RV.Net Open Roads Forum: Tech Issues: Onan 6.5 Generator problems


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Metalcutter

Illinois

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Joined: 03/03/2008

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Posted: 04/29/08 07:25pm

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Hello

I am trying to get my generator ready for use on my recently purchased used RV. It seems to run decent except the muffler end has rotted away. Today I put a new muffler on it and with the new muffler the unit doen not want to start unless I flip the choke. (I believe it would be in the open position.)Then it eventually will start , It seems to be flooding??Maybe?? I just dont understand why the muffler would cause carb problems???

Thanks to anyone who can help me out..

Metal

6.5 NHE-1R/26100C
S/N 1870934895
V=120
PF=1.
AMPS=54.2
HZ=60
RPM=1800
BAT 12

Metalcutter

Illinois

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Posted: 04/30/08 01:30pm

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Metalcutter wrote:

Hello

Does anyone know where I could download or buy a service manual for this generator? I Have an installation manual, an operators manual, and a parts manual but nothing on servicing the motor.I am tring to find info on the factory settings on the carb. Mainly the altitude adjustment screw, I think it maybe way out of adjustment.

Thanks again

Metal

jmerritt

Evendale, Ohio

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Posted: 04/30/08 01:39pm

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Go here it is the Onan site.

http://www.onan.com/onan/askOnan/askOnanFaqHome.jsp?topicId=21&marketId=42

1988 Fleetwood Limited 37' MH
1999 F-350 PSD Super Duty 4x4 Coachmen Royal 32' TT

Generator Jim

Conway, SC

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Posted: 04/30/08 02:07pm

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Main jet/altitude adjuster 1 1/2 turns open from GENTLY closed
Idle jet 1 1/2 turns open or blocked on later models
Idle speed adjusting screw/bolt Set at 55 Hz or 100 volts.

JimL

Jim & Jane Latour
08 Chevy 3500HD, crew cab, dually, Duramax/Allison
05 Wilderness Advantage AX6 365 BSQS, Onan 3.6KY
Retired AF CMS (E9) Power Generation and Onan RV genset Level III tech
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Jaseds

NE TN.

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Posted: 04/30/08 05:48pm

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Did not put on backwards did you

Have A Nice Day

Metalcutter

Illinois

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Posted: 05/02/08 02:03pm

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Jaseds wrote:

Did not put on backwards did you

Went on just as it came off. I think this style would be impossible to go on backwards.

Thanks

Metal

Metalcutter

Illinois

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Posted: 05/02/08 05:31pm

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Generator Jim wrote:

Main jet/altitude adjuster 1 1/2 turns open from GENTLY closed
Idle jet 1 1/2 turns open or blocked on later models
Idle speed adjusting screw/bolt Set at 55 Hz or 100 volts.

JimL

Hello

Am I correct in thinking that the main jet screwed all the way in or until the spring is compressed would be closed?

Where is the Idle Jet?

Should the screw that is above the governor linkage be touching the linkage? (It is not)

When the unit is running the linkage in slightly moving back and forth as the unit has a very slight fluctuation in RPM?

Thanks again for your time.

Metal

kg5388

memphis

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Posted: 05/02/08 08:08pm

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if you take the muffler off will it run correctly????

1995 viking pup
1988 four winns 160 freedom boat
Onan RV full service certified
level 2 onan industrial gen tech
comfortguard APU full service certified
onan portable full service certified
onan RV hybrid full service certified

Metalcutter

Illinois

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Posted: 05/03/08 09:29am

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kg5388 wrote:

if you take the muffler off will it run correctly????

Hello

Yes, It starts alot easier and runs about the same. I really think maybe my carb is out of adjustment a little. With the muffler on I am getting about 130V w/air on but when I shut it down it jumps to 150V for a couple of seconds. I have a suggestion from Generator Jim on how to fix the over voltage but I want to make sure the carb. is ok before I correct that.

Thanks again

Metal