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Thank you so much for this, I was having a really hard time with the manual. I know I didn't touch the cam gear bolts among other things I probably didn't pay attention to.

I'll double check this, but the main issue I've been having is the fact that the manual only ever refers to the intake cam, and never once refers to the exhaust cam when describing timing. It says to align the L mark with the line, and then to set "the" cam to have the dot align with the arrow...

Hi and thank you, I've checked out those manuals and have still ended up hitting brick walls ! I'm hoping for some kind of troubleshooting guide, or somewhere I can get some answers as to why this bike isn't running

Hi!! I've made probably too many posts here asking for help on my '82 Maxim. It has the twin cam motor, and I'm having a lot of trouble finding any usable information / manuals / tutorials / people who know anything about it. I think a lot of my issues are coming from having set it up as if it's...

I'll give that a try and see what happens, it's currently about 2 turns out

I'm pretty sure the maxim, seca, and special all share the same DOHC 400, but there could be differences in tuning. The numbers read low to me, too, but at this point I'd be happy if the bike just ran and idled properly, which it (sort of) did before. So something I've done has messed that up...

hi, many thanks for replying - yea, I don't think the compression would be an issue to at least START it. This bike has electronic ignition timing, so is it still settable? My understanding was that it was automatic. My cam timing looks good to you? I was having trouble deciphering the book.

It's me again - the bike won't start. Here's a brief summary of everything I've done. 1982 xs400j Maxim (dohc), bought with carberator issues and revhang, wouldn't rev above 4500 rpm. Cleaned carbs, retested, no change. Rebuilt carbs with original carb parts, some change - no longer running...

Thanks for the advice - I've been trying to avoid this situation by only touching one thing at a time, but things kept not improving. I don't own a strobe, but I do have a simple timing probe. This is my first real project, so I'm learning as I go. I'll give this a shot and see what I find !

This is getting frustrating - it seems like the thing should just start and run with no issues. It's an '82 Maxim 400, so a DOHC - I bought it with issues, if you wanna read those, they're in my last few posts. Basically, I've put in new shims so all of the valve clearances are between .1 and...

Think I'm adjusting the wrong screw, again.. I only adjusted one screw, the one that's in the middle of the two carbs and closest to the engine. I turned it in until it was difficult to turn and then out one and a quarter turns. I don't have a compression tester at the moment. The other thing...

alright, I just went and checked on it. Both cylinders are getting spark, there's fuel in the float bowls (and vapor comes out of the spark plug holes when cranked without plugs), and the filter isn't an issue- it's off at the moment. The vapor coming out of the spark plug holes is what's making...

Thanks for the replies - ordered some new shims, put them in, all but one valve is at .15 mm, with that left intake being at .1 because I suppose I did my math wrong - but they're all in spec. Thing is, it doesn't start now. I just replaced my spark plug boots, checked float bowls, tightened and...

Gotcha, how do I know which shims are right? I've measured my shims, and know that I need 3 that are 2.65-2.7 and one that is around 2.75 mm thick, but how do I know which ones to order? Are they specific to the xs400 or are there general bike shims? Sorry, this particular thing is insanely...

Looks gorgeous - what tank is that?

Right, so after looking through some threads, it seems like the proper spec is .1 to .15 mm - mine are at half to a third of that. It's weird, I assumed the gap would widen over time. How can I go about adjusting it to spec? Do you think this extra - tight clearance causes some of the issues I'm...

Hi all, I'm still frantically trying to sort everything out on my '82 Maxim 400 before the winter sets in so I can get at least a taste of riding this season. So far, I've rebuilt and cleaned the carbs, adjusted them (mostly) correctly, sorted out some sticky slides, and cleaned the tank. All...

Hi all, new to thw forum and bikes. Just picked up an '82 maxim 400 xs. Guy that I bought it from put in a carb rebuild kit and changed everything except the floats. The bike started ran but didn't rev above 4500 rpm. I went throught the carbs and put in all the original hardware, cleaned all of...