woodmizer D35 Series Guide

D35 Engine
Safety, Operation, Maintenance
& Parts Manual
LT30 rev. J7.02 - K3.01
LT40 rev. J8.02 - K5.01
LT30HD rev. J8.02 - K4.01
LT40HD rev. J8.02 - K7.01
LT40HD Super rev. J9.02 - K4.00
LT50HD rev. A5.10 - A6.00
Safety is our #1 concern! Read and understand
all safety information and instructions before oper-
ating, setting up or maintaining this machine.
January 2010
Form #1573

©2020
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
8180 West 10th Street
Indianapolis, Indiana 46214
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Table of Contents Section-Page
Table of Contents WMdoc031020 iii
TOC
SECTION 1 ABOUT THIS MANUAL 1-1
SECTION 2 OPERATION 2-1
2.1 Starting The Engine................................................................................2-1
SECTION 3 MAINTENANCE 3-1
3.1 Safety......................................................................................................3-1
3.2 Engine Oil & Filter.................................................................................3-2
3.3 Cooling System ......................................................................................3-2
3.4 Battery ....................................................................................................3-2
3.5 Alternator Belt ........................................................................................3-3
3.6 Air Cleaner .............................................................................................3-3
3.7 RPM Adjustments ..................................................................................3-3
SECTION 4 REPLACEMENT PARTS 4-1
4.1 Fuel Tank (D35 Tier2/D47)....................................................................4-1
LT40 Rev. K4.09+
LT40 Super Rev. J7.18+
LT40HD Rev. K6.10+
LT40HD Super Rev. K3.18+
LT50 Rev. A5.18+
4.2 Fuel Tank (D35 Tier4 Only)...................................................................4-3
LT40 Rev. K5.00+
LT40HD Rev. K7.00+
LT40HD Super Rev. K4.00+
LT50HD Rev. A6.00+
4.3 Fuel Tank (D35/D47) .............................................................................4-5
LT40 Rev. K1.03 - K4.08
LT40 Super Rev. J6.00 - J7.17
LT40HD Rev. K3.01 - K6.09
LT40HD Super Rev. K2.00 - K3.17
LT50 Rev. A3.00 - A5.17
4.4 Engine Mount Assembly (D35 Tier4)....................................................4-6
4.5 Engine Mount Assembly (D35 Tier2/D47)............................................4-7
4.6 Engine Assembly (D35 Tier4 Only).......................................................4-8
LT40 Rev. K5.00+
LT40HD Rev. K7.00+
LT40HD Super Rev. K4.00+
LT50HD Rev. A6.00+
4.7 Engine Assembly (D35 Tier2 Only).....................................................4-10
4.8 ECU & Relay/Fuse Assembly (D35 Tier4 Only).................................4-12
4.9 Relay/Throttle Assembly (D35 Tier2 Only).........................................4-13
4.10 Drive Assembly (D35 Tier4 Only).......................................................4-15
4.11 Drive Assembly (D35 Tier2)................................................................4-16

Table of Contents Section-Page
iv WMdoc031020 Table of Contents
4.12 Radiator Assembly (D35 Tier4 Only) ..................................................4-17
LT40 Rev. K5.00+
LT40HD Rev. K7.00+
LT40HD Super Rev. K4.00+
LT50HD Rev. A6.00+
4.13 Radiator Assembly (D35 Tier2) ...........................................................4-19
4.14 Alternator Assembly (D35 Tier4) ........................................................4-21
LT40 Rev. K5.00+
LT40HD Rev. K7.00+
LT40HD Super Rev. K4.00+
LT50HD Rev. A6.00+
4.15 Alternator Assembly (D35 Tier2/D47) ................................................4-23
4.16 Engine Pulley Guards (D35 Tier4 Only)..............................................4-25
LT40 Rev. K5.00+
LT40HD Rev. K7.00+
LT40HD Super Rev. K4.00+
LT50HD Rev. A6.00+
4.17 Engine Pulley Guards (D35 Tier2/D47)...............................................4-26
LT40 Rev. K4.05+
LT40HD Rev. K6.05+
LT40 Super Rev. J7.14+
LT40HD Super Rev. K3.13+
LT50HD Rev. A5.13+
4.18 Engine Pulley Guards (D35 Tier2/D47 Only)......................................4-27
LT40 Rev. J8.02 - K4.04
LT40HD Rev. J8.02 - K6.04
LT40 Super Rev. J6.00 - J7.13
LT40HD Super Rev. J9.02 - K3.12
LT50HD Rev. A4.00 - A5.12
4.19 Bearing Support (D35 Tier4 Only).......................................................4-28
4.20 Bearing Support (D35 Tier2/D47)........................................................4-29
INDEX I

