[Greaper]

Can anyone give me a code of Chainsaw in right hand

[offon]

Weapons can't be changed to be equiped in the other hand. Anyway, if you attach it (if a chainsaw object exists) it won't function as a weapon, so you won't be able do inflict damage.

https://sampwiki.blast.hk/wiki/AttachObjectToPlayer

[RedFusion]

SetPlayerAttachedObject would be a better choice as you can attach these objects to bones, left / right hand for example.