Exmark Metro 00 & Higher - Manual (Page 28)

Maintenance
Height Adjustment Table and notes in the
Adjusting the Cutting Height section.
9. Install unused spacers between top of spindle and
spindle nut.
10. Torque bolt to 75–80 ft-lb (102–109 N-m) (see
Figure 12).
Figure 12
1. Spring disc washer
(cone towards bolt head) 2. Blade bolt torque to
75–80 ft-lb (102–109
N-m)
Transmission Belt
Adjustment
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. To tighten transmission belt, loosen the 3/8 inch
nyloc nut on transmission belt idler pulley. Slide
bolt inward in slot and retighten nyloc nut.
3. When properly adjusted, the belt should have 1/2
inch (1.3 cm) of deflection with three pounds
of pressure on the belt midway between the
transmission and engine pulley.
Wheel Drive Belt Pulley
Scrapers
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. Be sure mud and grass scraper, on each side,
is adjusted properly and centered in the pulley
grooves. The pointed part of the scraper should
be centered and as deep in the pulley groove as
possible without rubbing at any point.
Engine to Mower Deck Belt
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. Check the adjustment of the lower blade drive
linkage located between the bellcrank on the
engine deck and assist arm on the mower deck.
Lengthen or shorten the linkage. When properly
adjusted, there should be 1/16 inch to 1/8 inch
(2–3 mm) of clearance between bell-crank and
transmission output shaft when belt is engaged.
Make sure the assist arm is against the rear assist
arm stop on the deck (see Figure 13). Push the
lever down to the disengaged position. The assist
arm should contact the front assist arm stop on
the deck. If it does not contact, readjust so that
the bellcrank is closer to the transmission output
shaft.
3. Belt must be tight enough to not slip during heavy
loads while cutting grass. Over-tensioning will
reduce belt and spindle bearing life. To adjust
belt tension, loosen the 5/16 inch whizlock nut
on turnbuckle and rotate the turnbuckle; rotate
turnbuckle toward rear of mower to tighten, and
toward front of mower to loosen belt tension (see
Figure 13). Leave a minimum of 5/16 inch (.79
cm) of the eyebolt threads engaged on both ends
of the turnbuckle.
For 48” Decks: If there is no adjustment left in
the turnbuckle and the belt is still loose, the rear
idler pulley can be repositioned in the front hole
(See Figure 12). The belt guide located next to
the pulley must also be repositioned in the front
hole when the pulley is moved. The turnbuckle
will need to be readjusted.
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