Hudson Terraplane 1950 Owner's Manual page 42

40
Figure 28
With the distributor cap in position, the metal strip on the rotor should be directly
in line with No. 1 terminal. The cables should be in the cap terminals in the order,
1-5-3-6-2-4 or 1-6-2-5-8-3-7-4, following in a clockwise rotation.
The foregoing is approximate normal timing for regular or non-premium fuels at
or near sea level. For final setting see "Fuel and Altitude Compensation."
FUEL AND ALTITUDE COMPENSATION
When Ethyl or premium fuels are used in place of the regular or non-premium
grades, a more advanced spark timing should be used and final tests should be made
on the road. Also when operating a car at high altitudes, it will be found that a more
advanced spark timing can be used than at or near sea level.
To determine proper spark timing for these conditions, with engine at normal
operating temperature, accelerate at full throttle from 10 trifles per hour in high gear.
A "ping" should be noted at approximately 15 miles per hour. If no "ping" is heard,
loosen the distributor quadrant screw (I), and rotate distributor body in a counter-
clockwise direction one graduation mark at a time until the "ping" is heard. Under no
circumstances, however, should the pointer on the rear engine support be more than
1 inch (on 1st short mark) before the U.D.C. l-6 or U.D.C. 1-8 mark on flywheels.
If the "pinging" is heard at speeds above those previously mentioned, retard the
spark timing by loosening the clamp screw and rotate distributor body in opposite
direction, one graduation mark at a time until the proper setting is obtained.
HUDSON OWNER MANUAL
The engine can be cranked by removing
the knurled cap on the starting motor sole-
noid and pressing the button in quick suc-
cession.
The distributor rotation is clockwise.
Loosen the distributor advance arm screw
(I) and rotate the distributor housing clock-
wise to the limit of the slot in quadrant.
Take off the distributor cap and remove the
central wire from the cap. Place the bare
end 1/8" from the cylinder head. Turn on
the ignition and rotate the distributor body
counterclockwise slowly just until a spark
jumps from the high tension wire to the
cylinder head. Tighten screw (I), replace
central cable in cap, and clamp cap on
distributor.