Toro 09802 Operator's Manual page 37

Problem
The water injection system is making an
unusual noise when aerating
Possible Cause
1. There is air in the system.
2. A nozzle is missing or there are too
many large nozzle installed.
3. There are broken springs in the nozzle
extension check valve.
4. The gearbox drive shaft or couplers
are worn.
37
Corrective Action
1. With the water supply on,
open the bleed valve under the
accumulator/valve body. If mechanical
noise continues during aeration, stop
the unit and have it serviced by an
Authorized Toro Distributor.
2. Open the bleed valve and examine the
nozzles. Verify the size and quantity
per the recommendation chart.
3. Replace the springs and inspect the
ball and seat.
4. Remove the drive shaft guard and
repair or replace as necessary.