woodmizer LT15 Guide

G15 Engine
Safety, Operation, Maintenance
& Parts Manual
LT15 rev. A1.01
Safety is our #1 concern! Read and understand
all safety information and instructions before oper-
ating, setting up or maintaining this machine.
Form #698
!

2 TOCdoc091818
SECTION 1 SAFETY & GENERAL INFORMATION 1-1
1.1 Refueling ...................................................................................................................1-1
1.2 Engine Operation....................................................................................................... 1-1
SECTION 2 OPERATION 2-1
2.1 Starting The Engine................................................................................................... 2-1
SECTION 3 MAINTENANCE 3-1
3.1 Air Filter & Pre-Cleaner............................................................................................ 3-1
3.2 Engine Oil & Filter.................................................................................................... 3-1
3.3 Air Cooling System ................................................................................................... 3-1
3.4 Fuel Filter .................................................................................................................. 3-2
3.5 Miscellaneous Maintenance ...................................................................................... 3-2
3.6 Drive Belt Adjustment............................................................................................... 3-2
3.7 Alternator Belt........................................................................................................... 3-4
3.8 RPM Adjustments ..................................................................................................... 3-6
SECTION 4 REPLACEMENT PARTS 4-1
4.1 How To Use The Parts List ....................................................................................... 4-1
4.2 Sample Assembly ...................................................................................................... 4-1
4.3 Engine Assembly ...................................................................................................... 4-2
4.4 Brake/Belt Tensioner Assembly ............................................................................ 4-4

Safety & General Information
Refueling
Safety & General Information G15G13doc091818 1-1
1
SECTION 1 SAFETY & GENERAL INFORMATION
IMPORTANT! This manual is provided as a supplement to the equipment
manufacturer’s manuals. This manual takes into account the specific use
of engines on the Wood-Mizer sawmill. Only safety, maintenance, and
operating procedures that are not provided by the manufacturer are sup-
plied in this manual. Refer to the manufacturer's manual before attempting
to operate this equipment.
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 moder-
ate injury to persons or equipment. Read all safety instructions before operating this equipment and
observe all safety warnings!
1.1 Refueling
WARNING! Store gasoline away from sawdust and other flammable mate-
rials. Failure to do so may result in serious injury.
1.2 Engine Operation
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.
WARNING! Do not for any reason adjust the engine drive belts or belt sup-
port bracket with the engine running. Doing so may result in serious injury.
WARNING! Remove the blade before performing any engine service. Fail-
ure to do so may result in serious injury.
WARNING! Always wear proper and necessary safety equipment when
performing service functions. Proper safety equipment includes eye pro-
tection, breathing protection, hand protection and foot protection.
IMPORTANT! Always dispose of coolant, oil, fuel, oil filters and fuel filters
in a responsible manner and in comformance with local, state and federal
regulations.

Operation
Starting The Engine
2
2-1 G15G13doc091818 Operation
SECTION 2 OPERATION
2.1 Starting The Engine
Engine Start
WARNING! Do not start the engine when the tensioner lever is in the
ENGAGED (up) position. Always be sure the blade is disengaged and all
persons are away from the sawmill before starting the engine.
1. Set and lock with the pin the tensioner lever in the ENGINE START position (middle possition).
See Figure 2-1.
FIG. 2-1
150215

Operation
Starting The Engine
Operation G15G13doc091818 2-2
2
2. Close the engine choke by moving the choke lever to the START position.
See Figure 2-2.
3. Turn the key to the START position.
See Figure 2-3.
FIG. 2-2
FIG. 2-3

Operation
Starting The Engine
2
2-3 G15G13doc091818 Operation
4. When the engine is started, release the tensioner lever to the IDLING position and slowly open the
choke by moving the choke lever to the OFF position.
See Figure 2-4.
5. To engage the blade, press and hold the green button on the control box and push the tensioner lever to
the ENGAGED (up) position.
See Figure 2-5.
Engine Shutoff
1. Disengage the tensioner lever to stop the blade (down position).
2. Let the engine run for 15 seconds without load and then turn the key to the OFF position.
FIG. 2-4
FIG. 2-5
150216
150217

