Thread Locking Adhesives; Mobil Hts Grease (Or Food-Grade Anti-Seize); Copper-Based Anti-Seize; Dielectric Grease - Exmark Metro 4500-352 Operator's Manual

Maintenance

Thread Locking Adhesives

Thread locking adhesives such as "Loctite 242"
or "Fel-Pro, Pro-Lock Nut Type" are used on the
following fasteners:
• All belt drive pulley setscrews.
• OPC lever setscrews.
• Pulley retaining bolt in end of engine crankshaft.
• 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:
• 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.
• Fuel tank studs, where studs are inserted into tank.
Mobil HTS Grease (Or
Food-Grade Anti-seize)
Mobil HTS grease (or food-grade anti-seize) is used
in the following locations:
• Between the cutter housing spindle and bearings.
• Between the cutter housing spindle and sheave.

Copper-Based Anti-seize

Copper-based anti-seize is used in the following
locations:
• Between the blade drive and transmission drive
pulleys and engine crankshaft.
• Between the transmission drive pulley and
transmission drive shaft.
• Between the bearings and sheaves and
transmission output shafts.

Dielectric Grease

Dielectric grease is used on all blade type electrical
connections to prevent corrosion and loss of contact.

Adjustments

Note: Disengage PTO, shut off engine, wait for
all moving parts to stop, engage parking brake, and
remove key before servicing, cleaning, or making any
adjustments to the unit.

Adjusting the Cutting Height

The cutting height of the mower deck is adjusted
from 1 inch to 4 1/4 inches (2.54 cm to 11.4 cm) in
1/4 inch (.64 cm) increments by adjusting the axle
position, number of spacers below the caster hub,
and number of spacers between blade and spindle.
Refer to the Cutting Height Adjustment table and
select a cutting height range in the left hand column
which corresponds to the range of cutting heights
you will most often be using. Adjustments within this
range can then be made by adjusting the number of
blade spacers between the blade and the bottom of
the spindle (this is a much easier adjustment to make
than adjusting axle position and number of spacers
below caster support hub).
Note that:
• For the best cut and discharge, place a minimum
of two spacers between the blade and the spindle.
• For highest quality cut, place all four spacers
between the blade and the spindle.
• If mulching kit is installed, the highest quality cut
can be obtained with 3 spacers between the blade
and the spindle (minimum is 1 for a good cut).
• When mulching leaves it is best to have fewer
spacers between blade and spindle.
Refer to the table and select desired cutting height
range. Refer to Adjusting the Axle Position,
Adjusting the Number of Spacers below Caster
Support Hub, and Adjusting the Cutting
Height with Blade Spacers and sections to make
adjustments make adjustment to obtain specific
cutting height.
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