Singer 252 - Page 47

m Hook Drive Belt
Removal:
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1) Loosen the 2 screws A
2) Loosen screw B.
3) Remove pulley C togethir with belt D.
Adjustment of belt tension:
Check:
Belt tensi on should be such that a load of 140 gr . centrally located between the pulleys . deflects
the belt 4.8 to 6.3 mm . (3 / 16 - 1/ 4) .
Setting:
1) Loosen screw B and rotate belt idler E until correct tensi on is ach ieved.
2) Tighten screw B.
Note: Alter adjusting belt tension . check and adjust hook timing as described in m
F OAM 723 (1172)