Kunz AcrEase MR44B Datasheet

1
12/20
44” ROUGH CUT
OWNER’S MANUAL
With Assembly Instructions
For Models: MR44B & MR44BC
KUNZ ENGINEERING, INC. / MENDOTA, IL 61342 / PH [phone]

2

1
TABLE OF CONTENTS
SAFETY INTRODUCTION……………………………………………………………………………… 2
Safety Alert Symbol ………………………………………………………………………………..….. 2
Safety Information ………………………………………………………………………………..……. 3
Safety Signs and Locations ………………………………………………………………………..…. 4
ASSEMBLY INSTRUCTIONS ………………………………………………………………………......5
Items Included ………………………………………………………………………………………..…5
Assembly of Rear Wheels and Carrier Arms …………………………………………………….…. 5
Installation of Cross Brace Tubes and Height Adjust Assy.…………………………………….…. 6
Installation of Tongue Assembly …………………………………………………………………..….8
OPERATION AND ADJUSTMENTS ………………………………………………………………..….9
Intended Use ………………………………………………………………………………………..…..9
Tongue Configurations and Adjustments ……………………………………………………….……9
Adjusting Cutting Height …………………………………………………………………………..…...10
Starting Engine …………………………………………………………………………………….…... 12
Shutting Off Mower ………………………………………………………………………………..…... 13
Mower Operation …………………………………………………………………………………….....13
MAINTENANCE ……………………………………………………………………………………….….14
Drive Belt Removal and Tension …………………………………………………………………..…14
Mower Blade Removal, Balancing & Installation ……………………………………………..……..17
Lubrication …………………………………………………………………………………………..…..17
Engine Maintenance ………………………………………………………………………………..…. 17
Storage ………………………………………………………………………………………………..…17
EPA Evaporative Components ……………………………………………………………………..…17
SPECIFICATIONS …………………………………………………………………………………….….18
Engine ……………………………………………………………………………………………..……. 18
Mower …………………………………………………………………………………………………....18
Weight & Dimensions …………………………………………………………………………………..18
SERVICE PARTS …………………………………………………………………………………………19
Parts List ………………………………………………………………………………………………... 19
Parts Drawing ………………………………………………………………………………………….. 21
OPTIONAL EQUIPMENT ………………………………………………………………………………. 22
Wetlands Kit ………………………………………………………………………………………….…22
Electric Lift Kit ……………………………………………………………………………………….…. 23
Floatation Kit ………………………………………………………………………………………..….. 24
WARRANTY STATEMENT ………………………………………………………………………….…. 25

2
SAFETY INTRODUCTION
READ AND UNDERSTAND OWNER’S MANUAL BEFORE USING THIS MACHINE.
All operators of this equipment must read and completely understand all safety information,
operating instructions and maintenance. Failure to properly operate and maintain this
mower could result in serious injury or death to the operator or bystanders.
Your safety, and the safety of others, is very important. To help you make informed
decisions about safety, we have provided operating procedures and other information on
labels and in this manual. This information alerts you to potential hazards that could hurt
you or others.
This safety alert symbol is used to indicate safety instructions. Follow these
instructions to avoid personal injury and/or property damage. Read and follow all
instructions in this manual and the included engine manual.
You will find important safety information in a variety of forms, including:
Safety Labels –on the mower.
Safety Messages –preceded by a safety alert symbol and one of three signal
words: DANGER, WARNING, or CAUTION.
These signal words mean:
Indicates an imminently hazardous situation that, if not avoided, will result in death or
serious injury. This signal word is to be limited to the most extreme situations
typically for machine components which, for functional purposes, cannot be guarded.
Indicates a potentially hazardous situation that, if not avoided, could result in death or
serious injury, and includes hazards that are exposed when guards are removed. It
may also be used to alert against unsafe practices.
Indicates a potentially hazardous situation that, if not avoided, may result in minor or
moderate injury. It may also be used to alert against unsafe practices.
This entire manual is filled with important safety information. Please read it
carefully.
If you have any questions or concerns regarding the information in this owner’s
manual please contact Kunz Engineering at 815-539-6954.

3
IMPORTANT SAFETY INFORMATION
Do not allow anyone to operate this equipment who has not fully read and
comprehended the safety manual and who has not been properly trained in the safe
operation of the equipment.
Operator should be familiar with all functions of the unit.
Keep hands, feet, hair and clothing away from moving parts.
Remove all objects from the work area that might be picked up and thrown by the
blades.
Do not mow when children and others are around.
Keep all safety shields and deflectors in place during operation.
Shut off the engine and allow the mower blades to come to a complete stop before
making any adjustments to the mower.
Shut off engine before disconnecting the wing mower from the tow vehicle or
attempting to move the wing mower by hand.
Never carry children or passengers.
Do not allow children to operate this machine.
Follow all safety precautions outlined by the manufacturer of the tow vehicle being
used to pull this product.
This entire manual is filled with important safety information. Please read it
carefully.

