AIRLESSCO G-Force II 2525 DD - Manual (Page 15)

Maintenance
333031E 15
Maintenance
Engine
The engine instructions that accompany the unit detail
specific procedures for engine maintenance. Following
the engine manufacturer's recommendations will extend
engine work life.
Pump
The pump oil must be changed after the first 25 hours of
operation on all units. Once the initial oil change has
been completed, it is recommended the oil be changed
every 3 months or 250 hour intervals. If oil appears dirty
or milky, changes may be required at a greater fre-
quency. Add pump oil and fill only to the center of the
sight glass. Refer to the parts listing for the correct
pump oil. Do not overfill.
Nozzles
Water flow through the spray nozzle will erode the ori-
fice, making it larger and result in a pressure loss. Noz-
zles should be replaced whenever pressure is less than
85% of the maximum. The frequency of replacement will
depend upon such variables as mineral content in the
water and number of hours the nozzle is used.
Quick Couplers
There is an o-ring seal inside the female quick coupler.
This o-ring will deteriorate or, if the unit is allowed to
pump without the high pressure hose or nozzle
attached, the o-ring may be blown out occasionally.
Insert a replacement o-ring to correct the leak. Addi-
tional o-rings can be purchased from your dealer.
Belt Tension Adjustment
To maintain peak performance, it may be necessary to
occasionally adjust the belt tension. Perform the follow-
ing steps:
1. Remove belt guard and loosen two nuts on each
side of pump (A).
2. Turn cap screw (B) clockwise until a 1/2 in. (12.7
mm) belt deflection is noticed between the pulleys.
3. Tighten side nuts (A).
4. Put a straight edge across both pulleys. If neces-
sary, loosen one set of pulley screws and adjust in
or out to properly align. Tighten pulley screws and
check tension again.
5. Replace belt guard and tighten fasteners securely.