Asus 136-480A - Manual (Page 12)

SPARK PLUG WHEEL ADJUSTMENT
The spark plug gap should be cleaned and reset to
a 0.030-inch clearance every hours of engine
operation (See figure 20). Spark plug replacement
is recommended at the start of each mowing
season; check engine parts list for correct plug
type.
^NQTE
Whenever the spark plug is removed
for cleaning, it is advisable to re­
place the spark plug gasket with a
new gasket.
FIGURE 20. SPARK PLUG CLEARANCE
REPLACING BLADE
WARNING
Before beginning work on the cutter
blade, remove the spark plug from
the cylinder.
Removing and Sharpening Blades. Remove the
center bolt and lockwasher. See figure 21. Pull the
blade and blade adapter from the blade spindle.
The adapter can be removed from the blade by
removing the two adapter bolts, lockwashers and
nuts.
The caster (forward slant of the king pin) and the
camber (tilt of the wheels out at the top) requires
no adjustment. Automotive steering principals
have been used to determine the caster and
camber on the tractor. The front wheels should
toe-in 1/8 inch.
To adjust the toe-in foilow these steps.
1. Remove the eiastic locknut and drop the tie
rod end from the wheel bracket. See figure 22.
2. Loosen the hex jam nut on tie rod.
3. Adjust the tie rod assembly for correct toe-in.
FIGURE 22. TIE ROD ADJUSTMENT
12
Dimension “B” should be approximately 118” less
than Dimension “A”. See figure 23.
A.) To increase Dimension “B”, screw tie rod into
tie rod end.