c. Refer to paragraph 11-1 for a general
Manufacturer .............................. Champion
description of the liquid loading system. Figure 11-3 is a
Type ........................................... XEJ-12
wiring schematic of the pump engine. Tabulated data for
Size ............................................ 14 millimeters
(d) Adjustment data.
the liquid loading system is as follows:
(1) Liquid loading system pump engine.
Spark plug gap ........................... 0.023-0.028 inch
Manufacturer .............................Homelite
Magneto breaker point gap ........ 0.015 inch
(e) Torque data.
Type............................................Air-cooled
Number of cylinders ...................1
Spark plug .................................. 250-300 lb-in.
Stroke cycle ...............................2
No. 8 Spinlock screws ............... 6 lb-in. min
Fuel ............................................Gasoline and oil, mixed
No. 10 Spinlock screws ............. 50 lb-in. min
Fuel tank capacity ......................18 ounces liquid
No. 12 Spinlock screws ............. 80 lb-in. min
Piston displacement ..................3.3 cubic inches
No. 4-40 ordinary screws ........... 4 3/4 lb-in. min
Bore ...........................................13/4 inches
No. 6-32 ordinary screws ........... 8 3/4 lb-in. min
Stroke ........................................13/8 inches
No. 8-32 ordinary screws .......... 18 lb-in. min
Compression ratio .....................8:1
No. 10-24 ordinary screws ........ 23 lb-in. min
Air cleaner .................................Dry type
No. 10-32 ordinary screws ........ 32 lb-in. min
(4) Quick-disconnect couplings.
Ignition system ...........................Magneto
Type of lubrication .....................Oil mixed with fuel
Manufacturer ............................. Snap-Tite, Inc.
Governor ....................................Air-vane type
Type .......................................... Double shut-off
(2) Pump.
coupling: valved
Manufacturer .............................Homelite
nipple and valved
Type ...........................................Self-priming, centrifugal
coupler
Rated speed (no load) ...............6400 -- 6600 rpm
Size ............................................ 1 1/2 inch
Drive ..........................................Direct
Material ...................................... Brass
(3) Engine accessories.
Seals .......................................... Teflon
(a) Carburetor.
Working pressure ....................... 270 psig
Manufacturer .............................Tillotson
Force to connect (at no
Model .........................................HS40A
pressure ................................ 37 pounds
(5) Ball shutoff valve.
Type ...........................................Diaphragm with integral
fuel pump
Manufacturer .............................. Worcester Valve Co.,
(b) Ignition system.
Inc.
Type............................................Magneto
Part Number ............................... 1 1/4-436T-SE
Manufacturer of magneto ...........Wico
Type ........................................... Manually operated, ball
Model..........................................FW-2782-C
shutoff
(c) Spark plug.
Size ............................................ 1 1/4 inch
Figure 11-3. Liquid loading system pump engine - wiring schematic.
11-4
