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Re: [GMCnet] The Correct Spark Plug Means A Lot [message #248034] Sun, 20 April 2014 22:16 Go to next message
BobDunahugh is currently offline  BobDunahugh   United States
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My Onan is running great now that I have the correct plugs in it. And I've had no oil consumption issues. I have used the Pertronix system on another Onan. I really liked it until it quit on me. I'm not saying that their bad. It's just a case of it's not broke right now. So I'm not messing with a good running Onan.As to putting out a substitution list of other brands of plugs. Every parts store can refer from a Champion plug. That list would be very long. And a parts store can refer to the brands that they have on hand. Some parts need a list of many name brands. I don't see spark plugs as one of those.Bob Dunahugh GMCMI Member
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Re: [GMCnet] The Correct Spark Plug Means A Lot [message #248045 is a reply to message #248034] Mon, 21 April 2014 08:12 Go to previous messageGo to next message
BobDunahugh is currently offline  BobDunahugh   United States
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I have two 6,500 watt Onan generators. Both aren't the drawer mount, have downdraft carbs, and use the generator itself as the starter motor. Both built in 1977. When I checked with the Onan dealer. Those units use a spark plug that has a very long threaded base. Thus those spark plugs are totally not suitable in the 6,000 watt unit. I don't have a modal number for the 4,000 watt unit to call the Onan dealer. If I had the mod number for the 4,000 watt. I could call and check on that.Bob Dunahugh GMCMI Member
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Re: [GMCnet] The Correct Spark Plug Means A Lot [message #248051 is a reply to message #248045] Mon, 21 April 2014 10:29 Go to previous messageGo to next message
Billy Massey is currently offline  Billy Massey   United States
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Hi Bob

According to the 6A73 Onan operators manual the 1973 4kw BF series Onan
spark plug number is 167-0245. The same part number is also noted in the
9A73 Major Service Manual.

ref:
http://www.bdub.net/manuals/Onan/Onan4kwBF_Ops-Parts.pdf
http://www.bdub.net/manuals/Onan/Onan4kwBF_Major-Service.pdf
linked from:
http://www.bdub.net/manuals/


-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Bob Dunahugh
Sent: Monday, April 21, 2014 8:13 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] The Correct Spark Plug Means A Lot


I have two 6,500 watt Onan generators. Both aren't the drawer mount, have
downdraft carbs, and use the generator itself as the starter motor. Both
built in 1977. When I checked with the Onan dealer. Those units use a spark
plug that has a very long threaded base. Thus those spark plugs are totally
not suitable in the 6,000 watt unit. I don't have a modal number for the
4,000 watt unit to call the Onan dealer. If I had the mod number for the
4,000 watt. I could call and check on that.Bob Dunahugh GMCMI Member

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bdub
bdub.net

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Re: [GMCnet] The Correct Spark Plug Means A Lot [message #248057 is a reply to message #248045] Mon, 21 April 2014 11:22 Go to previous messageGo to next message
BobDunahugh is currently offline  BobDunahugh   United States
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Registered: October 2010
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Well. That answered that question on plugs..4,000 watt Onan plugs are Onan number 167-02456,000 watt Onan plugs are Onan number 167-1262. There is a reason that Onan did that.Bob Dunahugh GMCMI Member
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Re: [GMCnet] The Correct Spark Plug Means A Lot [message #248096 is a reply to message #248057] Mon, 21 April 2014 17:13 Go to previous message
Bob de Kruyff   United States
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Registered: January 2004
Location: Chandler, AZ
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BobDunahugh wrote on Mon, 21 April 2014 10:22



Well. That answered that question on plugs..4,000 watt Onan plugs are Onan number 167-02456,000 watt Onan plugs are Onan number 167-1262. There is a reason that Onan did that.Bob Dunahugh GMCMI Member
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I also think that the threaded length of the plug should correspond to the threaded depth of the plug hole in the head.

Bob de Kruyff
78 Eleganza
Chandler, AZ

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