Learning experience: valve adjustment

Rick · 04-13-2009, 09:48 AM

I decided to take this on this past weekend after reading the possible consequences of the valves being out of spec. So I gathered up the tools and took it apart. Had a lot of difficulty getting the generator cover cap off, so I used the alternative method of finding TDC (peek in the hole while rolling the bike in gear). Finally get that set, and went to check the clearance. On all of them I started at the middle of the spec range and couldn't fit the feeler in there, so went down to the low end of the range, and still couldn't fit it on some of them. It was fairly difficult just getting the feeler gauge in the right spot with all of the wiring harness and frame in the way. They all seemed tight but I just didn't feel comfortable about it so I put it back together and took it to the shop. They confirmed that the valves were tight and put them back into spec.

So I go to pickup the bike, and it stalls about 1/2 mile from the shop. Finally get it started, go another 1/4 mile and it stalls again. At this point I'm getting pretty pissed. So I look down, and see that the mechanic had failed to hook the vacuum hose up. So, to compensate, he cranked the idle WAAAY up, and set the petcock to "prime". Must've been smoking crack that day. Anyway the bike runs awesome now (after resetting the idle). Funny thing is, if I hadn't taken it apart earlier in the day, I probably wouldn't have known to check the vacuum hose, as I'd never worked on that part of the bike before.

Oh, and I found and fixed the source of my lingering oil leak....one of the head bolts was not quite snug. With the gas tank off it was very easy to find the source. So, two problems solved!

Moedad · 04-13-2009, 01:09 PM

Good going, Rick! Those shop mechanics...they seem to come out of the same school. Anyway, glad your bike is running great now.

alanmcorcoran · 04-13-2009, 01:37 PM

At least it was a happy ending. You did a lot better than most of my outings on "beyond the basics." My current thinking for these things is, "if I'm only going to do it once or twice in my life, wouldn't it make more sense to have someone that's done it a few hundred times or more do it?" Then of course, I usually find the guy who is also figuring it out for the first time.

I have heard a lot about this vacuum hose. Is it easy to locate?

Water Warrior 2 · 04-13-2009, 01:43 PM

Alan, the vacumn hose and fuel line are attached to the back side of the petcock. Pretty easy to find first time. No special tools required to unhook them either.

04-13-2009, 09:48 AM	#1
Rick Member Join Date: Jul 2008 Location: Driftwood, Tx Posts: 64	Learning experience: valve adjustment I decided to take this on this past weekend after reading the possible consequences of the valves being out of spec. So I gathered up the tools and took it apart. Had a lot of difficulty getting the generator cover cap off, so I used the alternative method of finding TDC (peek in the hole while rolling the bike in gear). Finally get that set, and went to check the clearance. On all of them I started at the middle of the spec range and couldn't fit the feeler in there, so went down to the low end of the range, and still couldn't fit it on some of them. It was fairly difficult just getting the feeler gauge in the right spot with all of the wiring harness and frame in the way. They all seemed tight but I just didn't feel comfortable about it so I put it back together and took it to the shop. They confirmed that the valves were tight and put them back into spec. So I go to pickup the bike, and it stalls about 1/2 mile from the shop. Finally get it started, go another 1/4 mile and it stalls again. At this point I'm getting pretty pissed. So I look down, and see that the mechanic had failed to hook the vacuum hose up. So, to compensate, he cranked the idle WAAAY up, and set the petcock to "prime". Must've been smoking crack that day. Anyway the bike runs awesome now (after resetting the idle). Funny thing is, if I hadn't taken it apart earlier in the day, I probably wouldn't have known to check the vacuum hose, as I'd never worked on that part of the bike before. Oh, and I found and fixed the source of my lingering oil leak....one of the head bolts was not quite snug. With the gas tank off it was very easy to find the source. So, two problems solved! __________________ If you're not living on the edge you're taking up too much space! Login or Register to Remove Ads
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04-13-2009, 01:09 PM	#2
Moedad Senior Member Join Date: May 2008 Location: Orange County, CA Posts: 642	Re: Learning experience: valve adjustment Good going, Rick! Those shop mechanics...they seem to come out of the same school. Anyway, glad your bike is running great now.
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04-13-2009, 01:37 PM	#3
alanmcorcoran Senior Member Join Date: Jul 2008 Location: Anaheim, CA Posts: 2,926	Re: Learning experience: valve adjustment At least it was a happy ending. You did a lot better than most of my outings on "beyond the basics." My current thinking for these things is, "if I'm only going to do it once or twice in my life, wouldn't it make more sense to have someone that's done it a few hundred times or more do it?" Then of course, I usually find the guy who is also figuring it out for the first time. I have heard a lot about this vacuum hose. Is it easy to locate? __________________ [hr:5yt6ldkq][/hr:5yt6ldkq] http://alanmarkcorcoran.com Motorcycles, Music, Musings and More… Login or Register to Remove Ads
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04-13-2009, 01:43 PM	#4
Water Warrior 2 Senior Member Join Date: Dec 2006 Location: Squamish B.C Canada Posts: 11,409	Re: Learning experience: valve adjustment Alan, the vacumn hose and fuel line are attached to the back side of the petcock. Pretty easy to find first time. No special tools required to unhook them either.
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