Mighty Mac 824 RT Manuale utente

MIGHTY MAC

·z

MODEL 824RT RE AR-TINE TILLER

OWNERS

MANUAL

Phone: 215-495-7181

AMERIND-MacKISSIC

P,O, Box 111

Parkerford, Penna,

19457

Form 824-77

ASSEMBLY INSTRUCTIONS

Your MIGHTY MAC tiller has been shipped to you almost completely assembled, leaving only

the handles and control rods to install. Before beginning assembly, make sure all parts have been

received and are in good condition. If there are shortages or damage, notify the company from whom

you bought the machine, and the delivery agent at once.

(Note: In the following instructions, the "item" number refers to the number encircled for that part

in the illustrations).

1) Release the shipping straps holding your tiller to the skid.

2) The handles and swivel assembly (item

19,

figure

have been bolted to the right side frame of

the tiller for shipment. Remove the shipping bolt asshown in figure 1.

3) Install the swivel assembly to the tiller, asshown in figure 2 using the nut provided.

Fig. 1

Fig. 2

4) Position the handle height adjusting bolts asshown in Fig. 3. Use the shipping bolt and nut from

(2), above, and the matching bolt and nut from the small bag attached to the engine. We would

suggest you set the handles a little higher than a comfortable height to compensate for them

dropping a few inches when the Tines are in soil.

5) Install the Clutch Rod Swivel, (item 49, fig. 2) through the hole provided in the clutch lever plate

(item 44, fig. 2).

6) Insert the wheel engagement rod assembly, item 32, in the wheel engagement lever asshown in

fig. 14 using the

1/8/1

1/1

cotter pin from the small bag.

7) Install the throttle control assembly to the handle brace plate. Install the throttle cable clamp

(item 17, fig. 15), as shown.

-2-

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8) Remove the drag

bar

(item 13, fig. 6),

lift the hinged foot guard from it's

shipping position and re-install the foot

guard asshown in fig. 4.

9) Service the tiller transmission by

adding five

quarts of #90 gear lube or

SAE 50 wt. motor oil. The transmission

fill plug (item 64, fig. 5) is located on

the upper right side of the transmission

case.

10) Be sure to service the engine as

specified by the engine manufacturer

by filling the crankcase with 2% pints

of SAE 30 (or 10W30 or 10W40)

motor oil. Fill the gastank with

unleaded or regular gasoline.

Fig. 5

11) Your tiller now should appear as in fig. 6, below. Be sure to acquaint yourself thoroughly with the

Operating Instructions before using your tiller.

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Fig. 6

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OPERATING INSTRUCTIONS

Your Mighty Mac 824 RT tiller has been designed to be the smoothest operating tiller possible. It is

very easily controlled but, as with any machine, requires that you

familiarize

yourself with its features

-and

follow a few important rules to get the most from it.

To operate your tiller SAFELY, there are several cardinal rules you must follow:

1) NEVER ATTEMPT

TO TILL WITH THE WHEELS DISENGAGED.

2) NEVER START

THE ENGINE WITH THE CLUTCH ROD (item

46, fig. 12)

ENGAGED IN

FORWARD OR REVERSE DRIVE.

NEVER PUSH DOWN ON THE HANDLES HARD ENOUGH TO RAISE THE WHEELS

OFF THE GROUND.

To understand the importance of these rules, you should understand that the wheels are not intended

to pull the machine along; rather, they are there to hold back

against

the tines pushing the tiller forward.

For this reason, the wheels must be engaged and on the ground at all times; otherwise, the tines will

push it along too fast and the

tiller

will be out of control. Obviously, this creates a potentially

dangerous situation.

We have made

possible to

disengage

the wheels to make it easier to move the

tiller

about

with

the

engine "off". This is particularly useful in maneuvering the tiller in confined areas such as your garage

or tool shed or in moving it to and from your garden.

You may feel that the

tires

are installed backwards from the conventional way

tires

of this type

-are used. They are, however, correct as shown, because

oftheir function

of holdlngthe machTne -back:-

To start your

tiller

and get under way, first make sure the engine crankcase and tiller transmission

::=--=-_---==--=:case are:properl

lied with lubricant.

hen:---- -----:------.--------- ------------------: _

1) Make sure the clutch rod is in neutral.

2) Make sure the sheels are engaged by pushing "in" on the wheel engagement rod assembly, item

(fig.

and rolling the tiller ahead slightly until the wheels "lock". If

will roll

inches, the

wheels are not yet engaged. Continue to push

on the wheel engagement rod and roll the machine

forward until the wheels engage.

Open the engine throttle about half way and close the choke as shown in fig.

Fig. 7

-5-

4) Pull the starter rope to start the engine. Open the choke as the engine warms.

5) Set the throttle to the

desired engine speed. We

would suggest you start off

at a slow speed until you

become more familiar with

the performance of the

tiller and then adjust it to

your preference.

