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Dec 30th, 2023
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 Question about a Yamaha SHO
#14473155
09/10/22 01:50 AM
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Joined: Jan 2016
Posts: 159
Dad2rlkm
OP
Outdoorsman
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OP
Outdoorsman
Joined: Jan 2016
Posts: 159 |
I have a 2023 Yamaha SHO 250 and I am concerned the lack of stream pressure on the "overboard discharge" from the water pump. I have probably less than 6 hrs on the motor so far. When I am idling the stream pressure is close to average but not what I would expect. When am doing the break-in in the different RPM zones, the stream pressure drops off badly. An extremely weak stream. Like it has a bad prostrate.
My question to you SHO owners: is the water pump output variable? Does yours do this? I am afraid I picked up some form of trash in the intake and it isn't flowing the way it should.
Last edited by Dad2rlkm; 09/10/22 01:54 AM.
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Re: Question about a Yamaha SHO
[Re: Dad2rlkm]
#14473163
09/10/22 01:59 AM
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Joined: Apr 2017
Posts: 12,184
tmd11111
TFF Guru
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TFF Guru
Joined: Apr 2017
Posts: 12,184 |
Mines a ‘17 model and it does the same. At idle it’s only about 2psi and wot it’s about 11-12
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Re: Question about a Yamaha SHO
[Re: tmd11111]
#14473184
09/10/22 02:33 AM
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Joined: Jan 2016
Posts: 159
Dad2rlkm
OP
Outdoorsman
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OP
Outdoorsman
Joined: Jan 2016
Posts: 159 |
I think mine is doing the opposite. Almost good pressure at idle and next to none at higher RPMs.
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Re: Question about a Yamaha SHO
[Re: tmd11111]
#14473217
09/10/22 03:15 AM
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Joined: Aug 2004
Posts: 4,476
Duke 22
TFF Team Angler
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TFF Team Angler
Joined: Aug 2004
Posts: 4,476 |
Mines a ‘17 model and it does the same. At idle it’s only about 2psi and wot it’s about 11-12 My 2019 250 is about the same.
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Re: Question about a Yamaha SHO
[Re: Duke 22]
#14473402
09/10/22 02:24 PM
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Joined: Mar 2007
Posts: 16,339
forkduc
TFF Guru
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TFF Guru
Joined: Mar 2007
Posts: 16,339 |
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Re: Question about a Yamaha SHO
[Re: forkduc]
#14473508
09/10/22 03:51 PM
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Joined: Jan 2016
Posts: 159
Dad2rlkm
OP
Outdoorsman
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OP
Outdoorsman
Joined: Jan 2016
Posts: 159 |
To be sure I understand what ya'll are saying, is your stream stronger at idle,or stronger at WOT?
Mine is stronger at idle almost nothing at higher RPMs.
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Re: Question about a Yamaha SHO
[Re: Dad2rlkm]
#14473620
09/10/22 05:52 PM
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Joined: Aug 2004
Posts: 4,476
Duke 22
TFF Team Angler
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TFF Team Angler
Joined: Aug 2004
Posts: 4,476 |
To be sure I understand what ya'll are saying, is your stream stronger at idle,or stronger at WOT?
Mine is stronger at idle almost nothing at higher RPMs. WOT
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Re: Question about a Yamaha SHO
[Re: Dad2rlkm]
#14475269
09/12/22 01:05 PM
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Joined: Jan 2010
Posts: 185
poker1980
Outdoorsman
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Outdoorsman
Joined: Jan 2010
Posts: 185 |
12 psi is all that is required for SHO's
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