Typewriter types a few letters and stops

On the L. of the keyboard there is a slide switch for pitch it should be in 10, 12 or 15 not in PS. If it isn't in PS push down on it and slide it up and down a few times and leave it in 10 or 12.

DickyO

how to install and set the daisy wheel correctly onto the typewriter

The slide switch on the L. reads 15, 12, 10 and PS it should be in 10 or 12 if it is then slide it up and down a few times while pushing down on it. They fet dirty.

DickyO

Remove the printwheel and look for bent or broken spokes, look for debris in the P/W area, try it without the correction tape, if you have the wrong type tape or it is twisted there will be a problem.

DickyO

First be sure the printwheel is properly installed and that none of the spokes are bent of broken. Then check the pitch selector slide switch on the L. side of the KB it should be in 10 or 12 not in PS.

DickyO

Try these troubleshooting suggestions for your problem:

Wrong Characters Print or Characters Space Incorrectly:

1. Turn the typewriter off, wait 30 seconds, then turn the typewriter
on again and try typing again.
2. Make sure the LANG indicator is off.
3. Try a new printwheel.
4. Look for objects In the path of the carrier.
5. Make sure the printwheel is changed when there is a language
change.
6. If you are playing back, make sure you use the same pitch
printwheel you used when you typed the text.

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You can download the Operator's Guide for your typewriter from here (it takes a little while for the download to begin):
Wheelwriter Typewriter 30 Series II (6787) Operator's Guide

change CASSETTE DAISY WHEEL,

it would help if i knew exactly what model # we are talking about. but try this. look closely at your ribbon film after you type some characters. are the letters overlapping themselves? if so, press and hold the "code" key down while pressing the period key. let up and try typing. if that doesn't help, write back with model # and maybe i can assist further.

razors

If the typewriter is typing letters or symbols that you do not type, it is usually because the Pitch Selector is set to "PS". The pitch selector is on the left hand side and has the numbers 10,12, 15 and PS. Place the selector on 10 or 12 and you will be OK.
Also, check to make sure your printwheel is installed properly. Remove it and put it back in to make sure.

Another thing you can try is to clear the memory. To do this, turn off the machine. Place a piece of paper in the machine sideways. Hold down the MAR REL key and while holding it down, turn on the machine. Wait 2 seconds, then let go of the key. The typewriter will start typing. Shut the machine off after about 15 seconds. Then turn it on as usual. This will clear the typewriter's memory and unexpected charaters should not happen anymore.
Jay @ www.granadahillsbusinessmachines.com

Does it always type the same wrong letter ie a always prints u or w ? if so the print wheel drive gear is out of position. if not and it get random letters some thing may be interfering with the wheel rotation.