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5. TIPS AND TROUBLESHOOTING
Your Exmark FrontRunner 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.
5.1
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.
5.2
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.
5.3
When the hopper gets full, the fill sensor alarm will sound in a pulse tone. Shutting
off the PTO will shut off the fill sensor alarm. Emptying the hopper at this point will
minimize the potential for the tube to plug.
5.4
If there is excessive blowout from the deck, check to make sure that the rear
screen in the hopper is clear of grass build up. It is recommended that the screen
be cleaned regularly to maintain proper air flow. This is especially important in wet
conditions.
5.5
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.
5.6
During dry conditions, switching to a lower lift blade may reduce blowout without
hurting quality of cut.
5.7
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.
5.8
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.
5.9
If the blower drive belt snaps or breaks frequently, check the alignment of the idler
arm per section 4.1.3 (b). An arm that is bent out of position can cause the belt to
jump off of the idler and be cut by the sheaves.
5.10
If the idler pulley contacts the deck sheave, check the alignment of the idler arm
per section 4.1.3 (b). Also check the mounting tube on the deck and the mounting
pin on the blower for bending or excessive wear. This condition is more likely to
occur with smaller deck sizes.
5.11
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.
5.12
Anti-blowout kits are available for leaf collection. They help to prevent "chasing"
the leaves. To reduce "plowing" leaves, raise the deck slightly.
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