6 ENGLISH
Maximum Speed Setting
Setting up Number 3
a. Keep "▼" button pressed for several seconds, until LED
indicates show "S.0".
b. Press "▲" button 3 times to indicate "S.3", which means
"Setting up No. 3".
c. Then press "▼" button and LED indicates "XX"(XX is 1-45),
which means the highest motor speed in RPM. ("45" means
4500rpm, and "10" means 1000rpm)
Press "▼/ ▲" to adjust the Maximum Speed from 100rpm to
4500rpm. The manufacturer's default setting is 3800rpm.
d. Setting will be automatically saved 5 seconds after no buttons
are pressed. The motor returns to "ready" status.
MOTOR
PULLEY
DIAMETER
MM / INCHES
55 = 2-1/8
50 = 2
925
60 = 2-3/8
1100
75 = 3
1375
80 = 3-1/4
1500
90 = 3-5/8
1625
100 = 4
1750
110 = 4-3/8*
2000
120 = 4-3/4*
2250
130 = 5-1/8*
2500
* Requires special pulley cover SM636 and special pulley bracket SM638.
Changing the Pulley
Remove pulley cover and pulley. Securely tighten the new chosen pulley.
Caution – Incomplete tightening may cause malfunctions. Also, be sure the pulley cover is correctly
positioned to avoid rubbing against the pulley or the V-belt.
STITCHES PER MINUTE AT 1000 RPM MOTOR SPEED
SEWING MACHINE HANDWHEEL PULLEY SIZE
60 = 2-3/8
65 = 2-5/8
850
775
1000
925
1250
1150
1350
1250
1500
1400
1650
1550
1850
1700
2050
1850
2250
2000
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80 = 3-1/4
100 = 4
625
500
750
600
935
750
1000
800
1125
900
1250
1000
1375
1100
1500
1200
1625
1300
default "ready" status
Either "P.d" or "P.u" will indicate
"ready" status, depending on
how the needle position is set.
alternate "ready" status
120 = 4-3/4
140 = 5-5/8
425
350
500
425
625
525
675
575
750
650
850
715
925
775
1000
850
1075
925
160 = 6-3/8
315
375
475
500
565
625
685
735
775
