Honda em5000sx generator starts then cuts off

Question edited for a lot more clarity.
Question moved to model category.

Page 93 of the manual refers

Owner's Manual - GENERATOR EM5000SX/EM6500SX

Honda https://cdn.powerequipment.honda.com > manuals PDF This owner's manual is considered a permanent part of the generator and should remain with the generator if resold. The information and specifications included ...

Owner's Manual - GENERATOR EM5000SX/EM6500SX

Honda https://cdn.powerequipment.honda.com > manuals PDF This owner's manual is considered a permanent part of the generator and should remain with the generator if resold. The information and specifications included ...

Honda Small Engine Intake & Exhaust Valve Clearances

Steve's Small Engine Saloon https://www.stevessmallenginesaloon.com > hon... PDF Model Series. Intake Valve Clearance. Exhaust Valve Clearance. GX640. 0.10-0.14mm ( 0.004-0.006in ). 0.18-0.22mm ( 0.007-0.009in ). GX100. 0.15 +/- 0.04mm.

make sure the unit has oil if low it will not start and make sure the switch is set to on also check the gas valve is open

from your description and what you do , the problem is in the auto control unit
it will be in the system to reduce the rpm to idle when there is no load ( auto mains on off controller switching between genset and mains supply)
by turning the auto operation off you are committing the gen set to full rpms regardless of the power requirement
you have the option of having it fixed at an gen set repair shop or leaving it off and starting the genset only when you have a mains power outage
check with an electrician to ensure that it is possible to run it that way as if the mains power unit is not correct , when you start it and you still have mains power , it will destroy the gen set

• The Auto Throttle System switch needs to be in the off position.
• If the generator has not been used for awhile than the fuel is stale and the generator may be slow in responding to the load change. Replace fuel with fresh fuel.
• Attach a second load such as a 100 watt light bulb standard bulb with a tungsten filament. Observe the light as the heater cycles. If the light goes very dim than the generator is slow responding to a load change. Generator carburetor needs to be cleaned, tune-up. Run fresh fuel under load to see if carburetor will clean itself.
• Try adding choke to see if richer mixture reduces voltage dip. Check manual for mixture adjustments.

carburetor problems, remove float bowl and clean the passages thoroughly, again. Make sure no contaminants in fuel

The wiring diagram is here: http://powerequipment.honda.com/pdf/manuals/00X31Z117200.pdf
The first thing to check is the fuse and breakers, then the inverter. If it is not the inverter There is a problem with the M coil section of the generator.

check your oil.

Hi,
I have a EM5000SX. My problem is my generator will not start unless I turn the fuel selector to off. Then crank it until it does start, turn the fuel back on. Run's normal . I run this generator for my cabin every weekend.

What is the problem of your generator? Please find generator manual here:
https://www.dieselgeneratortech.com/support/

My goodness I just saw your post and I see it has been around since Dec 2010. Your post appeared after I answered a much newer post. (site operates in this manner)

Anyway if you have a 1986 generator and you have 12V DC to the starter with the key on the most likely problem is the brushes in the starter PN: 31215-ZE2-003 or 31215ZR2003
http://ssl.jackssmallengines.com/jacks-checkout/shopping-cart.aspx?CFID=179837&CFTOKEN=92541317

The only problem I have is that I do not know if this is a set or an individual brush. Use the toll free phone number on the link above to confirm quantity.

Once you have the starter removed use some 220 grit or above sand paper and clean up the copper contacts on the starter armature and lubricate the bearings.

If you do a continuity test of the armature using the copper contacts your meter leads must be exactly 180 deg from each other (opposing) to get a resistance reading.
Reading out the stator winding is a matter of reading the + lead terminal to the case.

Thanks for choosing FixYa,
Kelly