John Deere GP-2700GH - Manual (Page 20)

0 Operator’s Manual
Preparation
unlOAdeR
CAuTIOn: RISK Of unIT dAmAGe! dO nOT OveRTIGHTen THe
unlOAdeR. bReAKAGe COuld ReSulT In
ImmedIATe lOSS Of WATeR PReSSuRe And COSTly
RePAIRS.
The unloader on your machine is equipped with an adjustment knob to adjust
the pressure. Should less pressure be required, simply turn the adjustment
knob counterclockwise. To set back to maximum, turn adjustment knob
completely clockwise. DO NOT OVERTIGHTEN!
THeRmAl RelIef vAlve
To ensure the water temperature does not exceed acceptable levels, never
allow the pressure washer to operate in the bypass mode (with the unit
running and the trigger gun closed) for more than three minutes.
A thermal relief valve has been added to this unit to protect the pump. It may
begin to open and release water if the water temperature in the pump has
exceeded 40°F. This will allow fresh, cool water to enter the system.
PRe-START InSPeCTIOn PROCeduReS
Before starting the unit, perform the following procedures:
. Check the oil level in the pump and engine.
. Inspect the water inlet strainer. Clean or replace if necessary.
. Check all hose connections to ensure they are securely tightened.
4. Inspect for system fuel leaks. If a fuel leak is found, DO NOT START UNIT!
Be sure that all damaged parts are replaced and that the mechanical problems
are corrected prior to operation of the unit. If you require service, contact
Customer Service.
5. Inspect high pressure hoses for kinking, cuts and leaks. If a cut or leak is
found, DO NOT USE HOSE! Replace hose before starting unit. Be sure
that all damaged parts are replaced and that the mechanical problems
are corrected prior to operation of the unit. If you require service, contact
Customer Service.