DR Power Walk-behind Pro - Manual (Page 20)

20 DR ®
FIELD and BRUSH MOWER
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(s), keeping it away from the spark plug(s).
2. Loosen the Lower Nut on the Spring side of the Bracket by 1/8" to 1/4", and then tighten the Nut on the Upper side against
the Bracket. Check the tension on the Wheel Clutch Lever and repeat the adjustment as needed.
Removing and Replacing the Drive Chain
Tools needed:
•
1/2" wrench or socket (Chain Cover)
•
Flat-head screwdriver
•
Needle Nose Pliers
1. Remove the Chain Cover (Figure 25).
2. Remove the Tensioner Spring (Figure 26)
.
3. Remove the Master Chain Link (Figure 27). First, remove the Lock Clip by
spreading the Clip with the Screwdriver and at the same time, slide the Lock
Clip back off the Master Link pins with the Needle Nose Pliers. Next,
remove the Side Plate, and then remove the Master Chain Link.
4. Slowly feed the Chain out.
5. Install and route the new Chain (Figure 26).
6. Add the Master Chain Link (Figure 27) in the reverse order of step 3.
7. Replace the Tensioner Spring (Figure 26).
8. Replace the Chain Cover and tighten the Lock Nuts.
If you over tighten the wheel clutch cable, the machine may lurch forward when shifting into gear. Use caution when shifting into
gear. Test adjustment using the procedure on page 19.
Chain Cover
Figure 25
Figure 26
Tensioner
Spring
Chain Routing
Figure 27
Lock Clip
Master Link
Side Plate