Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 07-08-2012, 11:34 AM   #1
Junior Member
Join Date: Jul 2012
Location: Macon, GA
Posts: 7
Wink Onan 6500 fuse

I rencently had the generator worked on. Tried to "exercise" the unit yesterday and found electrical tape holding in the two fuses on the face of the genset circuit board area. Unit would start and run as long as I held in the "start" button, quits as soon as it's released. Obviously I need the proper cap for the fuse unit.....but my question is: do these fuses provide 12 v. to the circuit board and would their malfunction lead to the symptoms I described? Thanks for any help.

DarrelC is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 07-08-2012, 07:22 PM   #2
Moderator Emeritus
Gary RVRoamer's Avatar

Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,632
Holding the Start switch down makes the generator bypass a couple diagnostic checks that would cause a shutdown, i.e. low oil pressure and no 120vac. It also sends 12v to the fuel pump so there is fuel for starting. Once the button is released these checks become active.

Is this a Marquis series generator, i.e. the Marquis 6500? You can find the service manual for it here:
Download: Onan marquis 6500 service manual at Marks Web of Books and Manuals

Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 07-22-2012, 05:59 PM   #3
Junior Member
Join Date: Jul 2012
Location: Macon, GA
Posts: 7
Finally took the unit to Camping World. The problem was a fried voltage regulator. Install and ran great.
DarrelC is offline   Reply With Quote
Old 07-31-2012, 09:36 AM   #4
Junior Member
Join Date: Jul 2012
Posts: 12
Blog Entries: 1

i had the same thing happen to my onan generator,any idea what these fuses are fore.
choo choo 1 is offline   Reply With Quote
Old 08-01-2012, 04:41 PM   #5
Junior Member
Join Date: Jul 2012
Location: Macon, GA
Posts: 7
Extra fuses

The two fuses in the holder on the front of the genset are simply spare fuses for the generator. You have to remove the cover of the genset to replace them.
DarrelC is offline   Reply With Quote

fuse, onan

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:04 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.