ENGINE DRIVE CHAIN
Begin your procedure by parking your Crawler
on an open, firm, level surface. Shut off Engine,
engage your Parking Brake Lever and dismount.
Raise Hood and rotate it fully forward, remove the
#1688 Seat Pin. Then remove the #933A Seat &
#1674 Mounting Bracket, #1625 Arm Rests, and
#1608 Rear Cover.
NOTE:
Be sure to disconnect
the “mating” #1824 and #1825 Seat Wires at their
common Plug.
Check your #1804A Engine Drive Chain. Pull up
on the recoil starter rope to “tension” the Chain
and create slack (sag) in the Chain portion going
from #1801 Engine Sprocket to #1689 Idler
Sprocket.
This “sag” should be approximately 1/4” to 1/2”.
Though quieter operation results from a looser
Chain, it does present the rare chance for the
Chain to jump off it’s sprockets.
CHAIN ADJUSTMENT
To
loosen
or
tighten
the Chain, loosen the Lock-
nut securing the #1689 Idler Sprocket and slide
the Idler Sprocket assembly
forward
for Chain
loosening, and
rearward
for tightening.
NOTE:
When tightening the Idler in position, hold
the Locknut with one wrench, but “tighten” it with
a second wrench on the bolt’s head outside the
Crawler’s Body...this technique helps to keep the
Idler Assembly from “creeping out of position” as
you “securely” tighten it’s bolt.
CHAIN REPLACEMENT
Loosen the Locknut securing the #1689 Idler
Sprocket and slide this assembly forward. “Work”
the now loose Chain around so the Connector
Link is convenient to work on. Remove the Chain
Connector Clip and remove the Connector from
the Chain. Remove the Chain.
The new Chain is shipped from the factory as-
sembled...the Connector is already attached and
the Chain is a continuous loop. You have two
ways to install it:
1) You may install it much the same way a
Belt is installed...through the “slot” in left end of
#1643 Lower Power Shaft. You also need to pass
it around the right end of #1617C tube of the
#1617R Right Control Handle Assembly.
2) Alternately you can disassemble the
Chain’s Connector Link and open the Chain and
loop it around it’s various sprockets. Then join the
Chain’s ends with it’s Connector Link and secure
with Connector Clip.
The easiest is Step (2) above. It’s a little tricky be-
cause you have to compress “O” rings while you
put on its “flat spring” Connector Clip. Practice with
the Chain you took off; it will give you a chance to
practice and build confidence.
32
#1801
#1689
Locknut
#1804A
#1627
“Sag”
#1643
#1643
#1617C
Locknut
#1689
#1625
#933A
#1608
#1688
#1674
On
Off
#1824
#1825
Plug