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xenovia



Joined: 20 Feb 2007
Posts: 315
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Location: Lincolnshire, England

PostPosted: Fri Jun 08, 2007 2:11 pm    Post subject: How To Change The Spark Plug Reply with quote

This guide will explain how to change the spark-plug in the standard chinese 4 stroke engine layout. My scooter is the Baotian BT50QT-9.

First of all remove the seat with the 4 bolts (Size 10mm Socket) and the 1 screw at the front.




The spark plug is located in the red circle:



Pull out the silver spark-plug cap.


This reveals a hole in which the spark-plug is located.
The tools you will need to remove the spark-plug are shown below:


The socket used is a 5/8 inch (16mm)
Use the socket wrench to loosen the spark-plug


Then use the a small length extension to unscrew the spark-plug.



Remove the spark-plug as shown:


To replace the spark-plug you will need the following equipment (the far right item is one of the bolts from when the seat was removed).


Place the seat bolt inside the socket


Then place the spark-plug into the socket. The seat bolt extrudes the spark-plug slightly more, allowing it to screw in easier.


Use the socket on it's own to screw the spark-plug back in.


And then tighten using the socket wrench.


Be careful when pulling the socket out with the bolt inside, as the bolt can quite easily fall into the engine casing. Then it's a bitch to get out.
When you have tightened the spark-plug, remember to replace the cap over the spark-plug to provide the current.



Then simly replace the seat, and the spark-plug is changed.

The correct spark plugs to use are "Standard CR7HSA" or "Iridium CR7HIX"




Last edited by xenovia on Fri Jun 08, 2007 2:25 pm; edited 1 time in total
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frainey



Joined: 10 Dec 2006
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Location: Lancashire

PostPosted: Fri Jun 08, 2007 2:22 pm    Post subject: Reply with quote

Sticky this !



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xenovia



Joined: 20 Feb 2007
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Location: Lincolnshire, England

PostPosted: Sat Jun 09, 2007 8:56 pm    Post subject: Reply with quote

hehe, thanks Wink



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px166bajaj
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PostPosted: Sat Jun 09, 2007 9:30 pm    Post subject: Reply with quote

K for Xenovia, and stickified! Wink



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WilliamHung



Joined: 03 Nov 2006
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PostPosted: Sun Jun 10, 2007 4:40 am    Post subject: Reply with quote

I'm about to do that, soon as I get my plug. Icon_thumbs_up

This sure saved me some minutes.



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easyrider81



Joined: 09 Apr 2007
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PostPosted: Sun Jun 10, 2007 2:27 pm    Post subject: Reply with quote

your the dogs wotsits xenovia :D , always wondered how to do this. Karma for you.



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frainey



Joined: 10 Dec 2006
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PostPosted: Thu Jun 14, 2007 5:09 pm    Post subject: Reply with quote

I would suggest to anyone changing there plug to get an iridium any time.
better starting and idling, better fuel consumption and a tiny boost of speed.



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kimberlytracy03



Joined: 27 Aug 2007
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PostPosted: Wed Sep 12, 2007 9:55 pm    Post subject: How To Change The Spark Plug Reply with quote

I just went out and bought one of these NKG Spark plugs, I have the RoadRunner Road Queen, the info on under the seat says it takes a DPR7EA-9, thats not what your post says.....is this one the right one? How difficult is it to change them? Can a "woman" do it?


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Kiddah



Joined: 10 Mar 2007
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PostPosted: Fri Sep 14, 2007 3:27 pm    Post subject: Reply with quote

I'm not sure if yours would be the same as mine but mine was on the right hand side and it is fairly simple to change it, just slip the electric cable which is connected to it off, unscrew with the usual sparkplug tool and pull it out and pop the new on in its places....thats a very simple explanation of what to do....just so you get an idea how easy it is.....fiddly but easy, I'll let someone with more knowledge help you with a more in depth answer Smile

Just 1 word of warning though, don't drop it in the case that its enclosed in, its a right pain in the a** to get out.....took me ages to fish mine out.



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WilliamHung



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PostPosted: Fri Sep 14, 2007 8:49 pm    Post subject: Re: How To Change The Spark Plug Reply with quote

kimberlytracy03 wrote:
I just went out and bought one of these NKG Spark plugs, I have the RoadRunner Road Queen, the info on under the seat says it takes a DPR7EA-9, thats not what your post says.....is this one the right one? How difficult is it to change them? Can a "woman" do it?


His is a 50cc, yours is bigger so it probably needs a different plug. The procedure is the same or very similar, just different panels for different scooters. Some scooters such as my Retro donesn't even need any panels to be removed to change the plugs.

Wil



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kimberlytracy03



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PostPosted: Fri Sep 14, 2007 8:51 pm    Post subject: How To Change The Spark Plug Reply with quote

My scooter says it needs the "DPR7EA9" plug, I cant find ANYONE with this number in the Iridium, any ideas where I can get one?


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easyrider81



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PostPosted: Fri Sep 14, 2007 10:13 pm    Post subject: Reply with quote

iridum plugs like NGK normally end with IX so I would guess DPR7EA9 would be DPR7EIX-9 but don't take my word for it Laughing wait for the experts to confirm or deny Razz



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Yellow Scooter



Joined: 20 Mar 2007
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PostPosted: Fri Sep 14, 2007 11:24 pm    Post subject: Reply with quote

It's true, the numbers of your plug need to be cross referenced over to theirs.
Mines a stock CR7HSA
Iridium is a CR7HIX



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frainey



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PostPosted: Fri Sep 14, 2007 11:26 pm    Post subject: Reply with quote

I think thats only with NGK and Iridium, Best bet is taking out the old plug and taking it to a bike shop then asking for the match with NGK.
That way if you get it wrong you can blame them Wink



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Kiddah



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PostPosted: Thu Sep 20, 2007 11:10 am    Post subject: Reply with quote

YellowScooter wrote:
It's true, the numbers of your plug need to be cross referenced over to theirs.
Mines a stock CR7HSA
Iridium is a CR7HIX


same as mine....however averywhere I went didnt have the CR7HSA or the CR7HIX in stock so I had to get the CR7HS instead......there is a difference obviously becuase of the name but I dont know what it is.....still works though



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