Maintenance
Air Filter & Pre-Cleaner
Maintenance G15G13doc091818 3-1
3
SECTION 3 MAINTENANCE
IMPORTANT! This manual only provides information about additional pro-
cedures or procedures to be performed at different time intervals than
found in the engine manufacturer's manuals. Refer to the manufacturer's
manual for complete maintenance instructions.
WARNING! Remove the blade before performing any engine service. Fail-
ure to do so may result in serious injury.
This symbol identifies the interval (hours of operation) which each maintenance procedure should be
performed. "AR" signifies maintenance procedures which should be performed as required.
3.1 Air Filter & Pre-Cleaner
WARNING! Always wear proper and necessary safety equipment when
performing service functions. Proper safety equipment includes eye pro-
tection, breathing protection, hand protection and foot protection.
Service the pre-cleaner every four hours of operation. Service by gently shaking excess sawdust and
debris from the foam piece.
Clean the air filter (air cleaner element) and pre-cleaner (element wrapper) every eight hours of opera-
tion. See the engine manual for further instructions.
Replace the air filter (cleaner) every 200 hours of operation.
Replace the pre-cleaner (element wrapper) every 2000 hours of operation.
3.2 Engine Oil & Filter
Check the oil level every 8 hours of operation. Add oil as necessary. See the engine manual for oil vis-
cosity and grade recommendations.
IMPORTANT! During initial break-in, change the oil and the oil filter after
the first 50 hours and every 150-200 hours thereafter. Continue to check oil level
every 8 hours of operation and refill as necessary.
NOTE: Engine at factory is filled with 10W/40 Shell Helix HX7, semi-synthetic oil.
3.3 Air Cooling System
Wash the engine or brush off sawdust and debris every 50 hours of operation. Clean the grass screen,
cooling fins, and external surfaces. Remove any dust, dirt or oil. See engine manual for further instruc-
tions.
0
4
8
200
2000
8
150
50

Maintenance
Fuel Filter
3
3-2 G15G13doc091818 Maintenance
3.4 Fuel Filter
Replace the fuel filter every 100 hours of operation.
3.5 Miscellaneous Maintenance
Inspect the spark plugs every 100 hour of operation. Remove any deposits and adjust gap if necessary.
See engine manual for further information.
3.6 Drive Belt Adjustment
WARNING! Do not for any reason adjust the engine drive belts or belt
support bracket with the engine running. Doing so may result in serious
injury.
Check the drive belt tension after the first 20 hours, and every 50 hours thereafter.
The drive belt tension should be adjusted with the tensioner handle engaged (in the up position), by
moving the engine assembly on the engine mount plate. To make the adjustment, perform the following
steps:
1. Loosen the engine mounting bolts and the jam nuts.
2. Using the adjustment bolts, shown in the figure below, adjust the belt tension to approximately 11 mm
deflection with 7.2 kG of deflection force.
3. Tighten the jam nuts and the engine mounting bolts.
100
100
50

Maintenance
Drive Belt Adjustment
Maintenance G15G13doc091818 3-3
3
See Figure 3-1.
Periodically check all belts for wear. Replace any damaged or worn belts as needed.
FIG. 3-1
Jam Nut
Adjustment
Bolt
Adjustment
Bolt
Engine
Mounting
Bolts
AR

Maintenance
Alternator Belt
3
3-4 G15G13doc091818 Maintenance
3.7 Alternator Belt
The belt tension should be checked after the first 100 hours of operation, when the battery is not
charging properly or when the alternator belt is squealing. If the battery continues to not charge properly
or the belt continues to squeal after the initial belt adjustment, replace the belt.
1. Release the blade tension and remove the blade from the sawmill if necessary. Turn the key switch to
OFF (0) and remove the key.
2. Remove the drive belt cover and alternator cover.
See Figure 3-2.
3. Use a belt tension gauge to measure the belt tension. Place the gauge on the belt at the midpoint
between the two pulleys. If the belt tension is less than 3.0mm with 25N of deflection (See Fig.3-2),
tighten the belt as described below.
4. Loosen lower mounting bolt.
FIG. 3-2
AR
L
L/2 3,0mm
25N
A

