OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines victa fullcrank blade boss size

i have found 2 sizes of bosses. i need

the pulley on the left is from a 550 so i believe the boss in the middle fits into the pully but the shaft size is larger than any other full crank i have. found a fella the other day that said he would machine one for me. i presume i cannot get one from anywhere?

Question. do i have to use any particular type of steel?
cheers

do you have side start fullcrank around ? i know top of the crank is different it had a flat side to locate the flywheel but wasnt aware the bottom of it was too !
now you know how easy it is to remove it find another and measure the O.D of it , see if its the same then knock it off and try it
i think i only have the one here and it is from a 550 so not much help really , should need to machine one up im almost sure ! try another side pull 1st that doesn't have the pulley already on it

vccomm. the other side pull i have has the small shaft

i'll have a look around tomorrow , this has got me now , might just learn something new here !! i think 3 engines sidepulls inc' the 550 interested now to see if there is a difference

All the self propelled run a longer shaft as well dont they??

just measured, both are 50mm. i recon there is no need for a longer shaft as the blade plate compensates, there are also spacers between the motor and the frame

i shouldnt think they would but stranger things have happened , would be hard to imagine they had crankshafts made for a few self propelled's . even a different diameter and maybe taper is a toughie but i will look at some tomorrow too cold now hahaha , you seem to have a few laying around there too rusty see what you come up with ?
got me thinking here

same blade carrier just longer blades on mine , still have the plate . whats 50mm ? exposed end of crank ?? a lot of machines did have spacers its why you refit them depending if it had or didnt have .
why not just change the topends over ? problem solved

yes exposed end of crank. top end change didnt you say it was 20 thou bored out, would it fit. i presume you cannot source blades for this one? they are huge

VICTA CA09276P or Jakmax JM7020-2bb

Pretty sure thats the blade number.

its rebored inside doesnt mean its different , just the piston is larger and needs to stay the same . (see matched sets) change the barrel AND piston from another engine keep them matched and together = same barrel and piston from one to the other engine .
easy huh

Just recieved this from one of my operatives in the field
Boss size rectified, problem with motor was bent shaft???
Into the breach

Now
putting the motor from this on
I just hope i have the belt setup right, checked youtube. I know this motor runs really well so i am quietly confident, but because i said that it wont go. will let you know

!!!!!! it would seem that the blade plate is stuck hard against the frame. I put the spacers in maybe i should have left the washers out could i put a large washer inbetween the boss and the blade plate or do i need to pull the motor off and take the washers out and see?

phuck it i have a 9 inch angle grinder and a welder.
I can do anything???

no more. last time rambo was on i broke a mower rambo 3 is on tonight so my missus said nnnnooooo

hmmmmmmmm didnt put 2 sets of spacers by chance ?? look close , they are already fitted between crankcase and nut , then maybe you put more under nuts between nuts and base ?
please check 1st ! then lets know whats going on ?

vccomm thanks for the interest it seems to be the boss. sorry to waste your time. will let you know when i get one machined. meanwhile i put that motor on the utility i got last night

Have no idea how to purtify it. will clean the blade up tomorrow too cold now.
whoever does it could probably kill this frustrating thread.
thanks

just use a brush this time

HURUMPH