Walbro WJ501

msp4662

New Member
Joined
Apr 23, 2020
Messages
15
So I want to use a walbro carb as there about the easiest to tune and work great so I'm curious is the WJ 501 the size I want as I would like a bit more performance.
 


msp4662

New Member
Joined
Apr 23, 2020
Messages
15
Sorry didn't realize I didn't mention what it's going on. 66cc with a dio reed and trenched cylinder maybe a performance pipe.
A just noticed they come stock on a 90cc chain saw
 

Akutey

Well-Known Member
Joined
Dec 10, 2018
Messages
495
I did walbro long time ago.

Stick with 11-16mm in venturi size. Small venturi around 8-9mm will be super sensitive on throttle and is very quick but limited at 20mph. 22mm was hard to tune and never got high speed jet to sing without idle or low end going.

Make sure you tap from the case and not the transfers for the pulse port.
 
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