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which cylinder is number one (SOLVED)

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which cylinder is number one (SOLVED)

PostAuthor: mikey-son » Tue May 22, 2012 5:06 pm

in the manual it says that cylinder 1 takes a certain size jet and cylinder 2 takes another size jet. My question is which is 1 and witch is 2 ? (front or back?) mine has the same size in both and its not running right.
Last edited by mikey-son on Tue May 22, 2012 7:27 pm, edited 1 time in total.

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Re: which cylinder is number one

PostAuthor: totallyredvirago » Tue May 22, 2012 5:17 pm

rear is #1
front is #2
......dan
82 xv 750 skull on grips,levers,3rd brake and side covers.soft bags and tool bag, relay for coils, fresh inferno red, paint code PEL(red)

no time to do it right..always enough time to do it twice.
it is if is isnt :con:
If it went together easy... you forgot something.
when in doubt.... ground it out!

http://www.viragotechforum.com/viewtopic.php?f=140&t=35947 (bare bones wiring81-83 xv750)
http://www.viragotechforum.com/viewtopic.php?f=140&t=48895 (91 up xv750 bare bones)
http://www.viragotechforum.com/viewtopic.php?f=140&t=36987(84-85 xv700,1000 bare bones)

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Re: which cylinder is number one

PostAuthor: mikey-son » Tue May 22, 2012 7:26 pm

thank you

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Re: which cylinder is number one

PostAuthor: charnich » Tue May 22, 2012 10:54 pm

totallyredvirago wrote:rear is #1
front is #2
......dan


Dan, is that supposed to be true of all Viragos? I recently did a ring job on my 88 XV250 RT66 ed. I was meticulous on disassembly to keep all parts from front and rear separated and organized. As they came off they each had their own drawer marked "front" and "rear". I put it all back together in the same order it came off. In my case 1 was on front and 2 rear. After some researching on the topic I worried that I did it wrong and scoured the original service manual that came with the bike and lo and behold it stated #1 as front and #2 as rear. The other bizarre thing is that for setting timing the manual stated the "T" to be lined up with the front timing mark and the "l" was to lined up with the rear, which seemed backwards from common knowledge. I went ahead and timed it out to the manual specs and everything is working really well. Its only been about 20 miles though. Its as if everything is exactly reverse for the 250.... Does anyone else have any experience with this? I really hope I didn't do it back-asswards. BTW the section I'm talking about starts on 4-49 in the manual if anyone wants to look it up in the original factory manual.

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Re: which cylinder is number one (SOLVED)

PostAuthor: totallyredvirago » Wed May 23, 2012 6:00 am

not sure on the 250. BUT i did find out that a 1990 xv535 japan spec has the front cylinder as #1..
since his is a xv1000 i know for sure that #1 is the rear....dan
82 xv 750 skull on grips,levers,3rd brake and side covers.soft bags and tool bag, relay for coils, fresh inferno red, paint code PEL(red)

no time to do it right..always enough time to do it twice.
it is if is isnt :con:
If it went together easy... you forgot something.
when in doubt.... ground it out!

http://www.viragotechforum.com/viewtopic.php?f=140&t=35947 (bare bones wiring81-83 xv750)
http://www.viragotechforum.com/viewtopic.php?f=140&t=48895 (91 up xv750 bare bones)
http://www.viragotechforum.com/viewtopic.php?f=140&t=36987(84-85 xv700,1000 bare bones)

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Re: which cylinder is number one (SOLVED)

PostAuthor: sbrbot » Sun Apr 15, 2018 5:13 pm

Today I was with one very experienced technician who has a lot of experience with Viragos. He told my that this (what is cylinder #1 and what #2) depends (on V-twin engines) on direction in which crankshaft rotates. On xv250 it rotates towards front cylinder and therefore front cylinder is #1 (as embossed on cylinder head). On xv535 it is opposite rotation, xv535's crankshaft rotates towards rear cylinder and rear cylinder is #1 (unfortunately it is not embossed on xv535 and therefore confusion). To make confusion even greater, some service manuals say that front cylinder is #1 (seems, true for xv250, not for xv535).
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Re: which cylinder is number one (SOLVED)

PostAuthor: sbrbot » Sat Apr 21, 2018 1:00 am

Hynes Service Manual says for xv535, the REAR cylinder is #1.

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