Adjustments - Exmark Viking Hydro Operator's Manual

b) Square head setscrews on Hydro pump control arm.
c) OPC lever setscrews.
d) Shoulder bolts in ends of speed control crank.
e) Sheave retaining bolt in end of engine crankshaft.
d) Fuel tank bulkhead fitting threads.
Adhesives such as "Loctite RC/609 or RC/680" or "Fel-Pro Pro-Lock Retaining I
or Retaining II" are used on the following:
a) OPC lever hubs and cross-shaft
NOTE: Care must be used not to bond the bearing, next to each OPC
hub, to the cross shaft which could cause binding of the OPC levers and
erratic operation.
b) Fuel tank studs, where studs are inserted into tank.
5.1.20 An anti-seize compound is used on the following locations:
a) Between the blade drive and pump drive sheaves and engine crankshaft.
5.1.21 Mobil HTS grease (or food-grade antisieze) is used in the following locations:
a) Between the cutter housing spindle and bearings.
b) Between the cutter housing spindle and sheave.
5.1.22 Dielectric grease is used on all blade type electrical connections to prevent
corrosion and loss of contact.

5.2 ADJUSTMENTS

5.2.1 Adjusting cutting height with blade spacers:
Blades may be adjusted for cutting height by using the four 1/4" (.64 cm) spacers
found on the blade spindle bolts (factory setting is two above and two below).
This allows a 1" (2.5 cm) range in 1/4" (.64 cm) increments of cutting height in
any axle position. The same number of blade spacers must be used on all blades
to achieve a level cut (two above and two below, one above and three below,
etc.).
For the best cut and discharge a minimum of two spacers should be placed
between the blade and spindle shaft. The highest quality cut can be achieved
with all four spacers between the blade and the spindle shaft.
If the mulching kit is installed, the highest quality cut can be obtained with 3
spacers between the blade and spindle (minimum is 1 for a good cut).
If you need to cut higher or lower than what the spacers will allow, it will be
necessary to adjust the rear axle height and caster position. See Section 5.2.2
below.
5.2.2 Axle height and caster spacer position:
Desired cutting height range can be obtained by adjusting the rear axle and
placing caster spacers above or below the caster arm (See Figure 12).
To adjust rear axle:
a) Stop engine and wait for all moving parts to stop. Remove key or spark
plug wire(s).
b) Raise the rear of the machine up onto jack stands and remove the drive
wheels.
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