DR Power 16.50 Pro - Manual (Page 37)

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4. Loosen the four Engine Bolts (two on the left side and
two on the right side) using two 1/2" Wrenches, one
on the Bolt and one on the Locknut underneath the
Base (Figure 29).
5. Loosen the Adjusting nut on the Belt Tensioner using
a 1/2" Wrench and slide the Engine away from you
until the belt is loose enough to remove.
6. Remove the Belt from the Clutch and Sheave (Figure
30).
Installing and Adjusting the Belt
NOTE: The Belt Tensioning 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.
3. Check the alignment of the Clutch with the Sheave by
placing a Straightedge across the Sheave side face
(closest to the Chipper Assembly) and resting the
other end on top of the Clutch Pulley (Figure 30).
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 Bushing Bolt with a 7/16"
Wrench (Figure 31).
b) Remove the three Bushing Retaining Bolts using a
7/16" Wrench.
c) Reinstall the three Bolts in the unused Threaded
Holes adjacent to the three Bushing Retaining Bolt
holes.
d) Slowly tighten the Bolts evenly and alternately (1/4 to 1/2 turn) starting with the Bolt farthest from
the Bushing Saw Slot (this acts as a Hub puller) until the Bushing releases from the Flywheel
Shaft.
e) When the Sheave is loose, remove the three Bolts and reinsert them into the original Retaining
Bolt holes.
f) Using a Straightedge, align the Clutch and Sheave by moving the Sheave in or out on the Flywheel
Shaft. Do not make the adjustment by attempting to move the Clutch on the Engine Shaft.
Straightedge
On side face
of Sheave
Figure 30
Sheave
Belt
Clutch
Gap
Gap
Straightedge
On Top of
Clutch Pulley
Belt Tensioner
Adjusting Nut
Figure 29
Engine
Bolts
Belt
Clutch
Sheave
Figure 31
Sheave
Bushing
Bolt
Bushing
Retaining
Bolts
Sheave
Bushing
Bushing
Saw Slot
Flywheel
Shaft