Exmark Viking Hydro 920000 - Manual (Page 31)

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 13).
Figure 13
1. Spring disc washer
(cone towards bolt head) 2. Blade bolt torque to
75–80 ft-lb (102–109
N-m)
PTO Engagement Linkage
Adjustment
Located between the PTO engagement bellcrank and
PTO engagement assist arm beneath the front, left
hand corner of the engine deck.
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. With PTO engaged (lever pulled up, adjust the
linkage length to where the lower end of the
bellcrank just clears the axle support gusset (see
Figure 14). Make sure the assist arm is against the
rear assist arm stop on the deck (see Figure 15).
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 gusset.
Figure 14
1. The bellcrank just clears the gusset with the PTO
engaged
2. PTO Safety Switch (located beneath the engine deck)
3. Bellcrank
PTO Safety Switch
Adjustment
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. With PTO disengaged and assist arm against the
front assist arm stop, adjust the blade safety switch
mounting bracket (if needed) until the bellcrank
depresses the plunger by 1/4 inch (.64 cm).
3. Be sure the bellcrank Does Not touch the switch
body or damage to the switch could occur.
4. Retighten switch mounting bracket.
Engine to Mower Deck Belt
Adjustment
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. Engage PTO.
3. Check belt guides under rear engine and front
mower deck to see that they are properly set (see
Belt Guide Adjustment section for instructions).
4. Belt must be tight enough so it does 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 turn buckle; rotate turnbuckle toward rear of
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