How do my 717 spark plugs look?

[Austin69]

Working on tuning my seadoo challenger twin 717 and here are the new plugs after a 20 min ride. Let me know what you think and what adjustments might engine 1 or 2 need?

 

[burtshaver2021]

I would richen them all up except for engine 1 rear, even it I would try to go 1/8 turn richer. Have you been able to find the factory settings? They are harder to find for the boats

 

[Austin69]

I would richen them all up except for engine 1 rear, even it I would try to go 1/8 turn richer. Have you been able to find the factory settings? They are harder to find for the boats

No i cant find them. I just went with the seadoo 717 (gs,gtx) of my year (2001) w accelerator pump which is 0 high, 1 low. if u can find the boat ones and if they are different let me know.

 

[burtshaver2021]

My 1998 Challenger had them set at 1 1/2 turns out for the low, it also has accelerator pumps. Don’t know if that’s correct because I bought it non running but I will check manual after work

 

[Frige]

Yes those look lean. I would rather be rich$

 

[burtshaver2021]

From the 1998 Seadoo jet boats manual, low speed screw is supposed to be 1 and 1/4” out. That manual is available here on Seadoo forum with a premium membership.