3 replies to this topic

[Pairaminis]

What does WaxStat refer to on a a SU HS4 carburetor?

Jack

[wile e coyote]

At the very bottom of the carb is the jet assembly (the lowest point slighly above the bulkhead) - waxstat is the latter type and as the name suggests has a small "wax" (not sure whether it really is) element in it that adjusts jetting marginally in response to temperature - it's a fairly bulky assembly  with debatable benefit....the early type is a fixed jet which is much slimmer in profile....

 

If you've a waxstat version and for whatever reason want to retro - convert it - its very very easy (for us in the UK!!!) remove the bottom cap - remove the waxstat element - replace with two one penny coins and reassemble - job done.....

[nicklouse]

the bottom of the carb there is a wax tremostat that self adjusts the mixture when hot.

 

 

more reading. http://www.theminifo...stat-hs4-carbs/

[Pairaminis]

Thanks for the quick explanations.

Jack