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Model W1706 (Mfg. Since 8/10)
SERVICE
3. With the blade installed and properly tensioned, hold a straightedge close to the center of both
wheels. Make sure the straightedge fully extends across the wheels, as shown in Figure 61 on the
previous page.
— If the wheels are coplanar (see Figure 62, "A"), the straightedge will evenly touch the top and
bottom of both wheels.
— If the wheels are not coplanar (see Figure 62, "B"), place the straightedge on the lower wheel
first (ensuring that it touches both the top and bottom rim), then adjust the upper wheel
tracking knob to make the upper wheel coplanar with the lower wheel.
— If the wheels are coplanar (parallel with each other), but the straightedge does not touch the
rims of both wheels (see Figure 62, "C"), then shim the wheels as instructed on the next page.
Coplanar
Straightedge
Contacts Top
And Bottom of
Both Wheels
Straightedge
A
Not Coplanar
Straightedge Only
Contacts Bottom
Wheel. Top Wheel
Needs to Be Tilted.
Solution:
Adjust
Tracking
Knob
B
Parallel, Not
Coplanar
Straightedge
Does Not
Contact Rims
Of Both Wheels
Solution:
Shim Wheel
Out
C
Figure 62. Coplanar conditions.