Brother b837 - Ffi) Knife Drcving Lever Adjustment; IE) Knife Mam Lever Roller

[ill KNIFE MAIN LEVER ROLLER
1.
2.
3.
•
0
Auxtltary lever
Dam pe r screws
Install the knife return spnng .
Pm lever woth scr ew
/
Kntfe drtvmg pan
e K ntfe r eturn tng pa rt
(A)
Otagram of kntfe drtvtng cam
Check that the knife ma1n lever shaft 0 to support f) gap is 5 mm . (Loosen screw 0 to adJUSt.)
Press the ma~n lever shaft 0 . turn the pulley. and turn stopper screw 0 so the main lever roller easily enters the kn1 fe
drivtn g arm recess.
Tighten
the nut on the stopper screw 0 so t hat the screw w1ll not l oosen after the adJuS t ment 1s completed .
[j]] KNIFE DRIVING LEVER ADJUSTMENT
* Knife dr iving lever
0.5 mm
0
1. When the ma1n lever shaft 0 tS at res t. the kn1fe dnv ing lever f) to movab le knife base bracket 0 gap should be 0.5 mm.
Loo sen screw 0 to adJ USt the knife dnv•ng lever f) .
2. Be s ur e t her e is no play parallel to the shaft 1n th e pin lever 0 and knife dn ving lever f) .
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From the library of: Superior Sewing Machine & Supply LLC