Where do I get the bellows assembly for a Coleman portable toilet? Model 827-802T

They have model numbers and that is needed to search. '4600' is a wattage output not a model number, and are you sure it is 4600 and not 4500?

https://www.google.com/search?q=manual+for+Coleman+Powermate+4600+generator

There is no 4600

https://www.powermate.com/search/?text=4600

4500 manuals

Powermate PM3800, PM4400E, PM4500 Portable Generator

https://www.electricgeneratorsdirect.com > manuals
PDF
This manual contains important instructions that must be followed during placement, operation, and maintenance of the unit and its components. Always supply ...
84 pages

Powermate Portable Generator User Manuals Download

https://www.manualslib.com > ... > Powermate Manuals
Download 246 Powermate Portable Generator PDF manuals. User manuals, Powermate Portable Generator Operating guides and Service manuals. ..

Thetford makes toilets with hand pumps , and electrical pumps . Permanent , and portable toilets . Without more info , it is hard to guess . With my portable electric model , batteries had to be replaced .
If you need parts , go to ;
http://www.thetford.com/products/toilets/cassette-toilets/
Click Parts at the top , and go from there .

hey,
If you can get a new bellows this is possible.Repairing a bellows is also possible if you have the skills and tools to hot-air solder it.
Look at this guide that might help you. though it is not the exact model, principle is the same.
Have fun
Avi

Grohe GD2 flush system concealed cistern repair fix and disassembly...

You can find the manual here: http://r1.coleman.com/Manuals/2000001533.pdf

I know it's bit late, but hopefully it will help you in the future.

Coleman really **** big ones for not having spare parts i have the same problem.If you rap the steel rod with plumbers teflon tap it dose stop the leak just use more at the handle end.Hope this helps

I installed a inline shut off valve and filter and it works fine and is cheap.

Unless the inlet pipe has dropped off the pump assembly or got a blockage in it then you may need to replace the pump bellows.
Here is a link to a schematics pdf with all relevant part numbers. These parts are readily available from most camping and caravan equipment suppliers. http://www.leisureshopdirect.com/camping/tents/porta_potti_toilets/Thetford_Porta_Potti_335__345__365_and_spare_parts.aspx?pdf=3880

Have you tried going to colman's website?

i have 18 vol. drill coleman model:PMD8129 .
I won by (ac battery charge) plase help me
battery model:PMD8131BAT