DR Power 9 HP Pro (March 2010 - June 2012) - Manual (Page 14)

14 DR ® STUMP GRINDER
Chapter 4: Maintaining The DR STUMP GRINDER
Regular maintenance is the way to ensure the best performance and long life of your machine. Please refer to this manual and the
engine manufacturer's owner's manual for maintenance procedures. Service intervals listed in the checklist below supersede
those listed in the engine manufacturer's owner's manual.
Regular Maintenance Checklist
P ROCEDURE B EFORE
E ACH U SE
E VERY 25
H OURS
E VERY 60
H OURS
E VERY 100
H OURS
Check Engine Oil Level 
Check General Equipment Condition 
Check Cutting Teeth (are they dull or damaged) 
Clean Engine Exterior & Cooling Fins 
Remove debris wrapped around Cutter Head for Bearing protection. 
Check Tire Pressure 
Replace Belt if stretched or worn 
Clean Air Filter 
Lubricate Cables (SAE 30 Oil) 
Change Engine Oil 1 st time 5
hours

Replace Cutting Teeth (or sooner if dull or damaged) 
Check Cutter Head when Teeth are replaced 
Replace Cutter Head (order kit # 271621) 
Replace Spark Plug 
Replace Air Filter 
Removing and Replacing the Engine Oil
Tools and Supplies Needed:
 14mm Wrench

1/2" Wrench (electric start only)

Rags and approved Container (for waste oil)

Small funnel
 Engine Oil (see your Engine Manual for Oil specifications)
1. For Electric Start machines you will first need to disconnect the Battery
Terminals and remove the Battery Bracket by removing the two Locknuts
from the Bracket Studs with a 1/2" Wrench (leave Battery attached to
Bracket) (Figure 16).
Battery Bracket
Figure 16
Locknuts
inside Frame
Battery
Terminals
Before performing any maintenance procedure or inspection, stop the engine, wait five (5) minutes to allow all parts to cool.
Disconnect the spark plug wire, keeping it away from the spark plug. Disconnect the Battery Terminals (Electric start only).
The Frame and Engine must be level to get an accurate reading when
adjusting the oil level. Use blocks to adjust the height of the cutting head to
level the Frame.