DR Power Tow-Behind All Terrain - Manual (Page 15)

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Chapter 4: Maintaining the DR 7.25 ALL-TERRAIN TRIMMER/MOWER
Regular maintenance is the way to ensure the best performance and long life of your machine. Please refer to this manual for
maintenance procedures.
Regular Maintenance Checklist
Note: Consider that the service intervals shown are the maximum under normal operating conditions. Increase frequencies under
extremely dirty or dusty conditions.
P ROCEDURE B EFORE E ACH
U SE
E VERY 20
H OURS
E VERY 50
H OURS
E VERY 100
H OURS
Check Engine Oil Level. 
Clean Engine Exterior, Cooling Fins and remove collected grass trimmings.* 
Check General Equipment Condition, e.g. Nuts, Bolts, Welds, etc. 
Replace broken or frayed Cutting Cords. 
Check the Mow-Ball ® for excessive wear. 
Check the Trimmer Belt for stretching or damage. 
Change the Engine Oil 1 st time 5
hours

Replace the Engine Air Filter Cartridge and foam Pre Filter if equipped. 
Replace the Trimmer Belt 
Clean and inspect Cord Head assembly 
Replace the Spark Plug. 
* Cleaning the top of the Engine during use is critical for proper air flow. Keeping the Engine clear of debris is necessary for
optimum performance.
Greasing the Wheels and Caster Wheel Support
Tools needed:

Grease gun

Lithium grease
 Clean cloth
1. Apply general-purpose lithium grease to the Wheel Bracket Grease Fitting
and the Caster Wheel Grease Fitting using a grease gun (Figure 21).
2. Apply general-purpose lithium grease to the Tracking Wheel Grease Fitting
using a grease gun (Figure 22).
Tracking
Wheel
Grease
Fitting
Figure 22
Figure 21
Caster Bracket
Grease Fitting
Caster Wheel
Grease Fitting
Shut off the Tow Vehicle, set the parking brake and remove the Key. Shut off the Trimmer Engine and after all moving parts to
come to a complete stop, wait five minutes before performing any maintenance procedure or inspection on the Trimmer.