Any 2 stroke specialists out there, need crank advice

[jimspeed]

Hi guys I'm helping out a young mate who has bought a Yamaha Jog RR scooter and it needs a new big end and conrod.
Now I know the crank needs to be pressed apart to change the pin and bearing but does anyone have any advice on getting it all pressed back together (I have a press and measuring tools etc)
or are we better off taking the crank (its out now) to someone that does motorcross bikes etc?
cheers Jim
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Hyosung cruise 125(passed test on, sold) Kawasaki el 252 (better than expected but sold on) Kawasaki GPZ500S first "big"bike.(sold) ZZR600 E5..Z750 2007,ER5, currently on a 2008 Enfield bullet electra x and loving it..
,"Alpha-9: Is there any correlation between dyno rod and dyno kits?"

[Rogerborg]

I heard Warped only needs 2 strokes on his crank to get his big end away. [BOOM, TISH]
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[SpannerMonkey]

If I were you I'd just replace the entire crank for a performance item...
https://www.adrenalin-pedstop.co.uk/p/Minarelli_Race_crankshaft_from_Doppler_%E2%80%93_Aerox_etc_with_10mm_pin-3371.aspx

Something like this... More bang for your buck
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My bike? A YX140 powered one-off Monkey Bike, something a little different!

[jimspeed]

already bought the con rod kit now tho
I'm thinking of just making a small jig to clamp the flywheels together and press the new pin straight thru on top of the old one then see how tru it still is on v blocks?
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Hyosung cruise 125(passed test on, sold) Kawasaki el 252 (better than expected but sold on) Kawasaki GPZ500S first "big"bike.(sold) ZZR600 E5..Z750 2007,ER5, currently on a 2008 Enfield bullet electra x and loving it..
,"Alpha-9: Is there any correlation between dyno rod and dyno kits?"

[Vincent]