Briggs & Stratton 1938 User Manual download pdf (Page 1)

1937-1938 Hudson Six

Model 73 (1937), 83 (1938)

Tune-up Specifications

MODEL IDENTIFICATION

SERIAL NUMBER: First No. 73-101 (1937), 83-101

(1938). Stamped on plate on right front door hinge pillar

post. Number prefix (73-, 83-) indicates model.

ENGINE NUMBER: First No. 73-101(1937), 83-101

(1938). Stamped on left side of cylinder block opposite

#6 cylinder (1937), top of block between #1 and #2

exhaust flanges (1938). Number prefix (73-, 83-)

indicates model.

TUNE-UP

COMPRESSION: Compression Pressure

6.25-1 std. CI. head 103 lbs. @ 170 R.P.M.

7.0-1 Optl. Al. head 119 lbs. @ 170 R.P.M.

NOTE-7.0-1 aluminum head - Super Power Dome.

VACUUM READING: - Gauge should show steady

reading of 18-21”, with engine idling at 350 R.P.M.

FIRING ORDER: 1-5-3-6-2-4. See diagram.

SPARK PLUGS: Champion Type J-8A (Std. 6.25-1

Eng.), Type H-10 (Optl. 7.0-1 Eng.). 14 mm. Metric.

Gaps - . 032"

IGNITION: See Coil, Condenser, and Distributor.

Breaker Gap - .020". Cam Angle 35º (closed).

Automatic Advance - 14º max. at 1580 RPM

(distributor).

IGNITION TIMING: See Ignition Timing.

Std. Setting - At TDC. Flywheel mark "UDC.1-6/" at

indicator in left front face of housing.

CARBURETION:

Idle Setting -Both idle screws ¼-¾ turn open. Idle

speed 7 MPH.

Accelerating Pump - Inner hole Warm Temperatures,

Outer hole - Cold Temperatures.

Float Level - 15/64" from gasket seat on cover to top of

float (not soldered seam). Invert to check.

Fuel Pump Pressure: 4½ lbs. maximum.

MANIFOLD HEAT CONTROL: - Thermostatic coil

type. Located within manifold housing behind

carburetor. No adjustment required,

VALVES: See Valve Timing.

Tappet Clearance - .006" Int., .008", Exh. Hot.

STARTING: See Battery, Starter, Generator, Regulator.

IGNITION

IGNITION SWITCH: Mitchellock Model 24-B, Type

7063 (1937), 7642 (1938). Connected to coil by

armored cable.

Ignition Lock - Briggs & Stratton, Mitchell No. 6095.

B&S No. 50184. Key Series - H601-H1100.

COIL: Auto-Lite Model IG-4644 (1937), IG-4650

(1938). Service Coil (less Switch & Cable) IG-3224JS.

Ignition Current - 2.5 amperes idling, 4.5 stopped.

CONDENSER: Auto-Lite Part No. IGB-1025 (1937),

IGB-1025J (1938). Capacity-.20-.25 microfarad.

DISTRIBUTOR: Auto-Lite Model IGW-4013-A (1937),

IGW-4103-A (1938). Single breaker, 6 lobe cam, full

automatic advance type.

Breaker Gap - Set at .020".

Cam Angle or Dwell - 35º (closed), 25º (open).

Breaker Arm Spring Tension-16-20 ounces.

Rotation - Clockwise viewed from the top.

Automatic Advance

Distributor Engine

Degrees R.P.M. Degrees R.P.M.

Start 300 0 600

3 400 6 800

4 500 8 1000

9 1040 18 2080

14 1580 28 3160

Fuel Compensator - provides manual adjustment at

distributor for octane rating of fuel used. See Fuel

Compensator Setting (following).

Distributor Removal: - Mounted on right side of

crankcase. To remove, take out hold-down screw in

advance arm.

IGNITION TIMING

IGNITION TIMING: - Initial Setting as shown. See

Fuel Compensator Setting following.

Flywheel Degrees Piston Position

All engines 0º TDC .000" TDC.

NOTE - High octane fuel must be used in engines

with 7.0-1 Super Power Dome head.

To Set Timing - With #1 piston on compression, turn

engine over until flywheel mark 'UDC.1-6/', lines up

with pointer in left front face of flywheel housing.

Loosen hold-down screw In advance arm, rotate

distributor clockwise to limit of slot, then slowly rotate

distributor counter-clockwise until contacts begin to

open, tighten hold-down screw.

To Set Timing (Using Synchroscope) - Hudson

recommends this method. Clip lead to #6 spark plug fill,

in timing mark with white chalk and direct light on

flywheel through hole in housing.

Fuel Compensator Setting - Road test car and note

performance when accelerating from 10-15 M.P.H. with

wide open throttle on level road (engine must be warm).

Slight spark knock should be evident. Adjust by

loosening hold-down screw and rotating distributor one

graduation on scale counter-clockwise (if no knock),

clockwise (if knock too severe). Repeat test. Final

setting must not be advanced beyond ¾" before

'UDC.1-6/' mark on flywheel.

1 2 3 4 5 6 7

1937-1938 Hudson Six 1

Summary of Contents

Page 1 - 1937-1938 Hudson Six

1937-1938 Hudson Six Model 73 (1937), 83 (1938) Tune-up Specifications MODEL IDENTIFICATION SERIAL NUMBER: First No. 73-101 (1937), 83-101 (19

Page 2

CARBURETOR Carter Model WDO, Type 344-S & 377-S (1937), with 402-S (1938). 1" Dual (double barrel), downdraft type with Automatic Automatic

Page 3

BATTERY National, Type ST-317X (1937), HT-17 (1938 Orig. Equip.), L-17-IF (1938 Replacement). 6 volt, 17 plate, 96 ampere hour (ST-317X), 100

Page 4

GENERATOR MODEL 73 Auto-Lite Model GCJ-14803A. Armature No. GCJ-2006. Third brush control type with external voltage regulation. Ventilated by

Page 5

Regulator (Cont’d) voltmeter between regulator 'BI and 'GD1 terminals. Operate generator, charging fully charged battery, at speed eq

Page 6

ENGINE (Cont’d) CONNECTING ROD: Length - 8-3/16". Weight - 29.4 ozs. (1937), 30.3 ozs. (1938). Crankpin Journal Diameter - 15/16".

Page 7

Clutch (Cont’d) Driven Member (1938) -Inside Diameter 6.375". Outside Diameter 9.75". Thickness .203". Facing 108 cork inserts.

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Briggs & Stratton 1938 User Manual Page 1

Browse online or download User Manual for Power generators Briggs & Stratton 1938. 1937-1938 Hudson Six

Summary of Contents

Comments to this Manuals

Briggs & Stratton 1938 User Manual Page 1

Browse online or download User Manual for Power generators Briggs & Stratton 1938. 1937-1938 Hudson Six

Summary of Contents

Comments to this Manuals

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