1983 510 4T

hello I am about to tear into my 83 510 4T engine.. anything that I need to look out for..?? Anything that is a common problem..?? I have the workshop supplement for this engine.. so all good there..

I'm not an expert on these at all, but based on everything I've read, you should replace the valves with new forged stainless steel ones like sold by HVA-Factory.

....or take a look here for stainless steel valves and guides, also
http://www.kpmivalvetrain.com/index.html

Yep, ignition already taken care of..it has a Ducati ignition on it... still SEM tho...?? interestingly enough..when it came to time to using a puller to get the flywheel off.. the old 70's FEMSA puller fitted ...

Yes, Use one piece Valves, as the ones they came with had the valve head welded to the stem and they have given the sort of trouble that you don't need!

Also, We run a bit more valve clearance to make hot starting a little easier...

We have experimented with hot start devices too to weaken the mixture when really hot. This is the main cause of starting difficulty - along with poor starting technique!

Use modern fully Synthetic oil and change it every ride. Also, keep the filter screen in the cylinder clean. This 12mm hex rounds off easily, so we have made 17mm hex Ti replacements...

If you are using a foam air filter - make sure you fit a flashback mesh screen between the filter and the inlet boot to help prevent a fire!

All available of of the website...

Andy Elliott.

Thanks Andy.. I just bought a gasket kit from you ..along with some Ti Ohlins bottom bolts.. (Thanks for the T shirt)...So..how much difference in valve clearance are we talking about...?? I have a K&N airfilter..and a screen.....

Pictures.. can we have some piccys, just luuurve the old a/c 4 bangers

Spent all afternoon on Monday sandblasting.. frame and swing arm already done... anyone have any ideas on what to do for piston rings should I need them..??

Where in aus are you hiding out???

hi watto450
I m owning a '83 fourstroke too ... please take some pics

Anyone able to tell me the size of the seal behind the ignition..in the "good old days" the parts book would specify the size...

Phil at Husqvarnaparts .com has manuals for 17 bucks on cd

I have a spare parts manual.. but.. the sizing of the seals are not quoted any more.. back in the 60's the parts manuals also had the size and length of bolts as well... buy not anymore ( 80's)..

All Husky manuals are free to download from our site...

Andy.

Have many manuals downloaded for free. thanks to everyone.. BUT.. can anyone tell me the size of the seal..?? Please..

On my 510, I have a 25x35x7.
From memory the 510 normal size is 25x35x6.
But in industry seals you find easely 7 mm not 6.
So I put a 7 mm instead of the 6 mm with no problems.

Thanks Michel.. so..as an example a 1977 390 seal is 25x36x6 and is part # 29 65 444-01, but the 510 seal is the same size as quoted by you.. is part # 15 13 725-01... I wonder why that is..??

Finally got 510 apart.. rocker roller tips seem a little loose... anyone know of where to get replacement tips....?? Also a cam-chain.. Any help with where to source replacement items would be appreciated

Black Diamond chain from any good bearing or engineering supplier is suitable for timing chain. Buy a roll of their best quality stuff - not the cheap type. Will cost about $120 from memory. Enough for several chains.

Roller tips? The rollers that run on the cam lobe or the threaded adjusters that push on the valve stem? If the rollers then I expect they are just SKF ball bearings.