3/10/20 1-1
1
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 operator’s manual and manufacturer's manual before
attempting to operate this equipment.
IMPORTANT! Read the sawmill operator’s manual and engine manu-
facturer’s manual for instructions and safety precautions before oper-
ating 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.
D35 Tier4 Engine
3H1185-4
Radiator
Muffler
Oil Filter
Fuel Filter
Air Cleaner

1-2 3/10/20
1
D35 Tier2 Engine
3H1009-3
Radiator
Muffler
Oil Filter
Fuel Filter
Air Cleaner

Starting The Engine
3/10/20 2-1
2
SECTION 2 OPERATION
2.1 Starting The Engine
Engine Control Lights
See Figure 2-1. D35 Tier2 Engine Only: The following indicator lights are located on the
sawmill control panel.
Alternator Charge Indicator: Lights up if the alternator is not charging the battery.
Engine Temperature Indicator: Lights up if the engine is overheating. A circuit breaker
assembly in the engine harness will shut the engine off if the engine overheats. Turn the
key switch off and allow the engine to cool for a period of time before restarting. If the
overheating condition persists, stop operating the engine until the condition is corrected.
Key Switch Indicator: Lights up when the key is in either the on or accessory (#1 or #3)
position.
Oil Indicator: Lights up if the oil pressure is too low. The engine will automatically switch to
low idle if a low oil condition occurs.
Glow Plug Indicator: Lights up after the key has been turned to the on (#1) position.
FIG. 2-1 D35 TIER2 ONLY

Starting The Engine
2-2 3/10/20
2
See Figure 2-2. D35 Tier4 Engine Only: Check the Manufacturer’s Manual for the oper-
ation of the engine controller located on the sawmill control panel.
See Table 2-1. IMPORTANT! D35 Tier2 Engine Only: The glow plug sensing relay pro-
vides manual control of glow plug operation. See the table for recommended glow plug on
times.
D35 Tier2 Engine Only: NOTE: The glow plug light will stay on indefinitely when the key
is in the pre-start (1) position. The glow plug light will go out after the engine is started.
CAUTION! Avoid leaving the key in the pre-start (1) position for more
than 30 seconds while the engine is not running. Doing so will drain the
sawmill battery which may reduce its service life.
Engine Start
DANGER! Always be sure the blade is disengaged and all persons are
out of the path of the blade before starting the engine. Failure to do so
will result in serious injury.
FIG. 2-2 D35 TIER4 ONLY
On Times For Manually Operated Glow Plugs
Ambient Temperature Suggested Glow Plug On Time
Less Than 32° F (0° C) 30 Seconds
32 - 60° F (0 -15° C) 25 Seconds
60 - 80° F (15 - 27° C) 15 Seconds
Above 80° F (27° C) 10 Seconds
TABLE 2-1 TIER2 ENGINE ONLY
3H1188-1

Starting The Engine
3/10/20 2-3
2
DANGER! Operate your engine/machine 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. The leaking
fuel or oil could potentially come in contact with hot surfaces and ignite
into flames.
WARNING! Be sure the power feed switch is in the neutral position
before turning the key switch to the on (#1) or accessory (#3) position.
This prevents accidental carriage movement. 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! Do not crank starter for more than 20 seconds at one time
during starting attempts. Damage to the engine may result.
CAUTION! Let engine idle for 2 minutes before applying load to pre-
vent engine damage.
1. See the engine manufacturer’s manual for lubricating oil recommendations for specific
temperature ranges.
2. Use #2 or better quality diesel fuel for above freezing starting. Use a #1 quality diesel fuel
for below freezing starting.
3. Turn the key switch on the control panel to the on (#1) position.
4. Wait the recommended glow plug on time (See TABLE 2-1)
5. Turn the key switch to the start (#2) position and release.
Engine Shutoff
CAUTION! A minimum 2 minute idle time is recommended to allow the
battery charge to recover before the engine is shut off.
Turn the key switch to the off (#0) position.

