johng2 Posted November 19, 2015 Report Share Posted November 19, 2015 Hi,My first post here, so bear with me.I have a 250 Sherpa Model 80 circa 1971 which hasn't run for about ten years. It was running fine when I "put it away" and has been kept in a heated garage.Tank and carb were drained and some oil put down the cylinder. The bike has been turned over very occasionally over the years, always after a little oil being put into the cydlinder.Sooo. There's an event I'd like to do over the Xmas break. It's the only thing I've got planned for it, so don't want to do any major work to get it going. But also don't want to damage the bike.What's the best practice for recommissioning this bike, engine wise?Just fuel it up and kick it....or what?( I'm not really experienced on 2 stroke engines. I'd know what to do with a 4 stroke. )Any help much appreciated.ThanksJohnPS: My old notes say 25:1 pre-mix with semi-synth. Does this sound about right?Also, I guess I should change the fluids, so gearbox and transmission oil advice also welcome.Thanks again. Quote Link to comment Share on other sites More sharing options...
feetupfun Posted November 19, 2015 Report Share Posted November 19, 2015 Get a new air filter. The old one will be very fragile, and may get sucked into the motor, or be restrictive 25:1 is a lot of oil in the premix If you have put oil down the spark plug hole a few times, it will be very smoky when it starts The crank seals may need to be replaced due to old age May need to disassemble the clutch to free the plates if they don't release when you have a test ride Go for a test ride long enough to fully warm up the motor before you drain the oils 1 Quote Link to comment Share on other sites More sharing options...
johng2 Posted November 20, 2015 Author Report Share Posted November 20, 2015 Thanks. I hadn't thought about the air filter. Good point. If the crank seals have gone then that'll be too much work for just one event over Xmas...we'll see. Thanks again. 1 Quote Link to comment Share on other sites More sharing options...
johng2 Posted November 20, 2015 Author Report Share Posted November 20, 2015 It goes :-) Checked the air filter, bunged in some premix @ 50:1 semi-synth and after some kicking it started. But wouldn't tick over. Stripped and cleaned the carb and it started easily and even ticks over. Clutch was well sticky, but eventually freed up a bit. Will change fluid next time I ride it. Whoopee! 2 Quote Link to comment Share on other sites More sharing options...
fastbelly Posted November 20, 2015 Report Share Posted November 20, 2015 Nice one, if it goes...ride it! Shame to drag it out for one event. Why not ride it regular? Quote Link to comment Share on other sites More sharing options...
trialsrfun Posted November 21, 2015 Report Share Posted November 21, 2015 Also remove the wheels to check that the brake linings are secure. 2 Quote Link to comment Share on other sites More sharing options...
johng2 Posted November 21, 2015 Author Report Share Posted November 21, 2015 Check the brake linings are secure. Another thing I hadn't thought of. I didn't know they might detach simply with time. Nice one :-) Thanks. Quote Link to comment Share on other sites More sharing options...
trialsrfun Posted November 21, 2015 Report Share Posted November 21, 2015 Just a good service really so that you know everything is in working order. Quote Link to comment Share on other sites More sharing options...
johnjsy Posted November 22, 2015 Report Share Posted November 22, 2015 Hi Johng2, all the above is sound advice,but if it was me in your situation,lube all cables plus the chain. Why ? Preventive maintainance really. A stuck throttle at the wrong moment & you are running into the back of someone or worse still something solid. Broken leg or arm or worse. That's their or your Christmas ruined,so please be sure the cables are in the best of condition. Also,I assume your crash helmet is not on its last legs as well ? Hope this motivates you a bit !! John JSY. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.