Maintenance
Alternator Belt
Maintenance G15G13doc091818 3-5
3
See Figure 3-3.
5. Turn the belt tension adjustment nut clockwise to tighten the belt, counterclockwise to loosen the belt.
Adjust the bolt until the proper belt tension is achieved.
CAUTION! Do not overtighten the alternator belt. Damage to the alternator
will occur.
6. After the alternator belt has been tensioned, tighten the adjustment bolt jam nut. Tighten the upper and
lower pivots and replace the belt covers.
FIG. 3-3
Lower Alternator
Mounting Bolt
Belt Tension
Adjustment Bolt
with Nut

Maintenance
RPM Adjustments
3
3-6 G15G13doc091818 Maintenance
3.8 RPM Adjustments
WARNING! Remove the blade before performing any engine service. Fail-
ure to do so may result in serious injury.
Check the RPM with a tachometer after the first 20 hours of operation and every 200 hours thereafter.
High-end RPM should be 3650 (±100) RPM and low-end RPM should be 1200 (not to exceed 1500).
Before checking the RPM, make sure belt and brake strap tension are correct (See Sawmill Mainte-
nance).
1. Start the engine to measure the low-end RPM.
Make sure that the throttle linkage is not affecting the engine RPM while the clutch/brake handle is dis-
engaged. Make sure the cable is not bent or kinked. Refer to the engine manual to adjust the low-end
RPM.
2. Engage the clutch handle to throttle the engine and measure the high-end RPM. Readjust the throttle
linkage if necessary to increase or reduce the high-end engine speed.
See Figure 3-4. The engine should start to throttle as soon as you start moving the clutch handle down.
If the engine dies instead, restart the engine and adjust the throttle linkage as far as possible without
affecting low-end RPM. NOTE: A properly adjusted throttle will extend the cable spring 1/4" to 3/8" (6.4 -
9.5 mm) when running and have a slight amount of slack in the cable when idling.
200

Replacement Parts
How To Use The Parts List
Replacement Parts G15doc091818 4-1
4
SECTION 4 REPLACEMENT PARTS
4.1 How To Use The Parts List
Use the table of contents or the index to locate the assembly that contains the part you need.
Go to the appropriate section and locate the part in the illustration.
Use the number pointing to the part to locate the correct part number and description in the table.
Parts shown indented under another part are included with that part.
Parts marked with a diamond () are only available in the assembly listed above the part.
See the sample table below. Sample Part #A01111 includes part F02222-2 and subassembly A03333.
Subassembly A03333 includes part S04444-4 and subassembly K05555. The diamond () indicates
that S04444-4 is not available except in subassembly A03333. Subassembly K05555 includes parts
M06666 and F07777-77. The diamond () indicates M06666 is not available except in subassembly
K05555.
To Order Parts:
From Europe call our European Headquarters and Manufacturing Facility in Kolo, Poland at
[phone]. From the continental U.S., call 1-800-448-7881 to order parts. Have your cus-
tomer number, vehicle identification number, and part numbers ready when you call.
From other international locations, contact the Wood-Mizer distributor in your area for parts.
4.2 Sample Assembly
REF DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # QTY.
SAMPLE ASSEMBLY, COMPLETE (INCLUDES ALL INDENTED PARTS BELOW) A01111 1
1Sample Part F02222-22 1
Sample Subassembly (Includes All Indented Parts Below) A03333 1
2Sample Part ( Indicates Part Is Only Available With A03333) S04444-4 1 
Sample Subassembly (Includes All Indented Parts Below) K05555 1
3Sample Part ( Indicates Part Is Only Available With K05555) M06666 2 
4Sample Part F07777-77 1

