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SX192 Another low speed Low RPM thread

Kawi

Well-Known Member
Messages
20
Reaction score
2
Points
52
Boat Make
Yamaha
Year
2015
Boat Model
SX192
Boat Length
19
Hi all, i've been reading for most of the night about others having this issue. my 2015 SX192 has 260hrs.
It was new to me 2yrs ago, i replaced the impeller/wear housing (OEM SS) and last year i was hitting 46-47 MPH with my wife/I.
Did oil/plugs this winter (NGK R 6A plugs), and first time out this year i'm only getting 5,200-5,550 RPM, and 20-22MPH at best, below that RPM it's all good. Impeller is all good, plugs look good, air filter pulled and looked decent, pulled it out completely but no improvement. Oil is just under the 2nd (upper) dot, so i'd think this is fine?
Removed the intake boot and it's a touch oily, but no "standing" oil in it. Removed upper/vertical hose to supercharger and it's the same, just a veyr light film, but no puddles. after i removed the intake hose from the airbox to the Supercharger i spun the "vanes" inside and they go both ways, is this the way to tell for sure if your clutch is shot? it spun very freely, and even a bit loose/clicky. pics/ vid below:
2023-06-25 15.04.14.jpg
 

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Kawi

Well-Known Member
Messages
20
Reaction score
2
Points
52
Boat Make
Yamaha
Year
2015
Boat Model
SX192
Boat Length
19
So a member here (Thanks DB), suggested removing the SC and checking, i did this tonight, and once removed i saw that the gear spins with no resistance in either direction- so based on reading others' posts, i'm thinking the clutch is smoked. From wat it looks like I'll just need the gear set, and the oil pump gasket? i also saw a few have mentioned a special tool to hold the shaft maybe?
 

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