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Low rpm's

CASEY SCHEID

Active Member
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Boat Make
Yamaha
Year
2016
Boat Model
FSH Sport
Boat Length
19
Hey. I have a 2016 Yamaha fsh sport. I took it out for the first time this year and it wouldn't go over 6,000 rpm's. It usefully maxes around 7,500 rpm's. I changed the spark plugs and added fresh fuel but it didn't help. Any ideas
 

Seadeals

Jetboaters Admiral
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Location
Greenville, South Carolina
Boat Make
Yamaha
Year
2006
Boat Model
SX
Boat Length
21
Did you change the plugs before or after it would only go to 6000? Have you visually inspected the intake grate, tunnel and impeller for any anomalies? Where does the oil level read when in the water idle with engine running?
 

NewBoater

Jetboaters Captain
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Location
Virginia Beach
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Yamaha
Year
2018
Boat Model
242X E-Series
Boat Length
24
Is the hull dirty? Needs an acid bath?
 

Gym

Jetboaters Admiral
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Falmouth, MA (Cape Cod)
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Yamaha
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Gym

Jetboaters Admiral
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Year
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Check or remove your air filter. It may have oil or dirt contamination. Also check to make sure your impeller is not contacting the wear ring.
 

CASEY SCHEID

Active Member
Messages
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Boat Make
Yamaha
Year
2016
Boat Model
FSH Sport
Boat Length
19
My first trip out this year I had low rpm's then I changed the plugs and there was no change. I checked the air filter and it was fine. The oil seems to be a little bit high when sitting on the trailer but I haven't checked on the water.
 
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