Kunz AcrEase C60H Bedienungsanleitung

60” FINISH CUT

OWNER’S MANUAL

With Assembly Instructions

For Model: C60H

KUNZ ENGINEERING, INC. / MENDOTA, IL 61342 / PH (815) 539-6954

12/04

ASSEMBLY INSTRUCTIONS

READ THE COMPLETE ASSEMBLY INSTRUCTIONS BEFORE STARTING THE ASSEMBLY.

You should have:

-one mower deck assembly

-two caster assemblies

-two rear axle 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.

2. Install the two caster assemblies in the retainers on the front of the mower deck. See figure 1.

Before securing the caster supports, determine which side of the mower the tongue will be

placed on and install the caster support stop on the tongue side. See Figure 2. Secure with

3/8” x 2-3/4” hex head bolt, lock washer, and nut provided in the retainer areas. Secure

remaining caster support with 3/8” x 2-1/2” hex head bolt, lock washer, and nut provided in the

retainer areas.

Note: The operator controls are on the front of the deck and the discharge chute is on the right

side. (Left and right are determined from looking in the direction of travel.)

Retainer Bolts Right Rear Axle Assy.

Direct Behind Tongue PositionOffset Tongue Position

Screw Pin

Shackle Clevis Tongue

Hitch Pivot – Attach

to either Left or R

Caster Assy.

ight

Right Caster Assy.

Figure 1. Assembly of Mower Wheels and ATV Tongue

3. Install the two rear axle assemblies in the retainers on the rear of the mower deck. The tire

should be to the left of the axle support. See figure 1. Secure with 3/8” x 2-1/2” hex head

bolt, lock washer, and nut provided in the retainer areas.

Note: Tighten the four wheel assembly pivot bolts so that the wheel assemblies will not flop

down when the deck is raised off the ground.

Caster Support Stop

Caster Support

Tongue

Figure 2: Installation of Caster Support Stop

B. INSTALLATION OF ATV TONGUE ASSEMBLY

1. The tongue can be installed either on the left or right caster assembly depending on how the

wing mower will be towed. See figure 1. Secure the hitch pivot on the chosen caster

assembly with the 3/8” x 2-1/2” hex head bolt, lock washer, and nut provided.

2. Install the tongue into the hitch pivot and secure by placing a 5/16” wire lock pin on each side

of the hitch pivot.

OPERATIONS AND ADJUSTMENTS

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.

Read all Owners Manuals before using equipment.

Know locations and functions of all controls before operating the mower.

A. ATV TONGUE CONFIGURATIONS

Shut off the engine and allow the mower blades to come to a complete stop before

adjusting the tongue.

When attaching the tongue to the back of the tow vehicle, tighten the screw pin

shackle clevis firmly. Property damage or bodily injury may occur if the screw pin

shackle clevis unturns and the wing mower becomes unattached from the tow

vehicle.

The hitching system is designed so that the wing mower can be pulled directly behind a tow

vehicle without a mower deck or as a left or right wing mower when towed behind a tow vehicle

with or without a mower deck.

Note: When pulling the wing mower directly behind, it is most maneuverable when the hitch

pivot is fastened on the left carrier arm. See Figure 1.When pulling the wing mower in

the offset position, it is most maneuverable to have the hitch pivot fastened on the right

carrier arm. See Figure 1.

The tongue is designed to adjust from left to right within the hitch pivot. This allows the wing

mower and tow vehicle, with a mower deck, to have proper overlap. Overlap is more critical in

tight areas where a lot of maneuvering is required. This overlap will eliminate most skips between

the tow vehicle and wing mower. In large open areas the overlap is not as critical and should be

adjusted to the user’s preference.

B. ADJUSTING CUTTING HEIGHT

Shut off all engines and allow the mower blades to come to a complete stop on the

wing mowers and on the tow vehicle before adjusting the cutting height.

The cutting height can be adjusted in a range from 1.0" to 4.0". This is accomplished by adjusting

the height adjusting bolts on each of the four corners of the wing mower. See Figure 3. Turn the

bolts clockwise to raise the mower cutting height and counter-clockwise to lower the mower

cutting height.

