Hi I cannot find the lint remover or lint filter in my smeg S750 washing machine (serial No. 00501972-000001149) which is used exclusively for farm clothes - lots of hay, sawdust etc which surely must be clogging the machine somewhere?

Replace the timer. for a detailed parts diagram, Google machine type, model ,and serial number.

have a look at these pics
https://www.manualslib.com/manual/155848/Smeg-Washing-Machine-Ktl6.html?page=9

i have encounter the same problem and the only solution is to replace p.c.b board

Hi,
To find the filter you need to do the following steps. Find your lint trap. Lint traps in washing machines can be in the agitator (the large plastic piece in the center of the tub), at the top of the washer on the rim of the tub, or attached to the washing machine's drainage hose. Pull out the agitator tube to check for the lint trap. Peel any loose lint from the filter. Scrub away lint that doesn't peel off easily with a heavy-duty paper towel or a wet sponge. Feel your way around the top rim of the washing machine's basin. If you locate a trap, pull it straight out of the machine. Peel away loose lint and follow up with a wet sponge or heavy-duty paper towel. Check your machine's drainage hose for an attached lint trap. Remove the trap and peel the top layer of lint off. Rinse the trap in low-pressure, warm water. Reattach to the drainage hose. Check for and remove any lint or debris that may have dropped into the washing machine basin during the cleaning.
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Hi take the lint fiter and scrub it with soap and water every so often to avoid blockage.

is the machine noisy on spin cycle

Advance the timer to rinse/spin part of cycle.

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I have a regular top loader and the lint filter is on the underside of the inner tub. You have to remove the inner tub to get to it. You might be able to find a service manual explaining this at appliancejunk.com.