Cannot get preasure from my new 160d washer. Can I adjust the pump ?

The pressure relief valve could be stuck open or faulty. The check valves may be stuck or plugged up. Try thoroughly clean these parts and see if that helps.
Bob

Pump gets anti freeze for winter. 4-cycl motor gets the oil called for in the manual. 2-cycles get oil in the gas.

It is factory preset to stop at 50psi but is adjustable. Do you have a pressure tank in line and close to the pressure switch to assist in pressure stabilization?

your bypass pressure valve is weak and needs replacing,its letting water pressure bypass the pump going to the pressure gun

then it is defective.

No this is normal. As an engine wears then oil preasure will be less this is not due to a weak oil pump but wear in crank shaft bearing's. When an engine is new and bearings are tight then oil preasure wont fall a lot from reved up to idle as the engine wear's oil escapes quicker from the crank shaft bearings. Reved up oil preasure increases idle it drops off. If the oil light stays out then their is enough preasure to lubricate the engine. In fact in an older engine high oil preasure is a worse complaint as this means the oil system is clogging. All is ok with your pump. If the oil preasure is moving up and down at constant rev.'s then the oil pump is faulty. Hope this put's your mind to rest.

Hi:
This sounds like the bypass valve is stuck. You need to get at it and pull it out. Then check it for o-ring damage and be sure you lube it with a good waterproof grease before replacing. If THIS is your pump then the bypass valve is #8 on page 2.4

Try starting the washer up without a nozzle clicked in and purging water through the pump, shut it down and install the nozzle and restart, if the motor lugs then it is making pressure, if the pump squirts water out of the by-pass immediately and or constantly it may be a stuck bypass and not a bad pump.

check oil level. it has a low level shut off switch ?? May be it

If it wont fill properly it sound to me me like a preasure switch. Take the control panel off and look at the load size selector switch (preasure switch). This has a hose connecting it to the wash tub. Follow that hose back to see if it may have some kind of blockage in the line. If not you may need to replace the switch.