Safety & Operating Instructions

Removing and Replacing the Clutch

The flywheel will still rotate for A WHILE after the engine is shut off. Shut down the engine, wait for all moving parts to come

to a complete stop, remove spark plug wire, then wait 5 minutes before moving or working on the chipper.

The design of the Clutch on your machine is for rugged, dependable service; however, it is important to understand the

limitations of a Clutch. The Clutch provides load free starting of the Engine and provides slippage under excessive

overloading of the driven application. These features help protect the Engine from damage such as broken crankshafts

and starters. The Shoes and Springs on the Clutch are normal wear items. If you notice decreased performance of the

Clutch, check and replace them if necessary.

The Clutch obtains its power from the Engine RPM. The lower the engagement speed, and the higher the maintained

Engine speed, the more torque the Clutch can transfer to the driven unit. NEVER operate the MACKISSIC GRAVITY SELF

FEEDING CHIPPER Engine at less than full RPM when chipping.

Note:

At engine start-up, the engine of your chipper operates under no load until approximately 1800 RPM, at which speed the

centrifugal clutch engages and begins driving the rotor.

 Do not tamper with the engine’s governor setting. The governor controls the maximum safe operation speed and

protects the engine. Over-speeding the engine is dangerous and will cause damage to the engine and to the other

moving parts of the machine. See your authorized dealer for any engine governor adjustments.

 Become familiar with successful operating conditions and avoid those that can overload and damage the machine.

 Do not overload or attempt to chip material beyond manufacturers recommendation. Personal injury or damage

to the machine could result. Learn to recognize the sound of the machine during an overload condition. Only

your operator experience will tell you how fast you can successfully feed material into the machine.

 If overloading or any other cause jams the machine, stop the machine immediately. If you jam the machine and do

not stop the engine, it can burn the drive belt and/or ruin the clutch. Clutch damage can be costly and it may not be

covered under warranty. For this reason, it is important that you immediately shut off the machine if it becomes

jammed.

 The centrifugal clutch on this machine is permanently lubricated and does not require oil or grease. If, after long

periods of

use, the drum wobbles excessively, replace the clutch assembly. Always replace shoes and springs in sets.

Whenever shoes

are changed, replace all springs.