Safety
3-1 3/10/20
3
SECTION 3 MAINTENANCE
Refer to the manufacturer’s manual for maintenance intervals and procedures unless oth-
erwise instructed in this manual. Follow the manufacturer’s recommendations for dusty
conditions.
IMPORTANT! This manual only provides information about additional
procedures or procedures to be performed at different time intervals
than found in the manufacturer's manuals. Refer to the manufacturer's
manual for complete maintenance 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! Always be aware of and take proper protective measures
against rotating shafts, pulleys, fans, etc. Always stay a safe distance
from rotating members and make sure that loose clothing or long hair
does not engage rotating members resulting in possible injury.
DANGER! Engine components can become very hot during operation.
Avoid contact with any part of a hot engine. The exhaust components
of your engine are especially hot during and following operation. Con-
tact with hot engine components can cause serious burns. Therefore,
never touch or perform service functions on a hot engine. Allow the
engine to cool sufficiently before beginning any service function.
WARNING! Remove the blade before performing any engine service.
Failure 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 protection, breathing protection, hand protection and foot protec-
tion.

Maintenance
Engine Oil & Filter
Maintenance 3/10/20 3-2
3
This symbol identifies the interval (hours of operation) at which each maintenance pro-
cedure should be performed. "AR" signifies maintenance procedures which should be
performed as required.
3.2 Engine Oil & Filter
Check the oil level every 8 hours of operation. Add oil as necessary. See the engine man-
ual for oil viscosity and grade recommendations.
When checking the oil level, inspect the oil for indications of water in the oil. If there is
water present or the oil is cloudy, DO NOT start the engine. Replace the oil and oil filter,
run the engine at low idle for no more than 2 minutes and replace the oil and filter again.
CAUTION! Operating the engine with water in the engine oil will cause
severe damage to the engine. Follow all maintenance procedures for
checking oil level and oil/filter change intervals.
IMPORTANT! The engine is equipped with a muffler rain cap to keep
water out of the muffler and engine. If the sawmill is stored outside or
transported during rainy weather, the muffler must be covered.
Change the engine oil and oil filter after the first 50 hours of operation, then every 250
hours of operation.
3.3 Cooling System
Clean the radiator fins every 8 hours of operation. Spray the radiator with water from a
hose or compressed air to clean sawdust from the radiator fins. Do not use a pressure
sprayer.
CAUTION! Failure to keep the radiator fins clear of sawdust and/or dirt
may cause the engine to overheat resulting in damage to the engine.
3.4 Battery
Check the battery electrolyte level every 50 hours of operation. See manufacturer’s man-
ual for instructions.
DANGER! Batteries expel explosive gases. Keep sparks, flames,
burning cigarettes, or other ignition sources away at all times. Always
0
8
50
8
50

Maintenance
Alternator Belt
3-3 3/10/20 Maintenance
3
wear safety goggles and a face shield when working near batteries.
Failure to do so will cause serious injury.
WARNING! Battery posts, terminals and related accessories contain
lead and lead compounds, chemicals known to the State of California
to cause cancer and reproductive harm. Wash hands after handling.
3.5 Alternator Belt
The alternator belt is self-tensioning and should not need adjustment.
If the battery continues to not charge properly or the belt continues to squeal after the ini-
tial 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.
3. Pry the belt idler up and remove the belt from the alternator and engine pulleys.
4. While holding the idler up, install the new belt around the alternator and engine pulleys.
5. Release the idler on top of the belt and reinstall the alternator and drive belt covers.
3.6 Air Cleaner
Replace the air cleaner cartridge every 200 hours of operation. Change the cartridge
more often if operating the sawmill in dirty conditions or if engine performance indicates a
new cartridge is necessary.
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.
200
200

Maintenance
RPM Adjustments
Maintenance 3/10/20 3-4
3
See Table 3-1.
Before checking the RPM, make sure belt and brake strap tensions are correct (See Saw-
mill Maintenance). Also check oil, fuel, and coolant levels.
D35 Tier4 Engine Only: Check the Manufacturer’s Manual to see if the RPM adjustment
is necessary.
D35 Tier2 Engine Only: See below for RPM adjustment.
Make sure the throttle solenoid linkage is adjusted properly. With the clutch disengaged,
the throttle linkage should rest against the idle adjustment screw. With the clutch
engaged, the linkage should rest against the high-end adjustment screw and leave 0” to
1/32” of play in the linkage.
CAUTION! Failure to properly adjust the throttle solenoid linkage may
cause damage to the solenoid.
1. Disengage the clutch and loosen the solenoid mounting bolts to adjust the throttle sole-
noid linkage.
2. Adjust the solenoid as far to the right as possible and retighten the mounting bolts.
3. Engage the clutch and recheck the amount of play in the linkage.
If there is more that 1/32” of play in the linkage with the clutch engaged, disengage the
clutch and turn the linkage turnbuckle.
4. Repeat adjustments to achieve 0”-1/32” of play in the linkage with the clutch engaged.
Engine High End RPM Low End RPM
D35 3000 1500
TABLE 3-1

