woodmizer G13 Guide

WARNING! Read and understand this
manual before using this machine.
!
G13 Engine
Safety, Operation, Maintenance
& Parts Manual
rev.A-D034606 Engine Module, 2002
Used with
LT15G13 rev. E6.07
Safety is our #1 concern!
April 2010
Form #884

Active Patents assigned to Wood-Mizer, LLC
Wood-Mizer, LLC has received patents that protect our inventions which are a result of a dedication to
research, innovation, development, and design. Learn more at: woodmizer.com/patents
©2022 Wood-Mizer LLC
Printed in the United States of America, all rights reserved. No part of this manual may be reproduced in any form by any
photographic, electronic, mechanical or other means or used in any information storage and retrieval system without
written permission from
Wood-Mizer, LLC
8180 West 10th Street
Indianapolis, Indiana 46214
California
Proposition 65 Warning
WARNING:
Breathing gas/diesel engine exhaust exposes you to chemicals known to
the State of California to cause cancer and birth defects or other reproductive harm.
Always start and operate the engine in a well-ventilated area.
If in an enclosed area, vent the exhaust to the outside.
Do not modify or tamper with the exhaust system.
Do not idle the engine except as necessary.
For more information go to www.P65warnings.ca.gov.
WARNING: Drilling, sawing, sanding or machining wood products can expose you to
wood dust, a substance known to the State of California to cause cancer. Avoid inhaling
wood dust or use a dust mask or other safeguards for personal protection.
For more information go to www.P65Warnings.ca.gov/wood.

Table of Contents Section-Page
Table of Contents WM doc 2/25/22 iii
SECTION 1 ABOUT THIS MANUAL
SECTION 2 OPERATION
2.1 Starting The Engine ............................................................................... 2-1
SECTION 3 MAINTENANCE
3.1 Safety ..................................................................................................... 3-1
3.2 Cooling System ...................................................................................... 3-1
3.3 Air Filter & Pre-Cleaner ........................................................................ 3-1
3.4 Fuel Filter............................................................................................... 3-2
3.5 RPM Adjustments .................................................................................. 3-2
3.6 Miscellaneous Maintenance................................................................... 3-2
SECTION 4 REPLACEMENT PARTS
4.1 Engine Assembly ................................................................................... 4-4
LT15 Rev. E1.00+ .....................................................4-4
4.2 Engine Assembly ................................................................................... 4-6
LT15 Rev. D4.00 - D7.00 ..........................................4-6
4.3 Engine Assembly ................................................................................... 4-8
LT15 Rev. A1.00 - D3.00...........................................4-8
4.4 Throttle/Clutch Assembly.................................................................... 4-10
LT15 G13 Rev. E1.00 - E6.09 .........................................4-10
.......................................................................4-10
4.5 Throttle/Clutch Assembly.................................................................... 4-12
LT15 Rev. D4.00 - D7.00 ........................................4-12
4.6 Throttle/Clutch Assembly.................................................................... 4-14
LT15 Rev. D3.00 .....................................................4-14
4.7 Throttle/Clutch Assembly.................................................................... 4-15
LT15 Rev. A1.00 - D2.00.........................................4-15

Introduction
1
1-1 WM doc 2/25/22 Introduction
SECTION 1 ABOUT THIS MANUAL
This manual is provided as a supplement to the equipment manufacturer’s manuals.
This manual provides information specific to the use of this equipment on the Wood-Mizer® sawmill. Refer to the sawmill opera-
tor’s manual and manufacturer's manual before attempting to operate this equipment.
NOTICE Read the sawmill operator’s manual and engine manufacturer’s manual for
instructions and safety precautions before operating this equipment.
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.