When more than one mower is used at a time, it is very important to have all the mowers adjusted

as close to the same cutting height as possible to obtain a high quality cutting job.

Adjust the mowers as follows:

1. Pull the mowing unit on to a smooth, level surface.

2. Adjust the tow vehicle mower deck (If applicable) to the desired cutting height and level both

fore and aft and side to side.

3. Measure the distance from the level surface to the mower blade cutting edge on the tow

vehicle.

Shut off tow vehicle engine and allow mower blades to stop completely before

attempting to measure the cutting height.

4. Adjust the cutting height on the wing mower so that it cuts at the same height as the tow

vehicle mower. Adjust each corner of the wing mower so that the distance from the smooth

surface to the bottom edge of the deck is equal to the cutting height minus 5/16”. The mower

blade cutting edge is 5/16” above the lower edge of the deck.

Note: To mow in the lower half of the cutting range, set the front caster axles in the bottom

setting and set the anti-scalp wheels in the top hole. To mow in the upper half of the

cutting range (original factory setting), set the front caster axles in the top setting and

set the anti-scalp wheels in the bottom hole.

Note: After the cutting height has been set, be sure to tighten the pivot bolts securely to

eliminate free pivoting of the front casters or rear axles. The front casters and rear

axles should not drop down when the deck is raised off the ground. Snug the four bolts

just beyond the height adjust bolt so the front casters and rear axles can be adjusted up

and down but cannot move from side to side.

Adjust Anti-Scalp Wheels

Under Deck to the Upper o

Lower Cutting Range

r Height Adjustment Bolts

Cuttin

Hei

Measure the Distance

and Add 5/16” to get

Cutting height

Mower Blade

Lower Edge

of Deck

Adjust for Upper or

Lower Cutting Range

5/16”

Smooth Surface

Snug 4 Bolts to

Eliminate Side

Movement

Figure 3: Adjusting Wing Mower Cutting Height

C. STARTING ENGINE

Set parking brake on tow vehicle.

Attach wing mower tongue to tow vehicle.

Do not start wing mower unless it is attached to the tow vehicle.

Set the throttle lever in the choke position to set the choke. (The choke is located beyond the

full throttle detent position.)

Start engine and move throttle toward slow position to disengage choke. The mower blades

clutch will engage as the engine comes up to speed. The mower blades clutch engages at

1850 RPM.

Slow engine speed to idle to allow engine to warm up. This will probably allow the mower blade

clutch to fully disengage.

Adjust engine speed toward fast to fully engage the mower blade clutch. (The full throttle is

located at the first detent position on the throttle control.)

Clutch overheating or failure may occur if engine is not run at full speed in heavy

load conditions.

The engine full speed setting with mower blades running is 3350 RPM.

D. SHUTTING OFF WING MOWER

Shift to neutral, disengage power to the mower deck, and set the parking brake

before dismounting the tow vehicle.

Set the throttle to slow so the mower blades clutch will disengage.

Allow engine to cool down for a short time before moving the throttle control

to the stop position.

E. MOWER OPERATION

Clean or replace any safety signs that are not readable or damaged.

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.

Do not fill fuel tank while engine is running or hot.

Keep all safety shields and deflectors in place during operation.

Remove grass build up from under safety shields before each use. Do not remove

safety shields while engine is running. Dry grass build up around belts and sheaves

can cause fires.

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.

Slow down and watch the ends of the wing mowers when making turns so objects

are not struck and/or run over.

Depending on the number of wing mowers being towed, it is usually more efficient to mow the

large areas first with the full system. Once the large areas are completed, mowers can be

dropped off to mow narrower areas.

Look down, to the sides, and behind before and while backing to avoid backing over

something or someone. Care should also be taken while backing so that the wing

mower or mowers do not jackknife and damage hitches.

Backing up with one wing mower is easy. Backing becomes a greater challenge as additional

wing mowers are towed. Avoid backing up by planning ahead. Make loops instead of backing.

Stop the mower blades on both the tow vehicle and all wing mowers if the tow

vehicle becomes stuck or stops going forward because of loss of traction. Shut off

the engines on the wing mowers before attempting to push or pull the tow vehicle.

