Place the engine inside the plastic bag supplied to you in the sub bag.
Push the end of the crankshaft through the plastic bag until the end of
the crankshaft and the special cutoff nut protrude through the bag.
Make sure the hole is tight around these parts to prevent metal
shavings from going into the engine.
Take your time to do this step. Cut the crankshaft flush with the end of
the special cutoff nut using your Dremel tool. Don't slip and damage the
flywheel clutch pin while cutting. WARNING! Never work with a power
tool without wearing safety glasses or goggles! Make sure all parts of
your body and any clothing are away from the Dremel tool and the
cutting area to prevent injury.
After you have cut the crankshaft, clean off all the metal shavings from
the part. Then remove the engine from the bag. Unthread the special
cutoff nut, remove the flywheel, collet spacer and collet. Take the #7603
clutch nut and see if the clutch nut will thread onto the crankshaft easily.
If not, then put your motor again into the plastic bag to protect it from
metal shavings, with the cranshaft sticking out, and file or grind the
crankshaft a little from the top of the first threads. Do not damage the
threads.
BEFORE CUTTING
AFTER CUTTING
21
s t e p 3
FLYWHEEL ASSEMBLY
This step is only for standard engines which
needed the crankshaft cut.
Reinstall one #7618 collet spacer followed by
one #7618 collet.
Install the #7610 or 7612 flywheel followed by
the #7603 clutch nut. Tighten the clutch nut
securely down, locking the flywheel to the
collet. Get it as tight as you can.
Continue to Step 5 for Clutch Assembly.
7618 spacer
7618 collet
flywheel
7610 (non pull start)
7612 (pull start)
7603
3
s t e p 2
CUTTING THE CRANK
Items needed:
Dremel tool.
Fiber reinforced cutoff wheel. WARNING! For your own safety, we
recommend using only the fiber reinforced wheels, not the cutoff
stones. The cutoff stones can shatter and cause injury.
Safety glasses or goggles.
Install the fiber reinforced cutoff wheel on the Dremel tool and put
on your safety glasses.
On the gas engine install one #7618 or #7617 spacer, one #7618
collet, and your #7610 or #7612 flywheel. The flywheel will fit over
the collet (they are a tapered wedge fit). Now install the #7620
cutoff nut so the threaded end is away from the flywheel.
7618 spacer
(silver color)
7618 collet
flywheel
7610 (non pull start)
7612 (pull start)
7620 cutoff nut
Dremel
Fiber reinforced
cutoff wheel
PICCO ONLY
7617 Picco spacer
(gold color)
stock Picco collet
(comes with engine)
I f y o u r e n g i n e i s a :
D Y N A M I T E E N G I N E
A S S O C . O R T H U N D E R T I G E R E N G I N E
s t a r t a t S t e p 5
s t a r t a t S t e p 6
s t a r t a t S t e p 2
O . S . , T O P , N O V A R O S S I O R P I C C O
O . S . , T O P , N O V A R O S S I O R P I C C O