Maintenance
RPM Adjustments
3-5 3/10/20 Maintenance
3
See Figure 3-1.
5. Start the engine to measure the low-end RPM; let idle for 10 minutes.
6. With the engine at idle, adjust the low-end RPM to 1500. To increase speed, tighten the
idle adjustment screw. The high-end adjustment screw should not be adjusted.
FIG. 3-2 TIER2 ENGINE ONLY
3H1010
Throttle Solenoid
Linkage Turnbuckle
Idle Adjustment
Screw
High-End
Adjustment Screw
Engage clutch and
push here to check
for play (0 to 1/32")

Replacement Parts
Fuel Tank (D35 Tier2/D47)
Replacement Parts D3507doc031020 4-1
D35 4
SECTION 4 REPLACEMENT PARTS
4.1 Fuel Tank (D35 Tier2/D47)
LT40 Rev. K4.09+
LT40 Super Rev. J7.18+
LT40HD Rev. K6.10+
LT40HD Super Rev. K3.18+
LT50 Rev. A5.18+
REF DESCRIPTION (Indicates Parts Available In Assemblies Only) PART # QTY.
TRAY ASSEMBLY, LT40/50 DIESEL TANK 074830 1
1Tank, 5 Gallon Low Pro Diesel 103928 1
2Grommet, Shut Off 046881 061250 1
3Cap, Fuel Tank Diesel 080185BE 061257 1
4Fitting, Return/tube Diesel 468489 061256 1
5Grommet, Shut Off 046881 061250 1
6Fitting, Pick-Up/Tube Diesel 468871A 061255 1
7Tank Weldment, Fuel LT40/50 103943 1
3
6
2
5
4
1
8
7
9
3H1168B
10
17
18
16
15
914
13
12
11
11

Replacement Parts
Fuel Tank (D35 Tier2/D47)
4-2 D3507doc031020 Replacement Parts
D35
4
8Cover, Fuel Tank 103867 1
9Strap, 20" Rubber P11668 3
10 Bolt, 1/4-20 X 1" Carriage Head F05005-34 3
11 Nut, 1/4-20 Hex Lock F05010-21 5
12 Bolt, 1/4-20 x 3/4” Carriage F05005-113 2
13 Clamp, 1/2” EMT Coated P07584 6
14 Washer, 1/4” SAE Flat F05011-11 2
15 Bolt, 1/4-20 x 3/4” Hex Head Grade 5 F05005-123 3
16 Bolt, 5/16-18 x 1/2” Hex Head Grade 5 F05006-15 4
17 Washer, 5/16” Split Lock F05011-13 4
18 Washer, 5/16” SAE Flat F05011-17 4
Hose, Fuel 5/16" EPA 15G CARB R02423-3 7 Ft.
Hose, Fuel 1/4" EPA 15G CARB R02423-2 8 Ft.

Replacement Parts
Fuel Tank (D35 Tier4 Only)
Replacement Parts D3507doc031020 4-3
D35 4
4.2 Fuel Tank (D35 Tier4 Only)
LT40 Rev. K5.00+
LT40HD Rev. K7.00+
LT40HD Super Rev. K4.00+
LT50HD Rev. A6.00+
REF DESCRIPTION (Indicates Parts Available In Assemblies Only) PART # QTY.
TRAY ASSEMBLY, LT40/50 TIER4 DIESEL TANK 079637 1
1Tank, 5 Gallon Low Pro Diesel 103928 1
2Grommet, Shut Off 046881 061250 1
3Cap, Fuel Tank Diesel 080185BE 061257 1
4Fitting, Return/tube Diesel 468489 061256 1
5Grommet, Shut Off 046881 061250 1
6Fitting, Pick-Up/Tube Diesel 468871A 061255 1
7Tank Weldment, Fuel LT40/50 103943 1
8Cover, Fuel Tank 103867 1
3
6
2
5
4
1
8
7
9
3H1187-1
10
17
18
16
15
9
14
13
20
21
22
23
24
25
26
27
12
11
19
11

