My stylus arm exerts 4 grams weight

Unit may need a skating adjustment. If the needle still stakes across the record check to make sure the tone arm weight is at least 1.5 grams if good you may need a new stylus or needle. a stylus and a needle are the same thing. Larry

Start at 1 gram and work your way up. Depending on the cartridge, 1.5 to 3 grams should be sufficient. Don't make it too heavy...use as light a weight as will play and track record properly. After you have set the weight, set the anti-skate knob (or counterweight) to the same force.

No it's either the stylus or the pressure to the stylus is not enough. The weight at the end of the arm will increase the pressure on the stylus. Turn it up in slightly testing a record till the stylus tracks in the grooves. The trick is to get it so that it stays in the groove without creating a rumble sound. Remember though a worn stylus will not track at all.
Most cartridges track at 2 to 3 grams. If the Weight on the arm has numbers they will correspond to the weight in grams. If you have to raise it very high the stylus is too worn.

Check the point where the arm piviots, maybe a screw has come loose. Depending on the type of cartridge it should track at 3 to 4 grams.

Two causes the stylus is worn, or there is not enough pressure being applied to the stylus. Most cartridges track at 2-3 grams. The weight at the end of the arm should be set around this figure and slowly moved higher till it tracks without sliding and without creating too much rumble in the sound. If you have to take the weight up high, then that's a good sign the stylus has gone. Or that the arm itself has a fault on it somewhere (when tried with a new stylus installed).

The counterwieght should be set the tracking force for the cartridge/stylus fitted. These are expressed in grams. Typical about 2 to 3 grams. If the weight has numbers on it these will match the grams. There's no right setting for the skate. Should the stylus start to skate accross the record increase the force. Start low!

On the arm movement, has the arm moved before after pushing start taking it to a record? As many turntables just don't.

there is a counter balance on the side of the arm called an anti skating weight.it prevents the grooves on the record from pushing the stylus inward,wearing out one side.when the anti skate weight system has a fault,it drags the arm toward the center of the record faster than needed.there is also a weight on the back of the arm.that is the balance.when set to zero,the arm should balance.then the weight is turned to 1 gram or so.if there is not enough force downward,the anti skate mechanism will drag the arm inward.

1st question. What stops recording? Or do you mean the turntable stops playing in the middle of the LP?

2nd question. The weight to set depends on the cartridge fitted. If the cartridge says 4 grams for it set at that. The trick is to set it so that it keeps in the groove of the record and not jumping, except on bad records of course. If you pick up a lot of rumble (during the gaps for instance) it will have too much weight on. On the back of the arm should be a ring or something with numbers on. Turn it till a number matches the indicator mark. The number you chose should match the weight required.
They used to sell a gauge for stylus pressure. Don't know if you can still get them.

HELLO

Make sure you have the deck set up correctly! Check the headshell - is the cartridge out of alignment or is the stylus worn?

Also, it may be that the counterweight is set too lightly for the cartridge and check the anti-skate control as well (example if the arm is tracking at 2 grams, anti-skate must be set at 2).

Follow these instructions for setting the counter balance:

Turn the weight so that the arm is just floating then set the balance ring (with the numbers on) you will see there is a line. Turn the ring not the weight to the ZERO mark where the line is on the top of the arm. Now turn the weight and ring together where it moves forward down the arm and set it at about 2 grams.

Now set the arm using the height adjustment that is the ring fitted to armboard and make sure the arm is straight (if not, the stylus will mistrack). Now try the deck again. You might have to make adjustments to the tracking weight again so whatever you have it set to, set the anti-skate to the same!

Good luck with it (:-)

Balancing the tone arm is a two step process. Set the needle weight adjustment to zero(0) and make sure that the tone arm is balanced. It should rest horizontally without touching anything. Next, set the needle weight (usually 1.5 grams). Both adjustments should be on the rear of the tone arm. That should cause the tone arm to drop toward the record and have the correct pressure for the needle. Also, check the anti-skate adjustment. If that is off, the behavior you describe will occur as well.

Dan