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Kunz MR55B - page 1
57” ROUGH CUT MR55K MR55B OWNER’S MANUAL For Models: MR55T, MR55B-17. 5HP, MR55B-22-23HP & MR55K KUNZ ENGINEERING, INC. 42 / PH (815) 53 9-6954 1/09 With Assembly Instructions / MENDOTA, IL 613 ...
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Kunz MR55B - page 2
SAFETY INTRODUCTION Your safety, and the safety of others, is very important. To help you make informed decisions about safety, we have provided oper ating procedures and other information on labels and in this manual. This information alerts you to potential hazards that could hurt you or others. You will find important safety informa tion in a va ...
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Kunz MR55B - page 3
IMPORTANT SAFETY INFORMATION WARNING: Do not allow anyone to operate this equipment who has not fully read and comprehended the safety manual and who ha s not been properly trained in the safe operation of the equipment. WARNING: Operator should be familiar with all func tions of the unit. DANGER: Keep hands, feet, hair and clothi ng away from movi ...
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Kunz MR55B - page 4
SAFETY SIGNS AND LOCATIONS Clean or R Mendota, IL eplace Any Safety Signs That Are not Readable or Damaged Replacement decals can be purchased from your local dealer or Kunz Engineering Inc. 61342 (815) 539-6954 275003 – Danger Decal, Cut Hand & Foot 275007 – Warning Decal, Belt Sheild 275002 – Warning Decal, General Serial # and Model # ...
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Kunz MR55B - page 5
ASSEMBLY INSTRUCTIONS Read the complete assembly instructi ons before starting the assem bly. You should have: - one mower deck assembly - two carrier arm assemblies - two rear tire assemblies - one ATV tongue assembly A. ASSEMBLY OF MOWER WHEELS 1. Set the mower deck assembly on wood blocks so that it is suspended off the ground. Note: The operato ...
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Kunz MR55B - page 6
Figure 1: Rear Tire Assembly Installation Rear Tire rrier Arm sembly Ca As Figure 2: Assembly of Carrier Arm Assy., Hitch Pivot, and Tongue Rear Tire As Carrier Arm A Direct Behind Position Offset Position sy. (Attach on outside for both left and right sides) Pivot Arm ssy. Height Adjust Screw Hitch Pivot – Attach to Either Left or Right Carrier ...
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Kunz MR55B - page 7
Figure 3: ATV Tongue Assembly TIONS AND ADJUSTMENTS OPERA indicate safety instructions. Follow injury and/or property damage. This safety alert symbol is used to these instructions to avoid personal w all instructions in this manual and the attached engine : Do not allow anyone to operate this equipment who has not fully read and comprehended the s ...
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Kunz MR55B - page 8
The tongue is equipped with a screw pin shackle clev is to provide movement in all directions on rough uneven ground. To prev rati on or debris, place the screw pin through the tow vehicle hitch and clev is and turn the screw pin until snug. The tongue is designed to adjust from left to right within the hitch pivot. This allows the mowers position ...
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Kunz MR55B - page 9
The cutting height can be adjusted in a range from 2. 0" to 8.0". This is accomplished by turning the height adjust cranks on bot h sides of the mower. See Figure 5 . Turn the cranks clockwise to raise the mower cutting height and counter-c lockwise to lower the mower cutting height. allow easier pivoting. Care should be taken not to loos ...
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Kunz MR55B - page 10
C. STAR : Set parking brake on tow vehicle. Tur on the underside of the gas tank. Set Set the th Start engine and allow engine to warm up. Set engine tch handle. (The clutch handle is located at the front of the mower under the engine.) CAUTION: If the rough cut mower from the uncut area before attempting to engage the clutch . Inspect the blades f ...
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Kunz MR55B - page 11
WARNING: Remove all objects from the work area that might be picked up and thrown by WARNING: Do not mow when child ren and others are around. WARNING: Do not fill fuel tank wh ile engine is running or hot. WARNING: Keep all safety shields and defle ctors in place during operation. CAUTION: Remove grass build up from under safe ty shields before ea ...
