22
5.2.2
Door
opening:
After adjusting the hinge links for door closing, the handle link
(Figure 15 – C) can be adjusted to obtain maximum door opening. Lengthen the
link to open the door farther. Shorten the link to open the door less. The
maximum door opening is limited by the contacting arm hitting the stop (Figure 15
– D). This stop is non adjustable, and prevents over opening damage from
occurring to the linkage.
5.2.3
Latches:
Once the open and closed positions have been set, the latches (Figure 15
– E) can be adjusted. With the door closed, the latch link should be set so that the
latch plate completely engages and contacts the latch rod welded to the door. The
latch plates should not be tight against the latch rod. They should easily “wiggle”.
6. Tips and Troubleshooting
Your Exmark Ultra Vac has been designed to be the most productive bagging system on the
market. The following tips have been collected to help you get the most out of your Ultra Vac
right from the start.
6.1
When mowing in areas with sandy soil, use low lift blades on the cutting deck and
higher cutting heights to minimize wear on the blower components.
6.2
When mowing in wet conditions, such as just after a rain or in heavy dew, use low
lift blades on the cutting deck to minimize plugging of the blower.
6.3
When the bags get full, the sound of the blower will change and there will be slight
blowout from the front right corner of the deck. Emptying the bags at this point will
minimize the potential for the tube to plug.
6.4
If there is excessive blowout from the deck, check to make sure that the rear
screen in the hood is clear of grass build up. It is recommended that the screen
and mesh portions of the bags be cleaned regularly to maintain proper air flow.
This is especially important in wet conditions.
6.5
During dry conditions check engine air cleaners and clean cooling fins more
frequently. The Ultra Vac has been designed to minimize the impact of dust and
debris on the mower, but bagging can be a dirty environment.
6.6
During dry conditions, switching to a lower lift blade may reduce blowout without
hurting quality of cut.
6.7
Maintaining a ground speed that does not pull down the engine RPM will allow for
the highest productivity and best quality of cut. Bogging the engine RPM down by
going too fast will cause plugging and quality of cut issues.
6.8
When storing the Ultra Vac, it is recommended that any build up in the blower be
cleaned out. Dry grass build up may cause problems with the impeller when the
unit is put back into operation.
6.9
The condition of the belt drive is critical to proper operation. A sticking idler arm or
worn belt may cause plugging or blowout. Replace the belt when the idler arm is
riding on or near the stop.
