Harley 1979 Harley Help

KELLY Toth

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Thanks in advance for taking the time to read my post and reply. I recently bought a 79 harley davidson 3 wheel golf cart as a project for my days off out at the lake. I didn't pay much and saw some potential. I'm not too familiar with golf carts but I'm mechanically inclined and can figure it out eventually... Just looking for a bit of help or suggestions on where to start with it. It starts and fires up but reverse doesn't work and it barely moves in forward. I'm thinking it might be the clutch. Any help would be greatly appreciated. Thanks
 

Crash Test Dummy

Dazed and Confused
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first check the brakes
should move freely

wiring 78~79 gas


point Gap for 1963 to 1981 = .022"-.024
Point Gap for 1982 to 1985 = .015"-.016"
Spark Plug Gap:

1963 to 1970 =
.040"

1971 to 1981 = .025"

1982 to 1985 = .040"

1986 to 1989 = .025"

1990 to 1995 = .035"

1996 to 2004 = .030"


Harley Davidson Engine Specifications for 1963 to 1981 two cycle engine:
Cylinder to Piston Clearance measured 3/8" below bottom ring land = .006" to .007"

Piston Ring End Gap = .007" -.017"

Piston Diameter is approximately 2.739"
IMPORTANT NOTE:
Always bore cylinder with the piston on hand to insure a proper fit due to piston diameter inconsistencies.

Torque Specs:
Cylinder Head Bolts:
17-21 ft/lbs (2.4-3.0 kgm)

Crankcase Bolts: 9-11 ft/lbs (1.3-1.5 kgm)

Axle Nut, 1976 and older: 50 ft/lbs (7.0 kgm)

Axle Nut, 1977 and newer: 100 ft/lbs (14 kgm)

Primary Clutch Nut, 1963 to 1981: 75-80 ft/lbs (11 kgm)


Oil Mix Specs for 1963 to 1995 Harley Davidson & Columbia Par Car without oil injection:
Use 1.5 ounces of any good quality two stroke oil to one gallon of gas.
Clutch on 1963 to 1981 uses 12 ounces of 75/90 wt. gear lube.
Use 75/90 wt in the differential on 1963 & newer Harley & Columbia.

Harley Davidson Engine Specifications for 1996 & newer B&S Vanguard four cycle engine:
Tune-up & Engine Specs for 9hp

Bore and Stroke: 3.15 in. (80 mm) x 2.32 in. (59 mm)
Displacement: 18.5 cu. in. (296 cm3)
Cylinder Head Torque: 300 in/lbs (33.9Nm)
Rod Torque: 175 in/lbs (19.8Nm)
Spark Plug Gap: .030 in. (.76 mm)
Intake & Exhaust Valve Lash: .002"-.004" (.05-.10mm)


Tune-up & Engine Specs for 13hp

Bore and Stroke: 3.50 in. (89 mm) x 2.48 in. (63 mm)
Displacement: 24.4 cu. in. (391 cm3)
Cylinder Head Torque: 35 ft/lbs (47.5Nm)
Rod Torque: 175 in/lbs (19.8Nm)
Spark Plug Gap: .030 in. (.76 mm)
Magneto Armature Coil Gap:.012" (.31 mm) to.020" (.51 mm)
Intake & Exhaust Valve Lash: .004"-.006" (.10-.15mm)

Tire Pressure

18 x 8.5 x 8 tires: Check pressure and inflate to 18 psi (1.2 atm)
5.70 x 8 tires: Check pressure and inflate to 50 psi (3.4 atm)
service manual
 

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