woodmizer G15 Guida
WARNING! Read and understand this
manual before using this machine.
!
G15 Engine
Safety, Operation, Maintenance
& Parts Manual
034804 Engine, G15 Kohler rev. D
Safety is our #1 concern!
Form #940
Used with
LT15G15 rev. D2.00 - E6.09
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Printed in the United States of America, all rights reserved. No part of this manual may be reproduced in any form by any
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written permission from
Wood-Mizer, LLC
8180 West 10th Street
Indianapolis, Indiana 46214
Table of Contents Section-Page
Table of Contents WM doc 11/29/23 iii
SECTION 1 SAFETY
1.1 Safety ..................................................................................................... 1-1
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............................................................................................... 3-1
3.5 Battery.................................................................................................... 3-1
3.6 Miscellaneous Maintenance...................................................................3-2
3.7 RPM Adjustments.................................................................................. 3-2
SECTION 4 REPLACEMENT PARTS
4.1 Engine Assembly ................................................................................... 4-1
5.2 Throttle/Clutch Assembly...................................................................... 5-1
Introduction
Safety
1
1-1 WM doc 11/29/23 Introduction
SECTION 1 SAFETY
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.
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 per-
formed at different time intervals than found in the manufacturer's manuals. Refer to the manufac-
turer's manual for complete maintenance instructions.
WARNING! Clean sawdust from all guards, vents, control boxes, or any area where saw-
dust may gather after every shift. Failure to do so may result in fire, causing death or seri-
ous injury.
1.1 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 suffi-
ciently 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.
Operation
Starting The Engine 2
Operation WM doc 11/29/23 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 ventilation 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/muffler. Sparks
emitted from the engine exhaust could ignite surrounding materials, causing 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. Close the engine choke by moving the choke lever to the start position.
2. Turn the key switch to the START position and release.
3. Release the key switch to the RUN position after the engine starts.
4. When the engine starts, slowly open the choke all the way by moving the choke lever to the off position.
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 turn the key switch to the OFF position.
Maintenance
Safety
3
3-1 WM doc 11/29/23 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 per-
formed at different time intervals than found in the manufacturer's manuals. Refer to the manufac-
turer's manual for complete maintenance instructions.
WARNING! Clean sawdust from all guards, vents, control boxes, or any area where saw-
dust 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 suffi-
ciently 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 safety equipment when performing service functions, including 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.
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 Battery
Check the battery electrolyte level every 50 hours of operation. See manufacturer’s manual for instructions.
DANGER! Batteries expel explosive gases.
Maintenance
Miscellaneous Maintenance 3
Maintenance WM doc 11/29/23 3-2
Keep sparks, flames, burning cigarettes, or other ignition sources away at all times.
Wear a face shield when working on batteries.
WARNING! Battery posts, terminals and related accessories contain lead and lead compounds.
Wash hands after handling.
3.6 Miscellaneous Maintenance
Inspect the spark plugs every 100 hours of operation. Remove any deposits and adjust gap if necessary. See engine man-
ual for further information.
Review the manufacturer's engine manual for maintenance intervals.
3.7 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, ensure 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. Make sure 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.
4. Readjust the throttle cable if necessary to increase or reduce the high-end engine speed.
Engine High End RPM Low End RPM
G15 3750 1800
Replacement Parts
Engine Assembly
4
4-1 WM doc 11/29/23 Replacement Parts
SECTION 4 REPLACEMENT PARTS
4.1 Engine Assembly
REF PART # DESCRIPTION COMMENTS QTY.
P12393 Cover, Engine 1
034804 ENGINE ASSEMBLY, 15 HP KOHLER
W/CLUTCH & ELECTRIC START
G15 engine option no longer
available (3/11). Use conversion
kit 065379 for service on LT15
Rev. E4.00 and later.KNOTE:
Conversion kit will not work on
LT15 prior to Rev. E4.00.
1
1033377 Engine, 15 HP Kohler #PH44528 Available in assemblies only. 1
2014718 Filter, Kohler Air #47-083-01 1
3014719 Pre-Cleaner, Kohler Air #52-083-01 1
4014717 Filter, Kohler Oil #52-050-02 1
061128 Muffler Assembly, G13/G15 Kohler
w/Arrestor
1
Replacement Parts WM doc 11/29/23 4-2
Replacement Parts
Engine Assembly 4
5061108 Muffler Kit, G15 Kohler
#12-786-16-S
Available in assemblies only. 1
6N/A Gasket, Kohler Muffler 1
7036684 Arrestor, Kohler Spark 1
8061109 Cage, Muffler Kohler #12-314-32-S NOTE: Muffler Cage 061109 is
a round cage and can be used
only for engines equipped with
the round muffler.
1
P12757 Plug, Kohler Spark #12-132-02 (Cham-
pion #RC12YC)
1
014720 Filter, Kohler In-Line Fuel #25-050-02 1
051992 Switch, Kohler PHI Oil #25-099-24-S 1
038425 Solenoid, Kohler Starter #25-435-02-S 1
038426 Bypass Kit, Kohler Oil PSI #82-755-25-S 1
Throttle and Clutch Parts See Section 4.5
9P10082 Hose, Oil Drain 1
10 P04332 Cap, Oil Drain Hose 1
11 016493 Plate, LT15 Engine Guard 1
12 016512 Sheave, BK55QT 1
13 S04124 Key, 1/4” X 1 11/16” 1
14 016513 Bushing, QT x 1 1
024718 Harness Assembly, Battery To Engine 1
15 017943 BELT, BX87 DRIVE 1
16 F05011-3 WASHER, 3/8” SAE FLAT 4
17 F05011-4 WASHER, 3/8” SPLIT LOCK 4
18 F05007-124 BOLT, 3/8-16 X 2 HEX HEAD GR5 4
19 034641 Spacer, 17/32 x 1 1/2 x 3/4 4
REF PART # DESCRIPTION COMMENTS QTY.
Replacement Parts
Throttle/Clutch Assembly
5
5-1 WM doc 11/29/23 Replacement Parts
5.2 Throttle/Clutch Assembly
REF PART # DESCRIPTION COMMENTS QTY.
1034616 PLATE, THROTTLE CABLE BRACKET LT15G 1
2F05005-1 SCREW, 1/4-20 X 3/4 FT HEX HEAD 1
3F05010-69 NUT, 1/4-20 NYLON LOCK 1
4014818 SPRING, EXTENSION 3/8 X 3 1
5034805 PIVOT WELDMENT, THROTTLE LT15G 1
6F05005-125 BOLT, 1/4-20 X 2 HEX HEAD GR5 1
7F05010-21 NUT, 1/4-20 SWAGED 2
8015446 LINK, THROTTLE 2 13/16 1
9034838 CABLE ASSEMBLY, LT15G15 THROTTLE 1
10 P04211 KNOB, 5/8-11 BALL 1
11 016487 HANDLE, LT15 CLUTCH 1
12 F05007-12 SCREW, 3/8-16 X 1/2 SOCKET HEAD CUP PT
SET
2
13 034815 ACTUATOR WELDMENT, THROTTLE LT15D&G 1
14 034818 LINKAGE, THROTTLE LT15D&G 1
15 F05005-15 BOLT, 1/4-20 X 1/2” HEX HEAD 1
16 F05010-21 NUT, 1/4-20 SWAGED 1
17 016486 BUSHING, 5/8” ID X 7/8” OD X 1 1/8” LONG
FLANGED BRONZE
2
18 034612 BLOCK WELDMENT, LINKAGE CLUTCH/BRAKE 1
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1
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