Replacing The Bar And Chain - Toro 51888 Operator's Manual

1. Sprocket
2. Spacer
3. Remove the spacer (Figure 31).
4. Remove the sprocket.
5. If the wear marks on the sprocket are deeper than 0.5 mm
(0.02 in) it should be replaced (Figure 31).
A. Place the new sprocket on the crankshaft.
B. Place the spacer and clip onto the new sprocket.
C. Install the guide bar and the chain.
D. Check the chain tension; refer to Adjusting the Chain
Tension (page 14).

Replacing the Bar and Chain

Service Interval: Before each use or daily
Before each use or daily
DANGER
Contact with the chain saw teeth can cause serious
injury.
•
Remove the battery before performing any
adjustments or maintenance to the chain saw.
•
Always wear gloves when performing any
adjustments of maintenance to the chain saw.
1. Place the chain saw on a level surface.
2. Remove the battery.
3. Remove the two nuts that secure the cover (Figure 32).
Figure 31
3. E-clip
G025216
1. Cover
4. Loosen the chain by turning the chain-tightening screw to
the left (Figure 33).
Note: The blade bar will move closer to the drive
sprocket.
1. Sprocket
2. Tensioning bolt
5. Separate the chain from the blade.
6. Align the bar with the two studs and the adjusting pin (Figure
33).
7. Place the new chain around the drive sprocket, with the
teeth of the chain facing away from the sprocket (Figure 33).
8. Feed the chain into the groove in the blade bar.
9. Install the cover and the nuts, but do not fully tighten the
nuts.
10. Hold up the tip of the bar (Figure 34).
15
Figure 32
2. Nuts
Figure 33
3. Stud (2)
4. Adjusting pin
1
2