What type spark plug for coleman powermate 5000 watt ,10 hp generator

SOURCE: need manual for my Coleman Powermate generator

Get model number and go to: http://www.powermate.com/productmanuals.php?cat_id=3

SOURCE: What type of oil for a Coleman 5000 Generator?

You need a quart of regular old SAE 5W30 motor oil with detergent.
The engines on these generators are more or less the same as a lawn mower.
Don't forget to service/change the air cleaner when you change the oil, that should keep your generator producing full power.

Regards,
Carl

SOURCE: Replacing engine on Powermate 5000W Generator

I would say, yes (given everything bolts up okay), but I wouldn't connect a full 5000-watt load to it.

SOURCE: Coleman 5000 watt generator Tecumseh 10 hp engine.

it's running lean.....try resetting the choke partially when it begins to surge.....not completely closed, but enough to richen the fuel mixture (that's all a choke does btw..)
if that helps or clears the problem, your carb is outta whack.....cheaper to buy a new carb than keep taking back into the shop.

SOURCE: 5000 watt coleman generator. Starts but no power.

engine starts & runs but no power.checked breakers ,theyre not tripped