I have a Yamaha 60 FETO which is overheating.
The buzzer goes off after about 5 mins. This happened last time I took the
boat out after a prolonged winter break.
Prior to this trip the motor has been fine.
I suspect a seized thermostat. I don't have a repair manual, but have
changed plenty of automotive thermostats.
Can anyone help with infomation on inspecting the thermostat.? Is it an
easy job?. I have noticed a large side plate on the motor and was thinking
it may be under there as the water stream exits at the bottom.
Thanks in advance
Bristan

It's under a small dome shaped cover either on the cylinder head or the top
of the block. Held on by 2 bolts. If it is the gasket type, try to save the
gasket or make a new one. When you have the cover off, remove the stat and
idle the engine for a few seconds to check the water pump and purge the
system

I have the same engine next to the stat is a larg bolt if you remove this
(only for a second} water should pump out .if it doesnt it could be your
impeller
"OldRedNeck" wrote in message
...
It's under a small dome shaped cover either on the cylinder head or the
top
of the block. Held on by 2 bolts. If it is the gasket type, try to save
the
gasket or make a new one. When you have the cover off, remove the stat and
idle the engine for a few seconds to check the water pump and purge the
system




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"Graham Hope" wrote in message
...
I have the same engine next to the stat is a larg bolt if you remove this
(only for a second} water should pump out .if it doesnt it could be your
impeller

Thanks for that,
There is still a reasonable water stream coming out of the motor however
a few people have told me that it is probably the impeller.
As it apparently is not expected to last very long.
I have also been told by a local mechanic that it can be very difficult to
get at the impeller if it hasn't been checked regularly.
(everything is frozen on)
regards







"OldRedNeck" wrote in message
...
It's under a small dome shaped cover either on the cylinder head or the
top
of the block. Held on by 2 bolts. If it is the gasket type, try to save
the
gasket or make a new one. When you have the cover off, remove the stat
and
idle the engine for a few seconds to check the water pump and purge the
system




---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.516 / Virus Database: 313 - Release Date: 01/09/2003

Hi Bristan

You should check your impeller...

Lars (DENMARK)

"Bristan" daed skrev i en meddelelse
...
I have a Yamaha 60 FETO which is overheating.
The buzzer goes off after about 5 mins. This happened last time I took the
boat out after a prolonged winter break.
Prior to this trip the motor has been fine.
I suspect a seized thermostat. I don't have a repair manual, but have
changed plenty of automotive thermostats.
Can anyone help with infomation on inspecting the thermostat.? Is it an
easy job?. I have noticed a large side plate on the motor and was thinking
it may be under there as the water stream exits at the bottom.
Thanks in advance
Bristan