Service Manual
The arm shaft should not have any perceptible shake or end play when assembled in the
machine and should rotate freely without binds.
1. Remove bed bottom cover, extension table bottom cover,
arm top cover and right side cover.
2. Check for arm shaft end play by pushing the hand wheel left to right and adjust if
necessary.
1. Loosen set screw (G) in arm shaft collar (F).
2. Push arm shaft (C) to the left by means of the hand wheel.
3. Through the access hole in the front of the casting insert a 0,23 mm (.009") shim gauge
between the plastic washer (H) and the needle bar crank ( I ).
4. While maintaining the position of the shim gauge, pull the arm shaft (C) to the right by
means of the hand wheel.
5. Loosen the screw (B) on the bevel gear (A) and lightly move bevel gear (A) to the left until
it just touches vertical shaft gear (D).
6. Tighten screw (B).
7. Remove the shim gauge and lightly move the arm shaft (C) to the right.
8. While maintaining the position of the arm shaft to the right, bring collar (F) to the left
until they just touch the bushing in the casting.
9. Tighten then the collar set screw (G) making sure one of them is located on the flat of
arm shaft (C).
Check:
Adjustment:
Bevel Gear Mesh
and Arm Shaft End Play
55
Rev. n .
o
358487-001 Mar./2005
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