Instruction/ maintenance manual of the product 3914 Chicago Electric
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SEWING MACHINE - SINGLE NEEDLE Model 3914 ASSEMBL Y AND OPERA TION INSTR UCTIONS Due to continuing impro vements , actual product may diff er slightly from the product described herein. ® 3491 Mission Oaks Blvd., Camarillo , CA 93011 Visit our website at: http://www .
P age 2 SKU 03914 For technical questions, please call 1-800-444-3353. Specifications Machine T ype Heavy duty , industrial sewing machine; high speed, single needle-lock stitch Drive V -belt dr iv en Action F oot pedal operation, along with a knee and manual lifting arm for presser f oot.
P age 3 SKU 03914 For technical questions, please call 1-800-444-3353. 6. Dress properl y . Do not wear loose clothing or jew elr y as they can be caught in moving par ts. Protective , electr ically nonconductiv e clothes and nonskid footw ear are recom- mended when working.
P age 4 SKU 03914 For technical questions, please call 1-800-444-3353. ph ysician(s) before using this product; operation of electr ical equipment in close proxim- ity to a hear t pacemaker could cause interf erence to or failure of the pacemak er . Note : P erf or mance of this tool ma y vary depending on variations in local line v oltage.
P age 5 SKU 03914 For technical questions, please call 1-800-444-3353. Sewing Machine Motor P ower Switch Knee Lifting Arm f or Presser Foot T able Stand and T op (not provided) Assembl y The assembly instructions describe mounting the Single-Needle Sewing Machine (Model 03914) to the T able Stand (Model 03929), not included.
P age 6 SKU 03914 For technical questions, please call 1-800-444-3353. REV 04/03, 05/03 7. Tilt the machine back to e xpose the Oil P an (D). See figure 5. 8. Fill the Oil P an with sewing machine lubrication oil (#7 white oil) to the “high” mar k “A”.
P age 7 SKU 03914 For technical questions, please call 1-800-444-3353. REV 03/04 P ower Switch 13. Mount the P ow er Switch under the table top , on the operator’ s side. Use the supplied hardware . Mounting the Thread Stand Note: Th e Th read Sta nd is desi gned to be mo un ted on the T ab le Sta nd Kit (M odel 03929-not included).
P age 8 SKU 03914 For technical questions, please call 1-800-444-3353. Operation Caution: T o pr operly break-in y our new sewing machine, and av oid possible damage to the machine, sew at moderate to slow speeds for the fir st 15 minutes of use . Bobbin Winder Operation The Bobbin Winder assists in winding thread onto the Bobbin.
P age 9 SKU 03914 For technical questions, please call 1-800-444-3353. Winding Thread Onto the Bobbin 1. Place a Bobbin onto the Bobbin Winder Shaft (5) as shown at point d in Figure C , right.
P age 10 SKU 03914 For technical questions, please call 1-800-444-3353. Threading the Machine Head Set the thread spool on its holder and guide the thread through the machine as illustrated abov e. The numbers in the illustration indicate the threading sequence .
P age 11 SKU 03914 For technical questions, please call 1-800-444-3353. Changing the Thread T ake-up Spring Stroke and Pressure 1. Loosen Set Screw (2). 2. T o increase the stroke, turn the T ension Knob Screw (3) cloc kwise (A). 3. T o decrease the stroke, turn the T ension Knob Screw (3) countercloc kwise (B).
P age 12 SKU 03914 For technical questions, please call 1-800-444-3353. tightness, mo v e the F eed Eccentric Cam down (counterclockwise). Adjusting the Height of the Feed Dog The F eed Dog is f actor y adjusted so that it juts out from the Throat Plate surf ace 0.
P age 13 SKU 03914 For technical questions, please call 1-800-444-3353. Adjusting the Presser Bar Height 1. Loosen Set Screw (1) and man ually adjust the Presser Bar height, and the angle of the Presser F oot. 2. After adjusting, securely tighten the Set Screw (1).
P age 14 SKU 03914 For technical questions, please call 1-800-444-3353. R e f . A m t . No. P ar t No. Description Req. ARM BED P ARTS LIST.
P age 15 SKU 03914 For technical questions, please call 1-800-444-3353. PLEASE READ THE FOLLO WING CAREFULL Y THE MANUF A CTURER AND /OR DIST RIBU T OR HAS PRO VIDED THE P AR TS DIA GRAM IN THIS MANU AL AS A REFERENCE T OOL ONL Y .
P age 16 SKU 03914 For technical questions, please call 1-800-444-3353. R e f . A m t . No. P ar t No. Description Req. MAIN SHAFT THREAD T AKE-UP P ARTS LIST.
P age 17 SKU 03914 For technical questions, please call 1-800-444-3353. MAIN SHAFT THREAD T AKE-UP ASSEMBL Y DRA WING.
P age 18 SKU 03914 For technical questions, please call 1-800-444-3353. Ref. Amt. No. P ar t No. Description Req. F ABRIC--PIERCING HOOK DRIVING P AR TS LIST.
P age 19 SKU 03914 For technical questions, please call 1-800-444-3353. F ABRIC--PIERCING HOOK DRIVING ASSEMBL Y DRA WING.
P age 20 SKU 03914 For technical questions, please call 1-800-444-3353. R e f . A m t . No. P ar t No. Description Req. PRESSER B AR P ARTS LIST.
P age 21 SKU 03914 For technical questions, please call 1-800-444-3353. PRESSER B AR ASSEMBL Y DRA WING.
P age 22 SKU 03914 For technical questions, please call 1-800-444-3353. Ref. Amt. No. P ar t No. Description Req. FEED MECHANISM P ARTS LIST.
P age 23 SKU 03914 For technical questions, please call 1-800-444-3353. FEED MECHANISM ASSEMBL Y DRA WING.
P age 24 SKU 03914 For technical questions, please call 1-800-444-3353. Ref. Amt. No. P ar t No. Description Req. LUBRICA TION P ARTS LIST.
P age 25 SKU 03914 For technical questions, please call 1-800-444-3353. LUBRICA TION ASSEMBL Y DRA WING.
P age 26 SKU 03914 For technical questions, please call 1-800-444-3353. Ref. Amt. No. P ar t No. Description Req. OIL RESER V OIR & KNEE LIFTER ASSEMBL Y DRA WING AND P ARTS LIST.
P age 27 SKU 03914 For technical questions, please call 1-800-444-3353. Ref. Amt. No. P ar t No. Description Req. MA CHINE HEAD A CCESSORIES P ARTS LIST AND ASSEMBL Y DRA WING.
P age 28 SKU 03914 For technical questions, please call 1-800-444-3353. Ref. Amt. No. P ar t No. Description Req. BOBBIN WINDER & THREAD ST AND UNIT P ARTS LIST.
P age 29 SKU 03914 For technical questions, please call 1-800-444-3353. BOBBIN WINDER & THREAD ST AND UNIT ASSEMBL Y DRA WING.
P age 30 SKU 03914 For technical questions, please call 1-800-444-3353. 3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353 Harbor Frei ght T ools Co.
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