6) To engage the clutch for

forward drive, push the

clutch rod, item 46, forward

as far as it will go with mild

pressure. The clutch will

remain engaged in forward

drive until you pull the

clutch rod back to neutral.

7) To engage the clutch for

reverse drive,

pull back on

the clutch rod until reverse Fig. 8

is engaged. It will be necessary for you to hold the clutch rod in the reverse position. When you release

it, it will automatically spring back to the neutral position. This safety feature prevents the tiller from

backing in to you should you stumble or fall.

(Note: to prevent excessive belt wear, you should pause for a moment in neutral when changing from

forward to reverse).

I·

-6-

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To swing the handles approximately

30°

right or left, simply raise the handle swivel lever, item

20,

shown in fig. 8 and swing them to the position provided. The handle swivel lever will drop

into a matching slotwhen the proper postition is reached.

To adjust the drag barto control tilling depth, pull the drag bar lock pin, item

29,

out (to the left)

as illustrated in fig,

Slide the drag bar up or down, asdesired, to the preferred setting. Release

the lock

pin and make sure it engagesone of the holes in the drag bar.

Fig. 9

You will find that your tiller will till deeper with a lower drag bar setting. The drag bar servesto hold

the machine back allowing it to till more in each spot. By raising the drag bar, the tiller can move

forward easier and won't till as deeply.

It is very important that you remember the critical rules mentioned earlier:

1) NEVER ATTEMPT TO TILL WITH THE WHEELS DISENGAGED. (SEE STEP 2, ABOVE, TO CHECK FOR

WHEEL ENGAGEMENT).

2) NEVER START THE ENGINE WITH THE CLUTCH ROD ENGAGED IN FORWARD OR REVERSE DRIVE.

3) NEVER PUSH DOWN ON THE HANDLES HARD ENOUGH TO RAISE THE WHEELS OFF THE GROUND.

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MAINTENANCE INSTRUCTIONS

{

Your Mighty Mac tiller should require little routine maintenance or repair other than that necessary

for gasoline engines. These suggestions should help you keep your tiller running at peak efficiency:

Belt Tension Adjustment - Problems in the drive system can be due to a number of unusual conditions

that may be qu ite different from other belt drives you've encou ntered. Consu It the gu ide on page 11

before attempting to correct any problems or make adjustments.

Fig:10

-10-

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DRIVE BELT PROBLEMS AND HOW TO CORRECT THEM

NOTE: Before proceeding with analyizing the cause of any, problem and attempting to correct it, you should make sure

the enqi ne is in the correct location for the length of your belts. With the belt guard removed, press down on all

three belts so that they touch the horizontal tube on the belt engagement lever, item 42, fig. -10. The forward

idler pulleys, nos. 51 &'52 shouldonly move about

~"-%".

If more movement is observed, the engine should

be moved backward

1/16 ~1/a

loosening the engine base plate as shown in fig. 13. Whenever the engine is

moved, it will be necessary to re-adjust the linkage as shown in fig. 11 to insure the clutch will stay engaged in

forward drive. It is essential that the engine be in the correct position before proceeding.

PROBLEM CAUSE REMEDY

Extreme Belt Shrinkage Slide engine base rearward 1/16"-1/8",

Forward readjust linkage (fig. 11)

Drive Won't Clutch rod spring beneath operating Back off collar (item 48), fig. 12

panel too tight

Stay Engaged Improper linkage adjustment Adjust as shown in fig. 11

Forward Clutch Rod spring beneath operating Tighten collar (item 48), fig. 12

panel too loose

Drive Does Slide engine base rearward 1/16"·1/8",

not Disengage Belt shrinkage readjust linkage (fig. 11)

Reverse Drive Insufficient reverse Reposition reverse idler pulley

Slips

belttension ~

-- --

--~

(item 52, fig.-1O)--- -

- --

-----

--_

_._-

----.----

Reverse _SlidEulngintLbase rearward_JLtQ':~:.lL8-'-', _

': drive~d:Qes--~=-=--==== =~-Re'{e se-::t>..el.ts_hrinkag~~=_________________

not disengage -readjust forward linkage (fig:--1-1)-----

--------_

-._--

Engine stalls

with smoke All belts are too tight Slide engine base rearward and

and/or noise in readjust all linkage

belt area

One or both Engage forward drive and sight

forward belts along belts to verify they are

smoke but Pulley misalignment parallel with frame. If they are

linkage appears not, correct by moving the engine

normal pulley in or out as required.

Reverse belt Engage

reverse

drive and sight

smokes but Pulley misalignment along the belt as above. Correct

linkage appears by moving the engine pulley in or

normal

out as required.

Pushing clutch lever

to forward drive Reverse belt has slipped to Return reverse belt to top of reverse idler

position engages

reverse; clutch beneath

reverse

idler pulley pulley as shown in fig. 10.

in reverse

position does

nothing

When shifting

from reverse Clutch rod spring beneath operating Tighten collar as shown in fig. 12.

to neutral, panel too loose.

forward drive

is engaged

-11-

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