Operation
Starting The Engine 2
Operation WM doc 2/25/22 2-1
SECTION 2 OPERATION
2.1 Starting The Engine
DANGER! Ensure the blade is disengaged and all persons are out of the path of the
blade before starting. Failure to do so will result in death or serious injury.
DANGER! Operate your engine only in well ventilated areas. The exhaust gases of
your engine can cause nausea, delirium, and potentially death unless adequate venti-
lation is present.
DANGER! Never operate an engine with a fuel or oil leak. This is a fire hazard, which
may cause serious injury or death.
WARNING! Do not operate engine without proper and operational spark arrester/muf-
fler. Sparks emitted from the engine exhaust could ignite surrounding materials, caus-
ing serious injury or death.
CAUTION! EPA Compliant Gas Tanks Only: Always relieve all fuel pressure inside
the tank prior to filling or connecting fuel fittings. Failure to do so may result in fuel
spillage.
CAUTION! EPA Compliant Gas Tanks Only: Disconnect the fuel tank when not in use,
or engine flooding or fuel spillage may result.
1. Turn the run/stop switch to the RUN position.
2. Close the engine choke by moving the choke lever to the start
position.
3. Pull the start rope slowly until you feel resistance, then pull the
cord quickly to start the engine. Repeat with the choke opened
slightly if necessary.
NOTE: If the engine is hard to start with
the throttle in the idle position, push the
throttle swivel plate down slightly and
retry.
4. When the engine starts, slowly open the choke all the way by
moving the choke lever to the off position.
For more information, see the engine manufacturer’s operation man-
ual.
ENGINE SHUTOFF
1. Disengage the clutch handle to stop the blade if necessary.
2. Let the engine run for 15 seconds with no load, then push the run/stop switch to STOP.
FIG. 2-1

Maintenance
Safety
3
3-1 WM doc 2/25/22 Maintenance
SECTION 3 MAINTENANCE
Refer to the manufacturer’s manual for maintenance intervals and procedures unless otherwise instructed in this manual. Fol-
low the manufacturer’s recommendations for dusty conditions.
NOTICE This manual only provides information about additional procedures or
procedures to be performed at different time intervals than found in the manu-
facturer's manuals. Refer to the manufacturer's manual for complete mainte-
nance instructions.
WARNING! Clean sawdust from all guards, vents, control boxes, or any
area where sawdust may gather after every shift. Failure to do so may
result in fire, causing death or serious injury.
3.1 Safety
Use caution when performing maintenance or service to the engine.
DANGER! Take proper protective measures against rotating shafts, pulleys,
fans, etc.
Ensure loose clothing or long hair does not engage rotating members.
DANGER! Do not touch or perform service functions on a hot engine. Allow
the engine to cool sufficiently before beginning any service function. Hot
engine components will cause serious burns.
WARNING! Remove the blade before performing any engine service.
WARNING! Wear eye, hand, and foot protection equipment when performing
service functions.
3.2 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 instructions.
3.3 Air Filter & Pre-Cleaner
WARNING! Always wear proper and necessary safety equipment when performing ser-
vice functions. Proper safety equipment includes eye protection, breathing protection,
hand protection and foot protection.
Service the pre-cleaner every four hours of operation 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 operation.
Replace the air filter (cleaner) every 200 hours of operation.

Maintenance
Fuel Filter 3
Maintenance WM doc 2/25/22 3-2
Replace the pre-cleaner (element wrapper) every 2000 hours of operation.
See the engine manual for further instructions.
3.4 Fuel Filter
Replace the fuel filter every 100 hours of operation or as required for engine performance.
3.5 RPM Adjustments
WARNING! Remove the blade before performing any engine service. Failure
to do so may result in serious injury.
Check the RPM with a tachometer every 200 hours of operation.
Before checking the RPM, make sure belt and brake strap tensions are correct (See Sawmill Maintenance).
Check oil, fuel, and coolant levels.
Ensure the throttle cable does not affect the engine RPM when the clutch handle is disengaged. Ensure the cable is not bent or
kinked.
1. Start the engine to measure the low-end RPM.
2. Refer to the engine manual to adjust the low-end RPM.
3. Engage the clutch handle to throttle the engine and measure the high-end RPM.
The high-end RPM is factory-set at 3750. Readjust the throttle cable if necessary to increase or reduce the high-end engine
speed.
3.6 Miscellaneous Maintenance
CAUTION! Do not remove the plug wire to check for electrical spark. Damage to the igni-
tion circuit may result.
Inspect the spark plugs every 100 hours of operation. Remove any deposits and adjust gap if necessary. See engine manual
for further information.
Clean and inspect the spark arresters every 50 hours of operation. Replace if damaged.
Review the manufacturer's manual for maintenance intervals.
Engine High End RPM Low End RPM
G13 3750 1800

