read a service bulletin once that said sometimes the bent sump hose twists or collapses in operation reducing presure. never seen it myself but maybe worth a look.
its not the sump hose you can see that as its washing i am pretty sure that the m/c starts at a reduced speed then picks up ,but what kicks it over to high speed ?
Dave
as far i am aware its a single speed motor, the old askol type motors certainly play up but if you have changed it for the new type with capacitor, it should be fine. is there 240v. get me a service number and i will have a bit more of a look.