Exmark Vikingtm Hydro 4500-355 - Manual (Page 32)

Maintenance
Figure 15
48 inch Mower Deck
Blade Brake Adjustment
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. Disengage PTO.
3. Make sure the blade brake pad rests against
the sheave. Adjust the spring mounting bolts
to properly align the pad on the sheave (see
Figure 16).
Figure 16
Shown with Blades Disengaged
1. Blade Brake Rod 3. 1/8 inch to 3/16 inch
(.32–.47 cm)
2. Spring Mounting Bolts
4. Check the distance between the spacer and the
nut at the end of the blade brake rod. The
distance should be between 1/8 inch (.32 cm) and
3/16 inch (.47 cm) (see Figure 16).
5. Engage the PTO and check to make sure the
blade brake pad clears the sheave.
Belt Guide Adjustment
1. Stop engine and wait for all moving parts to stop.
Engage parking brake. Remove key or spark plug
wire(s).
2. Engage the PTO.
3. Check belt guide under the engine deck for proper
adjustment (see Figure 17 and Figure 18). Adjust
as necessary.
Figure 17
36 inch Belt Guide Location
(Viewed from underneath the engine deck)
1. 1 1/4 inch (3.1 cm) 3. End of slot
2. 1/4 inch (.64 cm)
clearance
Figure 18
48 inch Belt Guide Location
(Viewed from underneath the engine deck)
1. 1 3/8 inch (3.5 cm) 3. End of slot
2. 1/4 inch (.64 cm)
clearance
Pump Drive Belt Tension
Adjustment
Self-tensioning - No adjustment necessary.
32