Replacement Parts
Engine Assembly
4
4-2 G15doc091818 Replacement Parts
4.3 Engine Assembly
REF DESCRIPTION ( indicates parts available in assemblies only ) PART # QTY.
ENGINE ASSY, LT15G15 KOHLER 096971 1
1Engine KOHLER 15HP, CH15ST w/electric start 096443 1
Filter, Kohler Air #47-083-01 014718 1
Pre-Cleaner, Kohler Air #52-083-01 014719 1
Filter, Kohler Oil #52-050-02 014717 1
Plug, Kohler Spark #12-132-02 (Champion #RC12YC) P12757 1
Filter, Kohler In-Line Fuel #25-050-02 014720 1
2Plate, G15 Engine Mounting 095297 1
3Bolt, 3/8-16 x 1 1/4 F05007-131 4
4Bolt, M10x40-8.8 Hex Head Full Thread Zinc F81003-16 4
5Washer, 10,5 Flat Zinc F81055-1 9
6Key, 6,35 x 6,35 x 63,5, Parallel Zinc 095334 1
7Pulley, 30A Alternator 095267-1 1
8Pulley, D10,G13,G15 - Engine Zinc 096447-1 1
9Washer, G13 Kohler Engine, Zinc 088059-1 1
10 Screw, 7/16-20x1 1/2 SHC F05007-55 1
11 Screw, M8x8-33H-Hex Socket Set Flat Point F81014-1 1
12 Handle, Throttle Zinc 095300-1 1
13 Bracket, Throttle Cable Zinc 095301-1 1
14 BOLT, M6x16 8.8 Fe/Zn5 PN-M/82105 F81001-15 3
15 Washer, 6,4 Flat Zinc F81053-1 10
16 Nut, M6-8-B-Hex Nylon Zinc Lock F81031-2 5
1
2
3
4
5
67
8
9
10
11
12
13
16
15
17
14
15
15
16
18
19
20
21
22 5
40
23
24 25
24 24
25
25
26
27
16
15
25
28
15
31
30
25
31
25
29 33 32 534
35
36
37 38
39
14
15
15
16
41

Replacement Parts
Engine Assembly
Replacement Parts G15doc091818 4-3
4
17 Bolt, Throttle Cable Clamp Zinc-Plated 088120-1 1
18 Spring, Extension 3/8X3 014818 1
19 Cable, D10, LT15 Throttle 095308 1
20 Spring, 35 x 9,5 x 1,6 Extension 097443 1
21 Bracket, LT15/G15 Alternator 095302-1 1
22 Screw, 3/8-16x1,HHC GR8 F05007-7 4
23 Cover, LT15/G15 Alternator 095324-1 1
24 Screw, M8x16 -8.8-B-Hex Head Full Thread Zinc F81002-20 4
25 Washer, 8,4-Flat Zinc F81054-1 9
26 Bracket, "Denso" 30A Alternator 095268-1 1
27 Alternator D42 089661 1
28 Tensioner, 30A Alternator Belt 095296-1 1
29 Bolt, M6x60-8.8-Hex Head Full Thread Zinc F81001-9 1
30 Bolt, M8x25-8.8-B-Hex Head Full Thread Zinc F81002-5 1
31 Bolt, M8x20-8.8-B-Hex Head Full Thread Zinc F81002-4 3
32 Nut, M8-8-B-Hex Nylon Zinc Lock F81032-2 1
33 Screw, M10x80 -8.8 Hex Socket Head Cap Zinc F81003-69 1
34 Nut, M10-8-B –Hex Nylon Zinc Lock F81033-1 1
35 Hose, Rubber P10082 1
36 Cap, 3/8 Pipe Galvanize P04332 1
37 Muffler, G13 Engine 088313-1 1
38 Bracket Weldment, G13 Muffler Support Ptd 088310-1 1
39 Belt, AVX10x838La 095329 1
40 BELT, 17BX 2250 REF. BX87, 2210Li (GOOD-YEAR) 097448 1
41 DECAL, 3600 RPM ENGINE DIRECTION S20097A 1 1
1 Included in 099421 - LT15DC Pictographic Decal Kit.

Replacement Parts
Brake/Belt Tensioner Assembly
4
4-4 G15doc091818 Replacement Parts
4.4 Brake/Belt Tensioner Assembly
REF DESCRIPTION ( Indicates Parts Available In Assemblies Only ) PART # QTY.
BELT TENSIONER & BRAKE ASSEMBLY 096448 1
HANDLE, TENSIONER AND BRAKE COMPLETE 097436 1
Plate, Tensioner/Brake Handle Complete 097437 1
1Plate, Tensioner/Brake Handle 097438-1 1
2Fitting, M6 Type A Grease 086280 1
3Bushing, GFM - 1618-12 Igus 091455 2
4Grip, Tensioner/Brake Handle 095318-1 1
5Cam, LT15 Limit Switch Zinc 096969-1 1
6Limit Switch, FA138 Z11 100931 1
Angle Lever, Complete 097432 1
7Lever, Angle 097433-1 1
8Bushing, GFM 1719-25 094142 2
9Fitting, M6 Type A Grease 086280 1
10 Washer, 10,5 Flat Zinc F81055-1 1
11 Nut, M10-8-B Hex Nylon Zinc Lock F81033-1 1
12 Pivot, FI 13-M8 (T17628-ULMER) Angle 095285 2
1
2
3
4
5
8
67
9
10
11
12
8
13
14
15
15
12
17 18 19
19
16
20
15
21
15
15
15
22
23
24
25
26
27
42
29
30
31
32
32
33
34
34
35
36
37
40
38
41
43
44
45
45
44
45
44
28
29
44
46
47
48
49
50
51
51
52
53
54
55
56
56
57
44
58
59
150176_A
39

