Installation Instructions

Inspecting the Gearcase
1. Inspect the g earcase castings for fla ws or
scratc hes in the g ask et surface area, and re place
the castings if necessar y .
2. If the g earcase has a g ask et and y ou plan to
reuse the castings , clean the mac hined surfaces
with a liquid g ask et remo v er .
Note: Do not clean the oil from the
pressed-in output bushings .
3. If the g earcase does not ha v e a g ask et but
has a sealant, re place the g earcase halv es with
the new g earcase half assemblies (par t nos .
108-7324 and 108-7326).
Note: T he new g ask et will not fit on the old
g earcase castings .
4. Inspect the 2 g ears , 4 bronze bushings , 2
shafts , and 3 oil seals for w ear or damag e , and
re place them if necessar y .
Installing the Gasket and
Assembling the Gearcase
1. Assemble the g ears and shafts into the
left-hand g earcase half .
2. Apply a dab of silicone sealant to the mac hined
surface of the left-hand g earcase half at the top
and bottom of the oil seal.
Note: Use Loctite 598 or an equi v alent
automoti v e R TV silicone sealant. Do not use
silicone sealant anywhere else on the mac hined
surface .
3. Carefully align the new g ask et onto the
left-hand g earcase half . T he exter nal loop in
the g ask et can be bent up on the perforated
fold lines .
Press the g ask et do wn into the 2 dabs of
sealant so that the sealant flo ws around the
g ask et edg es .
4. Carefully align the right-hand g earcase half .
Note: Do not disr upt the g ask et.
5. If y ou reuse the left-hand casting, thoroughly
clean the screws and apply a thread loc k er
(Loctite 242 or an equi v alent) before
assembling them.
Note: Y ou do not need to do this ste p if y ou
are using a new left-hand casting .
6. Star t the 9 screws b y hand to a v oid cross
threading, and tor que them in sequence to 135
to 165 in-lb (17.0 N·m).
7. R emo v e the exter nal loop of the g ask et b y
cutting along the perforations .
8. Assemble the aug ers to the g earcase .
Installing and Filling the
Gearcase
1. Install the aug er assembly in the sno wthro w er;
refer to the ser vice man ual.
2. Mo v e the sno wthro w er to a lev el surface .
3. R emo v e the pipe plug from the g earcase .
4. Add g ear oil 80W -90 until it begins to flo w out
of the fill hole .
5. Apply a thin coating of thread sealant to the
pipe plug threads before installing the pipe
plug .
6. T or que the pipe plug to 80 to 90 in-lb (9.6
N·m).
7. Coat the impeller shaft with an anti-seize
compound before installing the impeller pulley .
8. Install the pulley .
Note: Before tightening the square head
set screws on the impeller pulley , remo v e all
end pla y from the impeller shaft b y pulling
it to the rear while tur ning the shaft slo wly
in a cloc kwise direction (from the operating
position) and push the pulley forw ard ag ainst
the thr ust w asher; refer to the ser vice man ual.
9. Tighten the set screws .
Note: Chec k the g earcase fluid lev el during
setup , after ev er y ten operating hours , and after
ann ual storag e .
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