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V100 spark plugs

DistritoF.

DistritoF.

Tuned and Synch'ed
Joined
Mar 28, 2023
Messages
45
Location
Mesa, Arizona
Good morning.

This week I will be doing the 15,000 ml service on the v100 Mandello but I do not know what spark pugs to use. The manual tells me to take it to the dealer (it also says that "gasoline is very flammable" BTW) and the service manual that I have does not give me a specific number. Does anyone know the exact plug?
Thank you guys. Maybe I need to refine my search techniques.
 
There typically has been an emissions sticker under the seat on previous models that would give you this spec. Check and let us know.
 
DistritoF. said:
Thanks again GTM. I looked and yes, they are NGK LMAR8EI-7. So Vespa spark plugs :)
Click to expand...

Does anyone know where to buy them in the US ? on does anyone that understands electricity can tell me the exact equivalent.

I can not find them online in this country and the shipping from Europe is x2 the cost of the spark plugs.

Thank you very much guys/gals
 
Ebay has them. Free shipping from UK. Seller name powersparks 99.6% feedback.

They're iridium plugs so they don't really need changing for many thousands more miles.
 
Incidentally, anyone has information on the plug gap? The manual states 0.8 mm (CHA - 23) and 0.7 mm (MTN - 63). My bike's plugs came gaped at 0.65 mm.
 
Always an interesting subject. Recalling back setting valves on sohc Honda 4s.
But I always wonder about tolerances back in the engine early days, no valve cover, total loss oil, etc. H D had the soup can carb.
 
Are you sure you need to replace them yet? Iridium plugs last a lot longer than your basic lawn mower plug as fitted in most other vehicles. That is why they charge extra for Iridiums as well. If you have a service manual it should give you all details needed. If the US one doesnt try to find a UK manual.
 
ML Performance (USA) website claims to have them @ $8 each on a black Friday deal. Never bought anything from them though.

T2
 
john zibell said:
Only the outer electrode is moved. Adjusting them is a normal procedure.
Click to expand...
John, with all due respect most spark plugs come pre-gapped better than most humans can accomplish. I worked at a major auto manufacturer’s engine plant for 30 years. We discontinued AC because their spark plugs came in not to speck. We switched to NGK. The manufacturers don't waste money having assembly operators check gaps. I say check the gaps but adjusting them should not be necessary. I would take a plug with a faulty gap back to the retailer. All of what I have just said only applies to OEM-recommended plugs for a particular model.
 
I guess then that MG is a manufacturer not wasting time checking gaps, otherwise the plugs in my V100 wouldn't be gapped to a value other than the two different values given in the shop manual. As I wrote above, manual says 0.7 mm an 0.8, bike came with 0.65 on both plugs.
 
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