Replacement Parts
Brake/Belt Tensioner Assembly
Replacement Parts G15doc091818 4-5
4
13 Washer, 13 Flat Zinc F81056-1 1
14 Nut, M12-8 Hex Nylon Zinc Lock F81034-2 1
15 Washer, 8,4 Flat Zinc F81054-1 11
16 Plate, Tensioner 097442-1 1
17 Washer, 4,3 Flat Zinc F81051-2 4
18 Pusher, M8 Long 097444-1 1
19 Nut, M8-8-B Hex Zinc F81032-1 2
20 Bolt, M4x35 8.8 Hex Head Full Thread Zinc F81011-34 2
21 Bolt, M8x25-8.8-B Hex Head Full Thread Zinc F81002-5 2
22 Nut, M8-8-B Hex Nylon Zinc Lock F81032-2 3
23 Pin, 45308DNW Detent 089939 1
24 Seal Wire, Rubber Inside Dia 6mm 085338 1
25 Axle, Grip Rotation 097698-1 1
26 Knob, 1.135/120-13 Crank Handle 097696 1
27 Bolt, M8x150-8.8 Hex Head Zinc F81002-36 1
TENSION ROLLER W/BRAKE, COMPLETE 097446 1
28 Mount Wldmt, Tensioner Shaft Ptd 091112-1 1
29 Bushing, MFM-3240-30 (IGUS) 088461 2
30 Shaft, Belt Tensioner 096451-1 1
Roller, Tension Complete 511166 1
31 Axle, Belt Tension Wheel Zinc 509901-1 1
32 Bearing Wheel, Idle Side 6305 2RS NSK. P08066 2
33 Wheel, LT15 Belt Tension Zinc 087671-1 1
34 Ring, 62W Inside Spring Retaining F81090-1 2
35 Ring, 25Z Outside Retaining F81090-22 1
36 Washer, 17 Flat Zinc F81058-1 1
37 BOLT M16x30-8.8-Fe F81006-36 1
38 WASHER, DRIVE ASSY, ZINC 500863-1 1
39 WASHER,16.3 SPLIT LOCK ZINC F81058-2 1
40 Lever, Tensioner Double-Arm 096449-1 1
41 Washer, 17 Flat Zinc F81058-1 1
42 Nut, M16-8-Hex Nylon Zinc Lock F81036-2 1
43 Bracket, Brake Block Mount Ptd 091248-1 1
44 Washer, 8,4-Flat Zinc F81054-1 7
45 Bolt, M8x20-5.8-Hex Head Full Thread Zinc F81002-1 5
46 Key, A8x7x32 Parallel 088564 1
47 Block, F9273 123 Drive Belt Tensioner Brake 092111 2
48 Screw, M5x25-8.8-Hex Socket Head Cap Zinc F81000-7 6
49 Washer, 5,3 Flat Zinc F81052-1 6
50 Nut, M5-8-DIN 985 Zinc F81030-2 6
51 Pivot, FI 13-M8 (T17628-ULMER) Angle 095285 2
52 Screw, M8x40 -8.8- Hex Socket Head Cap Zinc F81002-29 1
53 Nut, M8-8-B-FeZn5 Hex Nylon Zinc Lock F81032-2 1
54 Spring, FI 1,9 x fi 14,2 x 104 091865 1
55 Pusher, Short Zinc 097445-1 1
56 Nut, M8-8-B-Hex Zinc F81032-1 2
57 Bushing, Tensioner Zinc 097447-1 1
58 Fitting, M6 Type A Grease 086280 1
59 Nut, M4-B-Hex Zinc F81029-1 2