Do not turn too sharply when the wing mowers are pulled in tandem or pulled behind

a zero turn mower. Sharp turns can force the mowers into each other causing

damage to the hitches.

Listen to the wing mower engines while mowing. The engines should run free and not work too

hard. Working the engine too hard will cause overheating and premature failure.

Do not allow material to build up on the air inlet to the engine cooling system. If the wing

mowers are towed with one on the left and one on the right side, there will be a lot of material

blowing around the right wing mower engine. Special care should be taken to make sure the

engine is getting enough inlet air. Do not allow the engine cooling fins under the shroud to be

blocked. Air flow over the engine will be restricted causing the engine to overheat.

Mowing to fast in very heavy, long grass can cause the wing mower engine to pull down and

disengage the blade clutch. The engine can then start to accelerate again while slipping the

clutch. Small amounts of clutch slippage for a few seconds will not cause damage. If the clutch

is allowed to slip for longer periods, it will overheat and could be damaged. Watch the discharge

chute; if material is not being discharged, then the clutch is slipping. In normal conditions, clutch

slippage will not be a problem. In most cases the clutch can be repaired by replacing the clutch

springs and clutch bearing.

If the mower blades are allowed to stall out (stop turning) at engine speeds above

the clutch engagement speed, this will cause the clutch to slip. If the clutch is

allowed to slip for more than five minutes, the clutch will get red hot and could cause

the drive belt to start burning.

F. DRIVE BELT REMOVAL AND TENSION (Refer to Figure #4)

Shut off engine and allow mower blades to stop turning before making any

adjustments or repairs.

Front

Engine

Initial Spring Length 15/16”

Running Spring Length 1-1/8” to 1-1/4”

Figure 4: Belt Pattern and Spring Adjustment

Remove the safety shields.

Loosen the nuts on the spring-loaded idler; adjust the nut until the belt can be slipped off the

idler and drive sheaves.

Slip the belt down under the drive sheave and off the blade spindle sheaves.

Install the new belt as follows:

Adjust the spring-loaded idler springs to a compressed length of 15/16” initially for a few hours

until the belts run in; then adjust the spring to 1-1/8” to 1-1/4” compressed length.

G. MOWER BLADE REMOVAL, BALANCING & INSTALLATION

Sharp blades can cause bodily injury if not handled properly.

When removing the blade, it is recommended that a block of wood be placed between the blade

and the underside of the mower deck. This will allow the removal of the blade without the need to

hold the blade by hand.

Always balance the mower blades each time they are sharpened.

Out of balance mower blades cause excess vibrations which lead to premature bearing failures,

bolts coming loose, and overall deterioration of the wing mowers.

Always properly tighten the blade bolts to the specified torque. Failure to do so can

lead to unwanted loosening of the blade and damage to the blade holding saddle.

The Model C60H uses the Kunz Engineering Part # (202136) blade bolt. This particular hex head

bolt is a 1/2” – 20NF x 1.00” long, grade 5 and it’s proper torque is 85 ft-lbs.

To ease in the blade installation process, use the same block of wood and method used during

the removal of the blades.

H. LUBRICATION

There are up to six lubrication points on the wing mower -- one spring-loaded idler pivot, two

caster wheel pivots, and three blade spindles (on models that apply). Lubricate at approximately

10 hr. intervals or more often as required in dusty conditions. Lubricate the blade spindles 2-5

pumps every 50 hours. (The bearings have trash guard seals to hold the seals in place during

lubrication.) Lubricate with a high grade of pressure gun grease.

Note: Do not over grease blade spindles. Blade spindles are initially greased at the factory.

Greasing before 50 hrs. may cause bearing seal damage which will result in premature

bearing failure.

I. TIRE PRESSURE

To reduce wing mower bounce on rough yards, the rear tire pressure can be reduced so they

feel slightly soft (approximately 15 PSI) when they are stepped on.

J. TRANSPORTATION OF MOWER

When transporting the mowers between jobs turn off the fuel shut-off valve below the fuel tank.

M. STORAGE

If the mower is stored outside, the engine should be covered to prevent water from getting inside

the engine during heavy rainstorms. See the Engine Manual for additional information.

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