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Post by geoffh on Jun 30, 2018 15:46:49 GMT -5
So my vertical has been a pain to start,insert picture of boot and sweat,sat around for 28years it.s excused for being a tad fussy about running or not,mostly not.But I want it to be my summer daily drive!.Symtoms
will kick start eventually,then runs sweet as a lark in spring stock everything no mods yet once stopped will restart mostly replaced coil,plug,reset carb,leak test,comp test all passed with honours give it a few days standing and back to zero,my solution was to remove the reed block and syphon out the gunk I,d pumped in kickstarting it over and over again.
So the cause of all my grief and fustration was the petcock diaphram leaking a little gas down the vacum line and thus into the engine,an easy fix but hard to find.
geoff
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88jog
Scoot Junior
Posts: 11
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Post by 88jog on Jul 5, 2018 13:32:19 GMT -5
I have the same scooter, and my petcock leaks slightly as well but I dont have the starting problems you do.
Did you find a rebuild kit for the petcock? I see I can buy an entire assembly on amazon for about 40$.
Maybe I'll just replace the little oring and put a slightly stronger spring. The diaphragm still seems ok without any holes. Not quite sure why it's leaking actually. I get a drip off the bottom of the carb about once every 10 minutes.
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Post by geoffh on Jul 5, 2018 15:27:41 GMT -5
I have a replacement enroute from china $4.58 inc shipping it,s a manual shut off should be a direct swap over let you know when it gets here 5/6 days if the trade winds hold up.
geoff
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Post by geoffh on Jul 17, 2018 15:32:50 GMT -5
Ok my new petcock arrived and is almost a direct replacement it bolts right on but I had cut some of the plastic shield to route the fuel pipe.It would appear that lots Yamaha,s used this type of petcock the important size is the tank fitting it,s 34mm lots available on flea bay around $5.Grandad jog is reborn (thumb)starts first kick everytime.
geoff
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