After assembly the contacts should be adjusted as described above.
If any roughness or drag spots are repair spider cracks boat gel coat felt, discard the bearing and replace it with a new one.
Do not damage the threads of the drive nut.
Set the 21 roller cams (one at a time) into position in the hub.Testing: Operate the control in a determined manner.Repeat steps 3, 4, and 5 for other valve.Tilt differential mechanism and remove from worm gear.(d) Install the drain plug (hex) in threaded passage bottom of fuel bowl.Note: Similar tightness can be reached with an 8" length handle wrench when used by an average man.Honing or "turning" of these parts will most likely take off more metal than operating tolerance will allow, leaving the part inoperative.
R tightens the drive nut on the crankshaft.
Replace spring if it is damaged or if loss of tension is apparent.
Loosen bolts securing handles to the fan housing and bolts securing handles to transmission.
Gravely 408 Lawn Tractor Owner's Manual (Jun 1977).9 MB (posted 06/01/10).
Gasket Surfaces Check all surfaces to be sure that they are free of all gasket fragments and sealer materials.
Slide a bolt from inside the advance casting left side, up through the casting, guide, spacer, arm and strap.The half-round portion goes next to the drive nut and the pointed, machined corner points in a clockwise rotation.(b) Instal well vent jet in fuel bowl and tighten with a small screwdriver.Align the flywheels as close as possible and press the remaining flywheel on the crankpin.Start the nut on, but do not tighten it at this time.Measure with a feeler crysis 2 for pc full version gauge at right angles to the piston pin.L-806) Service Parts List (Oct 1962) 136 KB (posted 10/28/03) (file size reduced 12/26/03) Zenith 12108-D is the front-facing diecast aluminum carburetor used from 19Gravely-Zenith 68-7 Carburetor (Diecast Aluminum).Specific snow throwers / blowers covered by this service and repair manual are listed here.Attach the intake and discharge lines to the oil pump.