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Kunz MR55B - page 12
F. DRIVE aking any adjustments or repairs. Remov Loosen the nuts on the spring-loaded idler; adjust bol t until the belt can be slipped off the idler and h Slip the belt down under the drive sheav e and off the blade spindle sheaves. Install the new belt and then adj ust the tension as follows: See Figure 7. Take special care to make s er pulley. W ...
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Kunz MR55B - page 13
provide the appropriate braking force. If the spri ng length is to long it will be necessary to adjust the brake stud closer to the belt. If the spring length is to short it will be necessary to adjust the brake stud further away from t he belt. To make brake stud adjus tments loosen the bolt on the top of the brake stud and slide the br ake stud i ...
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Kunz MR55B - page 14
G. Sharp blades can cause bodily in jury if not handled properly. pened. Out of b bolts co CAUTION: Always properly tighten the blade bolts to the specified torque. Failure to do so can lead to saddle. The Models MR55K, MR55B and MR55T use the K unz Engineering Part # (202141) blade bolt. This particular hex head bolt is a 3/4” – 16NF x 1- 1/4? ...
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Kunz MR55B - page 15
ACREASE ROUGH CUT MOWER SPECIFICATIONS Model Model Model Mode l MR 55B-17.5H P MR 55B-22-23H P MR 55K MR55 T EN NE: GI En En Cy 2 2 Cycles Cran ksha ft Engine HP Bore 3.56” 3.57" 2.97" 3.03" St Di Oil 1.94 U. S. qt 1.5 U. S. qt 2 U.S. qt 2 U.S. qt Cr kshaf t D ia. 1.0” 1.0" 1.0" 1.0" Ke Cr 3.15” 3.15" 3.15&q ...
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Kunz MR55B - page 16
ACREASE ROUGH CUT MOWER PARTS LIST It e m Pa rt # De sc rip t i o n Quanti t y 1 2 140 21 Cu p W as h er 6 2 2 160 02 W ir e Lo ck P i n, . 3 1" x 2 . 50 " 2 3 2 160 09 S c re w P in S ha c k l e C lev i s 1 4 2 220 05 W or m D r iv e Hos e C la m p ( 7- 7/ 8" t o 9 - 1/ 8" Cl a m pi ng Di a. ) 2 5 2 250 03 Co m pr es s i on Sp ...
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Kunz MR55B - page 17
It e m Pa rt # De sc rip t i o n Quanti t y 3 1 6 001 89 I d l er S pac er Bl oc k 1 3 2 9 000 23 Co nt r o l P anel 1 3 3 9 0 0 04 9 Ba tt e ry Bo x A ssy. 1 3 4 9 000 58 Hi t c h P iv ot 1 3 5 9 000 61 P i v o t A r m 4 3 6 9 000 62 Hei g ht Ad ju s t Nu t 2 3 7 9 000 63 Cl ut c h A r m 1 3 8 9 000 65 I d l er A r m A ss y . 1 2 430 05 B r onz e ...
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Kunz MR55B - page 18
U ACREASE ROUGH CUT MOWER PARTS 10 2 3 4 5 6 7 8 9 1 11 12 13 16 14 15 17 19 20 21 22 23 25 26 27 28 29 30 41 24 32 33 34 35 36 38 39 40 44 45 43 42 31 18 37 17 ...
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Kunz MR55B - page 19
OPTIONAL EQUIPMENT OPTIONAL WETLANDS KIT The optional wetlands kit features an extra set of tires for added ground supp ort in soft or water saturated areas. The following are applications and features that the wetlands kit works best in. • Great for wetlands or marshy area s that stay wet all year around. • Works well in combination with small ...
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Kunz MR55B - page 20
OPTIONAL EQUIPMENT OPTIONAL ELECTRIC LIFT KIT The optional electric lift kit consists of all of t he mounting hardware, bracke ts, electric actuator and wiring with remote control panel. • Great for constantly changing te rrain and grass/brush heights. • Allows for quick cutting height changes on the go from the seat of the tow vehicle. • Rai ...
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Kunz MR55B - page 21
OPTIONAL EQUIPMENT OPTIONAL FLOATATION KIT The optional floatation kit consists of one additi onal front and rear tire, mounting brackets and hardware. • Great for mowing around ponds and on rough uneven ground where scalping would normally occur. • Clamping style receiver allows for adjustment s from side to side with both the front and rear t ...
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