Safety & Operating Instructions

Self Tapping
Screws
Removing, Replacing and Adjusting the Drive Belt
Belt Guard
Inner Guard
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.
Use only MacKissic belts on your machine. The belts have been
thoroughly tested and proven for many hours of use.
Figure 21
Figure 22
Sheave
Straightedge
On side face
of Sheave
Straightedge
above Clutch
Pulley
Figure 23
Figure 24
Gap
Gap
Engine
Hardware
Belt Tensioner
Adjusting Nut
Belt
Clutch
Tools Needed:
 Tape Measure
 5/16" Wrench
 Two 1/2" Wrenches
 1/8” Allen Wrench (if necessary)
 Straightedge
Removing the Belt
1. Remove the two Self Tapping Screws using a 5/16" Wrench and remove the
Inner Guard (Figure 21).
2. Remove the Bolt, Washer and Locknut from the lower rear Belt
Guard mounting using 1/2" Wrenches.
3. Remove the two Locknuts and Washers from other two Belt Guard
mounting areas using a 1/2" Wrench.
4. Remove the Belt Guard.
5. Loosen the four Engine Bolts (two on the left side and two on the
right side) using 1/2" Wrenches (Figure 22).
6. Using a 1/2" Wrench, loosen the Adjusting Nut on the Belt
Tensioner to create about a 1/2" gap, then slide the Engine in until
the belt is loose enough to remove.
7. Remove the Belt from the Clutch and Sheave (Figure 23).
Installing and Adjusting the Belt
Note: The Belt Tensioner Adjusting Nut may need to be loosened up more per the
previous instructions, “Removing the Belt”, to enable you to install a new Belt.
1. Install the Belt onto the Sheave and Clutch.
2. Tighten the Adjusting Nut on the Belt Tensioner using a 1/2" Wrench to
take up the slack in the Belt, but not too tight at this point ( Figure 22 ).
3. Check the alignment of the Clutch with the Sheave by placing a
Straightedge against the Sheave outside face near, but not touching, the
Clutch Pulley ( Figure 23 ) .
4. Check the gap from the Straightedge to the Belt near the Sheave and
near the Clutch. If the gap is the same then no adjustment is needed. If
the gap is not the same then adjustment is necessary, correct the
alignment as follows:
a) Loosen the Sheave Hub Set Screws with a 1/8” Allen Wrench
( Figure 24 ).
20 MacKissic Gravity Self Feeding Chipper
Sheave
Hub
Belt
Set Screw
Key
Locknut and
Washer
Bolt, Washer
and Locknut
Engine
Hardware
Belt Tensioner
Adjusting Nut
Sheave
Straightedge
on side face
of Sheave
Straightedge
above Clutch
Pulley