DR Power 18 HP (June 2004 - Present) - Manual (Page 24)

INSTRUCTIONS FOR ADJUSTING OR REPLACING BELT
BELT ADJUSTMENT
The belt on your chipper should deflect 3/8” under three pounds of pressure as shown in figure
1 below. If it doesn’t, adjust per the following directions.
CLUTCH DRUM
BASIC CHIPPER
PULLEY
STRAIGHT EDGE
3/8"
3 LBS. PRESSURE
REQUIRED TO
MOVE BELT 3/8"
Figure 1
• Remove belt guard.
• Loosen engine bolts.
• Tighten or loosen the nut on the belt tensioner until you have the correct tension as
shown in figure 1.
• Retighten engine bolts.
• Check alignment of the clutch with the drive pulley by placing a straightedge across both
faces as shown in figure 2. If adjustment is necessary, correct alignment by moving rotor
pulley in or out on the rotor shaft. Do not make adjustment by moving the clutch on
the engine shaft.
• Replace belt guard.
CLUTCH
ROTOR
PULLEY
BELTS
STRAIGHT EDGE
Figure 2
BELT REPLACEMENT
• To replace the belt, follow the above belt adjustment directions.
• After you have loosened the engine bolts, remove the old belts and replace them with
new belts. Always replace both belts as they come in a matched set. This is
required for proper operation.
• Set belt tension and alignment per above directions.
NOTE: Check and re-tighten belts after initial break-in period, one hour of use.
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