Replacement Parts
Engine Assembly
4
4-4 WM doc 2/25/22 Replacement Parts
SECTION 4 REPLACEMENT PARTS
4.1 Engine Assembly
LT15Rev. E1.00+
REF DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # QTY.
Cover, Engine P12393 1
ENGINE ASSEMBLY, 13 HP KOHLER W/CLUTCH 034806 1
1Engine, 13 HP Kohler #PA22519 014809 1
2Filter, Kohler Air #47-083-01 014718 1
3Pre-Cleaner, Kohler Air #52-083-01 014719 1
4Filter, Kohler Oil #28-050-01-S 036653 1 1
Filter, Kohler Oil #52-050-02 014717 1 1
Muffler Kit, G13 Kohler 016498 1
5Muffler, Kohler #12-068-39 016106 1 u
6Gasket, Kohler Muffler #12-041-03 016494 1
1
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5
6
8
7
9
10
11
12
13
14
15
16
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18
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20
150145

Replacement Parts
Engine Assembly 4
Replacement Parts WM doc 2/25/22 4-5
7Deflector, Kohler Flat #12-755-27 016497 1
8Arrestor, Kohler Spark #12-189-02 016495 1
9Guard, Kohler Muffler #12-314-11 016105 2 1
Plug, Kohler Spark #12-132-02 (Champion #RC12YC) P12757 1
Filter, Kohler In-Line Fuel #25-050-02 014720 1
Switch, Kohler PHI Oil #25-099-24-S 051992 1
Throttle and Clutch Parts (See Section 3.5)
10 Hose, Oil Drain P10082 1
11 Cap, Oil Drain Hose P04332 1
12 Plate, LT15 Engine Guard 016493 1
13 Sheave, BK55QT 016512 1
14 Key, 1/4” X 1 11/16” S04124 3 1
15 Bushing, QT x 1” 016513 1
16 BELT, BX87 DRIVE 017943 1
17 WASHER, 3/8” SAE FLAT F05011-3 4
18 WASHER, 3/8” SPLIT LOCK F05011-4 4
19 BOLT, 3/8-16 X 1 3/4” HEX HEAD GR5 F05007-119 4
20 Spacer, 17/32” x 1 1/2” x 3/4” 034641 4
1 Shorter Oil Filter 036653 required for LT15G13 Rev. E4.00 and later to avoid interference with up/down
assist mechanism. Either filter can be used for previous revisions.
2 No longer available (5/16). No replacement part available from Kohler or Wood-Mizer.
3 Replaces S21486 1/4” x 1” key. S04124 always used in production.

Replacement Parts
Engine Assembly
4
4-6 WM doc 2/25/22 Replacement Parts
4.2 Engine Assembly
LT15Rev. D4.00 - D7.00
REF DESCRIPTION ( Indicates Parts Available In Assemblies Only) PART # QTY.
Cover, Engine P12393 1
ENGINE ASSY, 13 HP KOHLER W/CLUTCH 016517 1
1Engine, 13 HP Kohler #PA22519 014809 1
2Filter, Kohler Air #47-083-01 014718 1
3Pre-Cleaner, Kohler Air #52-083-01 014719 1
4Filter, Kohler Oil #52-050-02 014717 1
Muffler Kit, G13 Kohler 016498 1
5Muffler, Kohler #12-068-39 016106 1 u
6Gasket, Kohler Muffler #12-041-03 016494 1
7Deflector, Kohler Flat #12-755-27 016497 1
1
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4
5
6
8
7
9
10
11
12
13
14
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