Clinician
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Orange jonway yy250t
Posts: 5
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Joined: Sept 4, 2010 21:55:33 GMT -6
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Post by glenn250 on Oct 1, 2010 10:12:44 GMT -6
I need the plug gap in thousands for the 244 cc engine. the book gives it in MM i think?
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Post by Cruiser on Oct 1, 2010 11:11:39 GMT -6
Welcome to Scooter Doc, Glenn250. The gap is stated as .6 - .7mm so that would be 26 thousands of an inch.
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Scooter Doc
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2009 Jonway YY250T-2 aka Bali 250cc
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Joined: Jul 17, 2010 21:02:54 GMT -6
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Post by fairweasel2323 on Oct 1, 2010 19:30:24 GMT -6
I got a NGK -9 plug with a wider 9mm gap what was recommended on the scooter side plate a DPR7EA-9. It had a DPR8EA. But yeah gaps is around .026 I think mine when I looked on other side of of plug gapper at 9mm it was 28-30 thousands
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Scooter Doc
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2009 Jonway YY250T-2 aka Bali 250cc
Posts: 359
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Joined: Jul 17, 2010 21:02:54 GMT -6
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Post by fairweasel2323 on Oct 1, 2010 19:33:21 GMT -6
I got a key chain plug gap checker which has both MM and thousands on it at Auto Zone for 1$ I think? They had them right by the register I liked it had the mm measurements.
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Clinician
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Posts: 43
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Joined: Apr 23, 2010 16:15:15 GMT -6
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Post by barry on Oct 3, 2010 16:42:31 GMT -6
Apparently the NGK DPR8EA is not the recommended plug for the CN250 Helix engine. The NGK "DPR7EA-9" or "DPR7IX-9" is the correct standard for the CN250, 244cc Honda (CF Moto) clone engine. Also the "E3-Powersports" plug: "E3.36" is also recommended.
The gap for DPR8 is .26, DPR7 is .32 - .35 I think.
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