Fitting GP kickstart piston - have i done it right?
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alanscottj
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Is there a procedure that you must follow when replacing the piston on the kickstart shaft? I can't understand why mine is still not engaging when I kick it over. I am wondering if I have not done something I should have when I replaced the piston. Any thoughts?
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Trojan
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Hi mate, when the piston was replaced and the stud tightened back up, was there free movement ( up and down ) on the shaft, I had similar problem and turned out it was sticking in the shaft......if its an LI type endplate check the guide plate on the chaincasing also........ 
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alanscottj
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When I replaced it, the piston was moving in and out nicely, when I pushed it in with my finger, then I put the casing back on and it started playing up again. Now, when the kickstart slips, when I push it down with my foot slowly, I can hear a click as it obviously tries to engage each tooth on the first gear and then eventually it will engage and I get pressure and am able to kick the engine. I am thinking that it 'must' be sticking because if it were anything else, for example if it weren't coming out far enough, then it would do it all the time.Trojan wrote:Hi mate, when the piston was replaced and the stud tightened back up, was there free movement ( up and down ) on the shaft, I had similar problem and turned out it was sticking in the shaft......if its an LI type endplate check the guide plate on the chaincasing also........
Lambretta Series 2 Rat - RB260, SuperTourer, Cyclone 5 gearbox ๐๐
Sold and fitted a 'J' range Kickstart piston by mistake???alanscottj wrote:Is there a procedure that you must follow when replacing the piston on the kickstart shaft? I can't understand why mine is still not engaging when I kick it over. I am wondering if I have not done something I should have when I replaced the piston. Any thoughts?
I did it once
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Trojan
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Is the stud that screws into the piston OK , looking for any highspots or wear may be the cause on the piston travel not engaging fully, what endplate is it LI or GP/SX type with the heel as this may show any wear ...hope this helps..... 
Similar problem a while back,i cured it by elongating the slot where the locating pin slides up and down!
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Mag
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When I fitted my 5 speed the teeth on the piston were engaging all the time. I thought I was going to have to get into major surgery but I found another piston ant the hole for the pin was further down so pulled the piston back a little further and that one works fine. Seems like there are variations even in this simple component.
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dapper
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Did you change the reference pin as well? These can wear fairly quickly and the ramp scores a deep groove in them, affecting where the kick start plunger engages with first gear.
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alanscottj
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Yes, changed the pin too!dapper wrote:Did you change the reference pin as well? These can wear fairly quickly and the ramp scores a deep groove in them, affecting where the kick start plunger engages with first gear.
Lambretta Series 2 Rat - RB260, SuperTourer, Cyclone 5 gearbox ๐๐
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alanscottj
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I might have a go at this, how much longer did you make the slot?kevspeed wrote:Similar problem a while back,i cured it by elongating the slot where the locating pin slides up and down!
Lambretta Series 2 Rat - RB260, SuperTourer, Cyclone 5 gearbox ๐๐
