Piston fit Jonsereds

[doc874]

Anyone know if a Jonsered piston from a 510 sp will fit the 490? I checked on the chainsaw collectors site, cylinder bore is the same at 44mm, the piston stroke also matches at 32mm as well they are both 49cc's. I am wondering if the wrist pin hole placements are the same.

 

[PB]

Anyone know if a Jonsered piston from a 510 sp will fit the 490? I checked on the chainsaw collectors site, cylinder bore is the same at 44mm, the piston stroke also matches at 32mm as well they are both 49cc's. I am wondering if the wrist pin hole placements are the same.

Couldn't say for sure but my guess is not. A piston from a JRed 590 or Partner 500/5000 will fit. Someone correct me if I am wrong.

 

[SawTroll]

One from a 590 will not fit, as it has a larger bore.

My guess is that the Partner 500/5000/490/510 ones will fit, as will Husky 49 and Jred 2050 ones - but I am not sure.

 

[AngelofDarkness]

I know a piston from a 49SP will fit a 52 jug.

 

[doc874]

One from a 590 will not fit, as it has a larger bore.

My guess is that the Partner 500/5000/490/510 ones will fit, as will Husky 49 and Jred 2050 ones - but I am not sure.

Scanned fleabay for each of those but no luck so far. Man its hard to fine a piston for this thing. I almost had the 510sp today but it got away as well.