Replacement Parts
Fuel Tank (D35 Tier4 Only)
4-4 D3507doc031020 Replacement Parts
D35
4
9Strap, 20" Rubber P11668 3
10 Bolt, 1/4-20 X 1" Carriage Head F05005-34 3
11 Nut, 1/4-20 Hex Lock F05010-21 5
12 Bolt, 1/4-20 x 3/4” Carriage F05005-113 2
13 Clamp, 1/2” EMT Coated P07584 6
14 Washer, 1/4” SAE Flat F05011-11 2
15 Bolt, 1/4-20 x 3/4” Hex Head Grade 5 F05005-123 3
16 Bolt, 5/16-18 x 1/2” Hex Head Grade 5 F05006-15 4
17 Washer, 5/16” Split Lock F05011-13 4
18 Washer, 5/16” SAE Flat F05011-17 4
19 Hose Clamp, 7/32in-5/8in P649 4
Separator Assembly, D35 T4 ECU F/W 079409 1
20 Mount Weldment, D35 T4 ECU F/W Separator 079471 1
21 Bolt, 1/4-20x1 Carriage F05005-34 5
22 Bolt, 5/16-18x4 Hex Head Grade 5 F05006-109 2
23 Nut, 5/16-18 Nylok Hex F05010-58 2
24 Nut, 1/4-20 Nylock F05010-69 5
25 Washer, 1/4 SAE Flat F05011-11 5
26 Washer, 5/16 SAE Flat F05011-17 2
27 Relays/Fuse Assembly, D35 T4 ECU (See Section 4.8 for Parts) 079422 1
Hose, Fuel 5/16" EPA 15G CARB R02423-3 7 Ft.
Hose, Fuel 1/4" EPA 15G CARB R02423-2 8 Ft.

Replacement Parts
Fuel Tank (D35/D47)
Replacement Parts D3507doc031020 4-5
D35 4
4.3 Fuel Tank (D35/D47)
LT40 Rev. K1.03 - K4.08
LT40 Super Rev. J6.00 - J7.17
LT40HD Rev. K3.01 - K6.09
LT40HD Super Rev. K2.00 - K3.17
LT50 Rev. A3.00 - A5.17
REF DESCRIPTION (Indicates Parts Available In Assemblies Only) PART # QTY.
TANK ASSEMBLY, 5 GALLON DIESEL A12132 1
1Tank, 5 Gallon Fuel P12166 1 
2Pickup, 9" Fuel P12172 2
3Cap, 3/5 Gallon Fuel Tank P09683 1
4Fitting, 1/4” NPT Male Quick Disconnect 015583 1
5Fitting, Female Quick Disconnect Barb 015582 1
6Fitting, 1/4" NPT Plastic Female Disconnect P12175 1
7Fitting, 1/4” Barb Plastic Male Disconnect P12176 1
8 HOSE, 1/4” ID FUEL P642 7.17 Ft
9 HOSE, 5/16” ID FUEL 016338 9 Ft.
10 CLAMP, 7/32 - 1/2 HOSE P649 4
11 BULB, 5/16” FUEL LINE PRIMER 006687 1
ADDITIVE, DIESEL FUEL 16OZ BOTTLE 004878 1
1 Stanadyne Performance Formula helps eliminate contaminants and water in fuel, prevents gelling in cold weather, and improves
lubrication of fuel system parts. 16 oz. bottle treats 60 gallons of diesel fuel.
1
BULB KIT, DIESEL PRIMER 061080 1
3H0780-2
1
2
2
4
3
10
5
10
10
10 9
8
6
7
11
12

Replacement Parts
Engine Mount Assembly (D35 Tier4)
4
4-6 D3507doc031020 Replacement Parts
D35
4.4 Engine Mount Assembly (D35 Tier4)
REF DESCRIPTION (Indicates Parts Available In Assemblies Only) PART # QTY.
1 PIN WELDMENT, MOTOR PIVOT KUBOTA 015855 1
2 PIVOT WELDMENT, D35 T4 ENGINE PIVOT 079365 1
3 MOUNT WELDMENT, D35 T4 LEFT ENGINE MOUNT 079372 1
4 MOUNT WELDMENT, D35 T4 RIGHT ENGINE MOUNT 079377 1
5 BOLT, 1/2-13X1 1/4 HEX HEAD GRADE 5 F05008-37 1
6 BOLT, 1/2-13X1 3/4 HEX HEAD GRADE 5 FT F05008-88 4
7 NUT, 1/2-13 NYLON HEX LOCK F05010-8 5
8 WASHER, 1/2 SAE FLAT F05011-2 8
9 WASHER, 10MM SPLIT LOCK F05011-88 16
10 BOLT, M10-1.5X25MM HEX HEAD GRADE 8.8 F81003-11 16
1
5
3
4
9
10
8
7
3H1185-2
2
6