4
SAFETY SIGNS AND LOCATIONS
Clean or Replace Any Safety Signs That Are not Readable or Damaged
Replacement decals can be purchased from your local dealer or
Kunz Engineering Inc.
Mendota, IL 61342
[phone]
275003 –Danger
Decal, Cut Hand & Foot
275007 –Warning
Decal, Belt Sheild
275002 –Warning
Decal, General
Serial # and Model #
Decal

5
ASSEMBLY INSTRUCTIONS
Read the complete assembly instructions before starting the assembly.
You should have:
- one mower deck assembly
- two carrier arm assemblies
- two rear tire assemblies
- one front cross brace tube and one rear cross brace tube with height adjust assy.
- one ATV tongue assembly
A. ASSEMBLY OF REAR WHEELS AND CARRIER ARMS
1. Set the mower deck assembly on wood blocks so that it is suspended off the ground.
Note: The operator controls are on the front of the deck. (Left and right are determined by
looking in the direction of travel or by standing at the rear of the deck assembly looking
forward.)
2. Install the rear tire assemblies on the carrier arm assemblies. Remove the hex nut and lock
washer from the rear tire assembly and install the 5/8”x7-1/2” tire axle bolt through the hole in
the carrier arm assembly. See figure 1. Secure assembly with the lock washer and hex nut
provided on the rear tire assembly. The rear tires should be offset to the outside of the deck
assembly on both sides. See figure 2.
Figure 1: Rear Tire Assembly Installation
Flat Washer
Rear Tire
Carrier Arm
Assembly
Hex Nut and
Lock Washer
Cup Washer
Bolt
Spanner
Tube

6
3. Install the two carrier arm assemblies in the pivot arms, which are located on the mower deck
assembly. Place the assembly so that the castered tires are on the front and the fixed tires are
on the back. See figure 2. Secure with 1/2" x 3-1/2" hex head bolts and lock nuts provided on
the pivot arms.
Note: Tighten 1/2” x 3-1/2” hex head bolts until just snug. This area needs to pivot when
adjusting the height. Under tightening can result in excessive wear and flexing. Over
tightening will make adjusting the cutting height very difficult.
Figure 2: Carrier Arm Installation
B. INSTALLATION OF CROSS BRACE TUBES AND HEIGHT ADJUST ASSY.
For this section, if your mower was purchased with an Electric Lift Kit (Part #003912), refer to
Section C of the Electric Lift Kit Owner’s Manual.
1. Remove the 1/2” x 3” hex head bolts, lock washers and nuts that are located on the top of each
carrier arm (four per carrier arm). The removed hardware will be used in step 2.
2. Install the cross brace tubes on the carrier arms with the 1/2” x 3” hex head bolts, lock washers
and nuts. Only hand tighten the hardware for this step. The support that has the height adjust
assy. fastened to it needs to be placed on the rear location. Orientate the support such that
the height adjust assy. hangs towards the engine. See figure 3.
3. Remove the 1/2” x 1” bolt and lock nut from the lower deck mount. Manually turn the screw
down towards the deck until the screw mounting flat hole lines up with the lower deck mount
hole. After achieving alignment, attach the screw mounting flat with the 1/2” x 1” hex head bolt
and secure the bolt with the provided lock nut. Do not over-tighten. This location must be able
to pivot. See figure 4.
Rear Tire Assy.
(Attach on outside for
both left and right sides)
Pivot Arm
Front (Rubber
Flap Side)
Carrier Arm
Assy.
1/2” x 3-1/2” Bolt

7
Figure 3: Cross Brace Tube Installation
Figure 4: Height Adjust Assy. Installation
4. Turn the crank on the height adjust assy. and raise the mower to its highest position. At this
time securely tighten the 1/2” x 3” hex head bolts, lock washers and nuts holding the cross
brace tubes in place. This step insures that proper alignment of the carrier arms has been
achieved.
Height Adjust Assy.
Cross Brace
Tube
1/2” x 3” Bolt
Screw Mounting
Flat
Height Adjust
Assy.
1/2” x 1” Bolt
Lower Deck
Mount
Screw

8
C. INSTALLATION OF TONGUE ASSEMBLY
1. The tongue can be installed either on the left or right carrier arm assembly depending on how
the tow-behind mower will be towed. See figure 5. Secure the hitch pivot on the chosen
carrier arm assembly with the 1/2” x 3-1/2” hex head bolt, lock washer, and nut provided.
2. Install the tongue into the hitch pivot and secure by placing the provided 5/16” wire lock pins on
each side of the hitch pivot.
Note: To help prevent any unwanted pin removal caused by oncoming debris install the 5/16”
wire lock pins with the wire lock section back from the direction of travel. See Figure 6.
Figure 5: Assembly of the Tongue and Hitch Pivot
Hitch Pivot –Attach to
Either Left or Right
Carrier Arm Assy.
Tongue
Carrier Arm
Assy.
Direct Behind Position
Offset Position