- Location
- Canada
Hey Guys!
Just picked up a project 1990 JS550 SX and I'm working on the carb but for the life of me, I cannot find the high, low and pilot jets. Am I crazy? Its a Mikuni BN44 round body.
I believe the jet with the 0.8 stamping is the air inlet? (I remember reading a chart somewhere where it seemed to align but I can't find it now).
![1685817285431.png 1685817285431.png](https://www.x-h2o.com/data/attachments/352/352353-33f8698a475f1c008673b91d63eaa41a.jpg)
Jet Ski Specs
-Full Coffman exhaust
-DG Extreme ride plate and intake grate
-Skat Track impeller (not sure the pitch off hand)
-Engine was rebuilt with Brand new SBT welded crank.
-All new factory bearings, seals and gaskets.
-Copper head gasket.
-OCJS Head
-550 Piston Port Cylinder was bored (Don't remember bore size off hand) with wiseco pistons
-Mikuni BN44 carb with Pilot, High and Low jet
Just picked up a project 1990 JS550 SX and I'm working on the carb but for the life of me, I cannot find the high, low and pilot jets. Am I crazy? Its a Mikuni BN44 round body.
I believe the jet with the 0.8 stamping is the air inlet? (I remember reading a chart somewhere where it seemed to align but I can't find it now).
![1685817285431.png 1685817285431.png](https://www.x-h2o.com/data/attachments/352/352353-33f8698a475f1c008673b91d63eaa41a.jpg)
Jet Ski Specs
-Full Coffman exhaust
-DG Extreme ride plate and intake grate
-Skat Track impeller (not sure the pitch off hand)
-Engine was rebuilt with Brand new SBT welded crank.
-All new factory bearings, seals and gaskets.
-Copper head gasket.
-OCJS Head
-550 Piston Port Cylinder was bored (Don't remember bore size off hand) with wiseco pistons
-Mikuni BN44 carb with Pilot, High and Low jet