BlowerAssembly
5. Remove the blower belt guard and set aside.
IS5OOZ, IO00Z, ISlOOOZ, IS1500Z, IS2OOOZ,
IS3OOOZ, IS3100Z, S150X, S2OOX Series Models:
6. install the impeller drive pulley (A, Figure 11) onto
the impeller shaft (B) as described in Figure 11.
install the 1/4" x 1-1/2" long key (not shown) in the
pulley.
7. Align the pulley groove with the appropriate slot as
described in Figure 11. Tighten the set screws in
the pulley.
8. Reposition the 3/8-16 x 6" bolt if required to line
up with the pulley groove.
IS4500Z Models:
9. Loosely install the tapered hub (A, Figure 12) into
the blower pulley (D). install the blower pulley onto
the impeller shaft (E) and slide the blower pulley in
towards the blower assembly.
10. Position the new blower drive belt (B, Figure 12) in
the blower drive pulley.
11. Position the blower pulley (D, Figure 12) so it is
center with the belt keeper bolt (F). install the 1/4"
X 1-1/2" long key (C) into the blower pulley (D).
12. install the two (2) 1/4-20 X 1" bolts (B) into the
tapered hub (A) and tighten evenly. Torque the
1/4" bolts to 8 ft. Ibs. (10,9 Nm).
All Models:
13. Check the position of the idler pulley (A, Figure
13). The position must be aligned with the
position of the pulley (outer row of holes for pulley
hub pointing in, inner row of holes for pulley hub
pointing out). Reposition if necessary.
!JHubpointing iN:" i
44" Models
48" Models
61" IS3OOOZL Model ONLY
61" IS3100Z Models
Hub pointing OUT:
52" Models
All other 61" Models
inner Slot
Outer SRot
"_ 00_All n ulle roove
OR inner slot with
-_L ) pulley hub out)
Figure 11. Install Impeller Drive Pulley
Figure 12. Install Impeller Drive Pulley (IS4500Z
Models Only)
A. Tapered Hub
B. 1/4-20 X 1" Bolt
C. 1/4 X 1-1/2" Long Key
D. Blower Pulley
E. impeller Shaft
E Belt Keeper Bolt
Outer
Figure 13. Check Idler Pulley Position
A. Idler Pulley
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