

Safety & General Information
LT20 Hydraulic Schematic (sawmills with optional manual hydraulic loader)
Safety & General Information 25doc092506 1-13
1
1.13 LT20 Hydraulic Schematic (sawmills with optional manual
hydraulic loader)
FIG. 1-2 HYDRAULIC SCHEMATIC.
FIG. 1-3 HYDRAULIC LAYOUT DIAGRAM.
Log Loader
Manual Hydraulic
Pump
P1
C1 C2
H2
H1
H3
T1

Safety & General Information
LT20 Hydraulic Components
1
1-14 25doc092506 Safety & General Information
1.14 LT20 Hydraulic Components
1.15 LT20 M Hydraulic Hoses
ID Mfg. Part No. Manufacturer Wood-Mizer
Part.#
Description
C1, C2 - - 088680 Cylinder, CJ-S95-16-70/32/203
Hydraulic
P1 - - 090309 PUMP, PAM 014 2500 3L MANUAL
T1 - - 015487 T - connector 3/8
TABLE 1-9
ID Color Code LENGTH
"A"
Application Wood-Mizer
Part No.
H1 - 14" Log Turner Cylinder Base 091843
H2 - 27" Log Turner Cylinder Top 091844
H3 - 27" Log Turner Cylinder Top 091845
TABLE 1-9